2 @section @code{isblank}
5 POSIX specification:@* @url{http://www.opengroup.org/onlinepubs/9699919799/functions/isblank.html}
9 Portability problems fixed by Gnulib:
12 This function is missing on some platforms:
13 AIX 4.3.2, IRIX 6.5, OSF/1 5.1, Solaris 9, mingw, MSVC 9.
15 This function cannot be called from plain inline or extern inline functions
20 Portability problems not fixed by Gnulib:
24 Note: This function's behaviour depends on the locale, but does not support
25 the multibyte characters that occur in strings in locales with
26 @code{MB_CUR_MAX > 1} (this includes all the common UTF-8 locales).
27 There are four alternative APIs:
31 This function operates in a locale independent way and returns true only for
32 ASCII characters. It is provided by the Gnulib module @samp{c-ctype}.
35 This function operates in a locale dependent way, on wide characters. In
36 order to use it, you first have to convert from multibyte to wide characters,
37 using the @code{mbrtowc} function. It is provided by the Gnulib module
41 This function operates in a locale dependent way, on multibyte characters.
42 It is provided by the Gnulib module @samp{mbchar}.
45 This function operates in a locale independent way, on Unicode characters.
46 It is provided by the Gnulib module @samp{unictype/ctype-blank}.