AttributeDefinition: Regex not woking

[Peter Schober]

* Losen, Stephen C. (scl) <scl at eservices.virginia.edu> [2016-05-27 14:23]:
> I think the regex must match the entire input string, at least that
> has been my experience.

It's good practice to always explicitly anchor regexes on both ends
anyway, to prevent false positives. I'd also rather not rely on the
tooling to provide implicit anchoring since APIs change, etc.
-peter