mercurial/stack.py

rust-changelog: removed now useless early conditional for NULL_REVISION

Now that the underlying `RevlogEntry` returned for `NULL_REVISION` is
viable, it has become pointless to check NULL_REVISION several times,
even for performance: the check will be far more frequent than the benefit
of bailing earlier in the rare case where the requested revision is
`NULL_REVISION`.

This case is covered explicitly by the first assertion of
`test_data_from_rev_null`.

# stack.py - Mercurial functions for stack definition
#
#  Copyright Olivia Mackall <[e-mail]> and other
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.


def getstack(repo, rev=None):
    """return a sorted smartrev of the stack containing either rev if it is
    not None or the current working directory parent.

    The stack will always contain all drafts changesets which are ancestors to
    the revision and are not merges.
    """
    if rev is None:
        rev = b'.'

    revspec = b'only(%s) and not public() and not ::merge()'
    revisions = repo.revs(revspec, rev)
    revisions.sort()
    return revisions