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Mon, 02 Nov 2026 10:29:40 -0800 (PST) Received: from remus.wildebeest-stargazer.ts.net ([69.43.66.31]) by smtp.gmail.com with ESMTPSA id d75a77b69052e-5498b49ce29sm4346221cf.4.2026.11.02.10.29.39 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 02 Nov 2026 10:29:39 -0800 (PST) From: Jasper Mayone To: git@vger.kernel.org Cc: gitster@pobox.com, phillip.wood123@gmail.com, sunshine@sunshineco.com, kristofferhaugsbakk@fastmail.com, ben.knoble@gmail.com, haraldnordgren@gmail.com, Jasper Mayone Subject: [PATCH v4 3/4] ref-filter: name the worktree of a branch being rebased or bisected Date: Mon, 2 Nov 2026 13:29:29 -0500 Message-ID: <20261102182930.3511-4-me@jaspermayone.com> X-Mailer: git-send-email 2.56.0 In-Reply-To: <20261102182930.3511-1-me@jaspermayone.com> References: <20261030142137.54750-1-me@jaspermayone.com> <20261102182930.3511-1-me@jaspermayone.com> X-Mailing-List: git@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit %(worktreepath) gives the worktree that has a branch checked out, and "git branch" uses it to mark such branches with "+". It only looks at the HEAD of each worktree, so while a worktree is rebasing or bisecting a branch, its HEAD is detached and the branch shows no worktree at all. The rest of Git already treats that branch as checked out: "git worktree add" and "git branch -d" refuse it, because finishing the rebase or bisect will check it out again. But no command shows which worktree is working on the branch: "git worktree list" shows such a worktree as "(detached HEAD)", and %(worktreepath) is empty. branch.c already knows the answer, as prepare_checked_out_branches() records the branch that each worktree has checked out, is rebasing or is bisecting. Add branch_checked_out_worktree() to look a branch up in that list, and use it for %(worktreepath) in place of the map that ref-filter.c builds from the HEAD of each worktree. The new function skips the branches that "rebase --update-refs" will update. branch_checked_out() includes them, so that they cannot be checked out or deleted during the rebase, but the worktree that runs the rebase has not checked them out. %(worktreepath) therefore stays empty for them, unlike branch_checked_out(). This also changes the result for a bare repository: its HEAD names a branch, and %(worktreepath) used to give the path of the bare repository for that branch. "git branch" in a linked worktree marked the branch with "+", although no worktree has it checked out and "git worktree add" lets you check it out. prepare_checked_out_branches() skips bare repositories, so %(worktreepath) is now empty for that branch and "git branch" no longer marks it. Reported-by: Kristoffer Haugsbakk Helped-by: Phillip Wood Signed-off-by: Jasper Mayone --- Documentation/git-branch.adoc | 6 ++- Documentation/git-for-each-ref.adoc | 5 +- branch.c | 13 +++++ branch.h | 9 ++++ ref-filter.c | 74 ++-------------------------- t/t3203-branch-output.sh | 29 +++++++++++ t/t6302-for-each-ref-filter.sh | 76 +++++++++++++++++++++++++++++ 7 files changed, 138 insertions(+), 74 deletions(-) diff --git a/Documentation/git-branch.adoc b/Documentation/git-branch.adoc index bfdf459329..510b0afc74 100644 --- a/Documentation/git-branch.adoc +++ b/Documentation/git-branch.adoc @@ -33,8 +33,10 @@ DESCRIPTION If `--list` is given, or if there are no non-option arguments, existing branches are listed; the current branch will be highlighted in green and marked with an asterisk. Any branches checked out in linked worktrees will -be highlighted in cyan and marked with a plus sign. Option `-r` causes the -remote-tracking branches to be