Index: gnu/tests/factor/factor.pl
===================================================================
@@ -61,8 +61,10 @@ my @Tests =
# Map newer glibc diagnostic to expected.
# Also map OpenBSD 5.1's "unknown option" to expected "invalid option".
{ERR_SUBST => q!s/'1'/1/;s/unknown/invalid/!},
- {ERR => "$prog: invalid option -- 1\n"
- . "Try '$prog --help' for more information.\n"},
+ {ERR => "error: unexpected argument '-1' found\n\n"
+ . " tip: to pass '-1' as a value, use '-- -1'\n\n"
+ . "Usage: factor [OPTION]... [NUMBER]...\n\n"
+ . "For more information, try '--help'.\n"},
{EXIT => 1}],
['cont', 'a 4',
{OUT => "4: 2 2\n"},