kc3-lang/gnulib/doc/posix-functions/wcwidth.texi

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  Date : 2024-10-27T17:01:29
  

  doc: Add a module index.
  
  * doc/Makefile (undocumented-modules.texi): New rule.
  (%.info, %.html, %.dvi, %.pdf): Depend on undocumented-modules.texi.
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  * doc/*.texi: Add module index entries.
  * doc/*/*.texi: Likewise.
  

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• doc/posix-functions/wcwidth.texi

• @node wcwidth
  @subsection @code{wcwidth}
  @findex wcwidth
  
  POSIX specification:@* @url{https://pubs.opengroup.org/onlinepubs/9799919799/functions/wcwidth.html}
  
  Gnulib module: wcwidth
  @mindex wcwidth
  
  Portability problems fixed by Gnulib:
  @itemize
  @item
  This function is missing on some platforms:
  Minix 3.1.8, mingw, MSVC 14.
  @item
  This function is not declared (without @code{-D_GNU_SOURCE}) on some platforms:
  glibc 2.8.
  @item
  This function handles combining characters in UTF-8 locales incorrectly on some
  platforms:
  macOS 14, NetBSD 9.3, OpenBSD 5.8, MidnightBSD 1.1.
  @item
  This function returns 2 for characters with ambiguous east asian width, even in
  Western locales, on some platforms:
  Solaris 11.4.
  @end itemize
  
  Portability problems not fixed by Gnulib:
  @itemize
  @item
  On Windows and 32-bit AIX platforms, @code{wchar_t} is a 16-bit type and therefore cannot
  accommodate all Unicode characters.
  @mindex c32width
  However, the Gnulib function @code{c32width}, provided by Gnulib module
  @code{c32width}, operates on 32-bit wide characters and therefore does not
  have this limitation.
  @item
  This function treats zero-width spaces like control characters on some
  platforms:
  AIX 7.2.
  @end itemize
  

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