mercurial/utils/hashutil.py

command: automatically create alias for command using '-' in names

As discussed during the "5.6 Sprint" ignoring dash in command name open the way
to using them more. We can now move existing command to more readable (dash
using) names without breaking any compatibility.

Differential Revision: https://phab.mercurial-scm.org/D9515

from __future__ import absolute_import

import hashlib

try:
    from ..thirdparty import sha1dc

    sha1 = sha1dc.sha1
except (ImportError, AttributeError):
    sha1 = hashlib.sha1