tree 839d8ea73ae01c55cc67163bfbfeec9fe62735f3
parent 1e1a005a53725d6d8dc912de9fe32133838c06c4
author Jordan Harband <ljharb@gmail.com> 1453072322 -0800
committer Jordan Harband <ljharb@gmail.com> 1453072322 -0800

[Fix] handle unbound shell variables.

Fixes #868.