Subject: [GSoC][PATCH v2 3/3] cherry-pick/revert: advise using --skip

From: Rohit Ashiwal <[email-masked]>
Date: Tue, 11 Jun 2019 13:01:52 +0530

The previous commit introduced a --skip flag for cherry-pick and
revert. Update the advice messages, to tell users about this less
cumbersome way of skipping commits. Also add tests to ensure
everything is working fine.

Signed-off-by: Rohit Ashiwal <[email-masked]>
---
changes since last revision:
    - selectively advice --skip
    - add new test

 builtin/commit.c                | 13 ++++++++-----
 sequencer.c                     |  7 +++++--
 t/t3510-cherry-pick-sequence.sh | 20 ++++++++++++++++++++
 3 files changed, 33 insertions(+), 7 deletions(-)

diff --git a/builtin/commit.c b/builtin/commit.c
index 1c9e8e2228..1f47c51bdc 100644
--- a/builtin/commit.c
+++ b/builtin/commit.c
@@ -60,15 +60,18 @@ N_("The previous cherry-pick is now empty, possibly due to conflict resolution.\
 "\n");
 
 static const char empty_cherry_pick_advice_single[] =
-N_("Otherwise, please use 'git reset'\n");
+N_("Otherwise, please use 'git cherry-pick --skip'\n");
 
 static const char empty_cherry_pick_advice_multi[] =
-N_("If you wish to skip this commit, use:\n"
+N_("and then use:\n"
 "\n"
-"    git reset\n"
+"    git cherry-pick --continue\n"
 "\n"
-"Then \"git cherry-pick --continue\" will resume cherry-picking\n"
-"the remaining commits.\n");
+"to resume cherry-picking the remaining commits.\n"
+"If you wish to skip this commit, use:\n"
+"\n"
+"    git cherry-pick --skip\n"
+"\n");
 
 static const char *color_status_slots[] = {
 	[WT_STATUS_HEADER]	  = "header",
diff --git a/sequencer.c b/sequencer.c
index 93284cd7dd..ecf4be7e15 100644
--- a/sequencer.c
+++ b/sequencer.c
@@ -2661,10 +2661,13 @@ static int create_seq_dir(struct repository *r)
 			error(_("a %s is already in progress"),
 				 action == REPLAY_REVERT ?
 				 "revert" : "cherry-pick");
-			advise(_("try \"git %s (--continue | "
+			advise(_("try \"git %s (--continue | %s"
 				 "--quit | --abort)\""),
 				 action == REPLAY_REVERT ?
-				 "revert" : "cherry-pick");
+				 "revert" : "cherry-pick",
+				 !file_exists(git_path_revert_head(r)) ?
+				 !file_exists(git_path_cherry_pick_head(r)) ? ""
+				 : "--skip | " : "--skip | ");
 			return -1;
 		default:
 			BUG(_("the control must not reach here"));
diff --git a/t/t3510-cherry-pick-sequence.sh b/t/t3510-cherry-pick-sequence.sh
index 6c1903a735..f298f02cd0 100755
--- a/t/t3510-cherry-pick-sequence.sh
+++ b/t/t3510-cherry-pick-sequence.sh
@@ -172,6 +172,26 @@ test_expect_success 'check advice when we move HEAD by committing' '
 	test_cmp expect advice
 '
 
+test_expect_success 'selectively advise --skip while launching another sequence' '
+	pristine_detach initial &&
+	cat >expect <<-EOF &&
+	error: a cherry-pick is already in progress
+	hint: try "git cherry-pick (--continue | --skip | --quit | --abort)"
+	fatal: cherry-pick failed
+	EOF
+	test_must_fail git cherry-pick picked..yetanotherpick &&
+	test_must_fail git cherry-pick picked..yetanotherpick 2>advice &&
+	test_cmp expect advice &&
+	cat >expect <<-EOF &&
+	error: a cherry-pick is already in progress
+	hint: try "git cherry-pick (--continue | --quit | --abort)"
+	fatal: cherry-pick failed
+	EOF
+	git reset --merge &&
+	test_must_fail git cherry-pick picked..yetanotherpick 2>advice &&
+	test_cmp expect advice
+'
+
 test_expect_success 'allow skipping commit but not abort for a new history' '
 	pristine_detach initial &&
 	cat >expect <<-EOF &&
-- 
2.21.0