5 POSIX specification: @url{http://www.opengroup.org/susv3xsh/setenv.html}
9 Portability problems fixed by Gnulib:
12 This function is missing on some platforms:
13 AIX 4.3.2, HP-UX 11, IRIX 6.5, Solaris 9, mingw, BeOS.
16 Portability problems not fixed by Gnulib:
19 In some versions of glibc (e.g.@: 2.3.3), @code{setenv} doesn't fail if the
20 first argument contains a @samp{=} character.