2023-06-24  Werner Lemberg  <wl@gnu.org>

	* Version 2.13.1 released.
	==========================

	Tag sources with `VER-2-13-1'.

	* docs/VERSION.TXT: Add entry for version 2.13.1.
	* docs/CHANGES: Updated.
	* docs/release, docs/README, builds/macs/README: Updated.

	* README, src/base/ftver.rc, builds/windows/vc2010/index.html,
	builds/windows/visualc/index.html, builds/windows/visualce/index.html,
	builds/wince/vc2005-ce/index.html, builds/wince/vc2008-ce/index.html,
	docs/freetype-config.1: s/2.13.0/2.13/1/, s/2130/2131/.

	* include/freetype/freetype.h (FREETYPE_PATCH): Set to 1.

	* builds/unix/configure.raw (version_info): Set to 26:0:20.
	* CMakeLists.txt (VERSION_PATCH): Set to 1.

	* subprojects/libpng.wrap, subprojects/zlib.wrap, subprojects/dlg: Updated.

2023-06-09  suzuki toshiya  <mpsuzuki@hiroshima-u.ac.jp>

	Comment fixes.

2023-06-09  Werner Lemberg  <wl@gnu.org>

	[sdf] Correct handling of empty glyphs.

	This is a refinement of commit 7b3ebb9.

	* src/sdf/ftsdfrend.c (ft_sdf_render): Goto 'Exit' instead of directly
	returning.
	(fd_bsdf_render): Ditto, also taking care of setting `FT_GLYPH_OWN_BITMAP`
	correctly.

2023-06-05  Ben Wagner  <bungeman@chromium.org>

	Mark FT_Renderer_Class::raster_class as pointer to const

	The `FT_DEFINE_RASTER_FUNCS` macro declares a `const FT_Raster_Funcs`.
	The address of the definition is taken and assigned to
	`FT_Renderer_Class::raster_class` which is currently `FT_Raster_Funcs*`.
	Until recently the `const` was cast away and with the removal of the
	cast there are now warnings about dropping this `const`. Instead of
	adding back the casts, make `FT_Renderer_Class::raster_class` a pointer
	to const, as is done with pointers in other interfaces.

	* include/freetype/ftrender.h (FT_Renderer_Class_): mark `raster_class`
	as const.

2023-06-03  Ben Wagner  <bungeman@chromium.org>

	Fix some `FT_Fixed` vs. `FT_Long` confusion.

	`FT_Fixed` and `FT_Long` are both typedef'ed to be `signed long`.  However,
	`FT_Fixed` implies that the lower 16 bits are being used to express
	fractional values and so these two types should not be confused.

	* include/freetype/internal/services/svmm.h (FT_Set_MM_Blend_Func): Use
	`FT_Fixed` for `coords`.  Users are passing `FT_Fixed` and implementations
	are taking `FT_Fixed`.
	(FT_Get_MM_Blend_Func): Ditto.

	* src/autofit/afcjk.c (af_cjk_metrics_check_digits): Use `FT_Long` for
	`advance` and `old_advance`.  `advance`'s address is passed as `FT_Long*` to
	`af_shaper_get_elem`, which writes the advance in em units (not fixed).  The
	exact value is not important here as it is only compared to check whether it
	has changed.

	* src/autofit/aflatin.c (af_latin_metrics_check_digits): Ditto.

2023-06-03  Ben Wagner  <bungeman@chromium.org>

	*/*: Remove many function pointer casts.

	In C it is undefined behavior to call a function through a function pointer
	of a different type.  This is now detected by the Control Flow Integrity
	Sanitizer.  All known issues have already been fixed.  Prevent any
	accidental re-introduction by removing function pointer casts when defining
	services.  The services will call the service functions through the function
	pointers on the service.  As a result the functions must have the same type
	so there should be no need to cast.  Removing the casts allows compilers to
	warn about assignment to an incompatible function pointer type.

2023-06-03  Werner Lemberg  <wl@gnu.org>

	Minor formatting.

2023-05-23  Werner Lemberg  <wl@gnu.org>

	Replace `sprintf` with `snprintf`.

	Fixes #1233.

	* include/freetype/config/ftstdlib.h (ft_sprintf): Replace with...
	(ft_snprintf): This new macro.

	* src/autofit/afhints.c (af_print_idx): Add argument to pass the buffer
	size.
	(af_glyph_hints_dump_points, af_glyph_hints_dump_segments,
	af_glyph_hints_dump_edges): Updated.

	* src/bdf/bdflib.c (BUFSIZE): New macro.
	(bdf_parse_properties_, bdf_parse_start_): Use `ft_snprintf`.

	* src/tools/ftrandom/ftrandom.c (do_test): Use `snprintf`.

2023-05-23  Werner Lemberg  <wl@gnu.org>

	docs/DEBUG: Formatting.

2023-05-20  suzuki toshiya  <mpsuzuki@hiroshima-u.ac.jp>

	[doc] Type1 GX (sfnt-wrapped Type1) is not supported.

	* docs/formats.txt: Clarify the reference of Type1 GX,
	and state that this format is not supported.  This
	is because the content `TYP1' table is not exactly same
	with the Type1 font format specification; no eexec
	encryption is used.  For detail and concrete examples,
	see the analysis on:

	https://gitlab.freedesktop.org/freetype/freetype/-/issues/1231

2023-05-19  Craig White  <gerzytet@gmail.com>

	Add missing end quote of a string in the example code of FT_Trace_Set_Level

2023-05-19  Seigo Nonaka  <nona@google.com>

	[truetype] Reduce heap allocation of `deltaSet` variation data.

	`deltaSet` is an array of packed integers that can be 32 bits, 16 bits, or
	8 bits.  Before this change, these values were unpacked to 32-bit integers.
	However, this can cause big heap allocations, e.g., around 500 KByte for
	'NotoSansCJK'.  To reduce this amount, store the packed integers and unpack
	them just before passing to the calculation.  At calculation time, due to
	the variable length of region indices, temporary heap allocations are
	necessary.  This heap allocation is not negligible and visible in `ftbench`
	results.  So, use stack-allocated arrays for short array calculations.

	Fixes #1230.

	* include/freetype/internal/ftmmtypes.h (GX_ItemVarDataRec): New fields
	`wordDeltaCount` and `longWords`.

	* src/truetype/ttgxvar.c (tt_var_load_item_variation_store): Load packed
	data.
	(tt_var_get_item_delta): Unpack data before applying.

2023-05-17  Jouk Jansen  <joukj@hrem.nano.tudelft.nl>

	vms_make.com: Create shared executable for x86 version of OpenVMS.

2023-05-15  Werner Lemberg  <wl@gnu.org>

	Add new load flag `FT_LOAD_NO_SVG`.

	Modern color fonts often contain both an 'SVG' and 'COLR' table.  FreeType
	always preferred 'SVG' over 'COLR' (this was a design decision), however,
	this might not be the right choice for the user.  The new flags makes
	FreeType ignore the 'SVG' table while loading a glyph.

	Fixes #1229.

	* include/freetype/freetype.h (FT_LOAD_NO_SVG): New macro.

	* src/base/ftobjs.c (FT_Load_Glyph), src/cff/cffgload.c (cff_slot_load),
	src/truetype/ttgload.c (TT_Load_Glyph): Use it.

2023-05-13  Werner Lemberg  <wl@gnu.org>

	.mailmap: Updated.

2023-05-13  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[cache] Merge functions.

	* src/cache/ftccache.c (FTC_Cache_Init): Merge into...
	(ftc_cache_done): ... this function, with unnecessary checks removed.

2023-05-13  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[cache] Minor casting and cosmetic updates.

	* src/cache/ftcglyph.c (ftc_gcache_{init,done}): Remove casting.
	(FTC_GCache_Lookup): Cosmetic variable renaming.
	* src/cache/ftcsbits.c (ftc_snode_compare): Formatting.

2023-05-12  Werner Lemberg  <wl@gnu.org>

	* include/freetype/ftcache.h: Typo, punctuation.

2023-05-12  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* include/freetype/ftcache.h: Formatted and updated.

2023-05-12  suzuki toshiya  <mpsuzuki@hiroshima-u.ac.jp>

	* include/freetype/internal/t1types.h: Fix the indentation.

2023-05-11  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[cache] Revise the dynamic hash table accounting.

	Instead of counting entries relative to the middle of the hash table,
	this switches to the absolute counter with the full index range mask.
	As a result, some calculations become a bit simpler.  The cache resizing
	logic stays largely the same.

	* src/cache/ftccache.h (FTC_NODE_TOP_FOR_HASH): Revised with new counter.
	* src/cache/ftccache.c (ftc_get_top_node_for_hash): Ditto.
	(ftc_cache_resize): Simplify reallocations and stop their zeroing.
	(ftc_cache_init): Stop over-allocating but keep zeroing initially.
	(FTC_Cache_Clear, FTC_Cache_RemoveFaceID): Updated accordingly.

2023-05-11  suzuki toshiya  <mpsuzuki@hiroshima-u.ac.jp>

	[t1cid] Set FT_FACE_FLAG_CID_KEYED.

	* cidobjs.c (cid_face_init): Set FT_FACE_FLAG_CID_KEYED.

	* cidriver.c (cid_get_is_cid): Comment about the case that
	is_cid cannot guarantee the glyph collection specification.

2023-05-09  Jouk Jansen  <joukj@hrem.nano.tudelft.nl>

	* src/smooth/ftgrays.c (FT_SSE2): Don't define for VMS.

2023-05-08  Werner Lemberg  <wl@gnu.org>

	* src/cff/cffdrivr.c (cff_glyph_load): Fix guard for `size`.

	This was forgotten to change in commit 2b54eba36b (in May 2004).

	Reported as

	  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=58739

2023-05-08  Werner Lemberg  <wl@gnu.org>

	Minor compiler warning fixes.

	* src/autofit/afcjk.c (af_cjk_get_standard_widths), src/autofit/aflatin.c
	(af_latin_get_standard_widths): Use `FT_CALLBACK_DEF`.

	* src/cff/cffparse.c (cff_parser_run): Initialize and fix allocation of `q`.

2023-05-08  Werner Lemberg  <wl@gnu.org>

	* src/psaux/t1cmap.c: Signature fixes.

2023-05-08  Werner Lemberg  <wl@gnu.org>

	* src/bzip2/ftbzip2.c: Signature fixes.

2023-05-08  Werner Lemberg  <wl@gnu.org>

	[cache] Signature fixes.

	* src/cache/ftcglyph.c, src/cache/ftcglyph.h (FTC_GNode_Compare): Remove
	redundant function.  It is equivalent to `ftc_gnode_compare` and becomes
	completely meaningless with fixed signatures.
	Update all callers.

	* src/cache/ftcsbits.c, src/cache/ftcsbits.h (FTC_SNode_Compare): Remove
	redundant function.  It is equivalent to `ftc_snode_compare` and becomes
	completely meaningless with fixed signatures.
	Update all callers.

2023-05-07  Werner Lemberg  <wl@gnu.org>

	[sdf] Signature fixes.

2023-05-07  Werner Lemberg  <wl@gnu.org>

	* src/svg/ftsvg.c: Signature fixes.

2023-05-07  Werner Lemberg  <wl@gnu.org>

	[raster] Signature fixes.

2023-05-07  Werner Lemberg  <wl@gnu.org>

	[smooth] Signature fixes.

2023-05-07  Werner Lemberg  <wl@gnu.org>

	[pshinter] Signature fixes.

	* src/pshinter/pshrec.c (t1_hints_close, t1_hints_apply): New wrapper
	functions.
	(t1_hints_funcs_init): Use them.
	(t2_hints_close, t2_hints_apply): New wrapper functions.
	(t2_hints_funcs_init): Use them.

2023-05-07  Werner Lemberg  <wl@gnu.org>

	[autofit] Signature fixes.

2023-05-07  Werner Lemberg  <wl@gnu.org>

	* src/sfnt/ttcmap: Signature fixes.

2023-05-07  Werner Lemberg  <wl@gnu.org>

	* src/pcf/pcfdrivr.c: Signature fix.

2023-05-07  Werner Lemberg  <wl@gnu.org>

	* src/winfonts/winfnt.c: Signature fixes.

2023-05-07  Werner Lemberg  <wl@gnu.org>

	* src/type42/t42parse.c: Signature fixes.

2023-05-07  Werner Lemberg  <wl@gnu.org>

	[pfr] Signature fixes.

2023-05-07  Werner Lemberg  <wl@gnu.org>

	* src/cid/cidload.c: Signature fixes.

2023-05-07  Werner Lemberg  <wl@gnu.org>

	* src/cff/cffcmap.c: Signature fixes.

2023-05-07  Werner Lemberg  <wl@gnu.org>

	* src/type1/t1load.c: Signature fixes.

2023-05-07  Werner Lemberg  <wl@gnu.org>

	[truetype] Signature fixes.

2023-05-07  Werner Lemberg  <wl@gnu.org>

	[base] Signature fixes.

2023-05-07  Werner Lemberg  <wl@gnu.org>

	* src/type42/t42drivr.c: Clean up interface.

	Ensure that all driver functions use the signature of the service or driver.
	This avoids pointer mismatches, which are technically undefined behaviour.
	Recent compilers are more picky in catching them as part of Control Flow
	Integrity tests.

2023-05-07  Werner Lemberg  <wl@gnu.org>

	* src/type1/*: Clean up interface.

	Ensure that all driver functions use the signature of the service or driver.
	This avoids pointer mismatches, which are technically undefined behaviour.
	Recent compilers are more picky in catching them as part of Control Flow
	Integrity tests.

2023-05-07  Werner Lemberg  <wl@gnu.org>

	* src/truetype/*: Clean up interface.

	Ensure that all driver functions use the signature of the service or driver.
	This avoids pointer mismatches, which are technically undefined behaviour.
	Recent compilers are more picky in catching them as part of Control Flow
	Integrity tests.

2023-05-07  Werner Lemberg  <wl@gnu.org>

	* src/sfnt/sfdriver.c, src/sfnt/ttbdf.c: Clean up interface.

	Ensure that all driver functions use the signature of the service or driver.
	This avoids pointer mismatches, which are technically undefined behaviour.
	Recent compilers are more picky in catching them as part of Control Flow
	Integrity tests.

	* src/sfnt/sfdriver.c (sfnt_load_table): New wrapper function.
	(sfnt_service_sfnt_table): Use it.

2023-05-07  Werner Lemberg  <wl@gnu.org>

	* src/psnames/psmodule.c: Use `FT_CALLBACK_DEF`.

2023-05-07  Werner Lemberg  <wl@gnu.org>

	* src/pfr/pfrdrivr.c: face -> pfrface, pfrface -> face.

2023-05-07  Werner Lemberg  <wl@gnu.org>

	* src/pcf/pcfdrivr.c: Clean up interface.

	Ensure that all driver functions use the signature of the service or driver.
	This avoids pointer mismatches, which are technically undefined behaviour.
	Recent compilers are more picky in catching them as part of Control Flow
	Integrity tests.

2023-05-07  Werner Lemberg  <wl@gnu.org>

	* src/cid/cidriver.c: Clean up interface.

	Ensure that all driver functions use the signature of the service or driver.
	This avoids pointer mismatches, which are technically undefined behaviour.
	Recent compilers are more picky in catching them as part of Control Flow
	Integrity tests.

2023-05-07  Werner Lemberg  <wl@gnu.org>

	* src/bdf/bdfdrivr.c: Clean up interface.

	Ensure that all driver functions use the signature of the service or driver.
	This avoids pointer mismatches, which are technically undefined behaviour.
	Recent compilers are more picky in catching them as part of Control Flow
	Integrity tests.

2023-05-07  Werner Lemberg  <wl@gnu.org>

	* src/cff/*: Clean up interface.

	Ensure that all driver functions use the signature of the service or driver.
	This avoids pointer mismatches, which are technically undefined behaviour.
	Recent compilers are more picky in catching them as part of Control Flow
	Integrity tests.

2023-05-06  Werner Lemberg  <wl@gnu.org>

	[truetype] Fix style name handling for variation fonts.

	* include/freetype/internal/tttypes.h (TT_FaceRec): New field
	`non_var_style_name`.

	* src/sfnt/sfobjs.c (sfnt_load_face): Initialize `non_var_style_name`.
	(sfnt_done_face): Free `non_var_style_name`.

	* src/truetype/ttgxvar.c (TT_Set_Named_Instance): Restore non-VF style name
	if switching back to non-VF mode.

2023-05-06  Werner Lemberg  <wl@gnu.org>

	[truetype] Fix PostScript name handling for variation fonts.

	A variation font's PostScript name of a named instance is usually different
	from the PostScript name of an unnamed instance.  However, if a change
	between a named instance and an unnamed instance with exactly the same
	design axis values happened, it was possible that the PostScript name wasn't
	correctly updated.

	This commit reorganizes the code to handle this issue within the top-level
	API functions, using a new service to trigger recomputation of the
	PostScript name.

	* include/freetype/internal/services/svmm.h (FT_Construct_PS_Name_Func): New
	typedef.
	(FT_Service_MultiMasters): New field `construct_ps_name`.
	(FT_DEFINE_SERVICE_MULTIMASTERSREC): Updated.

	* src/base/ftmm.c (FT_Set_Var_Design_Coordinates,
	FT_Set_MM_Blend_Coordinates, FT_Set_Var_Blend_Coordinates): Call
	`mm->construct_ps_name` to handle `postscript_name`.
	(FT_Set_Named_Instance): Call `mm->construct_ps_name` to handle
	`postscript_name`.
	Use shortcut.
	* src/cff/cffdrivr.c (cff_construct_ps_name): New function.
	(cff_service_multi_masters): Updated.

	* src/truetype/ttgxvar.c (tt_set_mm_blend): Don't handle `postscript_name`.
	(TT_Set_MM_Blend): Simplify.
	(TT_Set_Named_Instance): Return -1 if axis values haven't changed.
	Don't set `face_index`.
	(tt_construct_ps_name): New function.

	* src/truetype/ttgxvar.h: Updated.

	* src/truetype/ttdriver.c (tt_service_gx_multi_masters): Updated.

	* src/type1/t1driver.c (t1_service_multi_masters): Updated.

	* src/type1/t1load.c (T1_Set_MM_Blend): Simplify.

2023-05-06  Werner Lemberg  <wl@gnu.org>

	* include/freetype/internal/services/svmm.h: Minor changes.

2023-05-06  Werner Lemberg  <wl@gnu.org>

	[truetype] Fix deactivation of variation font handling.

	According to the documentation, the functions `FT_Set_Named_Instance`,
	`FT_Set_MM_Design_Coordinates`, `FT_Set_Var_Design_Coordinates`, and
	`FT_Set_Var_Blend_Coordinates` can unset the `FT_FACE_FLAG_VARIATION` flag.
	(The same is true for `FT_Set_MM_WeightVector` but this information was
	accidentally omitted from the documentation.)

	However, if a call of these functions didn't change the axis values this
	could fail because internal shortcuts exited too early.

	This commit reorganizes the code to handle `FT_FACE_FLAG_VARIATION` in the
	top-level API functions, also taking care of the issue at hand.

	* src/base/ftmm.c (FT_Set_MM_Design_Coordinates, FT_Set_MM_WeightVector,
	FT_Set_Var_Design_Coordinates, FT_Set_MM_Blend_Coordinates,
	FT_Set_Var_Blend_Coordinates): Handle `FT_FACE_FLAG_VARIATION`.

	* src/truetype/ttgxvar.c (TT_Set_MM_Blend, TT_Set_Var_Design,
	TT_Set_Named_Instance) Don't handle `FT_FACE_FLAG_VARIATION`.

	* src/type1/t1load.c (T1_Set_MM_Blend, T1_Set_MM_WeightVector,
	T1_Set_MM_Design): Ditto.

	* src/cff/cffobjs.c (cff_face_init): Use `FT_Set_Named_Instance` instead of
	low-level functions.

	* src/truetype/ttobjs.c (tt_face_init): Ditto.

2023-05-06  Werner Lemberg  <wl@gnu.org>

	s/set_instance/set_named_instance/

	* include/freetype/internal/services/svmm.h (FT_Set_Instance_Func): Renamed
	to...
	(FT_Set_Named_Instance_Func): ...this.
	(FT_Service_MultiMasters): Rename `set_instance` to `set_named_instance`.
	(FT_DEFINE_SERVICE_MULTIMASTERSREC): Updated.

	* src/base/ftmm.c (FT_Set_Named_Instance): Updated.

	* src/cff/cffdrivr.c (cff_set_instance): Renamed to...
	(cff_set_named_instance): ...this.
	(cff_service_multi_masters): Updated.
	* src/cff/cffobjs.c (cff_face_init): Updated.

	* src/truetype/ttdriver.c (tt_service_gx_multi_masters): Updated.

	* src/type1/t1driver.c (t1_service_multi_masters): Updated.

2023-05-06  Werner Lemberg  <wl@gnu.org>

	New Variation Font function `FT_Get_Default_Named_Instance`.

	* include/freetype/ftmm.h, src/base/ftmm.c (FT_Get_Default_Named_Instance):
	New function.

	* include/freetype/internal/services/svmm.h
	(FT_Get_Default_Named_Instance_Func): New typedef.
	(FT_Service_MultiMasters): New field `get_default_named_instance`.
	(FT_DEFINE_SERVICE_MULTIMASTERSREC): Updated.

	* include/freetype/internal/tttypes.h (TT_Face): New field
	`var_default_named_instance`.

	* src/sfnt/sfobjc.s (sfnt_init_face): Initialize
	`var_default_named_instance`.

	* src/cff/cffdrivr.c (cff_get_default_named_instance): New function.
	(cff_service_multi_masters): Updated.

	* src/truetype/ttgxvar.c (TT_Get_MM_Var): Initialize
	`var_default_named_instance`.
	(TT_Get_Default_Named_Instance): New function.
	* src/truetype/ttgxvar.h: Updated.
	* src/truetype/ttdriver.c (tt_service_gx_multi_masters): Updated.

	* src/type1/t1driver.c (t1_service_multi_masters): Updated.

	* docs/CHANGES: Updated.

2023-05-06  Werner Lemberg  <wl@gnu.org>

	[cid] Improve tracing messages; formatting.

2023-05-04  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* src/cache/ftccache.c (ftc_node_hash_unlink): Minor.

2023-05-04  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* src/cache/ftcmru.c (FTC_MruList_RemoveSelection): Purge backwards.

2023-05-04  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[cache] Revise list cleansing.

	* src/cache/ftcmru.c (FTC_MruList_RemoveSelection): Use one loop to
	do it.
	* src/cache/ftcmanag.c (FTC_Manager_Compress, FTC_Manager_FlushN):
	Streamline loops.

2023-05-03  suzuki toshiya  <mpsuzuki@hiroshima-u.ac.jp>

	[t1cid] Improve cid_get_cid_from_glyph_index().

	Update cid_get_cid_from_glyph_index() to
	return an error and CID=0 in the case that
	the specified glyph index points to an invalid
	entry.

	cidgload.h (cid_compute_fd_and_offsets):
	Declare new helper function to set the
	fd_select and 2 offsets to access the glyph
	description data.

	cidgload.c (cid_compute_fd_and_offsets):
	Move the part loading fd_select and 2 offsets
	from cid_load_glyph() to here.  If the loaded
	parameters are broken, return the Invalid_Offset
	error.  This function does not load the glyph
	data, only fills these parameters.

	(cid_load_glyph): Use new helper function in above.

	cidriver.c (cid_get_cid_from_glyph_index):
	Check whether the requested glyph index points
	to a valid entry, by calling cid_compute_fd_and_offsets().
	If it is valid, fill the cid by the glyph
	index (=CID).  If it is invalid, return an
	error and fill the cid by 0.

2023-04-30  Werner Lemberg  <wl@gnu.org>

	API documentation: Re-organize chapters and sections

	* Split the very long 'Base Interface' section into smaller sections.
	* Split the 'Core API' chapter into two chapters.
	* Remove single enumeration values from `@order` fields since they have no
	  effect.

2023-04-29  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* src/sfnt/pngshim.c (Load_SBit_Png): Remove FALL_THROUGH warning.

2023-04-28  Werner Lemberg  <wl@gnu.org>

	* src/sfnt/ttload.c (tt_face_load_font_dir): Add another guard.

	Reject 'OTTO' fonts with no valid tables.

2023-04-28  Werner Lemberg  <wl@gnu.org>

	* src/cff/cffdrivr/c (cff_get_ps_name): Avoid unnecessary crash.

	The situation can happen if `FT_New_Face` (or one of its siblings) is called
	with a negative index to get the number of contained faces, followed
	immediately by a call to `FT_Get_Postscript_Name`.  While this is not a valid
	use of the FreeType library there is no need for a crash.

	Fixes #1219.

2023-04-28  Werner Lemberg  <wl@gnu.org>

	* src/cff/cffdrivr.c (cff_ps_get_font_info): Reject 'CFF2' format.

2023-04-28  Werner Lemberg  <wl@gnu.org>

	* src/cid/cidgload.c (cid_load_glyph): Fix compiler warnings.

2023-04-28  Werner Lemberg  <wl@gnu.org>

	Minor documentation updates.

2023-04-27  Werner Lemberg  <wl@gnu.org>

	* src/ttgxvar.c: Minor changes.

	(TT_Get_MM_Var): Improve tracing messages.
	(tt_set_mm_blend): Minor speed-up.

2023-04-27  Werner Lemberg  <wl@gnu.org>

	s/this is,/that is,/

2023-04-27  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[bdf] Clean up the atom property parsing.

	* src/bdflib.c (bdf_is_atom_): Refactor code with fewer checks.
	(bdf_list_join_): Return NULL.
	(bdf_add_comment_): Use const argument.
	(bdf_get_property): Ditto, ditto, make the function static.
	* src/bdf.h (bdf_get_property): Remove prototype.

2023-04-25  Werner Lemberg  <wl@gnu.org>

	Improve/add source comments and documentation.

2023-04-25  Werner Lemberg  <wl@gnu.org>

	[sfnt] Fix handling of PS names for Variation Fonts.

	* src/sfnt/sfdriver.c (get_win_string, get_apple_string): Continue
	construction of string if an invalid character is encountered.

	Fixes #1218.

2023-04-24  suzuki toshiya  <mpsuzuki@hiroshima-u.ac.jp>

	[t1cid] Change the trace messages of the charstrings retrieval errors.

	The t1cid driver catches 3 types of errors in
	the charstrings retrieval;
	A) The invalid FD number, there are 2 subtypes;
	  A-1) FD number is the maximum number fitting to FDBytes.
	  A-2) FD number is greater than num_dicts.
	B) Declared length is overrunning.
	C) Declared length is invalid (its end is before its head).

	Considering that some widely distributed fonts
	(e.g., "CJKV" book by O'Reilly) have A-1 errors
	in the unimplemented glyphs, the trace level for
	A-1 is calmed to level 1.

	The errors A-2, B, and C would be irregular;
	their trace levels are kept at level 0, but
	the updated trace messages include the CID number.

2023-04-24  suzuki toshiya  <mpsuzuki@hiroshima-u.ac.jp>

	[truetype] Fix `make multi'.

	* src/truetype/ttgxvar.c: Include freetype/internal/services/svmetric.h
	for the FT_Service_MetricsVariations type definition.

2023-04-19  Ben Wagner  <bungeman@chromium.org>

	[services] FT_Size_Reset_Func to return FT_Error

	The `MetricsVariations` `FT_Size_Reset_Func` is currently defined to
	return `void`, but the implementations return `FT_Error`. Even though
	the pointers passed will be the same at runtime, calling a function
	through a pointer of a different type from the original function pointer
	type is undefined behavior. This may be caught at runtime by Control
	Flow Integrity with something like clang's `cfi-icall`.

	Issue: https://crbug.com/1433651

	* include/freetype/internal/services/svmetric.h (FT_Size_Reset_Func):
	return `FT_Error` instead of `void`.

2023-04-17  Ben Wagner  <bungeman@chromum.org>

	[truetype] tt_size_reset_height to take FT_Size

	The `MetricsVariations` `FT_Size_Reset_Func` is defined to take an
	`FT_Size`. Because `tt_size_reset_height` is to be used as such a
	function, it must also take an `FT_Size` instead of a `TT_Size`. Even
	though the pointers passed will be the same at runtime, calling a
	function through a pointer of a different type from the original
	function pointer type is undefined behavior. This may be caught at
	runtime by Control Flow Integrity with something like clang's
	`cfi-icall`.

	Issue: https://crbug.com/1433651

	* src/truetype/ttobjs.h (tt_size_reset_height): take `FT_Size`

	* src/truetype/ttobjs.c (tt_size_reset_height): take `FT_Size` and
	update documentation

2023-04-13  Werner Lemberg  <wl@gnu.org>

	* src/truetype/ttinterp.c: Remove outdated comments.

2023-04-11  Ben Wagner  <bungeman@chromium.org>

	[sfnt, truetype] Add `size_reset` to `MetricsVariations`.

