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[PATCH v2 3/3] branch: rename orphan branches in any worktree

From
Rubén Justo <rjusto@gmail.com>
Date
Jan 16, 2023, 00:06 UTC
Message-ID
<4601f80b-e504-c5a2-6374-7a2609236a27@gmail.com>
In-Reply-To
<34a58449-4f2e-66ef-ea01-119186aebd23@gmail.com>

In cfaff3aac (branch -m: allow renaming a yet-unborn branch, 2020-12-13) we added support for renaming an orphan branch, skipping rename_ref() if the branch to rename is an orphan branch, checking the current HEAD.

But the orphan branch to be renamed can be an orphan branch in a different working tree than the current one, i.e. not the current HEAD.

Let's make "ishead_reject_rebase_or_bisect_branch()" return a flag indicating if the returned value refers to an orphan branch, and use it to extend what we did in cfaff3aac, to all HEADs in the repository.

Signed-off-by: Rubén Justo <rjusto@gmail.com>
---
 builtin/branch.c  |  5 ++---
 t/t3200-branch.sh | 16 ++++++++++++++++
 2 files changed, 18 insertions(+), 3 deletions(-)
diff --git a/builtin/branch.c b/builtin/branch.c
index 6bb5f50950..7e6baa291a 100644
--- a/builtin/branch.c
+++ b/builtin/branch.c
@@ -495,7 +495,7 @@ static int ishead_and_reject_rebase_or_bisect_branch(const char *target)
 		struct worktree *wt = worktrees[i];
 
 		if (wt->head_ref && !strcmp(target, wt->head_ref))
-			ret = 1;
+			ret = 1 + (is_null_oid(&wt->head_oid) ? 1 : 0);
 
 		if (!wt->is_detached)
 			continue;
@@ -560,8 +560,7 @@ static void copy_or_rename_branch(const char *oldname, const char *newname, int
 		strbuf_addf(&logmsg, "Branch: renamed %s to %s",
 			    oldref.buf, newref.buf);
 
-	if (!copy &&
-	    (!head || strcmp(oldname, head) || !is_null_oid(&head_oid)) &&
+	if (!copy && !(ishead > 1) &&
 	    rename_ref(oldref.buf, newref.buf, logmsg.buf))
 		die(_("Branch rename failed"));
 	if (copy && copy_existing_ref(oldref.buf, newref.buf, logmsg.buf))
diff --git a/t/t3200-branch.sh b/t/t3200-branch.sh
index 5a169b68d6..966583dc7d 100755
--- a/t/t3200-branch.sh
+++ b/t/t3200-branch.sh
@@ -279,6 +279,22 @@ test_expect_success 'git branch -M and -C fail on detached HEAD' '
 	test_cmp expect err
 '
 
+test_expect_success 'git branch -m should work with orphan branches' '
+	test_when_finished git checkout - &&
+	test_when_finished git worktree remove -f wt &&
+	git worktree add wt --detach &&
+
+	# rename orphan in another worktreee
+	git -C wt checkout --orphan orphan-foo-wt &&
+	git branch -m orphan-foo-wt orphan-bar-wt &&
+	test orphan-bar-wt=$(git -C orphan-worktree branch --show-current) &&
+
+	# rename orphan in the current worktree
+	git checkout --orphan orphan-foo &&
+	git branch -m orphan-foo orphan-bar &&
+	test orphan-bar=$(git branch --show-current)
+'
+
 test_expect_success 'git branch -d on orphan HEAD (merged)' '
 	test_when_finished git checkout main &&
 	git checkout --orphan orphan &&
-- 
2.39.0
Previous: Rubén JustoNext: Rubén Justo
Message 19 of 49 in “branch: operations on orphan branches”
  1. 0/2 branch: operations on orphan branchesRubén Justo, Dec 30, 2022
  2. 1/2 branch: description for orphan branch errorsRubén Justo, Dec 30, 2022
  3. Junio C HamanoJan 1, 2023
  4. Rubén JustoJan 3, 2023
  5. Junio C HamanoJan 4, 2023
  6. Rubén JustoJan 6, 2023
  7. Junio C HamanoJan 6, 2023
  8. Rubén JustoJan 7, 2023
  9. Junio C HamanoJan 7, 2023
  10. 2/2 branch: rename orphan branches in any worktreeRubén Justo, Dec 30, 2022
  11. 0/3 branch: operations on orphan branchesRubén Justo, Jan 15, 2023
  12. 1/3 avoid unnecessary worktrees traversingRubén Justo, Jan 16, 2023
  13. Junio C HamanoJan 19, 2023
  14. Rubén JustoJan 19, 2023
  15. 2/3 branch: description for orphan branch errorsRubén Justo, Jan 16, 2023
  16. 3/3 branch: rename orphan branches in any worktreeRubén Justo, Jan 16, 2023
  17. Junio C HamanoJan 19, 2023
  18. Rubén JustoJan 19, 2023
  19. 3/3 branch: rename orphan branches in any worktreeRubén Justo, Jan 16, 2023
  20. 0/3 branch: operations on orphan branchesRubén Justo, Feb 6, 2023
  21. 1/3 branch: avoid unnecessary worktrees traversalsRubén Justo, Feb 6, 2023
  22. Jonathan TanFeb 11, 2023
  23. Rubén JustoFeb 15, 2023
  24. 2/3 branch: description for orphan branch errorsRubén Justo, Feb 6, 2023
  25. 3/3 branch: rename orphan branches in any worktreeRubén Justo, Feb 6, 2023
  26. Junio C HamanoFeb 7, 2023
  27. Ævar Arnfjörð BjarmasonFeb 7, 2023
  28. Rubén JustoFeb 8, 2023
  29. Junio C HamanoFeb 8, 2023
  30. 0/3 branch: operations on orphan branchesRubén Justo, Feb 22, 2023
  31. 1/3 branch: avoid unnecessary worktrees traversalsRubén Justo, Feb 22, 2023
  32. Rubén JustoFeb 25, 2023
  33. Jonathan TanFeb 27, 2023
  34. Rubén JustoFeb 28, 2023
  35. 2/3 branch: description for orphan branch errorsRubén Justo, Feb 22, 2023
  36. Jonathan TanFeb 27, 2023
  37. Junio C HamanoFeb 27, 2023
  38. Rubén JustoFeb 28, 2023
  39. 3/3 branch: rename orphan branches in any worktreeRubén Justo, Feb 22, 2023
  40. Jonathan TanFeb 27, 2023
  41. Rubén JustoFeb 28, 2023
  42. 0/5 branch: operations on orphan branchesRubén Justo, Mar 26, 2023
  43. 1/5 branch: test for failures while renaming branchesRubén Justo, Mar 26, 2023
  44. 2/5 branch: use get_worktrees() in copy_or_rename_branch()Rubén Justo, Mar 26, 2023
  45. 3/5 branch: description for orphan branch errorsRubén Justo, Mar 26, 2023
  46. 4/5 branch: rename orphan branches in any worktreeRubén Justo, Mar 26, 2023
  47. 5/5 branch: avoid unnecessary worktrees traversalsRubén Justo, Mar 26, 2023
  48. Junio C HamanoMar 27, 2023
  49. Junio C HamanoMay 1, 2023

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