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authorMiklos Vajna <vmiklos@frugalware.org>2008-10-03 12:04:47 (GMT)
committerShawn O. Pearce <spearce@spearce.org>2008-10-03 15:18:45 (GMT)
commitcf10f9fdd5e673a163847f0e931ce9731507e03b (patch)
tree16f66fce8188e900ae2c995ea62412e8671a3dd7 /branch.c
parent52e8370bc7a71366b664ece0a9ec0b79d673a356 (diff)
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builtin-commit: use reduce_heads() only when appropriate
Since commit 6bb6b034 (builtin-commit: use commit_tree(), 2008-09-10), builtin-commit performs a reduce_heads() unconditionally. However, it's not always needed, and in some cases even harmful. reduce_heads() is not needed for the initial commit or for an "ordinary" commit, because they don't have any or have only one parent, respectively. reduce_heads() must be avoided when 'git commit' is run after a 'git merge --no-ff --no-commit', otherwise it will turn the non-fast-forward merge into fast-forward. For the same reason, reduce_heads() must be avoided when amending such a merge commit. To resolve this issue, 'git merge' will write info about whether fast-forward is allowed or not to $GIT_DIR/MERGE_MODE. Based on this info, 'git commit' will only perform reduce_heads() when it's committing a merge and fast-forward is enabled. Also add test cases to ensure that non-fast-forward merges are committed and amended properly. Signed-off-by: Miklos Vajna <vmiklos@frugalware.org> Signed-off-by: SZEDER Gábor <szeder@ira.uka.de> Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Diffstat (limited to 'branch.c')
-rw-r--r--branch.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/branch.c b/branch.c
index b1e59f2..205b89d 100644
--- a/branch.c
+++ b/branch.c
@@ -168,5 +168,6 @@ void remove_branch_state(void)
unlink(git_path("MERGE_HEAD"));
unlink(git_path("MERGE_RR"));
unlink(git_path("MERGE_MSG"));
+ unlink(git_path("MERGE_MODE"));
unlink(git_path("SQUASH_MSG"));
}