unsetenv remove all matches
gnulib gl_cv_func_unsetenv_works wants unsetenv to remove all copies of a name and claims POSIX requires this. I don't see that in POSIX. The test also uses putenv which isn't POSIX, but XSI, and I don't have it.
gnulib gl_cv_func_unsetenv_works wants unsetenv to remove all copies of a name and claims POSIX requires this. I don't see that in POSIX. The test also uses putenv which isn't POSIX, but XSI, and I don't have it.