Merge change up to right before new-year copyright bumping

[gnulib.git] / doc / posix-functions / unsetenv.texi

diff --git a/doc/posix-functions/unsetenv.texi b/doc/posix-functions/unsetenv.texi
index 99a5e69..c25e65d 100644 (file)
--- a/doc/posix-functions/unsetenv.texi
+++ b/doc/posix-functions/unsetenv.texi
@@ -2,29 +2,36 @@
 @section @code{unsetenv}
 @findex unsetenv
 
-POSIX specification: @url{http://www.opengroup.org/onlinepubs/9699919799/functions/unsetenv.html}
+POSIX specification:@* @url{http://www.opengroup.org/onlinepubs/9699919799/functions/unsetenv.html}
 
-Gnulib module: setenv
+Gnulib module: unsetenv
 
 Portability problems fixed by Gnulib:
 @itemize
 @item
 This function is missing on some platforms:
-AIX 5.1, HP-UX 11, IRIX 6.5, Solaris 9, mingw, BeOS.
+AIX 5.1, HP-UX 11.23, IRIX 6.5, Solaris 9, mingw, MSVC 9, BeOS.
+@item
+This function is not declared on some platforms:
+OSF/1 5.1.
 @item
 This function has the return type @samp{void} instead of @samp{int} on some
 platforms:
-MacOS X 10.3, FreeBSD 6.0, NetBSD 1.6, OpenBSD 3.8, OSF/1 5.1.
+Mac OS X 10.3, FreeBSD 6.0, NetBSD 1.6, OpenBSD 3.8, OSF/1 5.1.
 @item
 On some platforms, this function does not fail with @samp{EINVAL} when
-passed a null pointer, an empty string, or a string containing @samp{=}:
-FreeBSD 6.0, NetBSD 1.6, OpenBSD 3.8.
+passed an empty string or a string containing @samp{=}:
+FreeBSD 6.0, NetBSD 1.6, OpenBSD 4.7.
 @item
 This function removes only the first value association for the given
 environment variable, not all of them, on some platforms:
-Solaris 10.
+Solaris 11 2011-11, Haiku.
 @end itemize
 
 Portability problems not fixed by Gnulib:
 @itemize
+@item
+Older versions of POSIX required that @code{unsetenv(NULL)} gracefully
+fail with @code{EINVAL}, but not all implementations guarantee this,
+and the requirement was removed.
 @end itemize