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@node getopt_long
@subsection @code{getopt_long}
@findex getopt_long
Gnulib module: getopt-gnu
Portability problems fixed by Gnulib:
@itemize
@item
This function is missing on some platforms:
AIX 5.1, HP-UX 11, IRIX 6.5, OSF/1 5.1, MSVC 9, Interix 3.5.
@item
The function @code{getopt_long} does not obey the combination of
@samp{+} and @samp{:} flags in the options string on some platforms:
glibc 2.11.
@item
The use of @samp{W;} in the optstring argument to does not always
allow @code{-W foo} to behave synonymously with @code{--foo}:
glibc 2.11.
@item
The function @code{getopt_long} does not support the @samp{+} flag in
the options string on some platforms:
MacOS X 10.5, AIX 5.2, OSF/1 5.1, Solaris 10.
@item
The value of @code{optind} after a missing required argument is wrong
on some platforms:
MacOS 10.5.
@item
The function @code{getopt_long} does not obey the @samp{-} flag in the
options string when @env{POSIXLY_CORRECT} is set on some platforms:
Cygwin 1.7.0.
@item
Some implementations fail to reset state, including re-checking
@env{POSIXLY_CORRECT}, when @code{optind} is set to @samp{0}:
NetBSD, Cygwin 1.7.0.
@item
The function @code{getopt_long} does not support options with optional
arguments on some platforms:
MacOS X 10.5, OpenBSD 4.0, AIX 5.2, IRIX 6.5, Solaris 11 2010-11, Cygwin 1.5.x.
@item
This function crashes if the option string includes @code{W;} but
there are no long options, on some platforms:
glibc 2.14.
@end itemize
Portability problems not fixed by Gnulib:
@itemize
@end itemize
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