absorb: preserve changesets which were already empty Most commands in Mercurial (commit, rebase, absorb itself) don’t create empty changesets or drop them if they become empty. If there’s a changeset that’s empty, it must be a deliberate choice of the user. At least it shouldn’t be absorb’s responsibility to prune them. The fact that changesets that became empty during absorb are pruned, is unaffected by this. This case was found while writing patches which make it possible to configure absorb and rebase to not drop empty changesets. Even without having such config set, I think it’s valuable to preserve changesets which were already empty.

#!/usr/bin/env python

from __future__ import absolute_import

import os
import sys

os.chdir(os.getenv('TESTTMP'))

if sys.argv[1] != "user@dummy":
    sys.exit(-1)

os.environ["SSH_CLIENT"] = "%s 1 2" % os.environ.get('LOCALIP', '127.0.0.1')

log = open("dummylog", "ab")
log.write(b"Got arguments")
for i, arg in enumerate(sys.argv[1:]):
    log.write(b" %d:%s" % (i + 1, arg.encode('latin1')))
log.write(b"\n")
log.close()
hgcmd = sys.argv[2]
if os.name == 'nt':
    # hack to make simple unix single quote quoting work on windows
    hgcmd = hgcmd.replace("'", '"')
r = os.system(hgcmd)
sys.exit(bool(r))