tree b9061ca0c52407c3d8c18f80e521e1dd4db3357c
parent 4de04e83d7ff621062b8b5456a14f2f313a2639c
author Rob Landley <rob@landley.net> 1458524367 -0500
committer Rob Landley <rob@landley.net> 1458524367 -0500

Posix requires "" to be false, and 00 should be false, and -0 should be false.
Fix memory leaks in regex. Simplify regex check (if we matched, subexpression
had to match). Don't exit() from a command, set exitval and return.