	This is a generalization of commit

	```
	commit e6699596af5c5d6f0ae0ea06e19df87dce088df8
	Author: Werner Lemberg <wl@gnu.org>
	Date:   Thu Feb 2 11:38:04 2017 +0100

	    [truetype] Fix MVAR post-action handling.
	```

	It is also possible for plain `CFF ` style fonts to contain an `fvar` and
	`MVAR` table and use `cff_metrics_adjust`.  `tt_size_reset` should only be
	called with `TT_Size` and never with `CFF_Size`.

	Allow the "metrics-variations" service to specify the correct function (if
	any) to reset `FT_Size`s after adjusting metrics.

	* src/truetype/ttobjs.c (tt_size_reset): Split off some functionality
	into...
	(tt_size_reset_height): ... this new function.

	* src/truetype/ttdriver.c (tt_service_metrics_variations): Add
	`size_reset`.
	(tt_size_select, tt_size_request): Updated.

	* src/truetype/ttobjs.h: Updated.

	* include/freetype/internal/services/svmetric.h (MetricsVariations): Add
	`size_reset`.
	(FT_DEFINE_SERVICE_METRICSVARIATIONSREC): Updated.

	* include/freetype/internal/tttypes.h (TT_FaceRec_): Rename `var` to
	`tt_var` and add `face_var`.

	* src/cff/cffdrivr.c (cff_service_metrics_variations): Add `size_reset`.
	(cff_hadvance_adjust, cff_metrics_adjust): Updated.

	* src/cff/cffobjs.c (cff_face_init): Use `face_var`.

	* src/sfnt/sfobjs.c (sfnt_init_face): Initialize `face_var`.

	* src/sfnt/ttmtx.c (tt_face_get_metrics): Use `tt_var`.

	* src/truetype/ttgxvar.c (tt_size_reset_iterator): Renamed to...
	(ft_size_reset_iterator): ... this new function.
	Call `size_reset`.
	(tt_apply_mvar): Pass `size_reset` to `ft_size_reset_iterator`.

	Fixes #1211

2023-04-10  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* src/cff/cffcmap.c (cff_cmap_encoding_char_next): Abbreviate.

2023-04-10  Alexei Podtelezhnikov  <apodtele@gmail.com>

	Align `char_next` return types.

	This is mostly cosmetic because FT_UInt and FT_UInt32 are likely identical.

	* src/sfnt/ttcmap.c, src/cff/cffcmap.c, src/psaux/t1cmap.c,
	src/psnames/psmodule.c, include/freetype/internal/service/svpcsmap.h,
	src/pfr/pfrcmap.c, src/winfonts/winfnt.c (*_char_next): return FT_UInt.

2023-04-09  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[sfnt] Clean up CMAP{4,12,13} handling.

	This moves the charcode overflow checks upstream and turns some
	while-loops into the do-while ones to avoid the uninitialized warnings.
	This should slightly reduce the number of checks and jumps.

	* src/sfnt/ttcmap.c (tt_cmap{4,12,13}_next,
	tt_cmap{4.12.13}_char_map_linear): Remove the charcode overflow check.
	(tt_cmap{4,12,13}_char_map_binary): Ditto and use do-while.
	(tt_cmap{12,13}_char_next): Add the overflow check.

2023-04-03  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* src/sfnt/ttpost.c (load_format_25): Do not abort frame reading.

2023-04-03  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* src/sfnt/ttpost.c (load_format_*): Streamline frame reading.

2023-04-02  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* src/sfnt/ttpost.c: Formatting and comments.

2023-04-02  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[sfnt] Consolidate POST version 2.0 and 2.5 (pt 2).

	* src/sfnt/ttpost.c (load_format_20, load_format_25): Update arguments
	and move shared calls and checks upstream to...
	(load_post_names): ... this function.
	(tt_face_free_ps_names, tt_face_get_ps_name): Updated.

2023-04-02  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[sfnt] Consolidate POST version 2.0 and 2.5 (pt 1).

	The deprecated POST version 2.5 can be handled using the data
	structures of version 2.0.  The goal is to reduce the footprint.

	* include/freetype/internal/tttypes.h (TT_Post_Names): Absorb and...
	(TT_Post_20, TT_Post_25): ... remove these structures.
	src/sfnt/ttpost.c (load_post_names, tt_face_get_ps_name,
	tt_face_free_ps_names, load_format_20): Updated accordingly.
	(load_format_25): ditto and convert offsets to glyph indices.

2023-04-01  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[sfnt] Miscellaneous POST clean-ups.

	* src/sfnt/ttpost.c (load_format_20): Decrease casts.
	(load_format_25): Check the table length and impose a theoretical
	glyph number limit usable with 8-bit offset.  Decrease casts.
	(load_post_names): Pass the mapping data length without 2 bytes.

2023-03-30  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* src/sfnt/ttpost.c (load_format_20): Simplify comutations.

2023-03-29  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[sfnt] Streamline POST format 2.0 handing (cont'd).

	* src/sfnt/ttpost.c (load_format_20): Co-allocate the string data and
	their pointers, which makes it easier to handle and free them.
	(tt_face_free_ps_names): Updated.
	* include/freetype/internal/tttypes.h (TT_Post_20): Update type.

2023-03-20  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[cff] Simplify `t2_strings` management in the old engine.

	* src/cff/cffparse.c (cff_parser_run): Allocate the charstring buffers
	and the list nodes together so that they can be freed at once.
	(finalize_t2_strings): Removed as no longer needed.
	(cff_parser_done): Updated.

2023-03-19  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[cff] Rework the stream limit checks.

	The old stream limit checks, before 6986ddac1ece, were good but
	pointless for the crafted t2_strings.  Checking limits there is
	not necessary as they are created to hold all data.  By using two
	conditions, we can detect the actual crossing of the stream boundary
	as appropriate for the stream pointer only.  The t2_strings parsing
	will not be triggering these checks.

	* src/cff/cffparse.c (cff_parser_within_limits): Removed.
	(cff_parse_real, cff_parse_integer): Redesign the stream limit check.
	(cff_parse_num, do fixed, cff_parse_fixed_dynamic): Update callers.

2023-03-18  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* src/truetype/ttgload.c (TT_Load_Simple_Glyph): Use for-loop.

	Even though we never call `TT_Load_Simple_Glyph` with zero contours,
	out of abundance of precaution, let's handle this case properly.

2023-03-18  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[truetype] Clean up zeroing and local variables.

	* src/truetype/ttgload.c (TT_Process_Simple_Glyph): Avoid zeroing.
	(load_truetype_glyph): Avoid zeroing and clean local variables.

2023-03-16  Werner Lemberg  <wl@gnu.org>

	* include/freetype/ftsystem.h (FT_Stream_IoFunc): Improve documentation.

	Fixes #1208.

2023-03-16  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* src/base/ftsynth.c (FT_GlyphSlot_AdjustWeight): New API.

2023-03-16  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[truetype] Clean up glyph loading.

	* src/truetype/ttgload.c (TT_Load_Simple_Glyph): Clean space checking.
	(TT_Hint_Glyph): Don't copy the outline structure.
	(TT_Process_Simple_Glyph): Cosmetic update.

2023-03-15  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* src/truetype/ttgload.c (TT_Load_Simple_Glyph): Clean up.

2023-03-13  Werner Lemberg  <wl@gnu.org>

	builds/vms/apinames_vms.bash: Fix `unzip` artifact

	The problem occured when unpacking a zip file created on OpenVMS on Linux.
	While OpenVMS knows many different file formats, Unix only knows stream-LF
	and binary.  In principle `zip` on Linux should have translated the file to
	stream-LF but failed to do so.  That caused the file to incorrectly contain
	only one line with control-characters.

2023-03-11  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[truetype] Fix recent fallout in memory management.

	* src/truetype/ttgload.c (TT_Process_Composite_Glyph,
	TT_Load_Simple_Glyph): Clean up old instructions regardless of
	new ones, postpone setting `control_len` and `control_data` until...
	(TT_Load_Glyph): ... the exit from this function.

2023-03-10  Jouk Jansen  <joukj@hrem.nano.tudelft.nl>

	Update VMS installation support.

2023-03-10  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* src/truetype/ttgload.c (TT_Hint_Glyph): Mostly cosmetic update.

	The number of instructions is now taken from the executed context.
	Technically, this means that `control_len` and `control_data`
	values are no longer _used_ internally but only expose them.

2023-03-08  Werner Lemberg  <wl@gnu.org>

	apinames.c: Add comment.

2023-03-07  Werner Lemberg  <wl@gnu.org>

	[gzip] File `infback.c` is not needed.

	* src/gzip/infback.c: Remove.
	* src/gzip/rules.mk (GZIP_DRV_SRCS): Updated.

2023-03-07  Werner Lemberg  <wl@gnu.org>

	[apinames] Fix VMS handling of overly long function names.

	Based on ideas from Jouk Jansen <joukj@hrem.nano.tudelft.nl>.

	* src/tools/vms_shorten_symbol.c: New file, taken from

	  https://sourceforge.net/p/vms-ports/vmsshortsym/ci/default/tree/vms_shorten_symbol.c

	with some minor edits to allow compilation with C++ and being included in
	another source code file.

	* src/tools/apinames.c: Include `vms_shorten_symbol.c`.
	(PROGRAM_VERSION): Set to '0.5'.
	(names_dump) [OUTPUT_VMS_OPT]: Call `vms_shorten_symbol` to get unique function
	identifiers not longer than 31 characters.

2023-03-07  Werner Lemberg  <wl@gnu.org>

	* src/tools/apinames.c (panic): Accept variable number of arguments.

2023-03-07  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* src/truetype/ttgload.c (TT_Process_Composite_Glyph): Fix leak too.

2023-03-07  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* src/truetype/ttgload.c (TT_Load_Simple_Glyph): Triage memory leak.

	This leak has been introduced in the previous commit and immediately
	detected:
	  https://chromium-review.googlesource.com/c/chromium/src/+/4313202

2023-03-06  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[truetype] Simplify memory management.

	Instead of using `Update_Max`, switch to regular FreeType memory
	allocation macros, stop pre-allocating the glyph instruction arrays.

	* src/truetype/ttgload.c (TT_Load_Simple_Glyph,
	TT_Process_Composite_Glyph): Switch to regular memory allocation.
	* src/truetype/ttinterp.c (Update_Max): Removed.
	(TT_Load_Context): Reallocate stack and free old instructions.
	(Modify_CVT_Check, Ins_WS): Switch to regular memory allocation.
	* src/truetype/ttinterp.h (Update_Max): Removed.

2023-03-06  David PROVENT  <dprovent@annecy-elec.local>

	Added information about the zlib version update in the changelog

2023-03-06  Alexei Podtelezhnikov  <apodtele@gmail.com>

	Fix a couple of MSVC warnings.

	* src/base/ftcalc.c (FT_MulAddFix): Add cast.
	* src/sfnt/ttcolr.c (tt_face_get_colorline_stops, read_paint): Ditto.

2023-03-05  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* builds/windows/vc2010/freetype.vcxproj: Suppress C4267 on _WIN64.

	This usually comes from `strlen` returning 64-bit `size_t`, which
	we often assign to 32-bit `FT_ULong` on Windows-64 (LLP64).

2023-03-05  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* src/cff/cffparse.c (cff_parser_run): Thinko.

2023-03-05  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[cff] Clean up CharString number encoding.

	* src/cff/cffparser.c (cff_parser_run): Work with signed numbers.

2023-03-05  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* src/cff/cffparse.c (cff_parser_run): Fix variable type.

2023-03-04  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[cff] Clean up memory management in the old engine.

	* src/cff/cffparse.c (finalize_t2_strings): Fix NULL-dereferencing
	in the out-of-memory situation, use `FT_FREE`.
	(cff_parser_run): Use FreeType memory allocation macros and avoid
	uninitialized pointers.

2023-03-04  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* src/cff/cffobjs.c (cff_size_init): Synonymous change.

2023-03-04  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* src/sfnt/sfobjs.c (sfnt_load_face): Shorten de-referencing.

2023-03-04  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[pfr] Shorten de-referencing.

	* src/pfr/pfrobjs.c (pfr_face_done, pfr_face_init): Use closer `memory`.
	* src/pfr/pfrgload.c (pfr_glyph_load_compound): Remove `loader`.

2023-03-03  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* src/cff/cffobjs.c (cff_size_get_globals_funcs): Shorten de-referencing.

2023-03-03  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[cff,cid,type1] Shorten de-referencing.

	* src/cff/cffobjs.c (cff_clot_init): Use immediate library reference.
	* src/cid/cidobjs.c (cid_slot_init): Ditto.
	* src/type1/t1objs.c (T1_GlyphSlot_Init): Ditto.

2023-03-02  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* configure: Use `sed` instead of `grep`.

	This is more portable and consistent with `autogen.sh`.

2023-03-02  Ben Wagner  <bungeman@chromium.org>

	Avoid strtol on non-null-terminated data.

	Technically, `strtol` can only be used with C strings terminated with
	`\0`.  CID data is not generally null-terminated and often does not
	contain a `\0` if it is hex-encoded.  AddressSanitizer with `ASAN_OPTIONS`
	containing `strict_string_checks=1` verifies this by using an adversarial
	`strtol` that always reads to the terminating `\0`.

	To avoid undefined behavior from `strtol` in `cid_parser_new`, use the
	parser to parse the tokens instead of attempting to parse them ad-hoc.
	This will internally use `PS_Conv_Strtol` to parse the integer, which
	respects the parser's limits and directly implements the PostScript
	parsing rules for integers.

	* src/cid/cidparse.c (cid_parser_new): Use the parser to parse the
	tokens.

	Fixes: https://bugs.chromium.org/p/chromium/issues/detail?id=1420329

2023-03-02  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* src/cff/cffload.c (cff_subfont_load): Synonymous update.

2023-03-01  ubawurinna  <ubawurinna-6079@yopmail.com>

	* src/gzip/README.freetype: Update version.

2023-03-01  ubawurinna  <you@example.com>

	[gzip] Fix static linking.

	Without this patch, static linking with MS Visual Studio causes linking
	errors.

	* src/gzip/ftgzip.c: Set `ZEXPORT` to nothing and `ZEXTERN` to static for
	all compilers.

2023-03-01  Werner Lemberg  <wl@gnu.org>

	* include/freetype/internal/compiler-macros.h (FALL_THROUGH): Update.

	This follows

	  https://lists.gnu.org/archive/html/bug-gnulib/2023-02/msg00200.html

2023-02-28  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[truetype] Treat 38 as 40 without Infinality.

	* include/freetype/ftdriver.h (TT_INTERPRETER_VERSION_38): Reinstate.
	* src/truetype/ttdriver.c (tt_property_set): Fallback from 38 to 40.

2023-02-26  Werner Lemberg  <wl@gnu.org>

	* include/freetype/internal/compiler-macros.h (FALL_THROUGH): Update.

	This follows

	  https://lists.gnu.org/archive/html/bug-gnulib/2023-02/msg00159.html

2023-02-26  Werner Lemberg  <wl@gnu.org>

	* src/*: Replace leading underscores with trailing ones in dummy variables.

	This is to avoid clang warnings.

2023-02-26  Karl Berry  <karl@freefriends.org>

	* configure: Don't hardcode `grep -E`.

	TeXLive still supports Solaris 5.10, where the system's `grep` doesn't
	accept the `-E` option.  We thus introduce an `EGREP` variable that is set
	to either `grep -E` or `-egrep`.

2023-02-26  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* src/cff/cffload.c (cff_encoding_load): Optimize array zeroing.

	This is unnecessary for predefined standard and expert encodings.
	Even for custom encodings the arrays might be already zeroed when
	CFF_FontRec is created but we keep it just in case.

2023-02-25  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* src/type1/t1load.c (T1_Get_MM_Var): Optimize array zeroing.

2023-02-25  Tamir Duberstein  <tamird@google.com>

	* src/base/ftsystem.c (ft_ansi_stream_io): Avoid undefined behaviour.
	Also short-circuit on `offset` to avoid checking `count` a second time when
	`ft_ansi_stream_io` is used for reading.

	Per ISO/IEC 9899:

	  If an argument to a function has an invalid value (such as a value outside
	  the domain of the function, or a pointer outside the address space of the
	  program, or a null pointer, or apointer to non-modifiable storage when the
	  corresponding parameter is not const-qualified) or a type (after
	  promotion) not expected by a function with variable number of arguments,
	  the behavior is undefined.  If a function argument is described as being
	  an array, the pointer actually passed to the function shall have a value
	  such that all address computations and accesses to objects (that would be
	  valid if the pointer did point to the first element of such an array) are
	  in fact valid.

	Per IEEE Std 1003.1:

	  size_t fread(void *restrict ptr, size_t size, size_t nitems,
	               FILE *restrict stream);

	  The `fread` function shall read into the array pointed to by `ptr` up to
	  `nitems` elements whose size is specified by `size` in bytes, from the
	  stream pointed to by `stream`.

	Since the first argument to `fread` is described as being an array, its
	behavior is undefined when that argument is a null pointer.

	Per the documentation on `ft_ansi_stream_io`:

	  If `count' is zero (this is, the function is used for seeking), a non-zero
	  return value indicates an error.

	Thus the intent is clear, and the call to `fread` can be skipped, avoiding
	undefined behaviour.

2023-02-21  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[raster] Clean up contour indexing.

	* src/raster/ftraster.c (Decompose_Curve, Convert_Glyph): Use consistent
	index types (Int) and compact iterations.

2023-02-21  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[autofit] Clean up contour indexing.

	* src/autofit/aflatin.c (af_latin_metrics_init_blues): Refactor.
	* src/autofit/afcjk.c (af_cjk_metrics_init_blues): Ditto.

2023-02-21  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* src/base/ftoutln.c (FT_Outline_Check): Fix C4701 warning.

2023-02-21  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* src/sdf/ftsdf.c (get_min_distance_cubic): Fix C4701, typos.

2023-02-20  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* src/base/ftstroke.c (FT_Stroker_ParseOutline): Clean up contour indexing.

2023-02-20  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[base] Clean up contour indexing.

	* src/base/ftoutln.c (FT_Outline_Reverse, FT_Outline_EmboldenXY,
	FT_Outline_Get_Orientation): Set the first and last indexes together.
	(FT_Outline_Decompose): Ditto and check them more stringently.
	* src/smooth/ftgrays.c (FT_Outline_Decompose)[STANDALONE_]: Ditto.

2023-02-20  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* src/base/ftoutln.c (FT_Outline_Check): Update error code, clean up.

2023-02-17  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[truetype] Hide Infinality.

	Remove Infinality as an option before its complete extraction.

	* include/freetype/ftoption.h: Remove the Infinality option.
	* devel/ftoption.h: Ditto.
	* include/freetype/ftdriver.h (TT_INTERPRETER_VERSION_38): Is 40 now.

2023-02-17  Alex Ringlein  <aringlein@figma.com>

	* src/base/ftoutln.c (FT_Outline_Reverse): Anchor first contour points.

	A cubic contour has to always start from an on-point. Therefore, we
	should not swap the first with the last point, which might be off, and
	obtain an invalid contour. This does not matter for conic contours.
	If anything, it also saves one swap there. Fixes #1207.

2023-02-16  Werner Lemberg  <wl@gnu.org>

	Documentation improvement for `FT_Bitmap`.

	Fixes #1205.

2023-02-10  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[type1/MM] Round design coordinates.

	The design coordinates for MM fonts were not rounded. For example,
	`FT_Get_Var_Design_Coordinates` returned values with fractional part.

	* src/type1/t1load.c (mm_axis_unmap): Refactor with rounding.

	* include/freetype/ftmm.h (FT_Var_Axis, FT_Set_Var_Design_Coordinates,
	FT_Get_Var_Design_Coordinates): Reword documentation.

2023-02-09  Jan Alexander Steffens (heftig)  <heftig@archlinux.org>

	* builds/meson/parse_modules_cfg.py: Handle `gxvalid` and `otvalid`.

	These need a name mapping similar to what was done for other modules,
	or linking will fail.

2023-02-09  Werner Lemberg  <wl@gnu.org>

	* build/toplevel.mk (do_dist): Fix typo.

2023-02-09  Werner Lemberg  <wl@gnu.org>

	* Version 2.13 released.
	==========================

	Tag sources with `VER-2-13-0'.

	* docs/VERSION.TXT: Add entry for version 2.13.
	* docs/CHANGES: Updated.

	* README, src/base/ftver.rc, builds/windows/vc2010/index.html,
	builds/windows/visualc/index.html, builds/windows/visualce/index.html,
	builds/wince/vc2005-ce/index.html, builds/wince/vc2008-ce/index.html,
	docs/freetype-config.1: s/2.12.1/2.13/, s/2121/2130/.

	* include/freetype/freetype.h (FREETYPE_MINOR): Set to 13.
	(FREETYPE_PATCH): Set to 0.

	* builds/unix/configure.raw (version_info): Set to 25:0:19.
	* CMakeLists.txt (VERSION_MINOR): Set to 13.
	(VERSION_PATCH): Set to 0.

2023-02-09  Alexei Podtelezhnikov  <apodtele@gmail.com>

	Comment on `FT_GlyphSlot_Slant'.

2023-02-08  Werner Lemberg  <wl@gnu.org>

	[autofit] Fix 'multi' compilation.

	* src/autofit/ft-hb.c: Decorate with `FT_LOCAL_DEF`.
	Add ANSI boilerplate code for otherwise empty file.
	* src/autofit/ft-hb.h: Include `compiler-macros.h` and `freetype.h`.
	Use `FT_BEGIN_HEADER` and `FT_END_HEADER`.
	Decorate with `FT_LOCAL`.

	* src/autofit/rules.mk (AUTOF_DRV_SRC): Add `ft-hb.c`.

2023-02-08  Werner Lemberg  <wl@gnu.org>

	Fix `FT_LOCAL` and `FT_LOCAL_DEF` tags.

2023-02-08  Werner Lemberg  <wl@gnu.org>

	Fix 'fall-through' warning messages.

	Modern compilers get more insistent on that...

	* include/freetype/internal/compiler-macros.h (FALL_THROUGH): Define.
	* src/*: Use it instead of `/* fall through */` comments.

2023-02-08  Werner Lemberg  <wl@gnu.org>

	For debugging, avoid implicit conversion from integer to double.

	Otherwise we get zillions of clang 15 warnings.

	* src/autofit/afcjk.c, src/autofit/afhints.c, src/autofit/aflatin.c,
	src/base/ftobjs.c, src/base/ftoutln.c, src/cff/cffparse.c,
	src/raster/ftraster.c, src/sfnt/pngshim.c, src/truetype/ttgload.c,
	src/truetype/ttgxvar.c, src/truetype/ttobjs.c, src/type1/t1gload.c: Use
	`double` cast in debugging and tracing macros.

2023-02-08  Werner Lemberg  <wl@gnu.org>

	Avoid reserved identifiers that are globally defined.

	This is mandated by the C99 standard, and clang 15 produces zillions of
	warnings otherwise.

	* devel/ftoption.h, include/freetype/config/ftoption.h,
	include/freetype/internal/ftmemory.h, src/autofit/afhints.h,
	src/autofit/afmodule.c, src/autofit/aftypes.h, src/base/ftadvanc.c,
	src/base/ftdbgmem.c, src/base/ftstream.c, src/bdf/bdflib.c,
	src/truetype/ttinterp.c: Replace identifiers of the form `_foo` with `foo_`.

2023-02-08  Werner Lemberg  <wl@gnu.org>

	Fix minor clang and clang++ warnings.

2023-02-08  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[truetype, type1] Additional variation tags.

	Sync with
	  https://learn.microsoft.com/en-us/typography/opentype/spec/dvaraxisreg#registered-axis-tags

	* src/truetype/ttgxvar.h (TTAG_ital): New tag.
	* src/truetype/ttgxvar.c (TT_Get_MM_Var): Use it.
	* src/type1/t1load.c (T1_Get_MM_Var): Handle 'slnt' and 'ital'.

2023-02-08  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* src/base/ftsynth.c (FT_GlyphSlot_Slant): Add vertical slant.
	* include/freetype/ftsynth.h (FT_GlyphSlot_Slant): Update it.

2023-02-08  anuj  <95867901+anuj99@users.noreply.github.com>

	[sdf] Use 32-bit integers internally.

	* src/sdf/ftsdfcommon.h (FT_16D16, FT_26D6): Use 32-bit integers
	  instead of `FT_Fixed` for internal data types. `FT_Fixed` i.e.
	  `signed long` is 64-bit on some architectures.

2023-02-07  Werner Lemberg  <wl@gnu.org>

	docs/CHANGES: Updated.

2023-02-04  Alexei Podtelezhnikov  <apodtele@gmail.com>

	Comment on optional ascender and descender.

2023-02-04  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* src/type1/t1afm.c (T1_Read_Metrics): Reaffirm ascender and descender.

2023-02-04  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* src/type1/t1afm.c (T1_Read_Metrics): Validate ascender and descender.

	The ascender and descender are optional in the AFM specifications.
	They could be omitted or even set to zero, e.g., in the current release
	of URW++ base 35 fonts.

2023-02-02  Werner Lemberg  <wl@gnu.org>

	* src/cff/cffgload.c (cff_slot_load): Avoid memory leak.

	Fixes issue #1204.

2023-02-01  Werner Lemberg  <wl@gnu.org>

	* src/truetype/ttgxvar.c (tt_var_get_item_delta): Check `face->blend`.

	Reported as

	  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=55581

2023-02-01  Werner Lemberg  <wl@gnu.org>

	* docs/CHANGES: Add news for 'freetype-demos'.

2023-01-30  Werner Lemberg  <wl@gnu.org>

	* subprojects/harfbuzz.wrap, subprojects/libpng.wrap: Updated.

2023-01-28  Werner Lemberg  <wl@gnu.org>

	Minor changes.

	Comment fixes, typos, removing of unnecessary parentheses.

2023-01-28  Werner Lemberg  <wl@gnu.org>

	Whitespace.

2023-01-27  Behdad Esfahbod  <behdad@behdad.org>

	[ttgxvar] Fix crash in COLRv1.

	This is a stopgap until issue #1202 is properly fixed.

	* src/truetype/ttxgvar.c (tt_var_get_item_delta): Check `normalizedcoords`.

2023-01-19  Werner Lemberg  <wl@gnu.org>

	The 'COLR' v1 API will no longer be experimental in the next release.

2023-01-18  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* docs/oldlogs/ChangeLog.210: Typos.

2023-01-18  Ben Wagner  <bungeman@chromium.org>

	[base] Fix typo.

	* src/base/ftobjs.c (open_face_PS_from_sfnt_stream): Request module 't1cid',
	not 'cid'.

2023-01-18  Ben Wagner  <bungeman@chromium.org>

	[base] Return error if requested driver is not found.

	In `open_face_from_buffer` it is possible that a driver is requested but
	FreeType was built without the requested module.  Return an error in this
	case to indicate that the request could not be satisfied, rather than trying
	all existing driver modules.

	* src/base/ftobjs.c (open_face_from_buffer): Return `FT_Err_Missing_Module`
	if a driver is specified but not found.

2023-01-18  Dominik Röttsches  <drott@chromium.org>

	[sfnt] Avoid nullptr dereference in reading malformed 'COLR' v1 table.

	Fixes https://bugs.chromium.org/p/chromium/issues/detail?id=1408044.

	* src/sfnt/ttcolr.c (tt_face_load_colr): When the 'COLR' v1 table header is
	too small, don't deallocate delta set index map structures.

2023-01-17  Werner Lemberg  <wl@gnu.org>

	* src/tools/update-copyright: Allow execution from other repositories.

	We use this for `freetype-demos`.

2023-01-17  Werner Lemberg  <wl@gnu.org>

	Update all copyright notices.

2023-01-17  Werner Lemberg  <wl@gnu.org>

	* src/tools/no-copyright: Updated.

2023-01-17  Ben Wagner  <bungeman@chromium.org>

	[base] 'close' callback may not use `stream->memory`.

	The documentation for `FT_StreamRec::memory` states that it 'shouldn't be
	touched by stream implementations'.  This is true even for internal
	implementations of the 'close' callback, since it is not guaranteed that
	`memory` will even be set when the 'close' callback occurs.

	* src/base/ftobjs.c (new_memory_stream): stash current `memory` in
	`stream->descriptor`.
	(memory_stream_close): Use it.

2023-01-17  Ben Wagner  <bungeman@chromium.org>

	[base] Always close user-provided stream.

	The `FT_Open_Face` documentation states

	> If `FT_OPEN_STREAM` is set in `args->flags`, the stream in `args->stream`
	> is automatically closed before this function returns any error (including
	> `FT_Err_Invalid_Argument`).

	However, if the user provides a stream in `args.stream` with
	`FT_OPEN_STREAM` set and a `close` function, but then for some reason passes
	NULL for `aface` and a non-negative `face_index`, the error
	`Invalid_Argument` is returned but the `close` callback will not be called
	on the user-provided stream.  This may cause resource leaks if the caller is
	depending on the `close` callback to free resources.

	The difficulty is that a user may fill out a `FT_StreamRec` and pass its
	address as `args.stream`, but the stream isn't really 'live' until
	`FT_Stream_New` is called on it (and `memory` is set).  In particular, it
	cannot really be cleaned up properly in `ft_open_face_internal` until the
	stream pointer has been copied into the `stream` local variable.

