dirstate-v2: skip evaluation of hgignore regex on cached directories By making the computation of [has_ignored_ancestor] lazy we're eliding its computation in the common case when none of its descendants have changed on disk. On a ~400k files repo, with a cached status, we saw a ~64% reduction in CPU time, resulting in a speedup of ~10-15% (on ZFS), and a speedup of ~38% of XFS (XFS has faster stat operations for some reason).

releasenotes: use re.MULTILINE mode when checking admonitions Release note admonitions must start at the beginning of a line within the changeset description: .. admonitions:: The checkadmonitions function search for and validates admonitions. Unfortunately, since the ctx.description is multi-line, the regex search always fails unless the admonition is on the first line. This changeset adds re.MULTILINE to the re.compile to make the re opbject multi-line.

windows: gracefully handle when the username cannot be determined This assumes implementation details, but I don't see any other way than to check the environment variables ourselves (which would miss out on any future enhancements that Python may make). This was originally reported as https://foss.heptapod.net/mercurial/tortoisehg/thg/-/issues/5835.