Merge branch 'jk/empty-pick-fix'

Handling of an empty range by "git cherry-pick" was inconsistent
depending on how the range ended up to be empty, which has been
corrected.

* jk/empty-pick-fix:
sequencer: don't say BUG on bogus input
sequencer: handle empty-set cases consistently

diff --git a/sequencer.c b/sequencer.c
index 349ae04ffd66968a0641ca04508eceea0c8a2b8b..b89d5f2e34f960fc8d171ecb4862a65e841221de 100644 (file)
--- a/sequencer.c
+++ b/sequencer.c
@@ -1864,8 +1864,6 @@ static int prepare_revs(struct replay_opts *opts)
        if (prepare_revision_walk(opts->revs))
                return error(_("revision walk setup failed"));
 
-       if (!opts->revs->commits)
-               return error(_("empty commit set passed"));
        return 0;
 }
 
@@ -2323,6 +2321,10 @@ static int walk_revs_populate_todo(struct todo_list *todo_list,
                        short_commit_name(commit), subject_len, subject);
                unuse_commit_buffer(commit, commit_buffer);
        }
+
+       if (!todo_list->nr)
+               return error(_("empty commit set passed"));
+
        return 0;
 }
 
@@ -3658,8 +3660,10 @@ int sequencer_pick_revisions(struct replay_opts *opts)
                if (prepare_revision_walk(opts->revs))
                        return error(_("revision walk setup failed"));
                cmit = get_revision(opts->revs);
-               if (!cmit || get_revision(opts->revs))
-                       return error("BUG: expected exactly one commit from walk");
+               if (!cmit)
+                       return error(_("empty commit set passed"));
+               if (get_revision(opts->revs))
+                       BUG("unexpected extra commit from walk");
                return single_pick(cmit, opts);
        }
 

diff --git a/t/t3510-cherry-pick-sequence.sh b/t/t3510-cherry-pick-sequence.sh
index b42cd66d3a574138148a311b34472506b433c286..3505b6aa14e630a98062558ed30270c98e5a920f 100755 (executable)
--- a/t/t3510-cherry-pick-sequence.sh
+++ b/t/t3510-cherry-pick-sequence.sh
@@ -480,11 +480,16 @@ test_expect_success 'malformed instruction sheet 2' '
        test_expect_code 128 git cherry-pick --continue
 '
 
-test_expect_success 'empty commit set' '
+test_expect_success 'empty commit set (no commits to walk)' '
        pristine_detach initial &&
        test_expect_code 128 git cherry-pick base..base
 '
 
+test_expect_success 'empty commit set (culled during walk)' '
+       pristine_detach initial &&
+       test_expect_code 128 git cherry-pick -2 --author=no.such.author base
+'
+
 test_expect_success 'malformed instruction sheet 3' '
        pristine_detach initial &&
        test_expect_code 1 git cherry-pick base..anotherpick &&