Merge branch 'js/maint-no-cherry-pick-head-after-punted' into js/no-cherry-pick-head-after-punted

* js/maint-no-cherry-pick-head-after-punted:
cherry-pick: do not give irrelevant advice when cherry-pick punted
revert.c: defer writing CHERRY_PICK_HEAD till it is safe to do so

Conflicts:
builtin/revert.c

diff --git a/builtin/revert.c b/builtin/revert.c
index ba27cf15ee5478981a0a9a53493f41b67fcf9440..4eb4193d34a3c5328fba50e70d38654c386c7906 100644 (file)
--- a/builtin/revert.c
+++ b/builtin/revert.c
@@ -304,7 +304,7 @@ static void write_cherry_pick_head(struct commit *commit)
        strbuf_release(&buf);
 }
 
-static void print_advice(void)
+static void print_advice(int show_hint)
 {
        char *msg = getenv("GIT_CHERRY_PICK_HELP");
 
@@ -319,9 +319,11 @@ static void print_advice(void)
                return;
        }
 
-       advise("after resolving the conflicts, mark the corrected paths");
-       advise("with 'git add <paths>' or 'git rm <paths>'");
-       advise("and commit the result with 'git commit'");
+       if (show_hint) {
+               advise("after resolving the conflicts, mark the corrected paths");
+               advise("with 'git add <paths>' or 'git rm <paths>'");
+               advise("and commit the result with 'git commit'");
+       }
 }
 
 static void write_message(struct strbuf *msgbuf, const char *filename)
@@ -566,8 +568,6 @@ static int do_pick_commit(struct commit *commit, struct replay_opts *opts)
                        strbuf_addstr(&msgbuf, sha1_to_hex(commit->object.sha1));
                        strbuf_addstr(&msgbuf, ")\n");
                }
-               if (!opts->no_commit)
-                       write_cherry_pick_head(commit);
        }
 
        if (!opts->strategy || !strcmp(opts->strategy, "recursive") || opts->action == REVERT) {
@@ -588,13 +588,22 @@ static int do_pick_commit(struct commit *commit, struct replay_opts *opts)
                free_commit_list(remotes);
        }
 
+       /*
+        * If the merge was clean or if it failed due to conflict, we write
+        * CHERRY_PICK_HEAD for the subsequent invocation of commit to use.
+        * However, if the merge did not even start, then we don't want to
+        * write it at all.
+        */
+       if (opts->action == CHERRY_PICK && !opts->no_commit && (res == 0 || res == 1))
+               write_cherry_pick_head(commit);
+
        if (res) {
                error(opts->action == REVERT
                      ? _("could not revert %s... %s")
                      : _("could not apply %s... %s"),
                      find_unique_abbrev(commit->object.sha1, DEFAULT_ABBREV),
                      msg.subject);
-               print_advice();
+               print_advice(res == 1);
                rerere(opts->allow_rerere_auto);
        } else {
                if (!opts->no_commit)

diff --git a/t/t3507-cherry-pick-conflict.sh b/t/t3507-cherry-pick-conflict.sh
index 212ec54aaf0d805bbdecd93f3311d248a57d5b08..cb45574a7b5cbdf6da58f609befc4a0bb396db2f 100755 (executable)
--- a/t/t3507-cherry-pick-conflict.sh
+++ b/t/t3507-cherry-pick-conflict.sh
@@ -77,6 +77,21 @@ test_expect_success 'cherry-pick --no-commit does not set CHERRY_PICK_HEAD' '
        test_must_fail git rev-parse --verify CHERRY_PICK_HEAD
 '
 
+test_expect_success 'cherry-pick w/dirty tree does not set CHERRY_PICK_HEAD' '
+       pristine_detach initial &&
+       echo foo > foo &&
+       test_must_fail git cherry-pick base &&
+       test_must_fail git rev-parse --verify CHERRY_PICK_HEAD
+'
+
+test_expect_success \
+       'cherry-pick --strategy=resolve w/dirty tree does not set CHERRY_PICK_HEAD' '
+       pristine_detach initial &&
+       echo foo > foo &&
+       test_must_fail git cherry-pick --strategy=resolve base &&
+       test_must_fail git rev-parse --verify CHERRY_PICK_HEAD
+'
+
 test_expect_success 'GIT_CHERRY_PICK_HELP suppresses CHERRY_PICK_HEAD' '
        pristine_detach initial &&
        (