	* src/base/ftobj.c (ft_open_face_internal): Ensure that user-provided
	`args.stream.close` is called even with early errors.

2023-01-17  Ben Wagner  <bungeman@chromium.org>

	[base] Fix leak of internal stream marked external.

	`open_face_from_buffer` allocates a new `FT_Stream` to pass to
	`ft_open_face_internal`.  Because this is an `FT_OPEN_STREAM`,
	`ft_open_face_internal` will mark this as an 'external stream', which the
	caller must free.  However, `open_face_from_buffer` cannot directly free it
	because the stream must last as long as the face.  There is currently an
	attempt at this by clearing the 'external stream' bit after
	`open_face_from_buffer` returns successfully.  However, this is too late as
	the original stream may have already been closed and the stream on the face
	may not be the same stream as originally passed.

	It is tempting to use `FT_OPEN_MEMORY` and let `ft_open_face_internal`
	create the stream internally.  However, with this method there is no means
	to pass through a 'close' function to the created stream to free the
	underlying data, which must be owned by the stream.

	A possibility is to check on success if the stream of the face is the same
	as the original stream.  If it is then unset the external flag.  If not,
	then free the original stream.  Unfortunately, while no current
	implementation does so, it is possible that the face still has the original
	stream somewhere other than as the `FT_FaceRec::stream`.  The stream needs
	to remain available for the life of the face or until it is closed,
	whichever comes earlier.

	The approach taken here is to let the stream own itself.  When the stream is
	closed it will free itself.

	* src/base/ftobjs.c (memory_stream_close): Free `stream`.
	(open_face_from_buffer): Simplify error handling, since
	`ft_open_face_internal` always closes `args.stream` on any error.

	Fixes: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=54930

2023-01-16  Werner Lemberg  <wl@gnu.org>

	sr/*.c: Various minor fixes.

	* src/autofit/ft-hb.c (_hb_ft_reference_table): Call `FT_UNUSED` after
	variable declarations.

	* src/gxvalid/gxvjust.c (gxv_just_widthDeltaClusters_validate): Eliminate
	unused variable.

	* src/gzip/ftgzip.c: Don't call GCC '-Wstrict-prototypes' pragma for C++
	compiler.

	* src/sfnt/ttcolr.c (ENSURE_READ_BYTES): Remove final semicolon to avoid
	compiler warning.

	* src/sfnt/ttsvg.c (tt_face_load_svg_doc): Fix signedness warning.

2023-01-16  Dominik Röttsches  <drott@chromium.org>

	[sfnt] Remove temporary runtime flag for variable 'COLR' v1.

	Fixes #1187.

	* src/sfnt/ttcolr.c (top level, read_paint, tt_face_load_colr,
	tt_face_free_colr, get_deltas_for_var_index_base,
	tt_face_get_color_glyph_clipbox, tt_face_get_colorline_stops): Remove macro
	definition `VARIABLE_COLRV1_ENABLED` and its usage.

	* src/truetype/ttdriver.c (tt_property_set): Remove parsing of
	'TEMPORARY-enable-variable-colrv1' property name.

	* src/truetype/ttobjs.h (TT_DriverRec): Remove `enable_variable_colrv1`
	flag.

2023-01-07  Werner Lemberg  <wl@gnu.org>

	* src/autofit/ft-hb.c (_hb_ft_reference_table): Minor integration fixes.

2023-01-07  Ben Wagner  <bungeman@chromium.org>

	[truetype] Reset cvt and storage in context load.

	Currently the cvt and storage are saved and restored in `TT_RunIns`.
	However, this is too granular as the cvt and storage area should be set to
	the original cvt and storage area only when setting up the hinting context.
	This allows for the cvt and storage area to be modified while parsing
	multiple glyphs, as is the case with composite glyphs.

	* src/truetype/ttinterp.h (TT_ExecContextRec): Remove `origCvt` and
	`origStorage`.

	* src/truetype/ttinterp.c (TT_RunIns): Don't save and restore the cvt and
	storage area.
	(Modify_CVT_Check, Ins_WS): Switch from "if in glyph and using original data
	do copy on write" to "if in glyph and not using glyph specific data do copy
	on write".

2023-01-06  Matthias Clasen  <mclasen@redhat.com>

	[autofit] Don't depend on 'hb-ft'.

	The circular dependency is still there, but at least we no longer depend on
	the HarfBuzz API that is only present if HarfBuzz has been built with
	FreeType support, making the bootstrapping a bit easier.

	* src/autofit/ft-hb.c, src/autofit/ft-hb.h: New files, providing
	`_hb_ft_font_create`, which is more or less a verbatim copy of the
	corresponding HarfBuzz code from file `hb-ft.cc`.

	* src/autofit/afglobal.c (af_face_globals_new): Use it.
	* src/autofit/afshaper.h: Don't include `hb-ft.h` but `ft-hb.h`.
	* src/autofit/autofit.c: Include `ft-hb.c`.

	* LICENSE.TXT: Updated.

2023-01-06  Ben Wagner  <bungeman@chromium.org>

	[truetype] Keep variation store consistent.

	`tt_var_load_item_variation_store` fills out a `GX_ItemVarStore`.  While it
	may return an error, the item store must be left in a consistent state so
	that any use or destruction of the item store can properly use or free the
	data in it.  Before this change the counts from the font data were read
	directly into the item store before the actual allocation of the arrays to
	which they referred.  There exist many opportunities between the time the
	counts are read and the arrays are allocated to return early due to invalid
	data.  When this happened the item store claimed to have entires it actually
	did not, leading to crashes later when it was used.

	Fixes: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=54449

	* src/truetype/ttgxvar.c (tt_var_load_item_variation_store): Read the counts
	into local variables and store them in the item store only after the related
	arrays are actually created on the item store.

2023-01-05  Ben Wagner  <bungeman@chromium.org>

	[base] Report used stream's external status.

	In `open_face` the initial stream is set on the face, along with the
	information about if FreeType is the owner of the stream object itself.  The
	loaders may in the course of their work replace this stream with a new
	stream (as is the case for 'woff' and 'woff2'), which may have a different
	ownership than the initial stream object (likely the original stream object
	is owned by the user and is external, while the new stream object is created
	internally to FreeType and is internal).  When the stream is replaced, the
	face's flags are updated with the new ownership status.

	However, `open_face` cannot itself free this stream as its caller
	`ft_open_face_internal` is responsible for this.  In addition, in the case
	of an error `open_face` cannot return an actual face with the new stream and
	its ownership status to the caller.  As a result, it must pass this
	information back to the caller as a sort of "failed face" so that the caller
	can clean up.

	`open_face` was already passing back the new stream but was not passing back
	the stream ownership information.  As a result the stream may not have been
	free'd when needed.

	Fixes https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=54700

	* src/base/ftobjs.c (open_face): Pass back the ownership information as
	well.
	(ft_open_face_internal): Updated.

2023-01-05  Noah Cabral  <cnoah1705@gmail.com>

	fix spelling err in LICENSE.txt

2023-01-05  Dominik Röttsches  <drott@chromium.org>

	[sfnt] Fix color stop bounds check calculation at table end.

	Fixes https://bugs.chromium.org/p/skia/issues/detail?id=14021

	* src/sfnt/ttcolr.c (VAR_IDX_BASE_SIZE): New macro.
	(tt_face_get_colorline_stops): Fix off-by-one bounds check calculation, take
	`VarColorStop` into account, and hopefully make it easier to read.

2023-01-05  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* src/base/ftobjs.c (FT_Request_Metrics): Avoid division by zero.

	The division-by-zero might happen in broken fonts (see #1194).
	Instead of returning a huge number from FT_DivFix and failing
	to scale later, we now bail immediately.

2022-12-20  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[psaux] Delay the upem validity assertion.
	
	Fixes #1194.
	
	* src/psaux/psft.c (cf2_getUnitsPerEm): Remove the upem assert.
	(cf2_checkTransform): Assert the upem validity after checking the scale.

2022-12-14  David Vanderson  <david.vanderson@gmail.com>
	    Werner Lemberg  <wl@gnu.org>

	[gzip] Make static compilation not leak global symbols.

	* src/gzip/ftgzip.c (HAVE_HIDDEN): Do not define; it is no longer needed
	because everything is static.
	(HAVE_MEMCPY): Define.
	(zcalloc, zcfree): Remove no longer needed definitions (because `Z_SOLO` is
	active).

	* src/gzip/patches/freetype-zlib.diff: Regenerated.

	Fixes #1146.

2022-12-14  Werner Lemberg  <wl@gnu.org>

	* src/gzip/ftzconf.h: Updated to zlib 1.2.13.

	I forgot to copy that file.

2022-12-14  Werner Lemberg  <wl@gnu.org>

	* builds/unix/configure.raw: Don't check for `memcpy` and `memmove`.

	We expect a C99 compiler, and both functions are part of this standard.

2022-12-13  Werner Lemberg  <wl@gnu.org>

	[sdf, sfnt] Handle minor compiler warnings.

	* src/sdf/ftsdf.c (get_min_distance_conic): Initialize `nearest_point`.

	* src/sfnt/ttsvg.c (find_doc): Initialize `mid_doc`.

	Fixes #1195.

2022-12-07  Werner Lemberg  <wl@gnu.org>

	* subprojects/zlib.wrap: Micro-update from upstream.

2022-12-06  Jiří Malák  <malak.jiri@gmail.com>

	* include/freetype/internal/ftcalc.h (FT_MSB): Support Open Watcom 2.0.

	Closes !232.

2022-11-23  Luca Bacci  <luca.bacci982@gmail.com>

	* src/base/ftdbgmem.c (ft_mem_source_compare): Add FT_COMPARE_DEF.

	Closes !230.

2022-11-21  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* src/autofit/afloader.c (af_loader_load_glyph): Remove `size` check.

	This is done by `FT_Load_Glyph`.

2022-11-18  Alexei Podtelezhnikov  <apodtele@gmail.com>

	Comments added.

2022-11-16  Johan Matsson  <mjunix@ at github>

	* src/autofit/afloader.c (af_loader_load_glyph): Fix dereference.

	This must happen after the NULL check.

	Taken from

	  https://github.com/freetype/freetype/pull/2

2022-11-15  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* src/pcf/pcfutil.c ({Two,Four}ByteSwap): Use builtins or shifts.

	We trust glibc which uses shifts or builtins to swap bytes.  This
	must be more efficient.

2022-11-14  Werner Lemberg  <wl@gnu.org>

	* src/truetype/ttgxvar.c (tt_hvadvance_adjust): Integer overflow.

	Reported as

	  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=50462

2022-11-14  Loïc Yhuel  <loic.yhuel@softathome.com>

	[meson] Use generated ftmodule.h

	ftmodule.h is generated at the root of the build directory, but FT_CONFIG_MODULES_H
	(freetype/config/ftmodule.h) is used instead.
	This makes the build fail when disabling modules in modules.cfg.

	* meson.build (harfbuzz_dep): Add '-DFT_CONFIG_MODULES_H=<ftmodule.h>'.

2022-11-14  Loïc Yhuel  <loic.yhuel@softathome.com>

	[meson] Fix generated ftmodule.h

	The sdf module wasn't recognized, so the generated ftmodule.h had "None_renderer_class".

	* builds/meson/parse_modules_cfg.py: Handle sdf in RASTER_MODULES.

2022-11-12  Dominik Röttsches  <drott@chromium.org>

	Add `TT_CONFIG_OPTION_NO_BORING_EXPANSION` configuration macro.

	This gives users a possibility to deactivate new features not (yet) in the
	OpenType standard.

	* include/freetype/config/ftoption.h, devel/ftoption.h
	(TT_CONFIG_OPTION_NO_BORING_EXPANSION): New macro.

	* src/truetype/ttgxvar.c (ft_var_load_avar): Use it to disable 'avar'
	version 2.0 support.

2022-11-12  Behdad Esfahbod  <behdad@behdad.org>

	[truetype] Improve bounds checks for `ItemVariationStore`.

	* src/truetype/ttgxvar.c (tt_hvadvance_adjust): Move bounds check ...
	(tt_var_get_item_delta): ...  to this function, because it is safer.  For
	example, the 'avar' table 2.0 codepath was not performing a bounds check at
	all.

2022-11-12  Behdad Esfahbod  <behdad@behdad.org>

	[truetype] In `ItemVariationStore`, value 0xFFFF for `dataCount` is valid.

	It corresponds to outer indices of 0 to 0xFFFE.

	* src/truetype/ttgxvar.c (tt_var_load_item_variation_store): Remove invalid
	code.

2022-11-11  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[pcf] Improve CMap efficiency and readability.

	* src/pcf/pcfdrivr.c (pcf_cmap_char_{index,next}): Check and walk
	the encoding array indexes.

2022-11-10  Sam James  <sam@gentoo.org>

	Fix `-Wstrict-prototypes`.

	* builds/unix/configure.raw: Fix `-Wstrict-prototypes`.
	Clang 16 warns on these and they will be dropped in C23.

	* builds/unix/freetype2.m4: Ditto.

2022-11-09  Ben Wagner  <bungeman@chromium.org>

	[truetype] Check avar_segment before access

	* src/truetype/ttgxvar.c (tt_done_blend): check `avar_segment` before
	accessing to free its `correspondence`.

	Reported as:

	  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=53062

2022-11-09  Ben Wagner  <bungeman@chromium.org>

	[truetype] Restore behavior of ft_var_load_hvvar

	* src/truetype/ttgcvar.c (ft_var_load_hvvar): restore previous behavior

	In a previous change [0] the behavior of `ft_var_load_hvvar` was changed
	to not load the item variation store if it was at offset 0, but not
	return an error when this happened. This broke any users, like
	`tt_hvadvance_adjust`, that rely on successful completion of
	`ft_var_load_hvvar` to imply that returned table's `itemStore` had been
	initialized. This lead such users to dereference NULL.

	This change appears to have been unintentional and unrelated to the
	actual avar2 changes. As a result, fix these NULL dereferences by
	restoring the code to always attempt to initialize the `itemStore`.

	[0] ae4eb996 "[truetype] Add support for `avar` table 2.0 format."

	Reported as

	  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=53061

2022-11-08  Werner Lemberg  <wl@gnu.org>

	docs/CHANGES: Updated.

2022-11-08  suzuki toshiya  <mpsuzuki@hiroshima-u.ac.jp>

	[build] use AC_CHECK_PROG() macro for libpng-config detection

	* builds/unix/configure.raw: use AC_CHECK_PROG() instead of `which` to find `libpng-config`.

2022-11-08  suzuki toshiya  <mpsuzuki@hiroshima-u.ac.jp>

	[build] fix for make multi

	Fix "make multi" by MR !223

	* include/freetype/internal/services/svmm.h: include ftmm.h to define FT_Get_MM_Func.
	* src/truetype/ttgxvar.h: include ftmmtypes.h to use GX_AVarTable properly.
	* src/base/ftmac.c: include ftdebug.h to use FT_THROW() properly.

2022-11-08  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* src/pfr/pfrsbit.c (pfr_lookup_bitmap_data): Accelerate the search.

	This is mostly for consistency because PFR fonts with bitmap strikes
	do not seem to exist.

2022-11-06  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[bdf, pfr, psnames] Accelarate charmap searches.

	The binary searches within charmaps can be accelerated because they
	often contain dense continuous blocks of character codes. Within such
	blocks, you can predict matches based on misses.  This method has been
	deployed in `bdf` since 0f122fef34; we only refactor it there.  We now
	use it in `pfr` and `psnames`, which speeds up the unicode charmap
	access by about 50% in PFR and Type 1 fonts.

	* src/bdf/bdfdrivr.c (bdf_cmap_char_{index,next}): Refactor.
	* src/pfr/pfrcmap.c (pfr_cmap_char_{index,next}): Predict `mid` based
	on the mismatch distance.
	* src/psnames/psmodule.c (ps_unicodes_char_{index,next}): Ditto.

2022-11-04  Behdad Esfahbod  <behdad@behdad.org>

	[truetype] Add support for `avar` table 2.0 format.

	See

	  https://github.com/harfbuzz/boring-expansion-spec/blob/main/avar2.md

	for the specification.

	Currently, this is implemented only in most recent OS versions on Apple
	platforms and in the HarfBuzz library, but it is expected to be added to the
	OpenType standard soon.

	* src/truetype/ttgxvar.h (GX_AVarTableRec): New structure.
	(GX_BlendRec): Use it to replace `avar_segment` with `avar_table`.

	* src/truetype/ttgxvar.c (ft_var_load_avar): Load new table version.
	(ft_var_to_normalized, tt_done_blend): Extend for new format.
	(ft_var_load_hvvar, ft_var_to_design): Updated.

2022-10-24  Werner Lemberg  <wl@gnu.org>

	Replace '1/64th' (and similar entries) with '1/64' in docs and comments.

2022-10-24  Ivan Panchenko  <ivanpan3@gmail.com>

	* include/freetype/*: Fix documentation typos.

2022-10-21  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* src/truetype/ttgload.c: Cosmetic changes.

2022-10-21  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[cff, truetype] Simplify SVG metrics scaling.

	Use pre-calculated scaling factors. Also, the advance widths used
	to be rounded, which was incorrect.

	* src/cff/cffgload.c (cff_slot_load): Use `x_scale` and `y_scale`.
	* src/truetype/ttgload.c (TT_Load_Glyph): Ditto.

2022-10-20  Werner Lemberg  <wl@gnu.org>

	* subprojects/zlib.wrap: Update to zlib version 1.2.13.

2022-10-18  Dominik Röttsches  <drott@chromium.org>

	[sfnt] Additional bounds checks for `COLR` v1 table handling.

	* src/sfnt/ttcolr.c (read_paint): Add `colr` argument, necessary for...
	... another use of `ENSURE_READ_BYTES`.
	Update callers.
	(tt_face_get_paint_layers): Ensure that the 4-byte paint table
	offset can be read.

	This is a follow-up to !124 and issue
	https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=52404

2022-10-18  Werner Lemberg  <wl@gnu.org>

	[gzip] Update sources to zlib 1.2.13.

2022-10-18  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* src/sfnt/ttsbit.c (tt_face_load_strike_metrics): Simplify calculations.

2022-10-18  Werner Lemberg  <wl@gnu.org>

	Minor formatting.

2022-10-18  Dominik Röttsches  <drott@chromium.org>

	[sfnt] Guard individual `COLR` v1 paint field reads.

	* src/sfnt/ttcolr.c (ENSURE_READ_BYTES): New macro.
	(read_paint): Use it – after the start pointer `p` has been checked for
	whether it allows reading the format byte, each successive paint table field
	read need to be bounds-checked before reading further values.

	Reported as

	  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=52404

2022-10-17  Xiang Xiao  <xiaoxiang@xiaomi.com>

	* builds/toplevel.mk: Prefix all paths with `$(TOP_DIR)/`.

	This is useful for builds that are not started from the root directory.

2022-10-17  Liu Kunpeng(柳鲲鹏)  <liukunpeng@ts-it.cn>

	* src/base/ftsynth.c (FT_GlyphSlot_Slant): New API with custom slant.
	* include/freetype/ftsynth.h (FT_GlyphSlot_Slant): Declare it.

2022-10-15  Alexei Podtelezhnikov  <apodtele@gmail.com>

	Note the lack of floating-point data types.

2022-10-10  Werner Lemberg  <wl@gnu.org>

	[cff] Remove `FT_CONFIG_OPTION_NO_GLYPH_NAMES`.

	This ancient option stayed completely undocumented.  Given that the 'cff'
	driver requires the 'psnames' module, it makes no sense today to have this
	macro.

	* src/cff/cffdrivr.c (cff_services), src/cff/cffobjs.c (cff_face_init):
	Remove corresponding conditional code.

2022-10-10  Werner Lemberg  <wl@gnu.org>

	Synchronize `ftoption.h` flavours.

2022-10-10  Werner Lemberg  <wl@gnu.org>

	Minor comment changes.

2022-10-05  Alexei Podtelezhnikov  <apodtele@gmail.com>

	Improve FT_Get_Name_Index docs and place it next to FT_Get_Glyph_Name.

2022-10-04  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[autofit] Reset the face charmap directly.

	There is no need to validate the original charmap in `FT_Set_Charmap`.
	It can be reset directly.

	* src/autofit/afglobal.c (af_face_globals_compute_style_coverage):
	Use direct assignment.
	* src/autofit/af{latin,cjk,indic}.c (af_latin_metrics_init): Ditto.

2022-10-04  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* src/type1/t1afm.c (T1_Read_PFM): Set charmaps directly.

	As with the previous commit, we can avoid the validation checks
	of `FT_Set_Charmap` and set it directly when choosing from the
	available list.

2022-10-03  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* src/cache/ftccmap.c (FTC_CMapCache_Lookup): Avoid `FT_Set_Charmap`.
	
	Set charmap aggressively without all validations of `FT_Set_Charmap`
	because we take it from the available array and only temporarily.
	Even CMap Format 14 will gracefully return 0.

2022-10-03  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* src/cache/ftcbasic.c (ftc_basic_family_get_count): Remove redundancy.

2022-09-30  Werner Lemberg  <wl@gnu.org>

	* src/psaux/pshints.c (cf2_hintmap_insertHint): Fix midpoint computation.

	Replace '(start + end) / 2' with 'start + (end - start) / 2' to avoid
	overflow.

	Fixes #1180.

2022-09-30  Werner Lemberg  <wl@gnu.org>

	* src/psaux/pshints.c (cf2_hintmap_build): Improve debugging output.

2022-09-29  mlugg  <mlugg@mlugg.co.uk>

	[truetype] Fix undefined pointer arithmetic.

	* src/truetype/ttgxvar.c (tt_var_get_item_delta, ft_var_load_mvar): Use
	`FT_OFFSET`.

2022-09-29  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* src/sfnt/ttsbit.c (tt_face_load_strike_metrics): Use lighter FT_DivFix.

2022-09-29  Ali Chraghi  <alichraghi@pm.me>

	[base] FT_Attach_Stream: Make `parameters` argument constant.

2022-09-29  Azamat Hackimov  <azamat.hackimov@gmail.com>

	* src/tools/*.py: Migrate to Python 3.

	Fixes #1185, closes !205. Formatting changes according to PEP8.

2022-09-27  Dominik Röttsches  <drott@chromium.org>

	[sfnt] Guard access in 'COLR' table when requesting child table pointer.

	* src/sfnt/ttcolr.c (tt_face_get_colorline_stops, read_paint): Tighten
	pointer bounds checks.
	(get_child_table_pointer): Check whether incoming pointer `p` lies within
	the 'COLR' table.

	Reported as

	  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=51816

2022-09-27  Ben Wagner  <bungeman@chromium.org>

	[sfnt] Add SVG document bounds checking.

	Add a check that the document content is actually contained within the
	`SVG ` table.  Without this check a malformed font may claim arbitrary
	memory as its document content.

	* src/sfnt/ttsvg.c (tt_face_load_svg): Take `numEntries` into account when
	testing 'documentRecord' extents.
	(find_doc): Rename `stream` to `document_records` for clarity.
	(tt_face_load_svg_doc): Split `doc` from `doc_list` pointer for clarity.
	Test that the document content is contained within the table.
	Ensure minimum length of document before testing for gzip format.

	Reported as

	  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=51812

2022-09-23  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[base] Clean up the bitmap flow control.

	* src/base/ftbitmap.c (FT_Bitmap_Copy): Flip the copy if its pitch
	is trully opposite, zero is not a positive value.
	(FT_Bitmap_Convert): Set negative pitch as needed, accept negative
	alignment values.

2022-09-22  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[base] Discard and recreate bitmaps for copying and converting.
	
	Reusing target bitmaps for copying and converting is permitted.  It is,
	however, pointless to preserve their content before overwriting.  Free-
	malloc might be faster than realloc.
	
	* src/base/ftbitmap.c (FT_Bitmap_Copy, FT_Bitmap_Convert): Free
	an old buffer and create a new one.

2022-09-16  Dominik Röttsches  <drott@chromium.org>

	Reject 'COLR' table if version is 1 but header too small.

	* src/sfnt/ttcolr.c (tt_face_load_colr): If the version is determined to
	be 1, then the table size has to be at least the size of the v1 header.
	Also, for peeking the number of base glyphs and entries in the layer list,
	ensure that the table is sufficiently long.

	Fixes #1179.  Original patch by Sergey Temnikov.

2022-09-15  Werner Lemberg  <wl@gnu.org>

	* src/otvalid/otvgsub.c (otv_SingleSubst_validate): Fix format 1 handling.

	Fixes #1181.

2022-09-06  Dominik Röttsches  <drott@chromium.org>

	[truetype] Reject 'fvar' loading when `num_instances` is too small.

	* src/truetype/ttgxvar.c (TT_Get_MM_Var): Reject retrieving master when
	'fvar' values locally do not match with sanitized values from initialization
	at `sfnt_init_face` time.

	Reported as

	  https://bugs.chromium.org/p/chromium/issues/detail?id=1360295

2022-09-05  Dominik Röttsches  <drott@chromium.org>

	[sfnt] Handle variable `COLR` v1 fonts without delta set index map

	Fixes #1178.

	* src/sfnt/ttcolr.c (get_deltas_for_var_index_base): Set outer index to
	0 and inner index to the delta index when retrieving deltas if the
	`COLR` table has no delta set index map.

2022-09-05  Dominik Röttsches  <drott@chromium.org>

	[sfnt] Pointer sanity checks before reading layer info in 'COLR' v0

	* src/sfnt/ttcolr.c (tt_face_get_colr_layer): Check that the pointer to
	read from is within the 'COLR' table.

	Reported as

	  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=50633

2022-09-05  Werner Lemberg  <wl@gnu.org>

	[autofit] Minor fix.

	* src/autofit/afglobal.c (af_face_globals_compute_style_coverage): Avoid
	compiler warning.

2022-09-05  Dominik Röttsches  <drott@chromium.org>

	[sfnt] Don't require 'gvar' table to support variation fonts.

	Fixes #1172.

	* src/sfnt/sfobjs.c (sfnt_load_face): Tag font as Multiple Masters font if
	`fvar` is present; do not require other tables to be present.

	* src/truetype/ttgxvar.c (tt_set_mm_blend): Allow for a missing 'gvar' table
	when setting variation coordinates.  However, if a 'gvar' table is actually
	present, do perform a sanity check and fail on malformedness.
	(TT_Get_MM_Var): Don't assume 'fvar' needs 'gvar' or 'CFF2 tables in all
	cases, which is an overly tight check.

2022-08-27  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* src/base/ftver.rc: Explicitly use UTF-16.

	Fixes #1177 to avoid mistranslation and other problems.

2022-08-26  Dominik Röttsches  <drott@chromium.org>

	[sfnt] Avoid undefined shifts in `COLR` v1 color line retrieval

	* src/sfnt/ttcolr.c (tt_face_get_colorline_stops): Disambiguate shift
	behavior by using multiplication using macros from ftcalc.h.

	Fixes: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=50573

2022-08-21  Sean Farrell  <sean.farrell@rioki.org>

	CMakeLists.txt (FT_ENABLE_ERROR_STRINGS): New configuration option.

	This option uncomments FreeType configuration macro
	`FT_CONFIG_OPTION_ERROR_STRINGS` to make function `FT_Error_String` return
	meaningful error strings.

	This option is off by default.

2022-08-21  Chris Liddell  <chris.liddell@artifex.com>

	[base, type1] Better handling of out-of-memory situations.

	This follows similar code in `cff_slot_done`.

	* src/base/ftobjs.c (ft_glyphslot_done), src/type1/t1objs.c
	(T1_GlyphSlot_Done): Check `internal` pointer.

	The Type1 problems was reported as

	  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=50057.

2022-08-06  Tim-Philipp Müller  <tim@centricular.com>

	ci: bump windows image and use newer runner and vs2019

	The old 1809 runner will be decommissioned at some point.

2022-08-04  @udoudou  <>

	* src/cache/ftcmanag.c (FTC_Manager_New): Initialize `cur_weight`.

	See !192.

2022-08-02  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* src/sfnt/ttload.c: Trace formatting updates.

2022-08-02  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* src/psaux/psobjs.c (ps_table_release): Remove redundant casting.

2022-08-02  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* src/base/ftobjs.c (Mac_Read_sfnt_Resource): Reduce casting.

2022-08-02  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[cache] Remove some casts, clean up tracing.

	* src/cache/ftcbasic.c (FTC_ImageCache_Lookup, FTC_SBitCache_Lookup):
	Clean up tracing types.
	* src/cache/ftccache.c (ftc_node_destroy): Ditto.
	* src/cache/ftcmanag.c (FTC_Manager_Check): Ditto.
	(FTC_Manager_Check, FTC_Node_Unref): Remove a cast.
	* src/cache/ftccmap.c (FTC_CMapCache_Lookup): Ditto.

2022-08-01  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[autofit] Updated to reduce casting (cont'd).

	* src/autofit/afmodule.h (AF_ModuleRec): Change `default_script` type.
	* src/autofit/afglobal.c (af_face_globals_compute_style_coverage):
	Remove casting.
	* src/autofit/afmodule.c (af_property_{set,get}): Updated accordingly.

