[PATCH v7 4/5] pull: correct condition to trigger non-ff advice

[Junio C Hamano <gitster@pobox.com>]

Refactor the advise() call that teaches users how they can choose
between merge and rebase into a helper function.  This revealed that
the caller's logic needs to be further clarified to allow future
actions (like "erroring out" instead of the current "go ahead and
merge anyway") that should happen whether the advice message is
squelched out.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
---
 builtin/pull.c | 32 +++++++++++++++++++-------------
 1 file changed, 19 insertions(+), 13 deletions(-)

diff --git a/builtin/pull.c b/builtin/pull.c
index 2976b8e5cb..1b87ea95eb 100644
--- a/builtin/pull.c
+++ b/builtin/pull.c
@@ -925,6 +925,22 @@ static int get_can_ff(struct object_id *orig_head, struct object_id *orig_merge_
 	return ret;
 }
 
+static void show_advice_pull_non_ff(void)
+{
+	advise(_("Pulling without specifying how to reconcile divergent branches is\n"
+		 "discouraged. You can squelch this message by running one of the following\n"
+		 "commands sometime before your next pull:\n"
+		 "\n"
+		 "  git config pull.rebase false  # merge (the default strategy)\n"
+		 "  git config pull.rebase true   # rebase\n"
+		 "  git config pull.ff only       # fast-forward only\n"
+		 "\n"
+		 "You can replace \"git config\" with \"git config --global\" to set a default\n"
+		 "preference for all repositories. You can also pass --rebase, --no-rebase,\n"
+		 "or --ff-only on the command line to override the configured default per\n"
+		 "invocation.\n"));
+}
+
 int cmd_pull(int argc, const char **argv, const char *prefix)
 {
 	const char *repo, **refspecs;
@@ -1028,19 +1044,9 @@ int cmd_pull(int argc, const char **argv, const char *prefix)
 	if (opt_rebase && merge_heads.nr > 1)
 		die(_("Cannot rebase onto multiple branches."));
 
-	if (rebase_unspecified && opt_verbosity >= 0 && !opt_ff) {
-		advise(_("Pulling without specifying how to reconcile divergent branches is\n"
-			 "discouraged. You can squelch this message by running one of the following\n"
-			 "commands sometime before your next pull:\n"
-			 "\n"
-			 "  git config pull.rebase false  # merge (the default strategy)\n"
-			 "  git config pull.rebase true   # rebase\n"
-			 "  git config pull.ff only       # fast-forward only\n"
-			 "\n"
-			 "You can replace \"git config\" with \"git config --global\" to set a default\n"
-			 "preference for all repositories. You can also pass --rebase, --no-rebase,\n"
-			 "or --ff-only on the command line to override the configured default per\n"
-			 "invocation.\n"));
+	if (rebase_unspecified && !opt_ff) {
+		if (opt_verbosity >= 0)
+			show_advice_pull_non_ff();
 	}
 
 	if (opt_rebase) {
-- 
2.30.0-rc0-186-g20447144ec