templater: specialize ResourceUnavailable error so that it can be caught
See the next patch how it will be used.
from __future__ import absolute_import
from mercurial.i18n import _
from mercurial import (
changegroup,
error,
extensions
)
def abort(orig, *args, **kwargs):
raise error.Abort(_('this is an exercise'))
def uisetup(ui):
extensions.wrapfunction(changegroup, 'getbundler', abort)