[MERGE] Conditionalize format warnings

[Ian Clatworthy]

Matthew D. Fuller wrote:

> For now, I'll suggest that I cut it back to just checking the
> locations/global config so we avoid multi-opens and loops and such,
> and just merging that, so we have SOME way to shut it off, pending a
> fuller and cleaner solution to the larger issues.
> 
> 

Matt,

A quick browse of the list email suggests this is back with you now. Is
that correct? Any further questions re Aaron's feedback?

Ian C.