tree 763f4ea28732dc1f34ac0e7c4274ec272bbb0825
parent 4627bc777e9ade5e3a85d6b8e8630fc4b6e2f8f6
author Phillip Wood <phillip.wood@dunelm.org.uk> 1574451783 +0000
committer Junio C Hamano <gitster@pobox.com> 1574473952 +0900

sequencer: fix empty commit check when amending

This fixes a regression introduced in 356ee4659b ("sequencer: try to
commit without forking 'git commit'", 2017-11-24). When amending a
commit try_to_commit() was using the wrong parent when checking if the
commit would be empty. When amending we need to check against HEAD^ not
HEAD.

t3403 may not seem like the natural home for the new tests but a further
patch series will improve the advice printed by `git commit`. That
series will mutate these tests to check that the advice includes
suggesting `rebase --skip` to skip the fixup that would empty the
commit.

Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>