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authorMatthieu Moy <Matthieu.Moy@imag.fr>2010-01-12 10:54:44 +0100
committerJunio C Hamano <gitster@pobox.com>2010-01-12 13:17:08 -0800
commitd38a30df7dd54c5c6883af1de1a03ec7d523cee5 (patch)
tree2f6f9f03d8ad66bcee2b7ba56384909450b1144d /builtin-revert.c
parent902f235378cb2b2f6dd5dd664b9630c95321f0ae (diff)
downloadgit-d38a30df7dd54c5c6883af1de1a03ec7d523cee5.tar.gz
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 <file>' 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 <Matthieu.Moy@imag.fr> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'builtin-revert.c')
-rw-r--r--builtin-revert.c15
1 files changed, 14 insertions, 1 deletions
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();