[PATCH] remote: qualify "git pull" advice for non-upstream branches

["Harald Nordgren via GitGitGadget" <gitgitgadget@gmail.com>]

From: Harald Nordgren <haraldnordgren@gmail.com>

When "git status" reports the local branch is behind or has diverged
from the push branch, the advice suggested a bare "git pull". That
follows the upstream, which may live on a different remote, so emit
"git pull <remote> <branch>" instead.

Also enable the pull and divergence advice for push-branch
comparisons; they were previously only set for the upstream.

Signed-off-by: Harald Nordgren <haraldnordgren@gmail.com>
---
    remote: qualify "git pull" advice for non-upstream branches

Published-As: https://github.com/gitgitgadget/git/releases/tag/pr-git-2301%2FHaraldNordgren%2Fstatus-pull-advice-qualified-v1
Fetch-It-Via: git fetch https://github.com/gitgitgadget/git pr-git-2301/HaraldNordgren/status-pull-advice-qualified-v1
Pull-Request: https://github.com/git/git/pull/2301

 remote.c                 | 47 +++++++++++++++++++++++++++++++---------
 t/t6040-tracking-info.sh | 41 +++++++++++++++++++++++++++++++++++
 2 files changed, 78 insertions(+), 10 deletions(-)

diff --git a/remote.c b/remote.c
index a664cd166a..d1e09079cb 100644
--- a/remote.c
+++ b/remote.c
@@ -2267,6 +2267,8 @@ static void format_branch_comparison(struct strbuf *sb,
 				     bool up_to_date,
 				     int ours, int theirs,
 				     const char *branch_name,
+				     const char *push_remote_name,
+				     const char *push_branch_name,
 				     enum ahead_behind_flags abf,
 				     unsigned flags)
 {
@@ -2302,9 +2304,15 @@ static void format_branch_comparison(struct strbuf *sb,
 			       "and can be fast-forwarded.\n",
 			   theirs),
 			branch_name, theirs);
-		if (use_pull_advice && advice_enabled(ADVICE_STATUS_HINTS))
-			strbuf_addstr(sb,
-				_("  (use \"git pull\" to update your local branch)\n"));
+		if (use_pull_advice && advice_enabled(ADVICE_STATUS_HINTS)) {
+			if (push_remote_name && push_branch_name)
+				strbuf_addf(sb,
+					_("  (use \"git pull %s %s\" to update your local branch)\n"),
+					push_remote_name, push_branch_name);
+			else
+				strbuf_addstr(sb,
+					_("  (use \"git pull\" to update your local branch)\n"));
+		}
 	} else {
 		strbuf_addf(sb,
 			Q_("Your branch and '%s' have diverged,\n"
@@ -2315,9 +2323,15 @@ static void format_branch_comparison(struct strbuf *sb,
 			       "respectively.\n",
 			   ours + theirs),
 			branch_name, ours, theirs);
-		if (use_divergence_advice && advice_enabled(ADVICE_STATUS_HINTS))
-			strbuf_addstr(sb,
-				_("  (use \"git pull\" if you want to integrate the remote branch with yours)\n"));
+		if (use_divergence_advice && advice_enabled(ADVICE_STATUS_HINTS)) {
+			if (push_remote_name && push_branch_name)
+				strbuf_addf(sb,
+					_("  (use \"git pull %s %s\" if you want to integrate the remote branch with yours)\n"),
+					push_remote_name, push_branch_name);
+			else
+				strbuf_addstr(sb,
+					_("  (use \"git pull\" if you want to integrate the remote branch with yours)\n"));
+		}
 	}
 }
 
@@ -2355,6 +2369,8 @@ int format_tracking_info(struct branch *branch, struct strbuf *sb,
 		int ours, theirs, cmp;
 		int is_upstream, is_push;
 		unsigned flags = 0;
+		const char *push_remote_name = NULL;
+		const char *push_branch_name = NULL;
 
 		full_ref = resolve_compare_branch(branch,
 						  branches.items[i].string);
@@ -2396,13 +2412,24 @@ int format_tracking_info(struct branch *branch, struct strbuf *sb,
 		if (reported)
 			strbuf_addstr(sb, "\n");
 