2022-08-01  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[autofit] Updated to reduce casting.

	* src/autofit/afglobal.h (AF_FaceGlobalsRec): Change `glyph_count` type.
	* src/autofit/afglobal.c (af_face_globals_compute_style_coverage,
	af_face_globals_get_metrics, af_face_globals_is_digit,
	af_face_globals_new): Changed local types and updated accordingly.
	* src/autofit/aflatin.c (af_latin_metrics_init_blues): Ditto.

2022-08-01  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[psaux] Remove unused structure field.

	* include/freetype/internal/psaux.h (PS_TableRec): Remove `num_elems`.
	* src/psaux/psobjs.c (ps_table_new): Remoove its initialization.

2022-07-30  Dominik Röttsches  <drott@chromium.org>

	[sfnt] Implement VarClipBox.

	* src/sfnt/ttcolr.c (tt_face_get_color_glyph_clipbox): Depending on the
	format, read `var_index_base`, then retrieve and apply scaled deltas.

2022-07-30  Dominik Röttsches  <drott@chromium.org>

	[sfnt] Fix typo in clip box computation.

	* src/sfnt/ttcolr.c (tt_face_get_color_glyph_clipbox): Use appropriate
	scale factor for `yMin` and `yMax`.

2022-07-30  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[autofit] Use unsigned accounting for hints.

	* src/autofit/afhints.h (AF_AxisHintsRec): Use unsigned types.

	* src/autofit/afhints.c (af_axis_hints_new_{segment,edge},
	af_glyph_hints_get_num_segments, af_glyph_hints_get_segment_offset):
	Updated accordingly.
	* src/autofit/aflatin.c (af_cjk_hints_compute_edges): Ditto.
	* src/autofit/afcjk.c (af_cjk_hints_compute_edges): Ditto.

2022-07-30  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* src/autofit/afhints.h: Remove dead code.

2022-07-29  Werner Lemberg  <wl@gnu.org>

	* src/base/ftglyph.c (FT_Get_Glyph): Set `*aglyph` to NULL in case of error.

2022-07-29  Werner Lemberg  <wl@gnu.org>

	Fix compilation if `TT_CONFIG_OPTION_GX_VAR_SUPPORT` is not set.

	* src/sfnt/ttcolr.c: Protect relevant code with
	`TT_CONFIG_OPTION_GX_VAR_SUPPORT`.

2022-07-29  Werner Lemberg  <wl@gnu.org>

	Fix clang14 compiler warnings.

	* include/freetype/internal/ftstream.h (FT_GET_SHORT_LE, FT_GET_USHORT_LE):
	Fix type.

	* src/sfnt/ttcolr.c (get_deltas_for_var_index_base): Always return boolean
	value.
	(tt_face_get_colorline_stops): Fix type of `var_index_base`.

2022-07-26  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[pfr] Fortify the kerning code.

	Any array index must be strictly less then the array size. Therefore,
	we must reject indexes that are equal to the array size.  Alternatively,
	we should move the bounds check before the index decrement but that
	would be confusing.

	In addition, it is ok to decrement zero (.notdef) and get UINT_MAX,
	which is then automatically rejected in the bounds check.

	* src/pfr/pfrobjs.c (pfr_face_get_kerning): Fix the bounds checking.

2022-07-26  Werner Lemberg  <wl@gnu.org>

	[pfr] Add some safety guards.

	* src/pfr/pfrload.c (pfr_phy_font_load): Check resolutions and number of
	characters.

	Fixes #1174.

2022-07-26  Werner Lemberg  <wl@gnu.org>

	* src/pfr/*.c: Trivial improvements and formatting.

2022-07-24  Werner Lemberg  <wl@gnu.org>

	* configure: s/egrep/grep -E/

	`egrep` is deprecated.

2022-07-23  Ben Wagner  <bungeman@chromium.org>

	[base] Build outlines in amortized constant time.

	When resizing the loader's points and contours, resize them to at least 1.5
	times their current size.  The code currently only reserves as much space as
	is currently required, leading to O(n^2) runtime when adding points one at a
	time.

	This change does not attempt to ever shrink the loader's point and contour
	storage since this was not attempted previously either.  The 1.5 multiple
	was chosen as a trade-off between potentially unused space and the runtime.

	* src/base/ftgloader.c (FT_GlyphLoader_CheckPoints): Implement it.

	Fixes #1173.

2022-07-09  Dominik Röttsches  <drott@chromium.org>

	[sfnt] Support variable 'COLR' v1 `PaintVarSkew*`.

	* src/sfnt/ttcolr.c (FT_PaintFormat_Internal): New enumeration values
	`FT_COLR_PAINTFORMAT_INTERNAL_VAR_SKEW`,
	`FT_COLR_PAINTFORMAT_INTERNAL_SKEW_CENTER`, and
	`FT_COLR_PAINTFORMAT_INTERNAL_VAR_SKEW_CENTER`.
	(read_paint): Handle new enumeration values.

2022-07-09  Dominik Röttsches  <drott@chromium.org>

	[sfnt] Support variable 'COLR' v1 `PaintVarRotate*`.

	* src/sfnt/ttcolr.c (FT_PaintFormat_Internal): New enumeration values
	`FT_COLR_PAINTFORMAT_INTERNAL_VAR_ROTATE` and
	`FT_COLR_PAINTFORMAT_INTERNAL_VAR_ROTATE_CENTER`.
	(read_paint): Handle new enumeration values.

2022-07-09  Dominik Röttsches  <drott@chromium.org>

	[sfnt] Support 'COLR' v1 variable `PaintVarScale*`.

	* src/sfnt/ttcolr.c: (FT_PaintFormatInternal): New enumeration values
	`FT_COLR_PAINTFORMAT_INTERNAL_VAR_SCALE`,
	`FT_COLR_PAINTFORMAT_INTERNAL_VAR_SCALE_CENTER`,
	`FT_COLR_PAINTFORMAT_INTERNAL_VAR_SCALE_UNIFORM`, and
	`FT_COLR_PAINTFORMAT_INTERNAL_VAR_SCALE_UNIFORM_CENTER`.
	(read_paint): Handle new enumeration values.

2022-07-09  Dominik Röttsches  <drott@chromium.org>

	[sfnt] Support for 'COLR' v1 variable translate.

	* src/sfnt/ttcolr.c (FT_PaintFormat_Internal): New enumeration value
	`FT_COLR_PAINTFORMAT_INTERNAL_VAR_TRANSLATE`.
	(read_paint): Handle new enumeration value.

2022-07-09  Dominik Röttsches  <drott@chromium.org>

	[sfnt] Support for 'COLR' v1 variable transforms.

	* src/sfnt/ttcolr.c (FT_PaintFormat_Internal): New enumeration value
	`FT_COLR_PAINTFORMAT_INTERNAL_VAR_TRANSFORM`.
	(read_paint): Handle new enumeration value.

2022-07-09  Dominik Röttsches  <drott@chromium.org>

	[sfnt] Deltas for 'COLR' v1 gradient coordinates.

	* src/sfnt/ttcolr.c (read_paint) [TT_CONFIG_OPTION_GX_VAR_SUPPORT]: Read and
	apply deltas to radial, linear, and sweep gradient coordinates such as 'p0',
	'p1', 'p2', 'center', 'radii', and 'angles'.

2022-07-08  Dominik Röttsches  <drott@chromium.org>

	[sfnt] Support variable 'COLR' v1 color lines.

	* include/freetype/ftcolor.h (FT_ColorStopIterator): Add field
	`read_variable` to indicate whether a variation index base should be read.

	* src/sfnt/ttcolr.c: (FT_PaintFormat_Internal): New enumerations
	`FT_COLR_PAINTFORMAT_INTERNAL_VAR_LINEAR_GRADIENT`
	`FT_COLR_PAINTFORMAT_INTERNAL_VAR_RADIAL_GRADIENT`, and
	`FT_COLR_PAINTFORMAT_INTERNAL_VAR_SWEEP_GRADIENT`.
	(read_color_line): New parameter `read_variable`; update callers.
	(read_paint): Handle new enumerations.

2022-07-07  Dominik Röttsches  <drott@chromium.org>

	[sfnt] Apply variation deltas to `PaintVarSolid`.

	* src/sfnt/ttcolr.c (FT_PaintFormat_Internal_): New enumeration
	`FT_COLR_PAINTFORMAT_INTERNAL_VAR_SOLID`.

	(get_deltas_for_var_index_base) [TT_CONFIG_OPTION_GX_VAR_SUPPORT]: New
	function to retrieve an array of delta values, which will be used for most
	of 'COLR' v1 variation formats (in follow-up commits).

	(read_paint): Add `face` parameter; update caller.
	Handle `FT_COLR_PAINTFORMAT_INTERNAL_VAR_SOLID`.

2022-07-07  Dominik Röttsches  <drott@chromium.org>

	[sfnt] Check safety of cast to `TT_Driver` before accessing member.

	* src/sfnt/ttcolr.c (VARIABLE_COLRV1_ENABLED): Access
	`enable_variable_colrv1` only if driver class matches.

2022-07-06  Stephen Holdaway  <stecman@gmail.com>

	doc: Clarify description of `FT_Stream_IoFunc`.

	The existing documentation comments on `FT_Stream_IoFunc` hinted at the dual
	seek/read behavior required for custom stream implementations to work, but
	it didn't explicitly explain it.  Without looking at the internals of
	FreeType, it was easy for someone to assume their implementation should
	handle both seek and read operations all the time.  If this is done, you get
	a variety of errors, but mostly just `Unknown_File_Format` (error code
	0x02).

2022-07-04  Dominik Röttsches  <drott@chromium.org>

	[sfnt] Load variation store for 'COLR' v1.

	* src/sfnt/ttcolr.c: Include `ttobjs.h` temporarily.
	(VARIABLE_COLRV1_ENABLED): New temporary macro to detect whether variable
	COLRv1 is enabled.
	(Colr): New fields `var_store` and `delta_set_idx_map`.
	(tt_face_load_colr, tt_face_free_colr) [VARIABLE_COLRV1_ENABLED]: Load and
	free variation store data using the functions from the Multiple Masters
	service.

2022-07-03  Chris Liddell  <chris.liddell@artifex.com>

	[base] Improve error handling in `FT_GlyphLoader_CheckPoints`.

	If `FT_GlyphLoader_CreateExtra` returns an error (and a couple of other
	places), `FT_GlyphLoader_CheckPoints` would propagate the error immediately,
	rather than cleaning up the partially set up `FT_GlyphLoader`.  As a
	consequence, a subsequent attempt to create a glyph could result in a crash.

	* src/base/ftgloadr.c (FT_GlyphLoader_CheckPoints): Ensure all the error
	conditions exits are consistent, eventually calling `FT_GlyphLoader_Reset`.

2022-07-03  Thomas Sondergaard  <thomas@sondergaard.cc>

	CMakeLists.txt: Provide both 'freetype' and 'Freetype::Freetype' targets.

	FreeType can be located by consuming projects that use
	`find_package(Freetype)` either via the old `MODULE` path (which uses
	`FindFreetype.cmake` supplied by CMake), or via the new `CONFIG` path (which
	uses `freetype-config.cmake` as supplied by this project).  Up to this point
	the CMake module has supplied the target `Freetype::Freetype` and the config
	file provided by this project the target `freetype`.  Now we supply both
	`freetype` and `Freetype::Freetype` so that consuming projects can always
	use the target `Freetype::Freetype` regardless of what path was taken by
	`find_package(Freetype)`.

	Fixes #1165.

2022-07-02  Werner Lemberg  <wl@gnu.org>

	include/freetype/ftmm.h: Improve documentation.

2022-07-01  Dominik Röttsches  <drott@chromium.org>

	[base] Round values in `FT_MulAdd_Fix`.

	This avoids regressing Blink layout tests and makes `FT_MulAdd_Fix` delta
	retrieval implementation consistent with the previous implementation, which
	used `FT_fixedToInt` and included rounding.

	* src/base/ftcalc.c (FT_MulAdd_Fix): Implement it.
	Also fix remaining `temp` initialization compilation issue.

	Fixes #1169.

2022-07-01  Werner Lemberg  <wl@gnu.org>

	Minor formatting.

2022-06-30  Dominik Röttsches  <drott@chromium.org>

	Fix initialisation of temp variable in new FT_MulAddFix

	src/truetype/ttgxvar.c (FT_MulAddFix): Initialise `temp`.

2022-06-29  Dominik Röttsches  <drott@chromium.org>

	[truetype] Perform variation store delta computation with 64-bit precision.

	* include/freetype/internal/ftmmtypes.h (FT_ItemVarDelta): Make type
	explicitly 32-bit.
	* include/freetype/internal/services/svmm.h
	(FT_Var_Get_Item_Delta_Func): Change return type to `FT_ItemVarDelta`
	* truetype/ttgxvar.h (tt_var_get_item_delta): Change return type to
	`FT_ItemVarDelta`.
	* truetype/ttgxvar.c (tt_var_get_item_delta): Store scalars and deltas
	to intermediate array, perform computation using new method
	`FT_MulAddFix`.

2022-06-29  Dominik Röttsches  <drott@chromium.org>

	New function `FT_MulAddFix` to compute the sum of fixed-point products.

	This function, based on the code of `FT_MulFix`, uses 64-bit precision
	internally for intermediate computations.

	* include/freetype/internal/ftcalc.h, base/ftcalc.c (FT_MulAddFix):
	Implement it.

2022-06-22  Werner Lemberg  <wl@gnu.org>

	CMakeLists.txt: Move inclusion of `FindPkgConfig` down.

	It must come after `CMAKE_TOOLCHAIN_FILE`.

	Fixes #1167.

2022-06-22  Dominik Röttsches  <drott@chromium.org>

	[sfnt] Upgrade stop_offset to FT_Fixed from FT_F2Dot14

2022-06-21  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* docs/CHANGES: Announce impending Infinality removal.

2022-06-21  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* ttgload.c (TT_Process_Composite_Glyph): Fix a signedness warning.

2022-06-21  Werner Lemberg  <wl@gnu.org>

	s/fixed point/fixed-point/

2022-06-21  Werner Lemberg  <wl@gnu.org>

	.gitlab-ci.yml: Correctly upgrade `meson`.

2022-06-21  Dominik Röttsches  <drott@chromium.org>

	Proposal: Feature control for variable COLRv1

	* include/freetype/ftdriver.h (variable-color-v1 property): Add documentation
	for variable-colr-v1 property.
	* src/truetype/ttdriver.c (tt_property_set): Ingest variable-control property
	when called, set to enable_variable_colrv1 driver flag.
	* src/truetype/ttobjs.h (TT_DriverRec): Add enable_variable_colrv1 flag.

2022-06-21  Xavier Claessens  <xavier.claessens@collabora.com>

	[meson] Disable FreeType in HarfBuzz fallback.

	This avoids cyclic subproject configuration when the 'harfbuzz' feature is
	enabled, or `--wrap-mode=forcefallback` is used, but HarfBuzz is built as a
	subproject.  HarfBuzz does the same and disables HarfBuzz support when
	configuring FreeType as a subproject.

	* meson.build (harfbuzz_dep): Implement it.

	* subprojects/harfbuzz.wrap: New file.

	* .gitlab-ci.yml [windows meson]: Use latest version of the meson 0.59
	  series, which has a necessary bug fix to make CI work.

2022-06-19  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[truetype] Clean up phantom point accounting.

	This formalizes that the phantom points appended in the outline
	do not increase its point count, nor are they tagged or included
	in any additional contours.  Only their coordinates are stored.
	They are counted in the glyph zone, however.

	* src/truetype/ttgxvar.c (TT_Vary_Apply_Glyph_Deltas): Infer `n_points`
	from the outline size plus four phantom points.
	* src/truetype/ttgxvar.h (TT_Vary_Apply_Glyph_Deltas): Remove this
	argument.
	* src/truetype/ttgload.c (tt_prepare_zone): Add phantom four.
	(TT_Process_Simple_Glyph, load_truetype_glyph): Update all callers.

2022-06-19  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[truetype/GX] Clean up phantom point adjustment.

	This moves phantom point and advance variation adjustment next to
	calculations. The logic stays the same, HVAR and VVAR take priority.

	* src/truetype/ttgload.c (load_truetype_glyph): Move it from here...
	* src/truetype/ttgxvar.c (TT_Vary_Apply_Glyph_Deltas): ... to here
	and check for HVAR and VVAR presence outside the main loop.

2022-06-18  Ben Wagner  <bungeman@chromium.org>

	[stream] Fix reading s32 when long is s64

	`FT_READ_LONG`, `FT_GET_LONG`, and related macros did not return
	negative values when `long` is more than 32 bits. `FT_Stream_ReadULong`
	would read four bytes into the LSB of an `FT_ULong` and return that.
	Since this can never set the MSb of the `FT_ULong` when `FT_ULong` is
	more than 32 bits the cast to `FT_Long` never resulted in a negative
	value.

	Fix this by modifying `FT_Stream_Read*` to return a type of the same
	size as the bytes it is reading and changing the `FT_READ_*` and
	`FT_GET_*` macros to cast to the same type returned by `FT_Stream_Read*`
	but with the correctly signed type (instead of casting to what is
	assumed to be the type of `var` which will happen automatically anyway).

	There exist a few cases like with the `OFF3` variants where there isn't
	generally a type with the correct size. `FT_PEEK_OFF3` works around this
	loading the bytes into the three most significant bits and then doing a
	signed shift down. `FT_NEXT_OFF3` also already worked correctly by
	casting this signed value to another signed type. `FT_Stream_GetUOffset`
	works correctly but one must be careful not to attempt to cast the
	returned value to a signed type. Fortunately there is only
	`FT_GET_UOFF3` and no `FT_GET_OFF3`.

	All of these cases are handled correctly when reading values through
	`FT_Stream_ReadFields` since it generically computes the signed value
	through an `FT_Int32`. This change is essentially doing the same for
	these macros.

	* include/freetype/internal/ftstream.h (FT_NEXT_*, FT_GET_*, FT_READ*):
	Update macros and return types to use fixed size types for fixed size
	values.

	* src/base/ftstream.c (FT_StreamGet*, FT_StreamRead*): Dito.

	Issue: #1161

2022-06-17  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[truetype/GX] Fix an old typo.

	* src/truetype/ttgxvar.c (TT_Vary_Apply_Glyph_Deltas): Vertical
	advance is measured along y-coordinate.

2022-06-16  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[truetype/GX] Clean up advance adjustment (Brrr).
	
	* src/truetype/ttgload.c (load_truetype_glyph): Remove remaining code.

2022-06-16  Ben Wagner  <bungeman@chromium.org>

	[type1] Directly search for eexec in private dict

	This code originally just searched for `eexec`. This was later modified
	to check that the `eexec` found is valid (not in a string or comment).
	This was done by searching for `eexec` as before and then, for each
	`eexec` found, searching from the beginning using the correct parsing to
	see if the `eexec` was still found. If the private dictionary is large
	and contains many copies of `eexec` which are not valid, the initial
	part of the private dictionary is scanned once for each, potentially
	leading to n^2 parsing time.

	Instead of finding an initial `eexec` and then re-parsing to discover if
	it is valid, drop the initial search for `eexec` and just parse to find
	a valid `eexec`. This is strictly faster since the validation must
	happen anyway and avoids restarting from the beginning each time an
	`eexec` is found in the data.

	* src/type1/t1parse.c (T1_Get_Private_Dict): avoid n^2 parsing

	Bug: https://bugs.chromium.org/p/chromium/issues/detail?id=1328883

2022-06-16  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[truetype/GX] Clean up advance adjustment.

	* src/truetype/ttgload.c (TT_Process_Simple_Glyph, load_truetype_glyph):
	Move the advance adjustment from here...
	* src/truetype/ttgxvar.c (TT_Vary_Apply_Glyph_Deltas): ... to here and
	simplify arguments.
	* src/truetype/ttgxvar.h (TT_Vary_Apply_Glyph_Deltas): Update prototype
	with fewer arguments.

2022-06-14  Ben Wagner  <bungeman@chromium.org>

	[gzip] Handle inflate returning Z_NEED_DICT

	When `inflate` returns `Z_NEED_DICT` this is currently not reported as
	an error and callers may assume that the decompression succeeded when it
	did not. In particular, a compressed table in a woff file may not
	actually be decompressed and written as expected, leaving the backing
	memory for the expanded table uninitialized.

	* src/gzlip/ftgzip.c (FT_Gzip_Uncompress): treat `Z_NEED_DICT` as
	indicating invalid data since there is no means to provide a dictionary.

	Bug: https://bugs.chromium.org/p/chromium/issues/detail?id=1335712

2022-06-13  Ben Wagner  <bungeman@chromium.org>

	[woff] Don't allocate table entries until needed

	* src/sfnt/sfwoff.c (woff_open_font): delay allocating space for the
	table entries until they are actually written out with the data.

2022-06-12  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* src/sfnt/sfwoff2.c (woff2_open_font): Partial revert.

	Fixes https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=47981.

2022-06-12  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* src/lzw/ftzopen.c (ft_lzwstate_stack_grow): Cosmetic macro change.

2022-06-11  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[woff, woff2] Avoid buffer zeroing.

	* src/sfnt/sfwoff.c (woff_open_font): Use Q-macros.
	* src/sfnt/sfwoff2.c: Ditto.
	(reconstruct_font): Allocate table_entry on stack.

2022-06-10  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[smooth] Fix GCC LTO crashes on Windows.

	Fixes #1164 by using a volatile variable around `setjmp`.  It is hard to
	say how this fixes crashes related to certain link-time optimizations.
	This does not decrease the rendering performance.

	* src/smooth/ftgrays.c (gray_convert_glyph_inner): Use volatile `error`.

2022-06-09  bruvzg  <@bruvzg>

	* src/smooth/ftgrays.c [FT_STATIC_RASTER]: Fix compilation.

2022-06-06  Ben Wagner  <bungeman@chromium.org>

	[svg] Set linear advances when loading SVG glyphs

	* include/freetype/freetype.h (FT_GlyphSlotRec_): update doc
	* src/cff/cffgload.c (cff_slot_load): do it
	* src/truetype/ttgload.c (TT_Load_Glyph): do it

	Fixes: #1156

2022-06-01  Ben Wagner  <bungeman@chromium.org>

	[svg] Clear correct flags for doc ownership

	This issue was discovered with an SVG based font with some documents
	compressed and other uncompressed. After loading the first compressed
	document the ownership flag on the glyph slot was set to true but never
	set to false. As a result after loading a compressed document a glyph
	from an uncompressed document would load fine, but when this glyph slot
	was cleared it would try to free its document resulting in a wild free.

	* src/base/ftobjs.c (ft_glyphslot_clear): clear correct flags

	Fixes: #1162

2022-06-01  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[docs] Correct favicon.

2022-06-01  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[docs] Use hinted favicon.

2022-05-27  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[docs] Update favicon.

2022-05-25  Behdad Esfahbod (بهداد اسفهبد)  <behdad@behdad.org>

	* src/sfnt/ttmtx.c (tt_face_get_metrics): Apply variations unconditionally.

	This causes a speed-up of approx. 20% for getting advance widths.

2022-05-23  Dominik Röttsches  <drott@chromium.org>

	[truetype] Support reading 32bit/16bit VarStore deltas

	* include/freetype/internal/ftmmtypes.h (FT_ItemVarDelta): Define type
	to be used for delta arrays, upgrade to FT_long.
	* src/truetype/ttgxvar.c: Adhere to long_words bit and read either
	Short/Byte pairs or Long/Short pairs, as defined by spec. For better
	readability, define macro for repetitive read code.

2022-05-20  Dominik Röttsches  <drott@chromium.org>

	[truetype] Handle 0xFFFF special value inside delta retrieval function

	* truetype/ttgxvar.c (tt_hvadvance_adjust, tt_apply_mvar,
	tt_var_get_item_delta): Remove special 0xFFFF handling in favor of less
	redundant handling inside the tt_var_get_item_delta function, as it is
	equivalent to returning a 0 delta. Avoids code-duplication checking for
	special value 0xFFFF.

2022-05-19  Dominik Röttsches  <drott@chromium.org>

	[truetype, snft] Add service methods for `DeltaSetIdxMap` and `VarStore`.

	This will be needed for 'COLR' v1 variation support.

	* src/truetype/ttgxvar.h (GX_ItemVarData, GX_AxisCoords, GX_VarRegion,
	GX_VarItemStore, GX_DeltaSetIdxMap): Move structures to...
	* include/freetype/internal/ftmmtypes.h: ... this new file.

	* include/freetype/internal/service/svmm.h (MultiMasters): Include
	`ftmmtypes.h`.
	(FT_Var_Load_Delta_Set_Idx_Map_Func, FT_Var_Load_Item_Var_Store_Func,
	FT_Var_Get_Item_Delta_Func, FT_Var_Done_Item_Var_Store_Func,
	FT_Var_Done_Delta_Set_Idx_Map_Func): New function typedefs.
	(MultiMasters): Add them.
	(FT_DEFINE_SERVICE_MULTIMASTERSREC): Updated.

	* src/cff/cffdrivr.c (cff_load_item_variation_store,
	cff_load_delta_set_index_mapping, cff_get_item_delta,
	cff_done_item_variation_store, cff_done_delta_set_index_map): New wrapper
	methods calling into mm service.
	(cff_service_multi_masters): Updated.

	* src/truetype/ttgxvar.c (ft_var_load_item_variation_store,
	ft_var_load_delta_set_index_mapping, ft_var_get_item_delta,
	ft_var_done_item_variation_store, ft_var_done_delta_set_index_map): Renamed
	to ...
	(tt_var_load_item_variation_store, tt_var_load_delta_set_index_mapping,
	tt_var_get_item_delta, tt_var_done_item_variation_store,
	tt_var_done_delta_set_index_map): ... this for consistency.
	Mark them as non-static.
	* src/truetype/ttgxvar.h: Add corresponding prototypes.

	* src/truetype/ttdriver.c (tt_service_gx_multi_masters): Updated.

	* src/type1/t1driver.c (t1_service_multi_masters): Updated.

2022-05-19  Dominik Röttsches  <drott@chromium.org>

	[truetype] Move deallocation of `DeltaSetIdxMap` into own function.

	This is a preparation for handling `DeltaSetIdxMap` and `VarStore` as a
	FreeType service.

	* src/truetype/ttgxvar.c (ft_var_done_delta_set_index_map): New function.
	(tt_done_blend): Use it.

2022-05-18  Werner Lemberg  <wl@gnu.org>

	* builds/toplevel.mk (do-dist): Don't remove meson wrap files.

	Fixes #1157.

2022-05-18  Werner Lemberg  <wl@gnu.org>

	* subprojects/zlib.wrap: Update to zlib version 1.2.12.

2022-05-18  Werner Lemberg  <wl@gnu.org>

	REAMDE: Mention that gitlab's 'download' button doesn't work.

	This is because the `git archive` command doesn't preserve submodules.

	Note that currently there is no support for disabling the 'download' button
	in gitlab (https://gitlab.com/gitlab-org/gitlab/-/issues/17032).

	Fixes issue #1158.

2022-05-11  Werner Lemberg  <wl@gnu.org>

	[truetype] Handle inner/outer index values 0xFFFF/0xFFFF.

	This was introduced in OpenType 1.8.4.

	* src/truetype/ttgxvar.c (ft_var_load_delta_set_index_mapping,
	tt_hvadvance_adjust, ft_var_load_mvar, tt_apply_mvar): Handle special
	inner/outer index values.
	(ft_var_load_item_variation_store): Add test.

	Fixes #1154.

2022-05-01  Werner Lemberg  <wl@gnu.org>

	* Version 2.12.1 released.
	==========================

	Tag sources with `VER-2-12-1'.

	* docs/VERSION.TXT: Add entry for version 2.12.1.
	* docs/CHANGES, docs/release: Updated.

	* README, src/base/ftver.rc, builds/windows/vc2010/index.html,
	builds/windows/visualc/index.html, builds/windows/visualce/index.html,
	builds/wince/vc2005-ce/index.html, builds/wince/vc2008-ce/index.html,
	docs/freetype-config.1: s/2.12.0/2.12.1/, s/2120/2121/.

	* include/freetype/freetype.h (FREETYPE_PATCH): Set to 1.

	* builds/unix/configure.raw (version_info): Set to 24:3:18.
	* CMakeLists.txt (VERSION_PATCH): Set to 1.

2022-04-30  Anuj Verma  <anuj@posteo.net>

	[sdf] Do not throw errors for invisible glyphs.

	* src/sdf/ftsdfrend.c (ft_sdf_render, ft_bsdf_render): Return `FT_Err_Ok` if
	width or height is zero, since some glyphs do not generate visible bitmaps.

	Fixes #1150.

2022-04-30  Werner Lemberg  <wl@gnu.org>

	* src/sfnt/sfobjs.c (sfnt_load_face): Set `FT_FACE_FLAG_COLOR` for SVG fonts.

	Fixes #1151.

2022-04-27  Brendan Shanks  <bshanks@codeweavers.com>

	autogen.sh: Fix building when freetype is itself a git submodule.

