refs.c: make remove_empty_directories always set errno to something sane

diff --git a/t/check-non-portable-shell.pl b/t/check-non-portable-shell.pl
index 45971f43b77142fe1bb90262974c83c786cfe43d..b170cbc0452ca1b5a624f5cf330d420c397cb760 100755 (executable)
--- a/t/check-non-portable-shell.pl
+++ b/t/check-non-portable-shell.pl
@@ -16,12 +16,12 @@ sub err {
 
 while (<>) {
        chomp;
-       /^\s*sed\s+-i/ and err 'sed -i is not portable';
-       /^\s*echo\s+-n/ and err 'echo -n is not portable (please use printf)';
+       /\bsed\s+-i/ and err 'sed -i is not portable';
+       /\becho\s+-n/ and err 'echo -n is not portable (please use printf)';
        /^\s*declare\s+/ and err 'arrays/declare not portable';
        /^\s*[^#]\s*which\s/ and err 'which is not portable (please use type)';
-       /test\s+[^=]*==/ and err '"test a == b" is not portable (please use =)';
-       /^\s*export\s+[^=]*=/ and err '"export FOO=bar" is not portable (please use FOO=bar && export FOO)';
+       /\btest\s+[^=]*==/ and err '"test a == b" is not portable (please use =)';
+       /\bexport\s+[A-Za-z0-9_]*=/ and err '"export FOO=bar" is not portable (please use FOO=bar && export FOO)';
        # this resets our $. for each file
        close ARGV if eof;
 }