branchmap: display filtername when `updatebranch` fails to do its jobs
We have a very handy assert at the ends of `branchmap.updatecache` that check
the resulting branchmap is actually valid.
I know we do not like assert in mercurial but this one is very handy for
debugging. There is really not reason for `branchmap.updatecache` to have this
kind of issue but this happened and handful of time during the development of
this or introduction of other related feature. I advice to keep it around until
we are a bit more confident with the new code.
--- a/mercurial/branchmap.py Fri Jan 18 01:24:29 2013 +0100
+++ b/mercurial/branchmap.py Sat Jan 19 02:29:56 2013 +0100
@@ -79,7 +79,7 @@
if revs:
partial.update(repo, revs)
partial.write(repo)
- assert partial.validfor(repo)
+ assert partial.validfor(repo), filtername
repo._branchcaches[repo.filtername] = partial
class branchcache(dict):