durin42 added a comment.
I could go either way. A casual grep for "except TypeError" suggests we're
looking at 4 or 5 locations *total*, so my bias is to do it at the callsites
and avoid the annoyingly-large overhead of a wrapper function for something
that's so fundamental.
To: durin42, #hg-reviewers, indygreg
Cc: indygreg, mercurial-devel
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