travis-ci/travis-build — pull request #292 by AndrewLorente (2014-09-09 21:20:59+00:00)
Title: Provide a fallback for a function argument

For ease of debugging, we like to `set -u` in our scripts. Unfortunately, if it leaks out to the environment where build.sh is running, referencing an undefined '$1' breaks build.sh. This should fix that problem.