	There are situations where .git is not a directory, like when
	freetype is a submodule in another repository.

2022-04-26  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[builds/windows] Simplify non-desktop UWP check.

	Fixes mingw compilation described in !159.

	* builds/windows/ftsystem.c: Do not use WINAPI_FAMILY_PARTITION macro.

2022-04-25  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[truetype] Reset IUP flags in `TT_RunIns`.

	Fixes #1148 by moving the flag initialization back, partly reverting
	7809007a and fd03dcc1.  Initializing these flags elsewhere skips 'cvt'.

	* src/truetype/ttinterp.c (TT_RunIns): Initialize the IUP flag here...
	(TT_Run_Context): ... instead of here.

2022-04-24  Xavier Claessens  <xavier.claessens@collabora.com>

	[meson] Remove `default_library=both` from `default_options`.

	It is inconsistent with what all other Meson projects do.

	It also prevents static linking to FreeType when it is a subproject because
	`default_options` in a subproject takes precedence on values set on the main
	project.  For example, building 'GStreamer' with `-Ddefault_library=static`
	would still dynamically link on FreeType unless the user also sets
	`-Dfreetype2:default_library=static`.

	* meson.build: Updated.

	* .gitlab-ci.yml: Retain `both` option for testing.

2022-04-19  Werner Lemberg  <wl@gnu.org>

	* src/truetype/ttgload.c (TT_Process_Simple_Glyph): Integer overflow.

	Reported as

	  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=46792

2022-04-16  Georg Brandl  <georg@python.org>

	* src/cff/cffgload.c (cff_slot_load) [FT_CONFIG_OPTION_SVG]: Fix segfault.

	This can happen if the function is called with `size` being `NULL`.

	Fixes #1147.

2022-04-14  Steve Lhomme  <robux4@ycbcr.xyz>

	.gitlab-ci.yml: Add a Universal Windows build target

	It's compiled for Windows 10 and up, ensuring UNICODE is set (default for UWP)
	and selecting the proper WINAPI_FAMILY (WINAPI_FAMILY_APP).

	Do not try to run the UWP exe in the Docker as it doesn't work.

2022-04-04  Ben Wagner  <bungeman@chromium.org>

	[sfnt] Correct FT_ColorStopIterator documentation.

	* include/freetype/ftcolor.h (FT_ColorStopIterator): the user should not
	 set `p` to NULL before calling `FT_Get_Colorline_Stops`. `p` and
	`num_color_stops` are set by `FT_Get_Paint`. `p` and
	`current_color_stop` are updated by `FT_Get_Colorline_Stops`.

2022-04-01  Werner Lemberg  <wl@gnu.org>

	* builds/unix/configure.raw: Add option `--with-librsvg`.

	Since 'librsvg' is written in Rust, this option allows distributions to
	avoid a dependency on the entire Rust toolchain to provide the FreeType demo
	programs.

	Suggested by Lars Wendler in !156.

2022-04-01  Werner Lemberg  <wl@gnu.org>

	* src/sfnt/sfwoff.c (reconstruct_glyf): Fix gcc 10 warning.

2022-04-01  Werner Lemberg  <wl@gnu.org>

	[gzip] Update sources to zlib 1.2.12.

2022-04-01  Eric Jing  <@CPUcontrol>

	CMakeLists.txt: Fix `Info.plist` path.

	When building a framework using CMake with `add_subdirectory`, CMake must be
	able to find `freetype-Info.plist` when configuring the framework
	properties.

	Fixes #1145.

2022-04-01  Werner Lemberg  <wl@gnu.org>

	Whitespace.

2022-04-01  Ben Wagner  <bungeman@chromium.org>

	[truetype] Use SUB_LONG for component offset.

	* src/truetype/ttgload.c (TT_Process_Composite_Component): do it.

	Bug: https://crbug.com/1309429

2022-03-31  Werner Lemberg  <wl@gnu.org>

	CMakeList.txt: Update code to handle recent changes for `freetype.pc`.

	Fixes #1144.

2022-03-31  Werner Lemberg  <wl@gnu.org>

	CMakeLists.txt: s/PKG_CONFIG/PKGCONFIG/, s/REQUIRED_/REQUIRES_/.

2022-03-31  Werner Lemberg  <wl@gnu.org>

	* Version 2.12.0 released.
	==========================

	Tag sources with `VER-2-12-0'.

	* docs/VERSION.TXT: Add entry for version 2.12.0.
	* docs/CHANGES, docs/release: Updated.

	* README, src/base/ftver.rc, builds/windows/vc2010/index.html,
	builds/windows/visualc/index.html, builds/windows/visualce/index.html,
	builds/wince/vc2005-ce/index.html, builds/wince/vc2008-ce/index.html,
	docs/freetype-config.1: s/2.11.1/2.12.0/, s/2111/2120/.

	* include/freetype/freetype.h (FREETYPE_MINOR): Set to 12.
	(FREETYPE_PATCH): Set to 0.

	* builds/unix/configure.raw (version_info): Set to 24:2:18.
	* CMakeLists.txt (VERSION_MINOR): Set to 12.
	(VERSION_PATCH): Set to 0.

	* builds/toplevel.mk (do-dist): Generate `ChangeLog` entries for all commits
	since version 2.11.0 (when we stopped creating this file manually).

2022-03-31  Werner Lemberg  <wl@gnu.org>

	Fix clang++ warnings.

	* src/base/ftglyph.c (ft_svg_glyph_prepare), src/base/ftobj.c
	(ft_glyphslot_init), src/cache/ftccmap.c (ftc_cmap_node_new),
	src/cache/ftcimage.c (FTC_INode_New), src/lzw/ftlzw.c (FT_Stream_OpenLZW),
	src/psaux/psobjs.c (ps_parser_load_field), src/pshinter/pshglob.c
	(psh_globals_new), src/sfnt/ttsvg.c (tt_face_load_svg_doc): Initialize
	variables used for allocation.

	* src/sdf/ftsdf.c (split_sdf_conic, split_sdf_cubic): Change type of
	`max_splits` to FT_UInt.
	(sdf_generate_bounding_box): Add cast.

2022-03-30  Werner Lemberg  <wl@gnu.org>

	Whitespace.

2022-03-30  Werner Lemberg  <wl@gnu.org>

	[builds] Fix creation of `freetype2.pc` for static-only builds.

	We have to help `pkg-config` since it can't recognize that there is no
	shared library installed.

	Note that meson already does exactly the same.

	* builds/unix/configure.raw (REQUIRES_PRIVATE, LIBS_PRIVATE): Rename to...
	(PKGCONFIG_REQUIRES_PRIVATE, PKGCONFIG_LIBS_PRIVATE): This.  Adjust them
	depending on `$enable_shared`.
	(PKGCONFIG_REQUIRES, PKGCONFIG_LIBS): New variables.

	* builds/unix/freetype2.in, builds/unix/unix-def.in: Use new and updated
	variables.

2022-03-25  Werner Lemberg  <wl@gnu.org>

	Add `FT_FACE_FLAG_SBIX_OVERLAY` and `FT_HAS_SBIX_OVERLAY`.

	* include/freetype/freetype.h (FT_FACE_FLAG_SBIX_OVERLAY,
	FT_HAS_SBIX_OVERLAY): New macro.

	* src/sfnt/ttsbit.c (tt_face_load_sbit): Handle `FT_FACE_FLAG_SBIX_OVERLAY`.
	Remove obsolete tracing message.

2022-03-25  Werner Lemberg  <wl@gnu.org>

	Add `FT_PARAM_TAG_IGNORE_SBIX`.

	This is another bit to handle 'sbix' tables as described in the OpenType
	specification.

	* include/freetype/ftparams.h (FT_PARAM_TAG_IGNORE_SBIX): New macro.

	* src/sfnt/sfobjc.c (is_apple_sbix): Rename to...
	(has_sbix): ... this.
	Check for more sbit tables.
	Handle `FT_PARAM_TAG_IGNORE_SBIX` to eventually control `has_sbix`.
	Only call sbit table loader if an sbit table is present.

2022-03-25  Werner Lemberg  <wl@gnu.org>

	[truetype] Fix 'sbix' table handling.

	* src/sfnt/ttsbit.c (tt_face_load_sbix_image): Correct calculation of
	'metrics->horiBearingY'.
	Set vertical metrics.

	* src/sfnt/sfobjs.c (sfnt_load_face): Adjust setting of `FT_FACE_FLAG_SBIX`.
	Handle metrics of fonts with 'sbix' table.

	* src/truetype/ttgload.c (TT_Load_Glyph): For 'sbix' embedded bitmaps, apply
	bbox offset and bearing values of the corresponding glyph in the 'glyf'
	table if it exists and has a contour.

	* src/truetype/ttobjs.c (tt_face_init): Handle font with 'sbix' table.

	Fixes issue #998.

2022-03-25  Werner Lemberg  <wl@gnu.org>

	Add `FT_FACE_FLAG_SBIX` and `FT_HAS_SBIX`.

	Fonts with 'sbix' tables need special handling by the application.

	* include/freetype/freetype.h (FT_FACE_FLAG_SBIX, FT_HAS_SBIX): New macros.

	* src/sfnt/sfobjs.c (sfnt_load_face): Set `FT_FACE_FLAG_SBIX` if 'sbix'
	table is present.

2022-03-25  Werner Lemberg  <wl@gnu.org>

	* include/freetype/freetype.h (FT_LOAD_SBITS_ONLY): Tag macro as public.

2022-03-24  Carlo Bramini  <carlo.bramix@libero.it>

	[builds/windows] Fix WCE support.

	* builds/windows/ftsystem.c [_WIN32_WCE]: Include <malloc.h> needed by
	_alloca.

2022-03-24  Steve Lhomme  <robux4@ycbcr.xyz>

	[build/windows] Improve UWP support.

	* builds/windows/ftsystem.c [UWP]: Wrap CreateFile2 into CreateFileA.

2022-03-21  Werner Lemberg  <wl@gnu.org>

	* src/sfnt/ttkern.c (tt_face_get_kerning): Exit early if no table.

	Fixes #1141.

2022-03-20  Ben Wagner  <bungeman@chromium.org>

	[woff2] Support overlap flag for simple glyphs.

	In the woff2 spec it has been proposed to allow the OVERLAP_SIMPLE flag
	to be retained through the woff2 format [0].

	[0] https://www.w3.org/TR/WOFF2/#glyf_table_format

	* src/sfnt/sfwoff2.h (GLYF_OVERLAP_SIMPLE): add glyf flag.

	* src/sfnt/sfwoff2.c (reconstruct_glyf): parse optionFlags and
	overlapSimpleBitmap[]. (store_points): set OVERLAP_SIMPLE on first point's
	flag if the overlap bit is set.

2022-03-19  Werner Lemberg  <wl@gnu.org>

	[cff] Synchronize `cff_slot_load` with `TT_Load_Glyph`.

	* src/cff/cffgload.c (IS_DEFAULT_INSTANCE): New macro.
	(cff_slot_load): Use it.

2022-03-19  Werner Lemberg  <wl@gnu.org>

	* src/base/ftobjs.c (FT_Request_Size): Guard `face->size`.

	Fixes #1140.

2022-03-19  Werner Lemberg  <wl@gnu.org>

	* src/base/ftobjs.c (ft_open_face_internal): Thinko.

2022-03-19  Ben Wagner  <bungeman@chromium.org>

	[doc] FT_OUTLINE_OVERLAP was introduced in 2.10.3.

	* include/freetype/ftimage.h (FT_OUTLINE_OVERLAP): Document when added.

2022-03-19  Werner Lemberg  <wl@gnu.org>

	* src/base/ftobjs.c (ft_open_face_internal): Properly guard `face_index`.

	We must ensure that the cast to `FT_Int` doesn't change the sign.

	Fixes #1139.

2022-03-17  Werner Lemberg  <wl@gnu.org>

	[sfnt] Avoid invalid face index.

	Fixes #1138.

	* src/sfnt/sfobjs.c (sfnt_init_face), src/sfnt/sfwoff2.c (woff2_open_font):
	Check `face_index` before decrementing.

2022-03-07  Werner Lemberg  <wl@gnu.org>

	Documentation, whitespace.

2022-03-05  Anuj Verma  <anuj@womp.xyz>

	[sdf] Fix corner checks and improve performance.

	* src/sdf/ftsdf.c (sdf_generate_bounding_box): Always check for a corner if
	two distances (for different curves) are very close.

	(sdf_conic_to): Check whether the conic curve can be treated as a line
	(which happens if the control point coincides with any end point).

2022-03-05  Anuj Verma  <anuj@womp.xyz>

	[sdf] Implement deviation-based splitting for Bezier curves.

	* src/sdf/ftsdf.c (split_sdf_cubic, split_sdf_shape): Add checks to figure
	out the deviation of Bezier curves and stop splitting if the curve is flat
	enough.

	* src/sdf/ftsdfcommon.h (ONE_PIXEL): New macro.

2022-03-05  Anuj Verma  <anuj@womp.xyz>

	* include/freetype/freetype.h: Improve SDF documentation.

2022-03-03  Ben Wagner  <bungeman@chromium.org>

	[sfnt] Fix bounds check in SVG.

	The `SVG_DOCUMENT_LIST_MINIMUM_SIZE` macro is non trivial and not
	protected by parentheses. As a result, the expression
	`table_size - SVG_DOCUMENT_LIST_MINIMUM_SIZE` expands to
	`table_size - 2U + SVG_DOCUMENT_RECORD_SIZE` instead of the expected
	`table_size - (2U + SVG_DOCUMENT_RECORD_SIZE)`. This causes an incorrect
	bounds check which may lead to reading past the end of the `SVG ` table.

	* src/sfnt/ttsvg.c (tt_face_load_svg): wrap macro definitions in
	parentheses.

	Bug: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=45179

2022-02-23  Ben Wagner  <bungeman@chromium.org>

	[psaux] Full bounds check for OtherSubr 19.

	It is possible for OtherSubr 19 to be invoked when `decoder->buildchar` is
	NULL (so that `decoder->len_buildchar` is 0), the `blend` is non-NULL with
	`blend->num_designs` set to 2, and the user supplied `idx` to be large (for
	example 0xFFFFFFFE).  Since these are all `FT_UInt32` the existing bounds
	check overflows in a well defined manner, allowing for an invalid call to
	`memcpy`.

	In addition, it is possible to call OtherSubr 19 with
	`decoder->len_buildchar`, `blend->num_designs`, and `idx` all zero (implying
	that `blend->weight_vector` and `decoder->buildchar` are NULL).  This passes
	the bounds check (it is logically always fine to copy nothing starting at
	index zero) but may invoke undefined behavior in `ft_memcpy` if it is backed
	by `memcpy`.  Calling `memcpy` with either the `src` or `dst` NULL is
	undefined behavior (even if `count` is zero).

	* src/psaux/psintrp.c (cf2_interpT2CharString): Correctly check that
	`blend->num_designs` can be copied to `decoder->buildchar[idx]`.
	Also avoid passing NULL to `ft_memcpy`.

	Bug: https://crbug.com/1299259

2022-02-21  suzuki toshiya  <mpsuzuki@hiroshima-u.ac.jp>

	[cmake] Drop the support of CMake 2.x.

	* CMakeLists.txt: Require CMake 3.0 (released on 2014) or newer.

	The issue #1059 reports the difficulty to support both of
	CMake 2.x and newer one by single CMakeLists.txt without
	the inflation of cmake_policy() workarounds.

	For better maintainability, the support of CMake 2.x is
	dropped.

2022-02-19  Werner Lemberg  <wl@gnu.org>

	* src/bdf/README: Updated.

2022-02-19  Werner Lemberg  <wl@gnu.org>

	* builds/mac/ftmac.c, src/base/ftmac.c: s|FT_MAC_H|<freetype/ftmac.h>|.

2022-02-19  Werner Lemberg  <wl@gnu.org>

	src/sfnt/ttkern.c (tt_face_load_kern): Micro-optimize.

	A kerning table can be handled by binary search if it has equal entries.

	Fixes #1132.

2022-02-17  Steve Lhomme  <robux4@ycbcr.xyz>
	    Alexei Podtelezhnikov  <apodtele@gmail.com>

	[builds/windows] Add support for legacy UWP builds.

	* builds/windows/ftsystem.c: Add neccessary macro substitutions to
	enable strict UWP builds.

	See !141.

2022-02-16  Werner Lemberg  <wl@gnu.org>

	ftmm.h: Minor documentation improvement.

2022-02-13  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[pshinter] Tune PSH_STRONG_THRESHOLD_MAXIMUM value.

	Before the change, the hinting engine frequently confused horizontal
	stem and serif hints making some stems too thin and some serifs too
	thick. The value was tuned using serif fonts from the URW+ base 35
	collection.

	* src/pshinter/pshalgo.c [PSH_STRONG_THRESHOLD_MAXIMUM]: s/30/12/.

2022-02-12  Werner Lemberg  <wl@gnu.org>

	t1tables.h: Documentation improvements.

2022-02-12  Werner Lemberg  <wl@gnu.org>

	t1tables.h: Whitespace.

2022-02-11  Werner Lemberg  <wl@gnu.org>

	[type42] Fix `FT_Get_PS_Font_Private` for this format.

	Since Type42 fonts don't have a 'Private' dictionary, the return value
	should be `FT_Err_Invalid_Argument`.

	* src/type42/t42drivr.c (t42_ps_get_font_private): Removed.
	(t42_service_ps_info): Updated.

2022-02-09  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[pshinter] Clear reused mask.
	
	In PS hinter, memory allocations persist until the module is done.
	Therefore, we have to clear reused masks.
	
	* src/pshinter/pshrec.c (ps_mask_table_alloc): Clear reused mask.

2022-02-09  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[pshinter] Use unsigned indices.
	
	This reduces casting and eliminates some checks.
	
	* src/pshinter/pshrec.c (ps_mask_test_bit, ps_mask_table_merge,
	ps_dimension_add_t1stem, ps_hints_t1stem3): Updated.
	(ps_dimension_add_counter): Updated, unnecessary checks removed.

2022-02-08  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[pshinter] Fix mask merging.

	We forgot to update the number of bits when merging a larger mask
	into a smaller one.  This fix might have rendering effects.

	* src/pshinter/pshrec.c (ps_mask_table_merge): Inherit the number
	of bits from a larger mask. There is no need to zero unused bits,
	already zeroed during allocation.
	(ps_mask_clear_bit): Removed.
	(ps_mask_ensure): Minor.

2022-02-08  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[pshinter] Revise the hint table handling.
	
	* src/pshinter/pshrec.c (ps_hint_table_ensure): Remove redundant size
	check; avoid array zeroing because it is fully initialized when used.
	(ps_hint_table_alloc): Fix off-by-one comparison and remove another
	zeroing of the array elements.

2022-02-06  Werner Lemberg  <wl@gnu.org>

	Various minor doc fixes.

2022-02-06  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[builds/windows] Add SVG to to project files.

	* builds/windows/vc2010/freetype.vcxproj: Updated.
	* builds/windows/vc2010/freetype.vcxproj.filters: Updated.
	* builds/windows/visualc/freetype.vcproj: Updated.

2022-02-03  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* src/winfonts/winfnt.c (fnt_face_get_dll_font): Trace font resources.

2022-02-02  Eric Jing  <@CPUcontrol>

	[cmake] Fix build on MacOS.

	* CMakeLists.txt (CMAKE_OSX_ARCHITECTURES): Update value to fix the building
	of a framework on MacOS.

	* builds/mac/freetype-Info.plist (CFBundleExecutable): Make identifier
	lowercase only.

	Fixes #1127.

2022-02-02  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[psaux] Revise `PS_Table` handling.

	The old impleemntation was not using `FT_REALLOC`, buing too careful
	with the offset rebasing.  It shoudl be safe to rely on the base
	movements.

	* src/psaux/psobjs.c (reallocate_t1_table, shift_elements): Combine
	into...
	(ps_table_realloc): ... this function based on `FT_REALLOC`.
	(ps_table_done): Simplified.
	(ps_table_add): Updated.

2022-02-02  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* src/cache/ftcmru.c (FTC_MruList_New): Explain zeroing.

2022-01-31  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[cache] Partially revert 9870b6c07e2c.
	
	Fix crashes reported by Werner.
	
	* src/cache/ftcmru.c (FTC_MruList_New): Use `FT_ALLOC` again.

2022-01-31  Werner Lemberg  <wl@gnu.org>

	freetype.h: Minor documentation improvement.

2022-01-31  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[cache] Fix fallouts from edd4fedc5427.

	Reported by Werner.

	* src/cache/ftcimage.c (FTC_INode_New): Always initialize FT_Glyph.
	* src/cache/ftcsbits.c (FTC_SNode_New): Always initialize FT_SBit.

2022-01-31  Alexei Podtelezhnikov  <apodtele@gmail.com>

	Clean-up - do not doubt FT_FREE.

	* src/base/ftobjs.c (memory_stream_close): Do not reassign zero
	after `FT_FREE`.
	* src/sfnt/sfwoff.c (sfnt_stream_close): Ditto.
	* src/sfnt/sfwoff2.c (stream_close): Ditto.
	* src/psaux/psobjs.c (ps_parser_load_field): Ditto.
	* src/truetype/ttgxvar.c (ft_var_load_avar, tt_set_mm_blend,
	tt_set_mm_blend): Ditto.

2022-01-30  Werner Lemberg  <wl@gnu.org>

	* CMakeLists.txt: Include 'FindPkgConfig' module.

	Older cmake versions don't provide `pkg_check_modules` by default.

	Fixes #1126.

2022-01-30  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* src/psaux/psobjs.c (ps_parser_load_field): Reduce `string` scope.

2022-01-29  suzuki toshiya  <mpsuzuki@hiroshima-u.ac.jp>

	[cmake] Check the availability of `bzip2.pc'.

	(CMakeLists.txt): Check the availability of `bzip2.pc'.

	* If `bzip2.pc' is available, Requires.private should include
	bzip2, but Libs.private should not include -lbz2.

	* If `bzip2.pc' is unavailable, Requires.private cannot include
	bzip2, but Libs.private should include -lbz2.

	Fix #897.

2022-01-28  Werner Lemberg  <wl@gnu.org>

	* unix/configure.raw: We need 'librsvg' version 2.46.0 or newer.

	Older versions don't have function `rsvg_handle_get_intrinsic_dimensions`.

2022-01-28  Alexei Podtelezhnikov  <apodtele@gmail.com>

	Minor clean-ups.

	* src/base/ftrfork.c (raccess_make_file_name): Do not set error.
	* src/sfnt/sfdriver.c (get_win_string, get_apple_string): Ditto.
	* src/cff/cffobjs.c (cff_strcpy): Do not confuse about error.
	* src/psaux/psobjs.c (ps_table_done): Ditto.
	* src/truetype/ttgxvar.c (ft_var_readpacked*, ft_var_load_avar): Ditto.

2022-01-27  Ben Wagner  <bungeman@chromium.org>

	Document `FT_Outline_Decompose` degenerate segments.

	`FT_Outline_Decompose` does not filter out and can return degenerate
	segments in an outline. This can be surprising when attemping to
	stroke such an outline. Clarify the existing documentation on this
	matter to cover all forms of degeneracy (without specifying exactly
	how they will be reported), why they might arise, and better explain in
	what cases they may be an issue.

	* include/freetype/ftoutlin.h (FT_Outline_Decompose): update
	documentation.

	Fixes #952.

2022-01-27  Anuj Verma  <anujv@posteo.net>

	Fix sdf computation while `USE_SQUARED_DISTANCES`.

	Function `map_fixed_to_sdf` expects spread to be absolute
	and not squared.

	* src/sdf/ftbsdf.c (finalize_sdf): Pass absolute spread
	while `map_fixed_to_sdf`.

	* src/sdf/ftsdf.c (sdf_generate_bounding_box): Ditto.

2022-01-27  Tapish Ojha  <tapishojha2000@gmail.com>

	[sfnt] Improve sRGB constants.

	* src/base/ftbitmap.c (ft_gray_for_premultiplied_srgb_bgra): Use slightly
	more precise values.

	Fixes #1018.

2022-01-27  Werner Lemberg  <wl@gnu.org>

	docs/release: Updated.

2022-01-26  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* src/pfr/pfrload.c (pfr_phy_font_load): Use FT_QNEW_ARRAY.

2022-01-26  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* src/sdf/ftsdf.c (sdf_*_new): Use standard macro.

2022-01-26  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[pcf] Delay encoding allocation and avoid its zeroing.

	* src/pcf/pcfread.c (pcf_get_encodings): Refactor and use FT_QNEW_ARRAY.

2022-01-25  Werner Lemberg  <wl@gnu.org>

	Aarg, typo.

2022-01-25  Werner Lemberg  <wl@gnu.org>

	freetype.h: More updates to `FT_LOAD_COLOR` description.

2022-01-25  Werner Lemberg  <wl@gnu.org>

	* builds/unix/configure.raw (FT_DEMO_CFLAGS): Pass `-DHAVE-LIBRSVG`.

	This helps in decoupling library support from `pkg-config` for other
	platforms.

2022-01-25  Werner Lemberg  <wl@gnu.org>

	Update documentation for `FT_LOAD_COLOR`.

2022-01-24  Ben Wagner  <bungeman@chromium.org>

	[pshinter] Ensure all point flags are initialized.

	Only off curve point flags were fully initialized.

	* src/pshinter/pshalgo.c (psh_glyph_init): always initialize flags.

	Fixes: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=43930

2022-01-24  Werner Lemberg  <wl@gnu.org>

	.mailmap: Typo.

2022-01-23  Werner Lemberg  <wl@gnu.org>

	* src/svg/ftsvg.c (ft_svg_property_set): Disallow NULL pointers.

2022-01-23  Werner Lemberg  <wl@gnu.org>

	.mailmap: Updated.

2022-01-23  Werner Lemberg  <wl@gnu.org>

	More documentation on handling OT-SVG.

2022-01-23  Werner Lemberg  <wl@gnu.org>

	* src/svg/ftsvg.c: Rename `svg_hooks` to `svg-hooks` for consistency.

2022-01-22  Werner Lemberg  <wl@gnu.org>

	[sfnt] Reject malformed SVG tables.

	* src/sfnt/ttsvg.c (SVG_TABLE_HEADER_SIZE, SVG_DOCUMENT_RECORD_SIZE,
	SVG_DOCUMENT_LIST_MINIMUM_SIZE, SVG_MINIMUM_SIZE): New macros.
	(tt_face_load_svg): Check offsets.
	Check table and record sizes.

	Reported as

	  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=43918

2022-01-22  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* src/psaux/psobjs.c (ps_table_new): Revert to zeroing.

2022-01-20  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[psaux, type1, type42] Avoid annecessary zeroing.

	* src/psaux/psobjs.c (ps_table_new): Use FT_QNEW_ARRAY.
	* src/type1/t1load.c (parse_encoding): Ditto.
	* src/type42/t42parse.c (t42_parse_encoding): Ditto.

2022-01-20  Werner Lemberg  <wl@gnu.org>

	[builds/unix] Handle 'librsvg' for demo programs.

	* builds/unix/configure.raw: Check for 'librsvg'.
	(LIB_CLOCK_GETTIME): Don't call `AC_SUBST` on this but on...
	(FT_DEMO_CFLAGS, FT_DEMO_LDFLAGS): ... these two new variables.

	* builds/unix/unix-cc.in (LIB_CLOCK_GETTIME): Replaced by...
	(FT_DEMO_CFLAGS, FT_DEMO_LDFLAGS): ... these two new variables.

2022-01-20  Moazin Khatti  <moazinkhatri@gmail.com>

	Add 'svg' module for OT-SVG rendering.

	* CMakeLists.txt (BASE_SRCS): Add svg module file.
	* meson.build (ft2_public_headers): Add `otsvg.h`.

	* modules.cfg (RASTER_MODULES): Add `svg` module.

	* builds/meson/parse_modules_cfg.py: Add svg module.

	* include/freetype/config/ftmodule.h: Add `ft_svg_renderer_class`.
	* include/freetype/fterrdef.h: Add `Invalid_SVG_Document` and
	`Missing_SVG_Hooks` error codes.
	* include/freetype/internal/fttrace.h: Add tracing for `otsvg`.
	* include/freetype/internal/svginterface.h: New file.  It adds an interface
	to enable the presetting hook from the `base` module.
	* include/freetype/otsvg.h (SVG_Lib_Init_Func, SVG_Lib_Free_Func,
	SVG_Lib_Render_Func, SVG_Lib_Preset_Slot_Func): New hooks for SVG rendering.
	(SVG_RendererHooks): New structure to access them.

	* src/base/ftobjs.c: Include `svginterface.h`.
	(ft_glyphslot_preset_bitmap): Add code for presetting the slot for SVG
	glyphs.
	(ft_add_renderer): Updated.

	* src/svg/*: New files.

2022-01-20  Moazin Khatti  <moazinkhatri@gmail.com>

	Add `FT_Glyph` support for OT-SVG glyphs.

	* include/freetype/ftglyph.h (FT_SvgGlyphRec, FT_SvgGlyph): New structure.

