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 --- advice.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) (limited to 'advice.c') diff --git a/advice.c b/advice.c index cb666acc3..3309521f4 100644 --- a/advice.c +++ b/advice.c @@ -3,6 +3,7 @@ int advice_push_nonfastforward = 1; int advice_status_hints = 1; int advice_commit_before_merge = 1; +int advice_resolve_conflict = 1; static struct { const char *name; @@ -11,6 +12,7 @@ static struct { { "pushnonfastforward", &advice_push_nonfastforward }, { "statushints", &advice_status_hints }, { "commitbeforemerge", &advice_commit_before_merge }, + { "resolveconflict", &advice_resolve_conflict }, }; int git_default_advice_config(const char *var, const char *value) @@ -27,3 +29,17 @@ int git_default_advice_config(const char *var, const char *value) return 0; } + +void NORETURN die_resolve_conflict(const char *me) +{ + if (advice_resolve_conflict) + /* + * Message used both when 'git commit' fails and when + * other commands doing a merge do. + */ + die("'%s' is not possible because you have unmerged files.\n" + "Please, fix them up in the work tree, and then use 'git add/rm ' as\n" + "appropriate to mark resolution and make a commit, or use 'git commit -a'.", me); + else + die("'%s' is not possible because you have unmerged files.", me); +} -- cgit v1.2.1