listed, +be highlighted in cyan and marked with a plus sign. A branch that a +worktree is rebasing or bisecting counts as checked out in that +worktree, so the other worktrees mark it in the same way. Option `-r` +causes the remote-tracking branches to be listed, and option `-a` shows both local and remote branches. If a `` diff --git a/Documentation/git-for-each-ref.adoc b/Documentation/git-for-each-ref.adoc index 9247737aa7..4456b4809a 100644 --- a/Documentation/git-for-each-ref.adoc +++ b/Documentation/git-for-each-ref.adoc @@ -182,7 +182,10 @@ but if used together the last option is selected. `worktreepath`:: The absolute path to the worktree in which the ref is checked - out, if it is checked out in any linked worktree. Empty string + out, if it is checked out in any linked worktree. A branch that + a worktree is rebasing or bisecting counts as checked out there, + although that worktree's `HEAD` is detached. A branch that + `git rebase --update-refs` will update does not. Empty string otherwise. If the ref is checked out in more than one worktree, only one of them is shown. The path can contain a newline, so use one of the quoting options such as `--shell`, or follow diff --git a/branch.c b/branch.c index 5bb1c28915..8dab72d857 100644 --- a/branch.c +++ b/branch.c @@ -485,6 +485,19 @@ const char *branch_checked_out(const char *refname) return strmap_get(¤t_checked_out_branches, refname); } +const char *branch_checked_out_worktree(const char *refname) +{ + const char *path = NULL; + + prepare_checked_out_branches(); + for (size_t i = 0; i < checked_out_branches_nr; i++) { + if (checked_out_branches[i].kind != BRANCH_CHECKOUT_KIND_UPDATE_REF && + !strcmp(refname, checked_out_branches[i].refname)) + path = checked_out_branches[i].path; + } + return path; +} + const char *branch_bisecting(const char *refname) { prepare_checked_out_branches(); diff --git a/branch.h b/branch.h index 95b2431f24..60cb92a3e4 100644 --- a/branch.h +++ b/branch.h @@ -106,6 +106,15 @@ void create_branches_recursively(struct repository *r, const char *name, */ const char *branch_checked_out(const char *refname); +/* + * If a worktree has the branch 'refname' checked out, or is rebasing or + * bisecting it, return the path of that worktree, or of the last one if + * there are more. Otherwise return NULL. Unlike branch_checked_out(), + * this ignores the branches that "git rebase --update-refs" will + * update, because no worktree has them checked out. + */ +const char *branch_checked_out_worktree(const char *refname); + /* * If the branch at 'refname' is currently used for bisecting in a * worktree, then return the path to that worktree. diff --git a/ref-filter.c b/ref-filter.c index bdf54f6f59..b636e56199 100644 --- a/ref-filter.c +++ b/ref-filter.c @@ -2,6 +2,7 @@ #define DISABLE_SIGN_COMPARE_WARNINGS #include "git-compat-util.h" +#include "branch.h" #include "environment.h" #include "gettext.h" #include "config.h" @@ -95,30 +96,6 @@ static struct expand_data { struct object_info info; } oi, oi_deref; -struct ref_to_worktree_entry { - struct hashmap_entry ent; - struct worktree *wt; /* key is wt->head_ref */ -}; - -static int ref_to_worktree_map_cmpfnc(const void *lookupdata UNUSED, - const struct hashmap_entry *eptr, - const struct hashmap_entry *kptr, - const void *keydata_aka_refname) -{ - const struct ref_to_worktree_entry *e, *k; - - e = container_of(eptr, const struct ref_to_worktree_entry, ent); - k = container_of(kptr, const struct ref_to_worktree_entry, ent); - - return strcmp(e->wt->head_ref, - keydata_aka_refname ? keydata_aka_refname : k->wt->head_ref); -} - -static struct ref_to_worktree_map { - struct hashmap map; - struct