-		if (is_upstream)
+		if (is_upstream || is_push) {
 			flags |= ENABLE_ADVICE_PULL;
-		if (is_push)
+			if (show_divergence_advice)
+				flags |= ENABLE_ADVICE_DIVERGENCE;
+		}
+		if (is_push) {
 			flags |= ENABLE_ADVICE_PUSH;
-		if (show_divergence_advice && is_upstream)
-			flags |= ENABLE_ADVICE_DIVERGENCE;
+			push_remote_name = pushremote_for_branch(branch, NULL);
+			if (push_remote_name &&
+			    skip_prefix(full_ref, "refs/remotes/", &push_branch_name) &&
+			    skip_prefix(push_branch_name, push_remote_name, &push_branch_name) &&
+			    *push_branch_name == '/')
+				push_branch_name++;
+			else
+				push_remote_name = NULL;
+		}
 		format_branch_comparison(sb, !cmp, ours, theirs, short_ref,
+					 push_remote_name, push_branch_name,
 					 abf, flags);
 		reported = 1;
 
diff --git a/t/t6040-tracking-info.sh b/t/t6040-tracking-info.sh
index 0242b5bf7a..3199063762 100755
--- a/t/t6040-tracking-info.sh
+++ b/t/t6040-tracking-info.sh
@@ -529,6 +529,7 @@ test_expect_success 'status.compareBranches with diverged push branch' '
 
 	Your branch and ${SQ}origin/feature8${SQ} have diverged,
 	and have 1 and 1 different commits each, respectively.
+	  (use "git pull origin feature8" if you want to integrate the remote branch with yours)
 
 	nothing to commit, working tree clean
 	EOF
@@ -646,4 +647,44 @@ test_expect_success 'status.compareBranches with remapped push and upstream remo
 	test_cmp expect actual
 '
 
+test_expect_success 'status.compareBranches with behind push branch suggests qualified pull' '
+	test_config -C test push.default current &&
+	test_config -C test remote.pushDefault origin &&
+	test_config -C test status.compareBranches "@{upstream} @{push}" &&
+	git -C test checkout -b feature13 upstream/main &&
+	(cd test && advance work13) &&
+	git -C test push origin &&
+	git -C test reset --hard HEAD^ &&
+	git -C test status >actual &&
+	cat >expect <<-EOF &&
+	On branch feature13
+	Your branch is up to date with ${SQ}upstream/main${SQ}.
+
+	Your branch is behind ${SQ}origin/feature13${SQ} by 1 commit, and can be fast-forwarded.
+	  (use "git pull origin feature13" to update your local branch)
+
+	nothing to commit, working tree clean
+	EOF
+	test_cmp expect actual
+'
+
+test_expect_success 'status.compareBranches with remapped push and behind push branch' '
+	test_config -C test remote.pushDefault origin &&
+	test_config -C test remote.origin.push refs/heads/feature14:refs/heads/remapped14 &&
+	test_config -C test status.compareBranches "@{push}" &&
+	git -C test checkout -b feature14 upstream/main &&
+	(cd test && advance work14) &&
+	git -C test push &&
+	git -C test reset --hard HEAD^ &&
+	git -C test status >actual &&
+	cat >expect <<-EOF &&
+	On branch feature14
+	Your branch is behind ${SQ}origin/remapped14${SQ} by 1 commit, and can be fast-forwarded.
+	  (use "git pull origin remapped14" to update your local branch)
+
+	nothing to commit, working tree clean
+	EOF
+	test_cmp expect actual
+'
+
 test_done

base-commit: 29bd7ed5127255713c1ac2f43b7c6f257d7b4594
-- 
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