DSSSL Library Reference: Part of the Modular DocBook Stylesheet distribution
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# url-encode-char

## Name

url-encode-char -- Returns the url-encoded equivalent of a character

## Synopsis

    (url-encode-char ch)

## Description

Converts `ch` to a properly encoded URL character.

## Author

Norman Walsh, <ndw@nwalsh.com>

## Source Code

    (define (url-encode-char ch)
      ;; Returns the url-encoded equivalent of a character
      (cond ((char=? ch #\space)  "%20") ; space
    	((char=? ch #\U-0026) "%26") ; ampersand
    	((char=? ch #\?)      "%3F") ; question
    	((char=? ch #\{)      "%7B") ; open curly
    	((char=? ch #\})      "%7D") ; close curly
    	((char=? ch #\|)      "%7C") ; vertical bar
    	((char=? ch #\\)      "%5C") ; backslash
    	((char=? ch #\/)      "%2F") ; slash
    	((char=? ch #\^)      "%5E") ; caret
    	((char=? ch #\~)      "%7E") ; tilde
    	((char=? ch #\[)      "%5B") ; open square
    	((char=? ch #\])      "%5D") ; close square
    	((char=? ch #\`)      "%60") ; backtick
    	((char=? ch #\%)      "%25") ; percent
    	((char=? ch #\+)      "%2B") ; plus
    	(else (string ch))))

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