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[PATCH v2 03/13] pull: cleanup autostash check

From
Felipe Contreras <felipe.contreras@gmail.com>
Date
Dec 18, 2020, 21:10 UTC
Message-ID
<20201218211026.1937168-4-felipe.contreras@gmail.com>
In-Reply-To
<20201218211026.1937168-1-felipe.contreras@gmail.com>

Currently "git pull --rebase" takes a shortcut in the case a fast-forward merge is possible; run_merge() is called with --ff-only.

However, "git merge" didn't have an --autostash option, so, when "git pull --rebase --autostash" was called *and* the fast-forward merge shortcut was taken, then the pull failed.

This was fixed in commit f15e7cf5cc (pull: ff --rebase --autostash works in dirty repo, 2017-06-01) by simply skipping the fast-forward merge shortcut.

Later on "git merge" learned the --autostash option [a03b55530a (merge: teach --autostash option, 2020-04-07)], and so did "git pull" [d9f15d37f1 (pull: pass --autostash to merge, 2020-04-07)].

Therefore it's not necessary to skip the fast-forward merge shortcut anymore when called with --rebase --autostash.

Let's always take the fast-forward merge shortcut by essentially reverting f15e7cf5cc.

Reviewed-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
---
 builtin/pull.c | 16 +++++++---------
 1 file changed, 7 insertions(+), 9 deletions(-)
diff --git a/builtin/pull.c b/builtin/pull.c
index a766d9762c..42cd6c38d8 100644
--- a/builtin/pull.c
+++ b/builtin/pull.c
@@ -949,7 +949,6 @@ int cmd_pull(int argc, const char **argv, const char *prefix)
 	struct oid_array merge_heads = OID_ARRAY_INIT;
 	struct object_id orig_head, curr_head;
 	struct object_id rebase_fork_point;
-	int autostash;
 	int rebase_unspecified = 0;
 	int can_ff;
 
@@ -984,8 +983,8 @@ int cmd_pull(int argc, const char **argv, const char *prefix)
 	if (get_oid("HEAD", &orig_head))
 		oidclr(&orig_head);
 
-	autostash = config_autostash;
 	if (opt_rebase) {
+		int autostash = config_autostash;
 		if (opt_autostash != -1)
 			autostash = opt_autostash;
 
@@ -1067,13 +1066,12 @@ int cmd_pull(int argc, const char **argv, const char *prefix)
 		     recurse_submodules == RECURSE_SUBMODULES_ON_DEMAND) &&
 		    submodule_touches_in_range(the_repository, &upstream, &curr_head))
 			die(_("cannot rebase with locally recorded submodule modifications"));
-		if (!autostash) {
-			if (can_ff) {
-				/* we can fast-forward this without invoking rebase */
-				opt_ff = "--ff-only";
-				ran_ff = 1;
-				ret = run_merge();
-			}
+
+		if (can_ff) {
+			/* we can fast-forward this without invoking rebase */
+			opt_ff = "--ff-only";
+			ran_ff = 1;
+			ret = run_merge();
 		}
 		if (!ran_ff)
 			ret = run_rebase(&newbase, &upstream);
-- 
2.30.0.rc0
Previous: Felipe ContrerasNext: Felipe Contreras
Message 5 of 14 in “pull: pull mode part 2”
  1. 00/13 pull: pull mode part 2Felipe Contreras, Dec 18, 2020
  2. 01/13 doc: pull: explain what is a fast-forwardFelipe Contreras, Dec 18, 2020
  3. 02/13 pull: improve default warningFelipe Contreras, Dec 18, 2020
  4. 04/13 pull: trivial cleanupFelipe Contreras, Dec 18, 2020
  5. 03/13 pull: cleanup autostash checkFelipe Contreras, Dec 18, 2020
  6. 05/13 pull: trivial whitespace style fixFelipe Contreras, Dec 18, 2020
  7. 06/13 pull: introduce --merge optionFelipe Contreras, Dec 18, 2020
  8. 07/13 rebase: add REBASE_DEFAULTFelipe Contreras, Dec 18, 2020
  9. 09/13 pull: show warning with --ff optionsFelipe Contreras, Dec 18, 2020
  10. 08/13 pull: move configurations fetchesFelipe Contreras, Dec 18, 2020
  11. 10/13 pull: add pull.modeFelipe Contreras, Dec 18, 2020
  12. 12/13 pull: reorganize mode conditionalsFelipe Contreras, Dec 18, 2020
  13. 13/13 pull: improve --rebase and pull.rebase interactionFelipe Contreras, Dec 18, 2020
  14. 11/13 pull: add pull.mode=fast-forwardFelipe Contreras, Dec 18, 2020

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