bug#34944: 27.0.50; FR: support amend in vc-hg

[Richard Stallman]

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  > That a specially formatted header in the VC log buffer signals VC to
  > make the next checkin operation replace the last commit instead of
  > adding a new commit.  See vc-git-log-edit-toggle-amend and
  > vc-git-checkin for the details.  It boils down to whether or not the
  > nezt "git commit" is invoked with the --amend switch.

Thanks.

-- 
Dr Richard Stallman
President, Free Software Foundation (https://gnu.org, https://fsf.org)
Internet Hall-of-Famer (https://internethalloffame.org)