From d38a30df7dd54c5c6883af1de1a03ec7d523cee5 Mon Sep 17 00:00:00 2001 From: Matthieu Moy Date: Tue, 12 Jan 2010 10:54:44 +0100 Subject: Be more user-friendly when refusing to do something because of conflict. Various commands refuse to run in the presence of conflicts (commit, merge, pull, cherry-pick/revert). They all used to provide rough, and inconsistant error messages. A new variable advice.resolveconflict is introduced, and allows more verbose messages, pointing the user to the appropriate solution. For commit, the error message used to look like this: $ git commit foo.txt: needs merge foo.txt: unmerged (c34a92682e0394bc0d6f4d4a67a8e2d32395c169) foo.txt: unmerged (3afcd75de8de0bb5076942fcb17446be50451030) foo.txt: unmerged (c9785d77b76dfe4fb038bf927ee518f6ae45ede4) error: Error building trees The "need merge" line is given by refresh_cache. We add the IN_PORCELAIN option to make the output more consistant with the other porcelain commands, and catch the error in return, to stop with a clean error message. The next lines were displayed by a call to cache_tree_update(), which is not reached anymore if we noticed the conflict. The new output looks like: U foo.txt fatal: 'commit' is not possible because you have unmerged files. Please, fix them up in the work tree, and then use 'git add/rm ' as appropriate to mark resolution and make a commit, or use 'git commit -a'. Pull is slightly modified to abort immediately if $GIT_DIR/MERGE_HEAD exists instead of waiting for merge to complain. The behavior of merge and the test-case are slightly modified to reflect the usual flow: start with conflicts, fix them, and afterwards get rid of MERGE_HEAD, with different error messages at each stage. Signed-off-by: Matthieu Moy Signed-off-by: Junio C Hamano --- builtin-revert.c | 15 ++++++++++++++- 1 file changed, 14 insertions(+), 1 deletion(-) (limited to 'builtin-revert.c') diff --git a/builtin-revert.c b/builtin-revert.c index 151aa6a981..d14dde3fbf 100644 --- a/builtin-revert.c +++ b/builtin-revert.c @@ -233,6 +233,19 @@ static struct tree *empty_tree(void) return tree; } +static NORETURN void die_dirty_index(const char *me) +{ + if (read_cache_unmerged()) { + die_resolve_conflict(me); + } else { + if (advice_commit_before_merge) + die("Your local changes would be overwritten by %s.\n" + "Please, commit your changes or stash them to proceed.", me); + else + die("Your local changes would be overwritten by %s.\n", me); + } +} + static int revert_or_cherry_pick(int argc, const char **argv) { unsigned char head[20]; @@ -269,7 +282,7 @@ static int revert_or_cherry_pick(int argc, const char **argv) if (get_sha1("HEAD", head)) die ("You do not have a valid HEAD"); if (index_differs_from("HEAD", 0)) - die ("Dirty index: cannot %s", me); + die_dirty_index(me); } discard_cache(); -- cgit v1.2.1