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[PATCH v3 04/16] pull: cleanup autostash check

From
Felipe Contreras <felipe.contreras@gmail.com>
Date
Dec 5, 2020, 19:53 UTC
Message-ID
<20201205195313.1557473-5-felipe.contreras@gmail.com>
In-Reply-To
<20201205195313.1557473-1-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 | 15 ++++++---------
 1 file changed, 6 insertions(+), 9 deletions(-)
diff --git a/builtin/pull.c b/builtin/pull.c
index 7a5b343fe2..d2f80e8615 100644
--- a/builtin/pull.c
+++ b/builtin/pull.c
@@ -927,7 +927,6 @@ 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;
 
 	if (!getenv("GIT_REFLOG_ACTION"))
 		set_reflog_message(argc, argv);
@@ -960,8 +959,8 @@ 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;
 
@@ -1030,13 +1029,11 @@ int cmd_pull(int argc, const char **argv, const char *prefix)
 		     recurse_submodules == RECURSE_SUBMODULES_ON_DEMAND) &&
 		    submodule_touches_in_range(the_repository, &rebase_fork_point, &curr_head))
 			die(_("cannot rebase with locally recorded submodule modifications"));
-		if (!autostash) {
-			if (get_can_ff(&orig_head, &merge_heads.oid[0])) {
-				/* we can fast-forward this without invoking rebase */
-				opt_ff = "--ff-only";
-				ran_ff = 1;
-				ret = run_merge();
-			}
+		if (get_can_ff(&orig_head, &merge_heads.oid[0])) {
+			/* we can fast-forward this without invoking rebase */
+			opt_ff = "--ff-only";
+			ran_ff = 1;
+			ret = run_merge();
 		}
 		if (!ran_ff)
 			ret = run_rebase(&curr_head, merge_heads.oid, &rebase_fork_point);
-- 
2.29.2
Previous: Felipe ContrerasNext: Felipe Contreras
Message 14 of 33 in “pull: default warning improvements”
  1. 00/16 pull: default warning improvementsFelipe Contreras, Dec 5, 2020
  2. 01/16 doc: pull: explain what is a fast-forwardFelipe Contreras, Dec 5, 2020
  3. Junio C HamanoDec 7, 2020
  4. Felipe ContrerasDec 7, 2020
  5. Elijah NewrenDec 7, 2020
  6. Junio C HamanoDec 7, 2020
  7. Felipe ContrerasDec 8, 2020
  8. Felipe ContrerasDec 8, 2020
  9. Elijah NewrenDec 8, 2020
  10. Felipe ContrerasDec 8, 2020
  11. Felipe ContrerasDec 8, 2020
  12. 03/16 pull: refactor fast-forward checkFelipe Contreras, Dec 5, 2020
  13. 05/16 pull: trivial cleanupFelipe Contreras, Dec 5, 2020
  14. 04/16 pull: cleanup autostash checkFelipe Contreras, Dec 5, 2020
  15. 02/16 pull: improve default warningFelipe Contreras, Dec 5, 2020
  16. Junio C HamanoDec 7, 2020
  17. Felipe ContrerasDec 7, 2020
  18. 16/16 pull: trivial memory fixFelipe Contreras, Dec 5, 2020
  19. 14/16 test: merge-pull-config: trivial cleanupFelipe Contreras, Dec 5, 2020
  20. 06/16 pull: move default warningFelipe Contreras, Dec 5, 2020
  21. 08/16 pull: trivial whitespace style fixFelipe Contreras, Dec 5, 2020
  22. 07/16 pull: display default warning only when non-ffFelipe Contreras, Dec 5, 2020
  23. 09/16 pull: introduce --merge optionFelipe Contreras, Dec 5, 2020
  24. 13/16 pull: add proper error with --ff-onlyFelipe Contreras, Dec 5, 2020
  25. Felipe ContrerasDec 5, 2020
  26. 1/2 pull: add proper error with --ff-onlyFelipe Contreras, Dec 5, 2020
  27. 2/2 tentative: pull: change the semantics of --ff-onlyFelipe Contreras, Dec 5, 2020
  28. 12/16 pull: move configurations fetchesFelipe Contreras, Dec 5, 2020
  29. 15/16 test: pull-options: revert unnecessary changesFelipe Contreras, Dec 5, 2020
  30. 10/16 pull: show warning with --ffFelipe Contreras, Dec 5, 2020
  31. 11/16 rebase: add REBASE_DEFAULTFelipe Contreras, Dec 5, 2020
  32. Junio C HamanoDec 7, 2020
  33. Felipe ContrerasDec 7, 2020

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