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gnulib/doc/posix-functions/wcwidth.texi
Bruno Haible b64c50cfe4 wcpcpy, wcpncpy: Ensure declaration on glibc >= 2.13 systems.
* m4/wcpcpy.m4 (gl_FUNC_WCPCPY): Require AC_USE_SYSTEM_EXTENSIONS.
* m4/wcpncpy.m4 (gl_FUNC_WCPNCPY): Likewise.
* modules/wcpcpy (Depends-on): Add extensions.
* modules/wcpncpy (Depends-on): Likewise.
* doc/posix-functions/wcpcpy.texi: Mention missing declaration on glibc
systems.
* doc/posix-functions/wcpncpy.texi: Likewise.
* doc/posix-functions/wcwidth.texi: Likewise.
2011-04-01 23:24:07 +02:00

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@node wcwidth
@section @code{wcwidth}
@findex wcwidth
POSIX specification:@* @url{http://www.opengroup.org/onlinepubs/9699919799/functions/wcwidth.html}
Gnulib module: wcwidth
Portability problems fixed by Gnulib:
@itemize
@item
This function is missing on some platforms:
IRIX 5.3, Solaris 2.5.1, mingw, BeOS.
@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 X 10.3.
@end itemize
Portability problems not fixed by Gnulib:
@itemize
@item
On AIX and Windows platforms, @code{wchar_t} is a 16-bit type and therefore cannot
accommodate all Unicode characters.
@end itemize