rust: add `UncheckedRevision` type
This is the start of a series whose aim is to separate "checked" and
"unchecked" revision numbers. A "checked" revision number is valid for a given
index, allowing us to have faster algorithms that don't do redundant checks
all the time and have a clearer view of the kinds of revisions
we're working with.
'''
Examples of useful python hooks for Mercurial.
'''
from mercurial import (
patch,
util,
)
def diffstat(ui, repo, **kwargs):
"""Example usage:
[hooks]
commit.diffstat = python:/path/to/this/file.py:diffstat
changegroup.diffstat = python:/path/to/this/file.py:diffstat
"""
if kwargs.get('parent2'):
return
node = kwargs['node']
first = repo[node].p1().node()
if 'url' in kwargs:
last = repo.changelog.tip()
else:
last = node
diff = patch.diff(repo, first, last)
ui.write(patch.diffstat(util.iterlines(diff)))