	* src/base/ftglyph.c: Include `otsvg.h`.
	(ft_svg_glyph_init, ft_svg_glyph_done, ft_svg_glyph_copy,
	ft_svg_glyph_transform, ft_svg_glyph_prepare): New function.
	(ft_svg_glyph_class): New class.
	(FT_New_Glyph, FT_Glyph_To_Bitmap): Updated to handle OT-SVG glyphs.
	* src/base/ftglyph.h: Updated.

2022-01-20  Moazin Khatti  <moazinkhatri@gmail.com>

	[truetype, cff] Add code to load SVG document.

	* src/cff/cffgload.c (cff_slot_load): Add code to load SVG doc.
	* src/truetype/ttgload.c (TT_Load_Glyph): Add code to load SVG doc.

2022-01-20  Moazin Khatti  <moazinkhatri@gmail.com>

	Add code to load OT-SVG glyph documents.

	* include/freetype/config/ftheader.h (FT_OTSVG_H): New macro.
	* include/freetype/freetype.h (FT_FACE_FLAG_SVG, FT_HAS_SVG): New macros.
	(FT_LOAD_SVG_ONLY): New internal macro.
	* include/freetype/ftimage.h (FT_Glyph_Format): New enumeration value
	`FT_GLYPH_FORMAT_SVG`.
	* include/freetype/internal/ftobjs.h (FT_GLYPH_OWN_GZIP_SVG): New macro.
	* include/freetype/internal/fttrace.h: Add `ttsvg` for `ttsvg.c`.
	* include/freetype/internal/sfnt.h(load_svg, free_svg, load_svg_doc): New
	functions.
	* include/freetype/internal/tttypes.h (TT_FaceRec): Add `svg` for
	the SVG table.
	* include/freetype/otsvg.h (FT_SVG_DocumentRec): New structure to hold the
	SVG document and other necessary information of an OT-SVG glyph in a glyph
	slot.
	* include/freetype/tttags.h (TTAG_SVG): New macro.

	* src/base/ftobjs.c: Include `otsvg.h`.
	(ft_glyphslot_init): Allocate `FT_SVG_DocumentRec` in `slot->other`
	if the SVG table exists.
	(ft_glyphslot_clear): Free it upon clean-up if it is a GZIP compressed
	glyph.
	(ft_glyphslot_done): Free the document data if it is a GZIP compressed
	glyph.
	(FT_Load_Glyph): Don't auto-hint SVG documents.

	* src/cache/ftcbasic.c (ftc_basic_family_load_glyph): Add support for
	FT_GLYPH_FORMAT_SVG.

	* src/sfnt/rules.mk (SFNT_DRV_SRC): Add `ttsvg.c`.
	* src/sfnt/sfdriver.c: Include `ttsvg.h`.
	(sfnt_interface): Add `tt_face_load_svg`, `tt_face_free_svg` and
	`tt_face_load_svg_doc`.
	* src/sfnt/sfnt.c: Include `ttsvg.c`.
	* src/sfnt/sfobjs.c (sfnt_load_face, sfnt_done_face): Add code to load and
	free data of the the SVG table.
	* src/sfnt/ttsvg.c: New file, implementing `tt_face_load_svg`,
	`tt_face_free_svg` and `tt_face_load_svg_doc`.
	* src/sfnt/ttsvg.h: Declarations of the SVG functions in
	`ttsvg.c`.

2022-01-20  Moazin Khatti  <moazinkhatri@gmail.com>

	Add flag `FT_CONFIG_OPTION_SVG`.

	This flag is going to be used to conditionally compile support for OT-SVG
	glyphs.  FreeType will do the parsing and rely on external hooks for
	rendering of OT-SVG glyphs.

	* devel/ftoption.h, include/freetype/config/ftoption.h
	(FT_CONFIG_OPTION_SVG): New flag.

2022-01-20  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[pshinter] Avoid unnecessary zeroing.
	
	* src/pshinter/pshalgo.c (psh_hint_table_init,psh_glyph_init,
	psh_glyph_interpolate_normal_points): Use FT_QNEW_ARRAY.

2022-01-20  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* include/freetype/freetype.h: Clarify `FT_Size` life cycle.

2022-01-20  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[base] Undefined scale means no scale.

	It might be surprising that FreeType does not have default ppem and
	the size has to be set explicitly or face undefined behavior with
	undefined variables and errors. This offers an alternative to
	missing or zero scale by simply setting FT_LOAD_NO_SCALE.  Defined
	behavior is bettr than undefined one.

	This is alternative to !132 and discussed in
	  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=43708

	* src/base/ftobjs.c (FT_Load_Glyph): Deal with zero scale.
	* include/freetype/freetype.h: Document it.

2022-01-18  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* src/autofit/afglobal.c (af_face_globals_new): Reduce zeroing.

	Everything in AF_FaceGlobals is initialized except metrics.  Those
	are zeroed here and initialized on demand later.

2022-01-16  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[bdf,type1] Avoid unnecessary hash zeroing.

	* src/bdf/bdflib.c (_bdf_parse_start): Use `FT_QALLOC`.
	* src/type1/t1load.c (parse_subrs): Use `FT_QNEW`.

2022-01-16  Ozkan Sezer  <sezeroz@gmail.com>

	Add Watcom C/C++ calling.

	In the unlikely case the source is built with OpenWatcom's -ec?
	switches to enforce a calling convention, the qsort() compare
	function must still be set to __watcall.

	* include/freetype/internal/compiler-macros.h (FT_COMPARE_DEF):
	Updated.

2022-01-15  Ben Wagner  <bungeman@chromium.org>

	[pshinter] Avoid accessing uninitialized zone.

	The `normal_top.count` may be 0, implying no `normal_top.zones` exist.
	The code must not access these (non-existent) `normal_top.zones`.

	* src/pshinter/pshalgo.c (ps_hints_apply): Do not assume that
	`normal_top.zones[0]` is initialized. Test `normal_top.count`
	before using `normal_top.zones[0]`. Do not rescale if there are no
	`zones`.

	Fixes: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=43675

2022-01-15  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[cache] Avoid unnecessary zeroing.

	* src/cache/ftccmap.c (ftc_cmap_node_new): Use `FT_QNEW`.
	* src/cache/ftcimage.c (FTC_INode_New): Ditto.
	* src/cache/ftcsbits.c (FTC_SNode_New): Ditto.

2022-01-15  Ozkan Sezer  <sezeroz@gmail.com>

	Add Watcom C/C++ support.

	* include/freetype/config/integer-types.h: Make sure `long long` is
	used then available.
	* include/freetype/internal/ftcalc.h (FT_MSB): Add Watcom C/C++ pragma.

2022-01-15  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* src/sdf/ftbsdf.c (ED): s/near/prox/.

	This works around the Watcom C definition of `near` as restricted
	__near.

2022-01-15  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* include/freetype/internal/compiler-macros.h [FT_COMPARE_DEF]: Tighten.

	This works around Watcom C library using __watcall.

2022-01-14  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* src/pshinter/pshglob.c (psh_globals_new): Avoid zeroing.

	This large allocation is followed by careful initialization. Whatever
	is missed should be initialized manually.

2022-01-14  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* src/base/fthash.c (hash_insert): Avoid unnecessary zeroing.

2022-01-14  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* src/bdf/bdflib.c (_bdf_parse_glyphs): Remove redundant assignment.

2022-01-13  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* src/lzw/ftlzw.c (FT_Stream_OpenLZW): Avoid unnecessary zeroing.

2022-01-13  Ben Wagner  <bungeman@chromium.org>

	[bzip2] Reset bzip stream on any error.

	According to the bzip documentation it is undefined what will happen if
	`BZ2_bzDecompress` is called on a `bz_stream` it has previously returned an
	error against.  If `BZ2_bzDecompress` returns anything other than `BZ_OK`
	the only valid next action is `BZ2_bzDecompressEnd`.

	Reported as

	  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=43564

	* src/bzip2/ftbzip2.c (FT_BZip2FileRec_): Add `reset` to track the need to
	reset the stream.
	(ft_bzip2_file_init): Initialize `reset` to 0.
	(ft_bzip2_file_reset): Set `reset` to 0 after resetting.
	(ft_bzip2_file_fill_output): Set `reset` to 1 when `BZ2_bzDecompress`
	returns anything other than `BZ_OK`.

2022-01-12  Werner Lemberg  <wl@gnu.org>

	.gitlab-ci.yml: Minor comment cleanups.

2022-01-12  Azamat H. Hackimov  <azamat.hackimov@gmail.com>

	.gitlab-ci.yml: Add steps to `before_script` to ensure recent CA.

	Fetch current list of valid CAs from Windows Update and manually import them
	to trusted datastore.  This action is required to make downloads work from
	sites that need recent Let's Encrypt ISRG Root X1 certificate.

2022-01-11  Ben Wagner  <bungeman@chromium.org>

	Revert "[bzip2] Avoid use of uninitialized memory."

	This reverts commit d276bcb7f0c02c20d3585b2e5626702df6d140a6.

	The original commit did avoid the use of uninitialized memory. However,
	it appears that the original commit is no longer required. The
	underlying issue was resolved by a change in freetype2-testing "Build
	bzip2 correctly." [0]. Prior to [0] bzip2 was built without msan, so
	bzip2 writes were not tracked or considered initialized. Clearing
	`buffer` in the original commit allowed msan to see the `buffer` content
	initialized once in FreeType code, but msan saw no writes into buffer
	from bzip2.  With bzip2 now built with msan, the bzip2 writes are
	properly instrumented and msan sees the bzip2 writes into the buffer. As
	a result the original commit can be safely reverted to allow for better
	detection of other uninitialized data scenarios.

	* src/bzip2/ftbzip2.c (FT_Stream_OpenBzip2): Revert to using `FT_QNEW`.

	[0] https://github.com/freetype/freetype2-testing/commit/3c052a837a3c960709227a0d6ddd256e87b88853

2022-01-11  Ben Wagner  <bungeman@chromium.org>

	[type42] Track how much type42 ttf data is available.

	Currently `T42_Open_Face` eagerly allocates 12 bytes for the ttf header
	data which it expects `t42_parse_sfnts` to fill out from /sfnts data.
	However, there is no guarantee that `t42_parse_sfnts` will actually be
	called while parsing the type42 data as the /sfnts array may be missing
	or very short. This is also confusing behavior as it means
	`T42_Open_Face` is tightly coupled to the implementation of the very
	distant `t42_parse_sfnts` code which requires at least 12 bytes to
	already be reserved in `face->ttf_data`.

	`t42_parse_sfnts` itself eagerly updates `face->ttf_size` to track how
	much space is reserved for ttf data instead of traking how much data has
	actually been written into `face->ttf_data`. It will also act strangely
	in the presense of multiple /sfnts arrays.

	* src/type42/t42objs.c (T42_Open_Face): ensure `ttf_data` is initialized
	to NULL. Free `ttf_data` on error.

	* src/type42/t42parse.c (t42_parse_sfnts): delay setting `ttf_size` and
	set it to the actual number of bytes read. Ensure `ttf_data` is freed
	if there are multiple /sfnts arrays or there are any errors.

2022-01-11  Dominik Röttsches  <drott@chromium.org>

	[sfnt] Fix limit checks for `COLR` v1 ClipBoxes

	* src/sfnt/ttcolr.c (tt_face_get_color_glyph_clipbox): Fix off-by-one in
	limit checks.

2022-01-11  Werner Lemberg  <wl@gnu.org>

	Update all copyright notices.

2022-01-11  Werner Lemberg  <wl@gnu.org>

	* src/sfnt/ttcolr.c (read_paint): Fix undefined left-shift operation.

	Reported as

	  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=43151

2022-01-11  Werner Lemberg  <wl@gnu.org>

	* src/type42/t42objs.c (T42_Open_Face): Avoid use of uninitialized memory.

	Reported as

	  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=43508

2022-01-11  Werner Lemberg  <wl@gnu.org>

	.gitlab-ci.yml: Fix typo in previous commit.

2022-01-11  Werner Lemberg  <wl@gnu.org>

	.gitlab-ci.yml: Update Windows image.

	The old image produced errors like

	```
	Downloading zlib patch from
	  https://wrapdb.mesonbuild.com/v2/zlib_1.2.11-5/get_patch
	A fallback URL could be specified using patch_fallback_url key in the wrap file
	WrapDB connection failed to
	  https://wrapdb.mesonbuild.com/v2/zlib_1.2.11-5/get_patch
	with error
	  <urlopen error [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify
	   failed: certificate has expired (_ssl.c:1122)>
	```

2022-01-11  Werner Lemberg  <wl@gnu.org>

	* subprojects/zlib.wrap: Update from upstream.

2022-01-10  Werner Lemberg  <wl@gnu.org>

	* src/sfnt/ttcolr.c (tt_face_get_color_glyph_clipbox): Add limit checks.

	Reported as

	  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=40716

2022-01-10  Werner Lemberg  <wl@gnu.org>

	[zlib] Don't typedef `ptrdiff_t`.

	While using zlib in 'solo' mode (via the `Z_SOLO` macro), we actually
	include some standard header files, making the typedef fail on systems where
	the native `ptrdiff_t` type differs.

	Fixes #1124.

	* src/zlib/zutil.h: Comment out definition; it doesn't work on Windows.

	* src/zlib/patches/freetype-zlib.diff: Updated.

2022-01-10  Werner Lemberg  <wl@gnu.org>

	[zlib] Some organizational changes.

	We now first apply zlib's `zlib2ansi` script, then FreeType's patch file.

	* src/gzip/README.freetype: Updated.

	* patches/0001-zlib-Fix-zlib-sources-to-compile-for-FreeType.patch: Renamed
	to...
	* patches/freetype-zlib.diff: This.
	Clean up description, then regenerate it as follows:

	  - Copy unmodified files from `zlib` repository.
	  - Run `zlib2ansi` script.
	  - Run `git diff -R > patches/freetype-zlib.diff.new`.
	  - Insert patch description of old diff file, then replace old diff with
	    new diff file.

2022-01-09  David Turner  <david@freetype.org>

	[gzip] Update sources to zlib 1.2.11

	This can be tested by building with the Unix development build

	  make setup devel
	  make

	or by building the freetype-demos programs with

	  meson setup build -Dfreetype2:zlib=internal
	  meson compile -C out

	and trying to run `ftview` with a `.pcf.gz` font file.

	* src/gzip/ftgzip.c, src/gzip/rules.mk: Update for new zlib sources.  Also
	remove the temporary fix introduced in commit 6a431038 to work around the
	fact that the internal sources were too old.

	* src/gzip/README.freetype: New file describing the origin of the sources
	and how they were modified.

	* src/gzip/patches/*: Patch files applied to original sources.

	* src/gzip/*: Updated zlib sources with the patch file(s) from
	`src/gzip/patches/` applied, followed by a conversion with zlib's
	`zlib2ansi` script.

2022-01-09  David Turner  <david@freetype.org>

	[meson] Change Zlib configuration option.

	* meson_options.txt, meson.build: Change the format of the 'zlib' meson
	build configuration option to be a combo with the following choices:

	  - none: Do not support gzip-compressed streams at all.

	  - internal: Support gzip-compressed streams using the copy of the gzip
	    sources under `src/gzip/`; this should only be used during development
	    to ensure these work properly.

	  - external: Support gzip-compressed streams using the 'zlib' Meson
	    subproject, linked as a static library.

	  - system: Support gzip-compressed streams using a system-installed version
	    of zlib.

	  - auto: Support gzip-compressed streams using a system-installed version
	    of zlib, if available, or using the 'zlib' subproject otherwise.  This
	    is the default.

	  - disabled: Backward-compatible alias for 'none'.

	  - enabled: Backward-compatible alias for 'auto'.

2022-01-09  Werner Lemberg  <wl@gnu.org>

	[bzip2] Avoid use of uninitialized memory.

	* src/bzip2/ftbzip2.c (FT_Stream_OpenBzip2): Don't use `FT_QNEW` but
	`FT_NEW` for setting up `zip` to avoid uninitialized memory access while
	handling malformed PCF fonts later on.

	Fixes

	  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=42800

2022-01-09  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[sfnt] Fix off-by-one error.

	The 0-base index is equal to the number of previosly parsed entries.
	It is an error to adjust it by one to get the number truncated by
	a stream error.  This is probably inconsequential because valid
	entries are correctly accounted for.

	* src/sfnt/ttload.c (check_table_dir): Do not adjust the truncated
	number of tables.

2022-01-08  Werner Lemberg  <wl@gnu.org>

	[sfnt, type42] Correct previous commit.

	Really fix https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=42773.

	* src/sfnt/ttload.c (check_table_dir): Revert change.

	* src/type42/t42.parse.c (t42_parse_sfnts): Don't use `FT_QREALLOC` but
	`FT_REALLOC` for setting up `ttf_data` to avoid uninitialized memory access
	while handling malformed TrueType fonts later on.

2022-01-07  Werner Lemberg  <wl@gnu.org>

	* src/sfnt/ttload.c (check_table_dir): Initialize `table`.

	Reported as

	  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=42773

2022-01-07  Werner Lemberg  <wl@gnu.org>

	[sfnt] Avoid 'runtime error: applying zero offset to null pointer'.

	* src/sfnt/ttsbit.c (tt_sbit_decoder_load_byte_aligned): Exit early if
	`line` is NULL.

2022-01-07  Werner Lemberg  <wl@gnu.org>

	[autofit, pshinter] Use `FT_OFFSET`.

	This avoids

	```
	runtime error: applying zero offset to null pointer
	```

	warnings of clang's undefined behaviour sanitizer.

	* src/autofit/afcjk.c (af_cjk_hints_link_segments,
	af_cjk_hints_compute_edges, af_cjk_hints_compute_blue_edges,
	af_cjk_hint_edges, af_cjk_align_edge_points): Do it.

	* src/autofit/afhints.c (af_glyph_hints_align_edge_points,
	af_glyph_hints_align_strong_points): Ditto.

	* src/autofit/aflatin.c (af_latin_metrics_init_widths,
	af_latin_hints_link_segments, af_latin_hints_compute_edges,
	af_latin_hints_compute_blue_edges, af_latin_hint_edges): Ditto.

	* src/pshinter/pshalgo.c (psh_hint_table_init): Ditto.

2022-01-06  Ben Wagner  <bungeman@chromium.org>

	[truetype] Reset localpoints when varying cvt.

	When iterating over the cvt tuples and reading in the points it is necessary
	to set all of `localpoints`, `points`, and `point_count` in all cases.  The
	existing code did not reset `localpoints` to `NULL` when there were no
	private point numbers.  If the previous tuple did have private point numbers
	and set `localpoints` to `ALL_POINTS` this would not be cleared and the
	wrong branch would be taken later, leading to possible heap buffer overflow.

	* src/truetype/ttgxvar.c (tt_face_vary_cvt): Reset `localpoints` to `NULL`
	when it isn't valid.

	Fixes: https://crbug.com/1284742

2022-01-02  Werner Lemberg  <wl@gnu.org>

	* builds/unix/configure.raw: Restore `SYSTEM_ZLIB` variable.

	This was accidentally removed with commit 93ebcbd0 almost eight years ago.

2021-12-27  Alexander Borsuk  <me@alex.bio>

	Fix warnings for CMake Unity builds.

	* src/cache/ftcbasic.c (FT_COMPONENT): Undefine macro before redefinition.
	* src/smooth/ftgrays.c (TRUNC, FRACT): Ditto.

2021-12-18  Alexander Borsuk  <alexander.borsuk@qnective.com>

	Clang-Tidy warning fixes.

	* src/base/ftobjs.c (FT_Get_Paint): Operator has equivalent nested operands.
	* src/bdf/bdflib.c (_bdf_add_property): Value stored to `fp` is never read.
	* src/sdf/ftbsdf.c (bsdf_init_distance_map): Value stored to `pixel` is
	never read.
	* src/sdf/ftsdf.c (split_sdf_shape): Value stored to `error` is never read.

2021-12-17  Eli Schwartz  <eschwartz@archlinux.org>

	* meson.build: Optimize lookup for `python3` program.

	The python module's `find_installation` method is intended to provide
	routines for compiling and installing python modules into the
	`site-packages` directory.  It does a couple of slow things, including run
	an introspection command to scrape sysconfig info from the detected
	interpreter, which are not needed for the sole use case of invoking the
	found installation as an executable.

	Furthermore, when invoked without the name or path of a python binary, it is
	hardcoded to always look for `python3` corresponding to the interpreter
	meson itself uses to run.  So using `find_installation` did not even allow
	detecting `python2` as a fallback.

	Instead, switch to a simple `find_program` lookup that finishes as soon as
	the program is found.

2021-12-17  Eli Schwartz  <eschwartz@archlinux.org>

	* builds/meson/*.py: Fix name of python executable for auxiliary scripts.

	The previous change to check the return code of `run_command` invocations
	caused the CI to fail.  Although most scripts used `python_exe` as the
	program command, the script to determine the project version did not.

	But, all scripts used `python` as the shebang, and this is not available on
	all systems.  Particularly Debian does not provide a `python` command,
	though `python3` does exist.  This meant that formerly the version number
	was lacking, and now the build simply fails.

	Instead, rely on `python3` since it is guaranteed to exist when running
	meson, and `python2` is end of life anyway.

2021-12-17  Eli Schwartz  <eschwartz@archlinux.org>

	* meson.build: Check the return value of `run_command`.

	By default, errors are not checked and a command that is somehow broken will
	just capture incorrect output (likely an empty string).  Current development
	versions of meson now raise a warning for this implicit behavior, and advise
	explicitly setting the `check:` keyword argumend to determine whether a
	failing return code should be considered an error.

	Since none of the commands in this project are expected to fail, mark them
	as required to succeed.

2021-12-13  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[truetype] Upstream the hdmx binary search.

	* src/truetype/ttobjs.h (TT_SizeRec): Add `widthp` for the hdmx
	widths.
	* src/truetype/ttobjs.c (tt_size_reset): Initialize `widthp` even
	though it might never be used by the interpreter.
	* src/truetype/ttgload.c (tt_loader_init): Avoid repeated searches
	in the hdmx table.

2021-12-12  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[truetype] Reset the IUP-called flags for each subglyph.

	This fixes fall-out from 7809007a5b88b15, where the composite
	accents were no longer hinted.

	* src/truetype/ttgload.c (ttloader_init): Move the IUP-called flag
	initialization from here...
	* src/truetype/ttinterp.c (TT_Run_Context): ... to here.

2021-12-12  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[truetype] Binary search through the `hdmx` records.

	The `hdmx` table is supposed to be sorted by ppem size, which
	enables binary search.  We also drop the check for the sufficient
	length of the record because it is now enforced when the table
	is loaded.

	* include/freetype/internal/tttypes.h (TT_FaceRec): Store the `hdmx`
	record pointers sorted by ppem instead of ppem's themselves.
	* src/truetype/ttpload.c (tt_face_load_hdmx): Prudently sort records.
	(tt_face_get_device_metrics): Implement binary search to retrieve
	advances.

2021-12-12  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[truetype] Honor FT_LOAD_ADVANCE_ONLY if `hdmx` is usable.

	This simply shortcuts the glyph loading if FT_LOAD_ADVANCE_ONLY
	is specified by FT_Get_Advances and the `hdmx` data are located.
	Particularly, the classic v35 interpreter or "verified" ClearType
	fonts might see 100x speed up in retrieving the hdmx cache.

	* src/truetype/ttgload.c (TT_Load_Glyph): Insert the shortcut.

2021-12-12  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[truetype] Initialize the loader with `hdmx` data.

	The `hdmx` matching can be done before the glyph is loaded.

	* include/freetype/internal/tttypes.h (TT_LoaderRec): Add a field.
	* src/truetype/ttgload.c (compute_glyph_metrics): Relocate the `hdmx`
	code from here...
	(tt_loader_init): ... to here, before the glyph is loaded.

2021-12-12  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[truetype] Relocate subpixel flag setting.

	`TT_RunIns` is too busy to deal with subpixel flags. It is better
	to set them in `tt_loader_init`, which is executed before each
	glyph program.

	* src/truetype/ttinterp.c (TT_RunIns): Move the flag setting from
	here...
	* src/truetype/ttgload.c (tt_loader_init): ... to here.

2021-12-12  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[truetype] Limit INSTCTRL appication within specs.

	* src/truetype/ttinterp.c (Ins_INSTCTRL): Limit its global effects
	to the CVT program and local effects to the glyph program.

	This also fixes an Infinality buglet. The `ignore_x_mode` should be
	locally unset by the glyph program.

2021-12-09  Ben Wagner  <bungeman@chromium.org>

	[bdf] Fix use of uninitialized value.

	In _bdf_readstream if the data contained no newline then the buffer
	would continue to grow and uninitialized data read until either the
	uninitialized data contained a newline or the buffer reached its
	maxiumum size. The assumption was that the line was always too long and
	the buffer had been filled, however this case can also happen when there
	is not enough data to fill the buffer.

	Correct this by properly setting the cursor to the end of the available
	data, which may be different from the end of the buffer. This may still
	result in one extra allocation, but only on malformed fonts.

	* src/bdf/bdflib.c (_bfd_readstream): Correctly update cursor. Remove
	unread set of `avail`.

	Bug: https://lists.nongnu.org/archive/html/freetype-devel/2021-12/msg00001.html

2021-12-07  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[truetype] Reduce Infinality footprint again.

	* src/truetype/ttgload.c (compute_glyph_metrics): Streamline and
	prioritize the Infinality checks to use `hdmx`.

2021-12-07  Cameron Cawley  <ccawley2011@gmail.com>

	[builds/windows] Guard some non-ancient API.

	We can support Windows 98 and NT 4.0 in principle...

	* builds/windows/ftdebug.c, builds/windows/ftsystem.c: Check for the
	ancient SDK using _WIN32_WINDOWS, _WIN32_WCE, or _WIN32_WINNT.

2021-12-07  Cameron Cawley  <ccawley2011@gmail.com>

	* builds/windows/visualc/freetype.vcproj: Add missing file.

2021-12-02  Werner Lemberg  <wl@gnu.org>

	* Version 2.11.1 released.
	==========================

	Tag sources with `VER-2-11-1'.

	* docs/VERSION.TXT: Add entry for version 2.11.1.
	* docs/CHANGES, docs/release: Updated.

	* README, src/base/ftver.rc, builds/windows/vc2010/index.html,
	builds/windows/visualc/index.html, builds/windows/visualce/index.html,
	builds/wince/vc2005-ce/index.html, builds/wince/vc2008-ce/index.html,
	docs/freetype-config.1: s/2.11.0/2.11.1/, s/2110/2111/.

	* include/freetype/freetype.h (FREETYPE_PATCH): Set to 1.

	* builds/unix/configure.raw (version_info): Set to 24:1:18.
	* CMakeLists.txt (VERSION_PATCH): Set to 1.

	* builds/toplevel.mk (version_tag, CHANGELOG_SCRIPT): New variables.
	(do-dist): Generate `ChangeLog` file with all commits since last release.

2021-11-30  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[builds/windows] Improve debugging.

	* builds/windows/ftdebug.c (FT_Message, FT_Panic): Buffer output
	and call `OutputDebugStringA` only if `IsDebuggerPresent`.
	[_WIN32_WCE] (OutputDebugStringA): Implement the missing API.

2021-11-29  Seigo Nonaka  <nona@google.com>

	* src/base/ftobjs.c (FT_Request_Metrics): Fix build warning on Android.

	Use casts since `FT_USHORT_MAX` is unsigned short in bionic (libc used in
	Android).

2021-11-28  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* builds/windows/vc2010/freetype.vcxproj (DlgCopy): Minor tweak.

2021-11-26  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* src/truetype/ttpload.c (tt_face_load_hdmx): Added comments.

2021-11-26  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[truetype] Quietly reject out-of-spec `hdmx` tables.

	The `hdmx` table is optional and can be safely rejected without
	an error if it does not follow specifications. The record size
	must be equal to the number of glyphs + 2 + 32-bit padding.

	* src/truetype/ttpload.c (tt_face_load_hdmx): Thoroughly check
	the record size and improve tracing.

2021-11-23  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[truetype] Partly revert 5b626281.

	Fixes #1118.

	* src/truetype/ttpload.c (tt_face_load_hdmx): Do not assume that
	`record_size` is rounded even though the records are padded.

2021-11-23  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* builds/windows/vc2010/freetype.vcxproj (DlgCopy): Use transforms.

2021-11-22  Werner Lemberg  <wl@gnu.org>

	Update `CHANGES` files, other minor whitespace and documentation issues.

2021-11-21  Werner Lemberg  <wl@gnu.org>

	formats.txt: Add info about WOFF and WOFF2.

2021-11-21  Werner Lemberg  <wl@gnu.org>

	meson.build: Initialize `common_ldflags`.

2021-11-21  Lukas Oberhuber  <@lukaso>

	* meson.build: Fix compatibility version on MacOS.

	Fixes #1117.

2021-11-21  Werner Lemberg  <wl@gnu.org>

	* src/truetype/ttinterp.c (Ins_MD): Avoid `FT_ABS`.

