Subject: [RFC PATCH 1/2] worktree: teach `list` to mark locked worktree

From: Rafael Silva <[email-masked]>
Date: Mon, 28 Sep 2020 15:49:52 +0000

The output of `worktree list` command is extended to mark a locked
worktree with `(locked)` text. This is used to communicate to the
user that a linked worktree is locked instead of learning only when
attempting to remove it.

This is the output of the worktree list with locked marker:

  $ git worktree list
  /repo/to/main                abc123 [master]
  /path/to/unlocked-worktree1  456def [brancha]
  /path/to/locked-worktree     123abc (detached HEAD) (locked)

Signed-off-by: Rafael Silva <[email-masked]>
---
 Documentation/git-worktree.txt | 5 +++--
 builtin/worktree.c             | 6 +++++-
 2 files changed, 8 insertions(+), 3 deletions(-)

diff --git a/Documentation/git-worktree.txt b/Documentation/git-worktree.txt
index 32e8440cde..a3781dd664 100644
--- a/Documentation/git-worktree.txt
+++ b/Documentation/git-worktree.txt
@@ -96,8 +96,9 @@ list::
 
 List details of each working tree.  The main working tree is listed first,
 followed by each of the linked working trees.  The output details include
-whether the working tree is bare, the revision currently checked out, and the
-branch currently checked out (or "detached HEAD" if none).
+whether the working tree is bare, the revision currently checked out, the
+branch currently checked out (or "detached HEAD" if none), and whether
+the worktree is locked.
 
 lock::
 
diff --git a/builtin/worktree.c b/builtin/worktree.c
index 99abaeec6c..8ad2cdd2f9 100644
--- a/builtin/worktree.c
+++ b/builtin/worktree.c
@@ -676,8 +676,12 @@ static void show_worktree(struct worktree *wt, int path_maxlen, int abbrev_len)
 		} else
 			strbuf_addstr(&sb, "(error)");
 	}
-	printf("%s\n", sb.buf);
 
+	if (!is_main_worktree(wt) &&
+	    worktree_lock_reason(wt))
+		strbuf_addstr(&sb, " (locked)");
+
+	printf("%s\n", sb.buf);
 	strbuf_release(&sb);
 }
 
-- 
2.28.0.763.ge7086f1eef