worktree **worktrees; -} ref_to_worktree_map; - /* * The enum atom_type is used as the index of valid_atom array. * In the atom parsing stage, it will be passed to used_atom.atom_type @@ -2380,49 +2357,11 @@ static int get_object(struct ref_array_item *ref, int deref, return ret; } -static void populate_worktree_map(struct hashmap *map, struct worktree **worktrees) -{ - int i; - - for (i = 0; worktrees[i]; i++) { - if (worktrees[i]->head_ref) { - struct ref_to_worktree_entry *entry; - entry = xmalloc(sizeof(*entry)); - entry->wt = worktrees[i]; - hashmap_entry_init(&entry->ent, - strhash(worktrees[i]->head_ref)); - - hashmap_add(map, &entry->ent); - } - } -} - -static void lazy_init_worktree_map(void) -{ - if (ref_to_worktree_map.worktrees) - return; - - ref_to_worktree_map.worktrees = get_worktrees(the_repository); - hashmap_init(&(ref_to_worktree_map.map), ref_to_worktree_map_cmpfnc, NULL, 0); - populate_worktree_map(&(ref_to_worktree_map.map), ref_to_worktree_map.worktrees); -} - static char *get_worktree_path(const struct ref_array_item *ref) { - struct hashmap_entry entry, *e; - struct ref_to_worktree_entry *lookup_result; + const char *path = branch_checked_out_worktree(ref->refname); - lazy_init_worktree_map(); - - hashmap_entry_init(&entry, strhash(ref->refname)); - e = hashmap_get(&(ref_to_worktree_map.map), &entry, ref->refname); - - if (!e) - return xstrdup(""); - - lookup_result = container_of(e, struct ref_to_worktree_entry, ent); - - return xstrdup(lookup_result->wt->path); + return xstrdup(path ? path : ""); } /* @@ -3195,13 +3134,6 @@ void ref_array_clear(struct ref_array *array) FREE_AND_NULL(used_atom); used_atom_cnt = 0; - if (ref_to_worktree_map.worktrees) { - hashmap_clear_and_free(&(ref_to_worktree_map.map), - struct ref_to_worktree_entry, ent); - free_worktrees(ref_to_worktree_map.worktrees); - ref_to_worktree_map.worktrees = NULL; - } - FREE_AND_NULL(array->counts); } diff --git a/t/t3203-branch-output.sh b/t/t3203-branch-output.sh index 7c44186341..debfac5f26 100755 --- a/t/t3203-branch-output.sh +++ b/t/t3203-branch-output.sh @@ -442,6 +442,35 @@ test_expect_success 'worktree colors correct' ' test_cmp expect actual ' +test_expect_success 'branch being rebased in a worktree is marked' ' + test_when_finished "git -C rebase_dir rebase --abort; rm -rf rebase_dir; git worktree prune; git branch -D rebasing" && + git worktree add -b rebasing rebase_dir branch-two && + ( + cd rebase_dir && + git commit --allow-empty -m rebase-me && + test_must_fail git rebase -f -x false HEAD~1 && + test_must_fail git symbolic-ref -q HEAD + ) && + git branch --list rebasing >actual && + echo "+ rebasing" >expect && + test_cmp expect actual +' + +test_expect_success 'branch being bisected in a worktree is marked' ' + test_when_finished "git -C bisect_dir bisect reset; rm -rf bisect_dir; git worktree prune; git branch -D bisecting" && + git worktree add -b bisecting bisect_dir branch-two && + ( + cd bisect_dir && + git commit --allow-empty -m bisect-one && + git commit --allow-empty -m bisect-two && + git bisect start HEAD HEAD~2 && + test_must_fail git symbolic-ref -q HEAD + ) && + git branch --list bisecting >actual && + echo "+ bisecting" >expect && + test_cmp expect actual +' + test_expect_success "set up color tests" ' echo "main" >expect.color && echo "main" >expect.bare && diff --git a/t/t6302-for-each-ref-filter.sh b/t/t6302-for-each-ref-filter.sh index 7f060d97bf..317ed6f6cd 100755 --- a/t/t6302-for-each-ref-filter.sh +++ b/t/t6302-for-each-ref-filter.sh @@ -3,6 +3,7 @@ test_description='test for-each-refs usage of ref-filter APIs' . ./test-lib.sh +. "$TEST_DIRECTORY"/lib-rebase.sh . "$TEST_DIRECTORY"/lib-gpg.sh test_expect_success 'setup some history and refs' ' @@ -541,6 +542,81 @@ test_expect_success 'validate worktree atom' ' test_cmp expect actual ' +test_expect_success 'worktree atom names a worktree rebasing the branch' ' + test_when_finished "git -C rebasing rebase --abort; rm -rf rebasing; git worktree prune; git branch -D rebasing" && + git worktree add -b rebasing rebasing main && + git -C rebasing commit --allow-empty -m rebase-me && + test_must_fail git -C rebasing rebase -f -x false main && + test_must_fail git -C rebasing symbolic-ref -q HEAD && + echo "$(pwd)/rebasing" >expect && + git for-each-ref --format="%(worktreepath)" refs/heads/rebasing >actual && + test_cmp expect actual +' + +test_expect_success 'worktree atom names a worktree bisecting the branch' ' + test_when_finished "git -C bisecting bisect reset; rm -rf bisecting; git worktree prune; git branch -D bisecting" && + git worktree add -b bisecting bisecting main && + git -C bisecting commit --allow-empty -m bisect-one && + git -C bisecting commit --allow-empty -m bisect-two && + git -C bisecting bisect start HEAD main && + test_must_fail git -C bisecting symbolic-ref -q HEAD && + echo "$(pwd)/bisecting" >expect && + git for-each-ref --format="%(worktreepath)" refs/heads/bisecting >actual && + test_cmp expect actual +' + +test_expect_success 'worktree atom with an interactive rebase stopped at edit' ' + test_when_finished "git -C editing rebase --abort; rm -rf editing; git worktree prune; git branch -D editing" && + git worktree add -b editing editing main && + git -C editing commit --allow-empty -m edit-me && + ( + set_fake_editor && + FAKE_LINES="edit 1" git -C editing rebase -i --keep-empty HEAD~1 + ) && + test_must_fail git -C editing symbolic-ref -q HEAD && + echo "$(pwd)/editing" >expect && + git for-each-ref --format="%(worktreepath)" refs/heads/editing >actual && + test_cmp expect actual +' + +test_expect_success 'worktree atom ignores branches rebase --update-refs will move' ' + test_when_finished "git -C updating rebase --abort; rm -rf updating; git worktree prune; git branch -D updating mid" && + git worktree add -b updating updating main && + git -C updating commit --allow-empty -m one && + git -C updating branch mid && + git -C updating commit --allow-empty -m two && + test_must_fail git -C updating rebase -f --update-refs -x false main && + git for-each-ref --format="%(refname:short) [%(worktreepath)]" \ + refs/heads/updating refs/heads/mid >actual && + cat >expect <<-EOF && + mid [] + updating [$(pwd)/updating] + EOF + test_cmp expect actual +' + +test_expect_success 'worktree atom ignores a rebase of a detached HEAD' ' + test_when_finished "git -C detached-rebase rebase --abort; rm -rf detached-rebase; git worktree prune" && + git worktree add --detach detached-rebase main && + git -C detached-rebase commit --allow-empty -m detached && + test_must_fail git -C detached-rebase rebase -f -x false main && + git for-each-ref --format="%(worktreepath)" refs/heads/ >actual && + test_grep ! detached-rebase actual +' + +test_expect_success 'worktree atom ignores the HEAD of a bare repository' ' + test_when_finished "rm -rf bare.git bare-wt" && + git clone --bare . bare.git && + git -C bare.git symbolic-ref HEAD refs/heads/main && + git -C bare.git worktree add --detach ../bare-wt main && + git -C bare.git for-each-ref --format="%(worktreepath)" refs/heads/main >actual && + echo >expect && + test_cmp expect actual && + git -C bare-wt branch --list main >actual && + echo " main" >expect && + test_cmp expect actual +' + test_expect_success 'start after with empty value' ' cat >expect <<-\EOF && refs/heads/main -- 2.56.0