	Reported as

	  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=38562

2021-11-20  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* include/freetype/fttypes.h (FT_MAKE_TAG): Remove the same casting.

2021-11-20  Werner Lemberg  <wl@gnu.org>

	[gxvalid] Fix minor compilation warning.

	* src/gxvalid/gxvmort5.c (gxv_mort_subtable_type5_subtable_setup): Declare
	as static.

2021-11-20  Werner Lemberg  <wl@gnu.org>

	[smooth] Fix stand-alone compilation.

	* src/smooth/ftgrays.c (FT_Trace_Enable, FT_Trace_Disable)[STANDALONE_]:
	Define.

2021-11-20  Werner Lemberg  <wl@gnu.org>

	Avoid undefined left-shifts.

	We really have to use double casts to avoid issues with C's and C++'s
	signedness propagation rules in implicit casts.

	Reported as

	  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=41178
	  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=41182

	* include/freetype/config/public-macros.h (FT_STATIC_CAST,
	FT_REINTERPRET_CAST): Modify macro to take two arguments.
	Update all callers.
	(FT_STATIC_BYTE_CAST): New macro.

	* include/freetype/freetype.h (FT_ENC_TAG): Use `FT_STATIC_BYTE_CAST`.
	* include/freetype/ftimage.h (FT_IMAGE_TAG): Ditto.
	* include/freetype/fttypes.h (FT_MAKE_TAG): Ditto.
	Use `FT_Tag` for casting.

	* src/ftraster/ftmisc.h (FT_MAKE_TAG): Removed, no longer needed.
	(FT_STATIC_BYTE_CAST): New macro.

	* src/smooth/ftgrays.c (FT_STATIC_CAST): Replace with...
	(FT_STATIC_BYTE_CAST): ... this.

2021-11-18  Werner Lemberg  <wl@gnu.org>

	Provide C++ versions for public macros with casts.

	Many FreeType clients use C++.  However `g++ -Wold-style-cast` warns for
	macros with C-style casts even for system header files; this also affects
	directories included with `-isystem`.  While this could be seen as a problem
	with g++, the problem is more a philosophical one: Over the time, C and C++
	diverged more and more, and some features of C are no longer the 'right'
	solution in C++.

	* include/freetype/config/public-macros.h (FT_STATIC_CAST,
	FT_REINTERPRET_CAST): New macros.

	* include/freetype/freetype.h (FT_ENC_TAG, FT_LOAD_TARGET_,
	FT_LOAD_TARGET_MODE): Use `FT_STATIC_CAST`.
	Correctly handle negative 'signed char' input.
	* include/freetype/ftimage.h (FT_IMAGE_TAG): Ditto.
	* include/freetype/fttypes.h (FT_MAKE_TAG, FT_BOOL): Ditto.
	* include/freetype/ftmodapi.h (FT_FACE_DRIVER_NAME): Use
	`FT_REINTERPRET_CAST`.

	* src/smooth/ftgrays.c (FT_STATIC_CAST)[STANDALONE_]: New macro.
	[!STANDALONE]: Include `FT_CONFIG_CONFIG_H`.

	Fixes #1116.

2021-11-16  Werner Lemberg  <wl@gnu.org>

	Fix clang++ warnings.

	* src/*: Initialize some variables to NULL.

2021-11-16  Werner Lemberg  <wl@gnu.org>

	[truetype] Updates for the forthcoming OpenType 1.9 standard (2/2).

	* src/truetype/ttgxvar.c (ft_var_load_item_variation_store):
	s/shortDeltaCount/wordDeltaCount/ (as done in the specification, too).
	Recognize new format and reject it for now.

2021-11-16  Werner Lemberg  <wl@gnu.org>

	[truetype] Updates for the forthcoming OpenType 1.9 standard (1/2).

	This is in preparation for implementing `DeltaSetIndexMap` format 1, which
	is used by `COLR` v1 tables, and which allows 32bit indices.

	  https://docs.microsoft.com/en-us/typography/opentype/otspec190/delta/otvarcommonformats_delta.html

	* src/truetype/ttgxvar.h (GX_DeltaSetIdxMapRec): Change type of `mapCount`
	to `FT_ULong`.

	* src/truetype/ttgxvar.c (ft_var_load_delta_set_index_mapping): Add argument
	for passing the table size; update caller.
	Implement new format.

2021-11-14  Werner Lemberg  <wl@gnu.org>

	Fix clang warnings.

	* src/gxvalid/gxvcmmn.h (GXV_SET_ERR_IF_PARANOID): Use 'do' block.
	* src/gxvalid/gxvmod.c (GXV_TABLE_LOAD, GXV_TABLE_VALIDATE): Ditto.

	* src/smooth/ftgrays.c (gray_convert_glyph): Add cast.

	* src/type1/t1gload.c (T1_Parse_Glyph_And_Get_Char_String): Remove cast.
	* src/type1/t1load.c (read_binay_data): Use `FT_ULong` for `size` parameter.
	(parse_subrs, parse_charstrings, parse_dict): Ditto; also add some casts.

2021-11-13  Dominik Röttsches  <drott@chromium.org>

	[sfnt] Avoid undefined shifts in `COLR` v1 paint parsing

	* src/sfnt/ttcolr.c (read_paint, tt_face_get_paint): Tighten shift
	behavior by using multiplication, mostly using macros from ftcalc.h.

	Fixes: https://bugs.chromium.org/p/chromium/issues/detail?id=1269168

2021-11-13  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[builds/windows] Improve `DlgCopy` target.

	Fixes #1113.

	* builds/windows/vc2010/freetype.vcxproj: Run `DlgCopy` conditionally
	and decouple it from `Build`.

2021-11-12  Alexei Podtelezhnikov  <apodtele@gmail.com>

	Explicitly define `FT_MSB` for Clang.

	* include/freetype/internal/ftcalc.h [__clang__] (FT_MSB): Updated.

2021-11-10  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* src/truetype/ttgxvar.c (ft_var_to_normalized): Edge optimization.

2021-11-10  Alexei Podtelezhnikov  <apodtele@gmail.com>

	Additional `FT_MSB` macro definitions.

	Better macros for Windoes CE and ARM in general, based on !109
	from metarutaiga.

	* include/freetype/internal/ftcalc.h [_MSC_VER] (FT_MSB): Updated.

2021-11-09  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[build/windows] Remove logging from default debug configurations.

	DLG is rather costly for performance and should be used judiciously.
	This removes it from the default configurations but gives an example
	how to enable it using the `UserDefines` property.

	* builds/windows/vc2010/freetype.vcxproj: Hide FT_DEBUG_LOGGING.

2021-11-08  Werner Lemberg  <wl@gnu.org>

	* src/sfnt/sfobjs.c (sfnt_open_font): Fix typo.

2021-11-08  Werner Lemberg  <wl@gnu.org>

	* src/gxvalid.*, src/otvalid.*: Fix `-Wformat` warnings.

2021-11-08  Werner Lemberg  <wl@gnu.org>

	[pshinter] Fix C++ compilation.

	* src/pshinter/pshalgo.c (psh_compute_dir): Fix type of `result`.
	(psh_hint_table_find_strong_points): Add cast.

2021-11-08  Werner Lemberg  <wl@gnu.org>

	[sfnt] Reduce footprint if WOFF and WOFF2 support is not needed.

	Based on a patch from metarutaiga (MR !106).  The gist of this commit is
	that it doesn't make sense to support WOFF without compression (which would
	be only possible in WOFF 1.0 anyway).

	* src/sfnt/sfobjs.c (sfnt_open_font): Guard WOFF code with
	`FT_CONFIG_OPTION_USE_ZLIB` block.
	Guard WOFF2 code with `FT_CONFIG_OPTION_USE_BROTLI` block.

	* src/sfnt/sfwoff.c, src/sfnt/sfwoff.h: Guard files with
	`FT_CONFIG_OPTION_USE_ZLIB` blocks, not parts of the code.

	* src/sfnt/sfwoff2.c, src/sfnt/sfwoff2.h, src/sfnt/woff2tags.c,
	src/sfnt/woff2tags.h: Guard files with `FT_CONFIG_OPTION_USE_BROTLI` blocks,
	not parts of the code.

	Fixes #1111.

2021-11-08  Werner Lemberg  <wl@gnu.org>

	[truetype] Make trickyness checks depend on TT_USE_BYTECODE_INTERPRETER.

	Based on a patch from metarutaiga (MR !106).

	* src/truetype/ttobjs.c (tt_skip_pdffont_random_tag,
	tt_check_trickyness_family, tt_synth_sfnt_checksum, tt_get_sfnt_checksum,
	tt_check_trickyness_sfnt_ids, tt_check_trickyness): Put functions into a
	`TT_USE_BYTECODE_INTERPRETER` block.
	(tt_face_init): Put trickyness checks into a `TT_USE_BYTECODE_INTERPRETER`
	block.

	Fixes #1111.

2021-11-08  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* src/sfnt/ttload.c (tt_face_load_gasp): Fix a type mismatch warning.

2021-11-07  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[dlg] Define DLG_STATIC explicitly.

	DLG_STATIC is intended to disable Windows DLL linking attributes.
	It does not hurt to define it explicitly when we wrap DLG code.
	This fixes tons of LNK4286 and C4273 warnings from MSVC if we
	forget to define DLG_STATIC as a compiler option.

	* builds/windows/vc2010/freetype.vcxproj: Remove DLG_STATIC option.
	* src/dlg/dlgwrap.c [FT_DEBUG_LOGGING]: Define DLG_STATIC.
	* include/freetype/internal/ftdebug.h [FT_DEBUG_LOGGING]: Ditto.

2021-11-07  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[dlg] Lighten up the inclusions.

	The DLG wrapper needs to know if FT_DEBUG_LOGGING is defined in
	`ftoption.h`. It does not need entire FreeType.

	* src/dlg/dlgwrap.c: Include FT_CONFIG_OPTIONS_H directly.

2021-11-07  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[truetype] Avoid some memory zeroing in variations.

	* src/truetype/ttgxvar.c (ft_var_readpackeddeltas, ft_var_load_avar,
	ft_var_load_item_variation_store, ft_var_load_gvar): Use FT_QNEW_ARRAY
	if memory immediately initialized or discarded otherwise.

2021-11-05  Jany Belluz  <jany.belluz@daltonmaag.com>

	[truetype] Fix handling of packed deltas in Variation Fonts.

	* src/truetype/ttgxvar (ft_var_readpackeddeltas): Don't expect the number of
	bytes used to encode the deltas to be higher than the number of encoded
	values.  The specification allows a very compact encoding; for example, a
	list of 200 zeros can be encoded with just a couple of bytes.

	We now count the consumed bytes to make sure to not read more than expected.

2021-11-04  Jany Belluz  <jany.belluz@daltonmaag.com>

	[truetype] Fix CVAR handling of tuples for all points.

	* src/truetype/ttgxvar (tt_face_vary_cvt): Function
	`ft_var_readpackedpoints`, when it returns `ALL_POINTS`, also sets
	`point_count` to value 0.  However, the CVAR code was incorrectly expecting
	that `point_count` would be set to match the length of the CVT table.

2021-11-04  Jany Belluz  <jany.belluz@daltonmaag.com>

	* src/truetype/ttgxvar.c: Fix typos in macros that guard CVAR code.

2021-11-04  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* docs/INSTALL: Mention Meson and MSBuild more prominently.

2021-11-03  Gabor Kertesz  <gabor.kertesz@linaro.org>

	[libpng] Update Meson wrap for win-arm64

	1.6.37-5 released patches for win-arm64 to successfully build
	libpng with Meson:
	https://github.com/mesonbuild/wrapdb/pull/205
	https://github.com/mesonbuild/wrapdb/pull/216

	Updated by the following command:
	meson wrap update libpng

	Tested on win-arm64 and x64.

2021-11-03  Dominik Röttsches  <drott@chromium.org>

	[sfnt] Clarify `COLR` v1 FT_Paint* format representations

	* include/freetype/ftcolor.h (FT_PaintLinearGradient,
	FT_PaintRadialGradient, FT_PaintSweepGradient, FT_PaintTransform,
	FT_PaintTranslate, FT_PaintScale, FT_PaintRotate, FT_PaintSkew): Clarify
	16.16 fixed point representation of struct fields.
	* src/sfnt/ttcolr.c (read_paint): Shift coordinates for
	FT_PaintLinearGradient, FT_PaintRadialGradient, FT_PaintSweepGradient
	accordingly.

	Fixes: https://gitlab.freedesktop.org/freetype/freetype/-/issues/1110

2021-11-03  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[builds/windows] Let MSBuild handle DLG copy.

	* builds/windows/vc2010/freetype.vcxproj: Specify DlgCopy target.
	* builds/windows/vc2010/script.bat: Deleted.

2021-10-29  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* src/truetype/ttgload.c (load_truetype_glyph): Fix MSVC warning C4312.

2021-10-29  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[builds/windows] Separate MSVC linker and librarian.

	MSVC uses LIB for static and LINK for dynamic libraries. They are
	related but the former has much smaller set of options.

	* builds/windows/vc2010/freetype.vcxproj: Updated.

2021-10-29  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[builds/windows] Revise MSVC linking optimizations.

	* builds/windows/vc2010/freetype.vcxproj: Optimize DLL linking only.
	* builds/windows/visualc/freetype.dsp: Ditto.
	* builds/windows/visualc/freetype.vcproj: Ditto.

2021-10-28  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[woff] Optimize table tagging.

	* include/freetype/internal/wofftypes.h (WOFF_TableRec): Use
	32-bit tag.
	* src/sfnt/sfwoff.c (woff_open_font): Use 32-bit tag.

2021-10-28  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[woff2] Optimize table tagging.

	Fixes #1107.

	* include/freetype/internal/wofftypes.h (WOFF2_TableRec): Use
	32-bit tag.
	* src/sfnt/sfwoff2.c (compare_tags, find_table, woff2_open_font):
	Use 32-bit tag.
	* src/sfnt/woff2tags.[ch] (woff2_known_tags): Use static storage and
	return 32-bit tag.

2021-10-26  Werner Lemberg  <wl@gnu.org>

	Formatting.

2021-10-26  Ben Wagner  <bungeman@chromium.org>

	[mm] Tolerate missing Blend dictionary entries

	In a Multiple Master font, the Blend dictionary must contain valid
	Private, FontInfo, and FontBBox. The current code will error if any of
	these are present and invalid, but will not error and will provide
	uninitialized data if the Blend dictionary exists but does not contain
	one of these entries. This change reverts to the older behavior of
	treating any missing entries as containing all zero data and not
	returning an error.

	In the future it may be best to keep track of when these are actually
	initialized and error if they are not.

	* src/type1/t1load.c (t1_allocate_blend): Zero initiailize.

2021-10-26  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[builds/windows] Add MSVC linker optimazations.

	We continue to build static libraries with statically linked C run-
	time and add options to optimize references.

	* builds/windows/vc2010/freetype.vcxproj: Sort entries, add options.

2021-10-23  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* builds/windows/vc2010/freetype.vcxproj: Use MachineARM64.

2021-10-22  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[builds/windows] Prioritize x64.

	* builds/windows/vc2010/freetype.sln: Sort entries.

2021-10-22  Gabor Kertesz  <gabor.kertesz@linaro.org>

	[builds/windows] Add ARM64 platform.

	* builds/windows/vc2010/freetype.sln: Updated
	* builds/windows/vc2010/freetype.vcxproj: Updated.
	* builds/windows/vc2010/freetype.vcxproj.filters: Minor fix.

2021-10-21  Ben Wagner  <bungeman@chromium.org>

	[mm] Delay setting blend weight and design position.

	Previously the `blend->weight_vector`, `blend->default_weight_vector`,
	and `blend->design_pos` were set early to allocated but uninitialized
	memory under the assumption that the memory would eventually be
	initialized. However, it is possible that some of the required
	keywords may not actually be present, leaving the memory uninitialized.
	This is different from a present but invalid table, which would produce
	an error.

	Reported as
	  https://bugs.chromium.org/p/chromium/issues/detail?id=1261762

	* src/type1/t1load.c (t1_allocate_blend): Remove early allocation and
	initialization.
	(parse_blend_design_positions, parse_weight_vector): Parse into local
	and assign to blend if valid.
	(T1_Open_Face): Check that if a blend exists that it has the weight
	vector and design positions.

2021-10-21  Ben Wagner  <bungeman@chromium.org>

	[cff] Commit vstore data and regions on allocation.

	The vstore->regionCount and vstore->dataCount were read directly
	from the data. However, vstore->varRegionList and vstore->varData
	would still contain uninitialized entries with uninitialized
	pointers in the event of an error, leading to issues when attempting
	to clean up.

	Reportd as
	  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=40104

	* src/cff/cffload.c (cff_vstore_load): Read the region and data counts
	into locals and update the vstore counts immediately after each entry
	becomes free-able.

2021-10-20  Ben Wagner  <bungeman@chromium.org>

	[sfnt] Delay setting gasp ranges and count until computed.

	Previously, the gasp.numRanges was set and gasp.gaspRanges was
	allocated and assigned before a possible early exit if the frame could
	not be entered. It is also possible that the gaspRanges allocation
	could fail but the numRanges still be set to non-zero. In such cases
	an error would be returned, but the face would have a gasp in an
	inconsistent state which may still be accessed.

	Reported as
	  https://bugs.chromium.org/p/chromium/issues/detail?id=1261450

	* src/sfnt/ttload.c (tt_face_load_gasp): Delay setting gasp.numRanges
	and gasp.gaspRanges until after the ranges are initialized.

2021-10-20  Ben Wagner  <bungeman@chromium.org>

	[sfnt] Delay setting names and langTags until computed.

	Previously, the table->names and table->langTags fields were created
	pointing to uninitialized memory and an early exit could happen if the
	frame could not be entered. The caller would then be unable to properly
	dispose of the memory as the string fields had not been initialized.

	Reported as
	  https://bugs.chromium.org/p/chromium/issues/detail?id=1261343

	* src/sfnt/ttload.c (tt_face_load_name): delay setting table->langTags
	and table->names until after the memory they will point to is fully
	initialized.

2021-10-20  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* tests/issue-1063/main.c: s/PATH_MAX/FILENAME_MAX/.

	Closes !97 for Windows by using a standard macro.

2021-10-19  Werner Lemberg  <wl@gnu.org>

	[bdf, cid, pfr, winfonts] Improve rejection of other font formats.

	This is mainly for better diagnostics of malformed fonts.

	* src/bdf/bdflib.c (_bfd_readstream): Stop font format testing if the first
	input line is too long or doesn't end with `\r` or `\n`.

	* src/cid/cidparse.c (cid_parser_new): Don't handle too short input as an
	error but as an unknown format.

	* src/pfr/pfrobjs.c (pfr_face_init): Ditto.

	* src/winfonts/winfnt.c (fnt_font_load, fnt_face_get_dll_font): Ditto.

2021-10-19  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[pcf] Zero out the allocated properties.

	Fallout reported as
	  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=40033

	* src/pcf/pcfread.c (pcf_get_properties): Use FT_NEW_ARRAY and zero
	out `properties` in case of failure.

2021-10-18  Werner Lemberg  <wl@gnu.org>

	configure: Use string comparison for directory inodes.

	Inode values might be larger than integers supported by the shell.

	Fixes #1105.

2021-10-17  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* src/sfnt/ttload.c (tt_face_load_name): NULL-initialize langTag.

	Another attempt to fix fallout reported as
	  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=40024

2021-10-17  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[bdf] Fix up user properties.

	Fallout reported as
	  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=40027

	* src/bdf/bdflib.c (_bdf_add_property): Cosmetic NULL.
	(bdf_create_property): Limit allocations to customary signed
	FT_Long and NULL-initialize unused storage.
	(bdf_free_font): Do not free unused storage.

2021-10-17  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* src/sfnt/ttload.c (tt_face_load_name): Accounting fix.

	Fallout reported as
	  https://crbug.com/40024

2021-10-16  Ben Wagner  <bungeman@chromium.org>

	Fix typos in memory macros.

	FT_QNEW_ARRAY and FT_QRENEW_ARRAY were using the non-Q
	FT_MEM_NEW_ARRAY and FT_MEM_RENEW_ARRAY. Change these to use the Q
	versions. Also fix the one issue discovered in tt_face_load_name
	where table->names is created with FT_QNEW_ARRAY but the extra
	string member is not initialized to NULL.

	* include/freetype/internal/ftmemory.h (FT_Q(RE)NEW_ARRAY):
	Use FT_MEM_Q(RE)NEW_ARRAY as needed.

	* src/sfnt/ttload.c (tt_face_load_name): Initialize `entry->string`.

2021-10-15  Ben Wagner  <bungeman@chromium.org>

	[truetype] Reload context after re-executing `prep`.

	When a different hinting mode from the current is selected, the `prep` table
	must be re-executed with the new mode.  After this happens the context must
	be re-loaded in preparation for the glyph program to be run.

	Fixes #1104.

	* truetype/ttgload.c (tt_loader_init): Add call to `TT_Load_Context`.

2021-10-15  Werner Lemberg  <wl@gnu.org>

	[truetype] Minor documentation improvements.

2021-10-14  Anurag Thakur  <anuthadev@gmail.com>

	Add clang build to linux CI

2021-10-12  Anurag Thakur  <anuthadev@gmail.com>

	CI: Add macOS CI, including a clang build

2021-10-12  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* src/cid/cidload.c (parse_fd_array): Protect against trancation.

2021-10-12  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[type1] Revert to signed size for binary data.

	Recently introduced and reported as
	  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=39838

	* src/type1/t1load.c (read_binary_data): Reject negative size.
	(parse_subrs, parse_charstrings): Use customary signed size.

2021-10-11  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[psaux] Signedness revisions.

	Unsigned indexes are easier to check.

	* src/psaux/cffdecode.c (cff_decoder_parse_charstrings): Updated.
	* src/psaux/psintrp.c (cf2_interpT2CharString): Ditto.
	* src/psaux/t1decode.c (t1_decoder_parse_charstrings): Ditto.
	* src/type1/t1load.c (read_binary_data): Ditto.

2021-10-11  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[cid] Signedness revisions.

	Unsigned checks are simpler.

	* include/freetype/t1tables.h (CID_FaceInfoRec): Change to unsignd
	`num_dicts`.
	* src/cid/cidparse.h (CID_Parser): Change to unsigned `num_dict`.

	* src/cid/cidgload.c (cid_load_glyph): Updated.
	* src/cid/cidload.c (cid_load_keyword, parse_fd_array,
	parse_expansion_factor, parse_font_name, cid_read_subrs,
	cid_face_open): Updated.
	* src/cid/cidobjs.c (cid_face_done): Updated.
	* src/cid/cidparse.c (cid_parser_new): Updated.

2021-10-09  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* src/cid/cidload.c (cid_face_open): Streamline CIDCount check.

2021-10-08  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* src/cid/cidload.c (cid_face_open): Streamline SubrCount check.

2021-10-08  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* src/cid/cidgload.c (cid_load_glyph): Fortify incremental loading.

2021-10-08  Alexei Podtelezhnikov  <apodtele@gmail.com>

	Signedness revisions.

	This eliminates explicit casting by switching to unsigned fields.
	The revisions mostly impact the handling of CID fonts.

	* include/freetype/fttypes.h (FT_Data): Change to unsigned `length`.
	* include/freetype/t1tables.h (CID_FaceDictRec): Ditto for `sd_bytes`.
	(CID_FaceInfoRec): Ditto for `gd_bytes` and `gd_bytes`.
	* include/freetype/internal/tttypes.h (TT_LoaderRec): Ditto for
	`byte_len`.

	* src/cid/cidgload.c (cid_load_glyph): Updated.
	* src/cid/cidload.h (cid_get_offset): Update argument.
	* src/cid/cidload.c (cid_get_offset, cid_read_subrs, cid_face_open):
	Updated.
	* src/cff/cffgload.c (cff_get_glyph_data, cff_free_glyph_data):
	Updated.
	* src/psaux/psft.c (cf2_getT1SeacComponent): Updated.
	* src/truetype/ttgload.c (TT_Process_Composite_Glyph,
	load_truetype_glyph): Updated.

2021-10-07  Jan Alexander Steffens (heftig)  <jan.steffens@gmail.com>

	meson.build (gen_docs): Use `current_source_dir` instead of `source_root`.

	These two are not equal when FreeType is used as a subproject, such as in
	`freetype-demos`.  In that case, `source_root` points at the root project,
	causing the docs build to fail.

2021-10-05  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* src/smooth/ftgrays.c (FT_DIV_MOD): Limit the ARM workaround.

2021-10-05  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[builds/unix, builds/vms] Standardize `mmap` failure.

	* builds/unix/ftsystem.c (FT_Stream_Open): Check for MAP_FAILED.
	* builds/vms/ftsystem.c (FT_Stream_Open): Ditto.

	This should cover https://savannah.nongnu.org/patch/?5909 as well.

2021-10-05  Hugh McMaster  <hugh.mcmaster@outlook.com>

	autogen.sh: Only copy submodules if building from a git branch.

	`autogen.sh` fails if building from a standard source tarball.  Firstly, git
	expects to be called in a git repository, then `copy_submodule_files`
	blindly attempts to copy files.

	Debian, Ubuntu, Linux Mint, and other derivatives all run `autogen.sh`
	before compiling to regenerate build files.

	This patch ensures that various git commands are only called and 'dlg' files
	are only copied if `autogen.sh` is called from a git repository.

2021-10-05  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* include/freetype/internal/ftgloadr.h: Add missing header.

	Noticed by Jouk Jansen.

2021-10-05  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[pshinter] Additional clean-ups.

	* src/pshinter/pshalgo.h (psh_hint_table_find_strong_points): Streamline code.
	* src/pshinter/pshalgo.h (PSH_Glyph): Remove unused fields.

2021-10-04  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[pshinter] More convenient direction definition.

	It is easier to check directions using flags than integer values.

	* src/pshinter/pshalgo.h (PSH_Dir): Redefine directions.
	(PSH_PointRec): Use them as an enum type.

	* src/pshinter/pshalgo.c (psh_compute_dir): Modify return type.
	(psh_glyph_init, psh_hint_table_find_strong_points,
	psh_glyph_find_blue_points): Update users.

2021-10-04  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[pshinter] Remove unnecessary check.

	* src/pshinter/pshalgo.c (psh_hint_table_find_strong_points): Do not
	check if direction is defined before checking how.

2021-10-02  AnuthaDev  <anuthadev@gmail.com>

	CI: Hardcode meson version to fix build failure on windows

2021-10-01  Alexei Podtelezhnikov  <apodtele@gmail.com>

	Additional `FT_MSB` macro definitions.

	* include/freetype/internal/ftcalc.h [__DECC,_CRAYC]: Use builtins
	and intrinsics.

2021-10-01  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* src/autofit/afhints.c (af_glyph_hints_reload): Decrease casting.

2021-09-30  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* src/tools/apinames.c: Facilitate OpenVMS linker options.

2021-09-29  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* src/winfonts/winfnt.c (FNT_Face_Init): Correct reallocation.

2021-09-25  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[builds/unix] Do not use autoconf SIZEOF.

	* builds/unix/ftconfig.h.in [FT_USE_AUTOCONF_SIZEOF_TYPES]: Removed.
	* builds/unix/configure.raw: Remove AC_CHECK_SIZEOF and update.

	After this commit, autoconf builds will fully rely on <limits.h>
	rather than falling back on it if AC_CHECK_SIZEOF failed for some
	reason.  There is a risk that misconfigured cross-compilation might
	have wrong headers.  Note that Meson and CMake builds always relied on
	<limits.h> for sizes and availability of integer types.

2021-09-25  Alexei Podtelezhnikov  <apodtele@gmail.com>

	Propagate sign when reading OFF3.

	Signed 24-bit values are extremely rare.  FreeType only reads them in
	PFR fonts with bitmap strikes conditionally. They have not been seen
	in the known fonts.  That is why this bug could never be discovered.
	`FT_FRAME_OFF3` propagates sign correctly.

	* include/freetype/internal/ftstream.h (FT_PEEK_OFF3, FT_PEEK_OFF3_LE):
	Propagate sign into 32-bit value.
	(FT_GET_OFF3, FT_READ_OFF3): Needed fixing but removed as unused.

2021-09-25  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[bdf] Simplify comment collection or lack thereof.

	BDF comments are neither actually collected nor retrieved. There is
	no need to be fancy with delimiters.

	* src/bdf/bdflib.c (_add_bdf_comment): Delimit comments with zeros...
	(bdf_load_font): ...and do not null-terminate comments additionally.
	(_bdf_parse_glyphs): Check if comments are kept, which they are not.
	(_bdf_parse_start): Minor clean up.

2021-09-24  Alexei Podtelezhnikov  <apodtele@gmail.com>

	Use NULL for pointers only.

	* src/bdf/bdflib.c (*): Code changes.
	* include/freetype/freetype.h: Comments only.
	* src/cff/cffload.c, src/cff/cffobjs.c: Ditto.
	* src/winfonts/winfnt.c: Ditto.

2021-09-23  Werner Lemberg  <wl@gnu.org>

	Minor documentation fixes and improvements.

