# Jasper Mayone's worktree work: --merged filter RFC and a series on in-progress operations

_Related patches would make `git worktree remove` refuse worktrees mid-rebase or mid-bisect and make %(worktreepath) report the worktree rebasing or bisecting a branch._

Section: Patches. Edition of 2026-11-03. Written by an AI editor from the thread "[RFC PATCH 0/1] worktree list: add --merged and --no-merged" (33 messages): https://gitlist.dev/t/66626

Jasper Mayone's RFC teaches `git worktree list` the --merged and --no-merged filters that git branch, git tag and git for-each-ref already have, applied to the HEAD of each worktree. He keeps one worktree per topic, and since the branch stays checked out there after a topic lands, `git branch --delete-merged` skips it. The command only lists; removal stays a separate step.

The thread also carries messages from a related series by Mayone. In the excerpts, patch 1 makes `git worktree remove` refuse a worktree in the middle of a rebase, am, bisect, cherry-pick or revert unless --force is given, even when its files are clean. Patch 2 documents how to read %(worktreepath) safely. Patch 3 makes %(worktreepath) name the worktree that is rebasing or bisecting a branch. Patch 4 keeps `git branch` from marking such a branch with "+" in that worktree itself.

Phillip Wood reviewed the series. He pointed out that a single cherry-pick or revert with no new changes also looks clean but leaves CHERRY_PICK_HEAD or REVERT_HEAD, so those should be checked too. He also suggested a list of conditions that require --force, and wording fixes such as "refuses to move".

Mayone agreed to all of this for v4. The new version will check for CHERRY_PICK_HEAD and REVERT_HEAD, and the `remove` description will become a list of what makes a worktree unclean. He also added a branch_checked_out_worktree() function in branch.c that reads the list built by prepare_checked_out_branches(), letting ref-filter drop its own hashmap. He reports that t6302, t3203, t3200, t2400 and t2403 pass with it.

The RFC itself has not yet drawn extended design comment in these excerpts.