D3209: amend: exit 0 if there are no changes

[quark (Jun Wu)]

quark added a comment.


  I think it depends on what scripts want to do. I guess mpm's original point is, suppose you have a build script, or something that should do nothing if nothing changed, then `hg amend && build_script` just works as expected. If amend returns 0, then it'd be more complex to detect "nothing changed" case.

REPOSITORY
  rHG Mercurial

REVISION DETAIL
  https://phab.mercurial-scm.org/D3209

To: spectral, #hg-reviewers
Cc: quark, mercurial-devel