2021-09-23  Alexei Podtelezhnikov  <apodtele@gmail.com>

	Reference `fopen` in the docs.

2021-09-23  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[bdf, pcf] Minor optimization.

	* src/pcf/pcfread.c (pcf_load_font): Do not call `FT_MulDiv` for a
	small job.
	* src/bdf/bdfdrivr.c (BDF_Face_Init): Ditto.
	* src/bdf/bdflib.c (_bdf_parse_glyphs): Fix a comment.

2021-09-22  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[base] Initialize stream memory earlier.

	With Windows memory management tracking heap, it is important to use
	it during the stream opening fallback. In Unix, the argument is
	unused, but it is better to set it correctly.

	* src/base/ftobjs.c (FT_Stream_New): Set memory before calling
	`FT_Stream_Open`.
	* builds/windows/ftsystem.c, builds/unix/ftsystem.c (FT_Stream_Open,
	ft_close_stream_by_free): Call `ft_alloc` and `ft_free` with proper
	memory argumment.

2021-09-22  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[builds/windows] Revert back to `CreateFileA` only.

	Calling `CreateFileW` without making sure that the patname is really
	`wchar_t` is a bad idea and can lead to unpredictable overreads. For
	Windows CE, we impelemnt the missing API.

	Fixes #1098 and !76 again.

	* builds/windows/ftsystem.c (FT_Stream_Open): Call `CreateFileA`.
	[_WIN32_WCE] (CreateFileA, FileSizeEx): Implement missing interfaces.

2021-09-21  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* src/bdf/bdflib.c (_bdf_parse_{start,glyphs}): Use appropriate scanner.

2021-09-21  Alexei Podtelezhnikov  <apodtele@gmail.com>

	Minor.

2021-09-20  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* src/cff/cffdrivr.c (cff_ps_get_font_{info,extra}): Use FT_QNEW.

2021-09-18  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[cache] Minor clean-ups.

	* src/cache/ftccache.h (FTC_CACHE_LOOKUP_CMP): Remove parantheses.
	* src/cache/ftccache.c (FTC_Cache_Lookup): Ditto.
	(FTC_Cache_RemoveFaceID): Remove unnecessary variable.

2021-09-17  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[builds/windows] Try both wide and narrow `CreateFile`

	Windows handles wchar_t* UTF-16 and char* ANSI (presently UTF-8)
	filenames using alternative -A and -W API. We'll try them both
	when opening a file. This means that you should not worry about
	about conversions.

	Fixes #1098 and !76.

	* builds/windows/ftsystem.c (FT_Stream_Open): Call alternative
	`CreateFile` in the case of failure.

2021-09-17  Edwin Steiner  <edwin.steiner@gmail.com>

	[cff] Explicitly set StandardEncoding or ExpertEncoding offsets.

	Fixes #1097.

	* src/cff/cffload.c (cff_encoding_load): Set special offset values.

2021-09-16  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[cache] Miscellaneous clean-ups.

	* src/cache/ftccache.c (ftc_get_top_node_for_hash, FTC_Cache_Clear):
	Remove barely used variables.
	(ftc_cache_add): Adjust casting.
	* src/cache/ftccmap.c (FTC_CMapCache_Lookup): Remove casting.
	* src/cache/ftcsbits.c (ftc_snode_load): Remove casting.

2021-09-16  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* src/cff/cffload.c (cff_fd_select_get): Remove casting.

2021-09-16  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* src/pcf/pcfread.c (pcf_read_TOC): Remove casting.

2021-09-15  Alexei Podtelezhnikov  <apodtele@gmail.com>

	Minor type adjustments.

	* src/cff/cffobjs.c (cff_face_init): Reduce casting.
	* src/truetype/ttobjs.c (tt_size_ready_bytecode): Ditto.
	* src/type1/t1load.c (T1_Set_MM_Design): Ditto.

2021-09-15  Alexei Podtelezhnikov  <apodtele@gmail.com>

	Replace boolean allocation macros with MEM ones.

	* src/base/ftbitmap.c (FT_Bitmap_Copy): Use MEM-macro.
	* src/base/ftobjs.c (ft_glyphslot_alloc_bitmap): Ditto.
	* src/bzip2/ftbzip2.c (ft_bzip2_alloc): Ditto.
	* src/cache/ftccache.c (ftc_cache_init): Ditto
	* src/gzip/ftgzip.c (ft_gzip_alloc): Ditto.
	* src/psnames/psmodule.c (ps_unicodes_init): Ditto.
	* src/sfnt/sfobjs.c (sfnt_load_face): Ditto.
	* src/sfnt/ttload.c (tt_face_load_name): Ditto.

2021-09-15  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[cache] Revert to some zeroing.

	* src/cache/ftccache.c (ftc_cache_init, ftc_cache_resize): Zero
	`buckets` again to fix some crashes.

2021-09-14  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* src/pshinter/pshrec.c (ps_mask_table_merge_all): Tweak loops.

	Fixes fallout from 731d0b685685 reported as

	  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=38685

2021-09-13  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[cff, pshinter] Clean up unsigned counters.

	Loops with unsigned decrement can be reliably stopped when the counter
	wraps around after reaching zero.

	* src/cff/cffload.c (cff_charset_compute_cids): Use unsigned counter.
	* src/pshinter/pshalgo.c (psh_hint_table_activate_mask): Ditto.
	* src/pshinter/pshrec.c (ps_mask_table_merge): Ditto.

2021-09-13  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[bdf, psnames, sfnt] Avoid some memory zeroing.

	* src/bdf/bdfdrivr.c (BDF_Face_Init): Use Q-macro.
	* src/sfnt/sfobjs.c (sfnt_load_face): Ditto.
	* src/psnames/psmodule.c (src/psnames/psmodule.c): Remove zero.

2021-09-13  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* src/base/ftobjs.c (FT_CMap_New): Revert to zeroing.

	Fixes fallout from c1fa7aa2bc96, reported as

	  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=38641

2021-09-13  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[truetype] Clean up `exec` initialization.

	* src/truetype/ttinterp.c (Init_Context): Absorbed into...
	(TT_New_Context): ... this function.

2021-09-13  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[truetype] Avoid some memory zeroing.

	* src/truetype/ttgload.c (load_truetype_glyph): Use Q-macro.
	* src/truetype/ttinterp.c (Update_Max): Ditto.
	* src/truetype/ttpload.c (src/truetype/ttpload.c): Ditto.

2021-09-13  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[base] Avoid some memory zeroing.

	* src/base/ftobjs.c (FT_New_Size, FT_CMap_New, FT_CMap_Done,
	ft_open_face_internal, ft_open_face_internal): Use Q-macros.

2021-09-13  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[cache, psaux] Remove zeros.

	* src/cache/ftcmru.c (FTC_MruList_New): Remove initialization.
	* src/psaux/psstack.c (cf2_stack_init): Ditto.

2021-09-12  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[cache] Avoid some memory zeroing.

	* src/cache/ftcmru.c (FTC_MruList_New): Use Q-macro.
	* src/cache/ftcmanag.c (FTC_Manager_RegisterCache): Ditto.
	* src/cache/ftccache.c (ftc_cache_init, ftc_cache_resize): Ditto.

2021-09-11  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* src/cache/ftcmanag.c (FTC_Manager_New): Add missing zero.

	Fixes fall out from a7b199d081e7.

2021-09-10  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[truetype] Tweak `hdmx` checking.

	Fixes #1096.

	* src/truetype/ttpload.c (tt_face_load_hdmx): Account for padding.

2021-09-10  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[truetype] Tweak `loca` clamping.

	Fixes #1095.

	* src/truetype/ttpload.c (tt_face_load_loca): Fix up clamping.
	* include/freetype/internal/tttypes.h (TT_Face): Correct docs.

2021-09-08  Alexei Podtelezhnikov  <apodtele@gmail.com>

	Fortify memory debugging (cont'd).

	* src/base/ftdbgmem.c (FT_DumpMemory): Check for active debugger.
	(ft_mem_table_destroy): Move `FT_DumpMemory` call from here...
	(ft_mem_debug_done): ... to here.

2021-09-08  Alexei Podtelezhnikov  <apodtele@gmail.com>

	Fortify memory debugging.

	These changes are neccessary to properly recover `memory->user` that
	holds the Windows heap handle now.

	* src/base/ftdbgmem.c (ft_mem_debug_init): Handle all table allocations,
	initializations, and sizing instead of...
	(ft_mem_table_new): ... this function removed.
	(ft_mem_debug_done): Better check for the active debugger and free the
	debugger table here instead of...
	(ft_mem_table_destroy): ... here.

2021-09-08  Werner Lemberg  <wl@gnu.org>

	src/tools/ftrandom/ftrandom.c (_XOPEN_SOURCE): Set to 600.

	This allows C99 compilation on Solaris.

	Problem reported by Mojca Miklavec.

2021-09-07  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[builds/windows] Use native memory allocation API.

	* builds/windows/ftsystem.c (ft_alloc, ft_realloc, ft_free):
	Wrap HeapAlloc, HeapReAlloc, and HeapFree.
	(FT_New_Memory): Set the heap handle.

2021-09-07  Werner Lemberg  <wl@gnu.org>

	[dlg] Synchronize with upstream.

	* src/dlg/dlgwrap.c (_XOPEN_SOURCE): Set to 600.

	Fixes #1093.

2021-09-04  Alexei Podtelezhnikov  <apodtele@gmail.com>

	Cosmetic zeros.

2021-09-03  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* src/bdf/bdflib.c (_bdf_parse_start): Keep parser memory.

2021-09-03  Werner Lemberg  <wl@gnu.org>

	autogen.sh: Make it work with old Solaris 10 shell.

2021-09-03  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[smooth, raster, sdf] Clean up initialization calls.

	* src/raster/ftraster.c (ft_black_init): Removed.
	(ft_black_new): Clean up.
	* src/sdf/ftbsdf.c (bsdf_raster_new): Ditto.
	* src/sdf/ftsdf.c (sdf_raster_new): Ditto.
	* src/smooth/ftgrays.c (gray_raster_new): Ditto.

2021-09-03  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* src/cache/ftcmanag.c (FTC_Manager_New): Avoid some zeroing.

2021-09-03  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* src/bdf/bdflib.c (bdf_load_font): Remove memory shuffling.

2021-09-03  Alexei Podtelezhnikov  <apodtele@gmail.com>

	Cosmetic zeros.

2021-09-02  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[base] Clean up stream reading.

	* src/base/ftstream.c (FT_Stream_ReadUShort, FT_Stream_ReadUOffset,
	FT_Stream_ReadULong and their LE variants): Remove unnecessary
	initialization and slightly refactor.
	(FT_Stream_GetByte, FT_Stream_ReadByte): Rename to return unsigned
	value and align with sister functions.

	* include/freetype/internal/ftstream.h (FT_Stream_GetByte,
	FT_Stream_ReadByte): Update prototypes and caller macros.

2021-09-02  Alexei Podtelezhnikov  <apodtele@gmail.com>

	s/0/NULL/ where appropriate.

2021-08-30  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* builds/windows/ftsystem.c (FT_Stream_Open): Fix double-close.

2021-08-30  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[smooth] Reduce shift in multiply-shift optimization.

	* src/smooth/ftgrays.c (FT_UDIVPREP, FT_UDIV): Reduce shift.

	Smaller shifts that keep the division operands of FT_UDIVPREP within
	32 bits result in slightly faster divisions, which is noticeable in
	the overall performance.  The loss of precision is tolerable until the
	divisors (the components dx and dy) approach 32 - PIXEL_BITS. With
	PIXEL_BITS = 8, this corresponds to 65,000 pixels or the bitmap size
	that we refuse to render anyway.

	Using `ftbench -p -s60 -t5 -bc timesi.ttf`,

	Before: 8.52 us/op
	After:  8.32 us/op

2021-08-28  Werner Lemberg  <wl@gnu.org>

	[truetype] Fix compilation if !TT_CONFIG_OPTION_BYTECODE_INTERPRETER.

	* src/truetype/ttgxvar.c (tt_cvt_ready_iterator): Compile function
	conditionally.
	(tt_face_vary_cvt) [!TT_CONFIG_OPTION_BYTECODE_INTERPRETER]: Add code.

	Fixes #1091.

2021-08-27  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[builds/windows] Revise SSE2 settings.

	* builds/windows/vc2010/freetype.vcxproj [x64]: Remove explicit SSE2.
	* builds/windows/visualc/freetype.vcproj [Win32]: Add explicit SSE2.

2021-08-27  Ben Wagner  <bungeman@chromium.org>

	[smooth] Detect SSE2 with MSVC for x86

	MSVC does not set `__SSE2__`. Instead one must check whether `_M_IX86_FP` is
	defined and greater than or equal to 2.

	* src/smooth/ftgrays.c (FT_SSE2): New macro.
	Use it where appropriate.

2021-08-26  Alexei Podtelezhnikov  <apodtele@gmail.com>

	Expand comment (cont'd).

2021-08-26  Alexei Podtelezhnikov  <apodtele@gmail.com>

	Expand comment.

2021-08-24  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* src/smooth/ftgrays.c (gray_render_conic): Refactor redundancy.

2021-08-24  suzuki toshiya  <mpsuzuki@hiroshima-u.ac.jp>

	[truetype] Fix for the family name shorter than 8 characters.

	* src/truetype/ttobjs.c (tt_skip_pdffont_random_tag):
	If the family name to be checked is shorter than 8 characters,
	do not check its syntax.

2021-08-24  suzuki toshiya  <mpsuzuki@hiroshima-u.ac.jp>

	[truetype] Simplify `trick_names'.

	* src/truetype/ttobjs.c (tt_check_trickyness_family): For the case
	that the beginning part of a long tricky family name is already
	registered as another tricky family name, no need to double-check
	the longer one.  Such long tricky family names are removed from
	the `trick_names'.

2021-08-24  suzuki toshiya  <mpsuzuki@hiroshima-u.ac.jp>

	[truetype] Add 2 tricky font names.

	Additional fix for the issue #1087.

	* src/truetype/ttobjs.c (tt_check_trickyness_family): Add 2 tricky
	font names reported in #1087.

2021-08-24  suzuki toshiya  <mpsuzuki@hiroshima-u.ac.jp>

	[truetype] New function to skip the randomization tag.

	* src/truetype/ttobjs.c (tt_skip_pdffont_random_tag):
	New function to skip the randomization tag in the names of the
	fonts embedded in a PDF.  It is used by tt_check_trickyness_family(),
	to keep from mistaking "DLC" in the randomization tag as a
	tricky font name. See discussion in:

	https://lists.nongnu.org/archive/html/freetype-devel/2021-02/msg00002.html

	For technical detail about the randomization tag, please find
	PDF Reference 5.5.3 "Font Subsets".  Thanks to Justyna Wawrzynska
	for pointing out the issue caused by the randomization tag.

2021-08-24  suzuki toshiya  <mpsuzuki@hiroshima-u.ac.jp>

	[truetype] Add checksums for 2 tricky fonts.

	Thanks to Ting717 for providing sample PDF. Fixes #1087.

	* src/truetype/ttobjs.c (tt_check_trickyness_sfnt_ids): Add
	checksums for 2 tricky fonts `DFHei-Bd-WIN-HK-BF' and
	`DFMing-Md-WIN-HK-BF'.

2021-08-23  Alexei Podtelezhnikov  <apodtele@gmail.com>

	Whitespace formatting.

2021-08-22  Alexei Podtelezhnikov  <apodtele@gmail.com>

	Decorate const arguments.

	* src/base/ftglyph.c (FT_Glyph_Transform, FT_Glyph_To_Bitmap): Do it.
	* include/freetype/ftglyph.h (FT_Glyph_Transform, FT_Glyph_To_Bitmap):
	Do it.

2021-08-21  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[smooth] Clean up the null cell usage.

	Put the null cell at the end of the pool and store it explicitly so that
	we can use it as both the limit and the dumpster.

	* src/smooth/ftgrays.c (gray_TWorker): Store the last `cell_null` and
	remove unnecesary fields.
	(NULL_CELL_PTR, CELL_IS_NULL): Remove in favor of explicit `cell_null`.
	(gray_dump_cells, gray_set_cell, gray_sweep{,_direct}): Update callers.
	(gray_convert_glyph_inner): Trace remaining cells (oh well).
	(gray_convert_glyph): Set up `cell_null` and slightly improve the pool
	management.

2021-08-20  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[base] Restore quiet no-op rendering of bitmap glyphs.

	Fixes #1076.

	* src/base/ftobjs.c (FT_Render_Glyph_Internal): Discard an error when
	rendering a bitmap glyph.

2021-08-20  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[smooth] Fortify 64-bit algorithm.

	* src/smooth/ftgrays.c (FT_UDIVPREP, FT_UDIV): s/long/FT_Int64/ and
	s/unsigned long/FT_UInt64/.
	(gray_render_line): Adjust a critical variable type.

2021-08-20  Carlo Bramini  <carlo.bramix@libero.it>

	* builds/windows/ftsystem.c (FT_Stream_Open): Support legacy Windows.

2021-08-20  Alexei Podtelezhnikov  <apodtele@gmail.com>

	Determine `long long` availability based on its size.

	MSVC, for example, used `long long` even without full C99 support.

	* include/freetype/config/ftstdlib.h: Check if `long long` limits are
	defined in <limits.h>.
	* include/freetype/config/integer-types.h: Check `long long` size and
	use it to typedef FT_Int64.

2021-08-19  Dominik Röttsches  <drott@chromium.org>

	[sfnt] Fix format expectation for `COLR` v1 ClipList

	* src/sfnt/ttcolr.c (tt_face_get_color_glyph_clipbox): Change ClipList
	format expectation to 1 instead of 0 to make it compliant with the
	latest spec.

2021-08-19  Alexei Podtelezhnikov  <apodtele@gmail.com>

	Readily use `long long` as a 64-bit type in C99 mode.

	* include/freetype/config/integer-types.h (FT_INT64):
	FT_CONFIG_OPTION_FORCE_INT64 is no longer required to use `long long`.

2021-08-19  Alexei Podtelezhnikov  <apodtele@gmail.com>

	Use FT_INT64 instead of FT_LONG64.

	* include/freetype/config/integer-types.h: Remove synonymous FT_LONG64.
	* include/freetype/internal/ftcalc.h: s/FT_LONG64/FT_INT64/.
	* src/base/ftcalc.c: Ditto.
	* src/base/fttrigon.c: Ditto.
	* src/smooth/ftgrays.c: Ditto.

2021-08-18  Alexei Podtelezhnikov  <apodtele@gmail.com>

	[builds/windows] Do not set CharacterSet for VC++.

	* builds/windows/vc2010/freetype.vcxproj: s/Unicode/NotSet/.
	* builds/windows/visualc/freetype.vcproj: s/"1"/"0"/.

2021-08-18  Werner Lemberg  <wl@gnu.org>

	* src/sdf/ftsdf.c (get_control_box): Fix compiler warning.

2021-08-18  Werner Lemberg  <wl@gnu.org>

	[base] Fix ppem size overflow.

	Fixes #1086.

	* src/base/ftobjs.c (FT_Request_Metrics): Add return value.
	Check whether ppem values fit into unsigned short values.
	(FT_Request_Size): Updated.

	* include/freetype/internal/ftobjs.h: Updated.

	* src/cff/cffobjs.c (cff_size_request), src/cid/cidobjs.c
	(cid_size_request), src/truetype/ttdriver.c (tt_size_request),
	src/type1/t1objs.c (T1_Size_Request): Updated.

2021-08-18  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* builds/windows/ftsystem.c (FT_Stream_Open): Cast to remove warning.

2021-08-18  Alexei Podtelezhnikov  <apodtele@gmail.com>

	* builds/windows/ftsystem.c (FT_Stream_Open): Support UNICODE compilation.

2021-08-09  Werner Lemberg  <wl@gnu.org>

	* src/sfnt/ttcolr.c (tt_face_get_color_glyph_clipbox): Minor fix.

2021-08-09  Dominik Röttsches  <drott@chromium.org>

	[sfnt] Add missing blend mode 'plus' to 'COLR' v1.

	* include/freetype/ftcolor.h (FT_Composite_Mode): Add missing blend mode
	'plus' after it was added to the spec.

2021-08-08  Werner Lemberg  <wl@gnu.org>

	include/freetype/freetype.h (FT_Encoding): Improve documentation.

	Based on a suggestion by Antony Lee <anntzer.lee@gmail.com>.

2021-08-07  Werner Lemberg  <wl@gnu.org>

	[smooth] Avoid integer overflow.

	Reported as

	  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=36243

	* src/smooth/ftgrays.c(ADD_LONG, SUB_LONG, MUL_LONG, NEG_LONG)
	[STANDALONE_]: Removed, unused.
	(ADD_INT) [STANDALONE_]: New macro.
	(FT_INTEGRATE): Use ADD_INT.

2021-08-07  Dominik Röttsches  <drott@chromium.org>

	[sfnt] Add API for retrieving a 'COLR' v1 'ClipBox' table.

	The optional 'COLR' v1 glyph-specific clip box helps upstream graphics
	libraries allocate a sufficiently large bitmap for a glyph without having to
	traverse the glyph graph for that.  See

	  https://github.com/googlefonts/colr-gradients-spec/issues/251

	for background on the introduction of this specification change.

	* include/freetype/ftcolor.h (FT_ClipBox): New structure.
	(FT_Get_Color_Glyph_ClipBox): New function declaration.

	* include/freetype/internal/sfnt.h (TT_Get_Color_Glyph_ClipBox_Func):
	New function type.
	(SFNT_Interface, FT_DEFINE_SFNT_INTERFACE): Use it.

	* src/base/ftobjs.c (FT_Get_Color_Glyph_ClipBox): New function to link API
	with SFNT implementation.

	* src/sfnt/sfdriver.c (sfnt_interface): Updated.
	* src/sfnt/ttcolr.c (Colr): New field `clip_list`.
	(tt_face_load_colr): Parse global clip list offset.
	(tt_face_get_color_glyph_clipbox): New function to find the clip box for a
	glyph id from the clip list array.
	* src/sfnt/ttcolr.h: Updated.

2021-08-06  Werner Lemberg  <wl@gnu.org>

	[smooth] Fix left shifts of negative numbers.

	Reported as

	  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=36241

	* src/smooth/ftgrays.c (LEFT_SHIFT): New macro.
	(gray_render_conic) [BEZIER_USE_DDA]: Use it.

2021-08-02  Werner Lemberg  <wl@gnu.org>

	* meson.build: Fix zlib support.

	This commit synchronizes zlib support with both autotools and cmake: If no
	external zlib is found (or intentionally disabled on the command line), use
	the internal zlib by undefining `FT_CONFIG_OPTION_SYSTEM_ZLIB` without
	modifying `FT_CONFIG_OPTION_USE_ZLIB`.

	Also improve summary output.

	Problem reported by Moazin.

2021-08-02  Anuj Verma  <anujv@iitbhilai.ac.in>

	[sdf] Fix out-of-range-access.

	* src/sdf/ftbsdf.c (first_pass, second_pass): Fix range during forward pass.
	Otherwise the index goes out of range for the last column.

	Fixes issue #1077.

2021-08-02  Anuj Verma  <anujv@iitbhilai.ac.in>

	Fix invalid memory access in `bsdf` rasterizer.

	Do not generate SDF from bitmap if the `FT_GLYPH_OWN_BITMAP` flag is not
	set.  In some cases the bitmap buffer is freed but still points to a valid
	address; to handle those cases check the flag before accessing the memory.

	* src/sdf/ftsdfrend.c (ft_bsdf_render): Handle the above case.
	Also, return an error message if the bitmap's rows/pitch is invalid,
	otherwise `slot->buffer` might be assigned to some invalid memory location.
	(ft_sdf_render): Same as above.
	Plus, move the outline back to original state after rasterization and not if
	any error occurs.

2021-07-29  Heiko Becker  <heirecka@exherbo.org>

	* meson.build: Honor `--includedir` instead of hard-coding 'include'.

2021-07-29  Werner Lemberg  <wl@gnu.org>

	src/sfnt/ttcolr.c: Minor formatting.

2021-07-29  Dominik Röttsches  <drott@chromium.org>

	[sfnt] 'COLR' v1 PaintSweepGradient spec update

	* src/sfnt/ttcolr.c (read_paint): PaintSweepGradient follows other
	spec changes and now has the angles specified as F2DOT14, reflect
	that in the implementation.
	* include/freetype/ftcolor.h (FT_PaintSweepGradient): Update
	documentation.

2021-07-29  Dominik Röttsches  <drott@chromium.org>

	[sfnt] Retrieve affine matrix from offset in 'COLR' v1 parsing.

	* src/sfnt/ttcolr.c (read_paint): Implement spec change where
	affine transform matrix is now referenced by offset instead of
	being placed inline in the PaintTransform table.

2021-07-29  Dominik Röttsches  <drott@chromium.org>

	[sfnt] 'COLR' v1 PaintSkew related spec updates

	* src/sfnt/ttcolr.c (read_paint): Implement spec changes around
	PaintSkew, PaintSkewAroundCenter.  Update parsing to read shorter
	values as changed in the spec.
	* include/freetype/ftcolor.h (FT_PaintSkew): Update documentation.

2021-07-29  Dominik Röttsches  <drott@chromium.org>

	[sfnt] PaintRotate/PaintRotateAroundCenter spec updates

	* src/sfnt/ttcolr.c (read_paint): Implement spec change where
	PaintRotate and PaintRotateAroundCenter were split for a more
	compact format definition.  Update parsing to read shorter values
	as changed in the spec.
	* include/freetype/ftcolor.h (FT_PaintRotate): Update documentation.

2021-07-29  Dominik Röttsches  <drott@chromium.org>

	[sfnt] 'COLR' v1 PaintTranslate and PaintScale precision

	* src/sfnt/ttcolr.c (read_paint): Implement spec changes in
	PaintTranslate and PaintScale and friends.  Update parsing to read
	new shorter values.

2021-07-29  AnuthaDev  <anuthadev@gmail.com>

	README.git: Add Code of Conduct.

2021-07-25  Werner Lemberg  <wl@gnu.org>

	ChangeLog housekeeping.

	Archive old `ChangeLog` file.

	We no longer write ChangeLog entries manually; instead, the file will be
	created from commit messages (which should be formatted in GNU's ChangeLog
	style) by a call to

	  gitlog-to-changelog --format='%B%n'

	or something similar (this script is part of the 'gnulib' repository).

2021-07-24  Werner Lemberg  <wl@gnu.org>

	Fix some `cppcheck` warnings.

	* src/bzip2/ftbzip2.c (ft_bzip2_file_skip_output), src/gzip/ftgzip.c
	(ft_gzip_file_skip_output): Reduce scope of `delta`.

	* src/psaux/psintrp.c, src/psaux/psintrp.h (cf2_interpT2CharString): Add
	`const` to `buf` parameter.

	* src/raster/ftraster.c (DelOld): Add `const` to `profile` parameter.
	(Vertical_Sweep_Span): Reduce scope of `target`.
	(FT_Outline_Get_CBox): Reduce scope of `xMin`, `xMax`, `yMin`, `yMax`.

	* src/smooth/ftgrays.c (gray_render_conic): Reduce scope of `split`.
	(gray_sweep, gray_sweep_direct): Reduce scope of `area`.

	* src/tools/apinames.c (names_dump) <OUTPUT_WATCOM_LBC>: Reduce scope of
	`temp`.

2021-07-24  AnuthaDev  <anuthadev@gmail.com>

	* .gitlab-ci.yml: Fixed cmake build, using correct options.

2021-07-24  AnuthaDev  <anuthadev@gmail.com>

	* CMakeLists.txt: Make `cmake` handle disabled dependencies correctly.

	Include 'CMakeDependentOption'.

	Replace `FT_WITH_XXX` options with `FT_DISABLE_XXX` and `FT_REQUIRE_XXX`
	pairs.  Update option logic accordingly.

	Fixes #1066.

2021-07-24  Ben Wagner  <bungeman@chromium.org>

	[autofit] Split `afwrtsys.h`.

	The header file `afwrtsys.h` has two distinct functions: to include the
	required writing system headers and also to generate code for each writing
	system.  At each current use site only one or the other is used, with
	various macro trickery selecting one or the other.  Split this header into
	`afws-decl.h` for the required writing system declarations and `afws-iter.h`
	for iterating over the writing systems to generate code.

	The motivation for this change is that the Visual C++ compiler treats the
	standard include guard idiom like `#pragma once` 'if no non-comment code or
	preprocessor directive comes before or after the standard form of the
	idiom'.  It appears to check this after macro expansion, so if
	`WRITING_SYSTEM` expands to empty the bottom of `afwrtsys.h` is empty and
	looks like the standard include guard idiom which is treated like `#pragma
	once`, so subsequent inclusion of `afwrtsys.h` is elided.

	Fixes #1075.

	* src/autofit/afglobal.c (af_writing_system_classes), src/autofit/aftypes.h
	(AF_WritingSystem), src/autofit/rules.mk (AUTOF_DRV_H): Updated.

	* src/autofit/afwrtsys.h: Split into...
	* src/autofit/afws-decl.h, src/autofit/afws-iter.h: New files.
