refuse to merge during a merge
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>
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@ -836,8 +836,11 @@ int cmd_merge(int argc, const char **argv, const char *prefix)
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struct commit_list **remotes = &remoteheads;
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setup_work_tree();
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if (file_exists(git_path("MERGE_HEAD")))
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die("You have not concluded your merge. (MERGE_HEAD exists)");
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if (read_cache_unmerged())
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die("You are in the middle of a conflicted merge.");
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die("You are in the middle of a conflicted merge."
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" (index unmerged)");
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/*
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* Check if we are _not_ on a detached HEAD, i.e. if there is a
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@ -276,6 +276,9 @@ test_expect_success 'fail if the index has unresolved entries' '
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test_must_fail git merge "$c5" &&
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test_must_fail git merge "$c5" 2> out &&
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grep "You have not concluded your merge" out &&
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rm -f .git/MERGE_HEAD &&
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test_must_fail git merge "$c5" 2> out &&
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grep "You are in the middle of a conflicted merge" out
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'
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