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refuse to merge during a merge

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The following is an easy mistake to make for users coming from version
control systems with an "update and commit"-style workflow.

        1. git pull
        2. resolve conflicts
        3. git pull

Step 3 overrides MERGE_HEAD, starting a new merge with dirty index.
IOW, probably not what the user intended. Instead, refuse to merge
again if a merge is in progress.

Reported-by: Dave Olszewski <cxreg@pobox.com>
Signed-off-by: Clemens Buchacher <drizzd@aon.at>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Clemens Buchacher 2009-06-01 11:20:56 +02:00 committed by Junio C Hamano
parent 6a01554e63
commit c8c562a238
2 changed files with 7 additions and 1 deletions
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5
builtin-merge.c
View file

@ -836,8 +836,11 @@ int cmd_merge(int argc, const char **argv, const char *prefix)
struct commit_list **remotes = &remoteheads;
setup_work_tree();
if (file_exists(git_path("MERGE_HEAD")))
die("You have not concluded your merge. (MERGE_HEAD exists)");
if (read_cache_unmerged())
die("You are in the middle of a conflicted merge.");
die("You are in the middle of a conflicted merge."
" (index unmerged)");
/*
* Check if we are _not_ on a detached HEAD, i.e. if there is a

3
t/t3030-merge-recursive.sh
View file

@ -276,6 +276,9 @@ test_expect_success 'fail if the index has unresolved entries' '
test_must_fail git merge "$c5" &&
test_must_fail git merge "$c5" 2> out &&
grep "You have not concluded your merge" out &&
rm -f .git/MERGE_HEAD &&
test_must_fail git merge "$c5" 2> out &&
grep "You are in the middle of a conflicted merge" out
'