1 # rewriteutil.py - utility functions for rewriting changesets

     2 #

     3 # Copyright 2017 Octobus <contact@octobus.net>

     4 #

     5 # This software may be used and distributed according to the terms of the

     6 # GNU General Public License version 2 or any later version.

     7 

     8 from __future__ import absolute_import

     9 

    10 from . import (

    11     obsolete,

    12     revset,

    13 )

    14 

    15 def disallowednewunstable(repo, revs):

    16     """Checks whether editing the revs will create new unstable changesets and

    17     are we allowed to create them.

    18 

    19     To allow new unstable changesets, set the config:

    20         `experimental.evolution.allowunstable=True`

    21     """

    22     allowunstable = obsolete.isenabled(repo, obsolete.allowunstableopt)

    23     if allowunstable:

    24         return revset.baseset()

    25     return repo.revs("(%ld::) - %ld", revs, revs)