adopt-project.py: on a disk that ignores case, execute loses a case twin the plan keeps in the root when its twin goes to a leg

On a disk that ignores case, execute loses a case twin the plan keeps in the root when its twin goes to a leg (for example A in the root and a in the code leg).

Measured with git 2.43 at 4c7b8acd, on such a disk: a FUSE disk that ignores case, run in a private namespace.

Source twins: A/a and D/x/d/x.
The plan sends A and D/ to the root, and a and d/ to the code leg.
check printed plan ok.
execute exited 1 with adopt-lost for A and D/x, after both legs and the split were pushed.
On a disk that keeps case, the same plan exits 0.

Not caught by plan-case-twins. That finding (#1161, branch fix/1161-check-names-case-twins) leaves this case alone on purpose, since each repository holds its own twin apart.

Cause: not traced yet. The writer's reading: the mount's git rm of the twin that moves deletes the one file both names share, and git add -A then stages the kept twin's deletion.

Decide whether check names it, by asking the work directory's disk for core.ignorecase as materialize_assembly_root writes the shape files through a root-kept symlink to anywhere on disk, and crashes with a traceback on a link loop, after both legs are pushed #183's probe asks about symlinks, or whether execute avoids it.
Add a row that skips where the disk keeps case.

Outside v1.2.0 by Brett Heap's ruling of 2026-10-21T10:32:04Z ("leave the follow-ups out of v1.2.0").

Lane: openreposhape-1 (openRepoShape-1)

(lane openRepoShape-1, 2026-10-23T03:11:20Z) The same loss happens to a twin the plan drops. r1189, reviewing #1189, measured it on a FUSE disk that ignores case, at 4c7b8acd and at 8684af86:

A is kept in the root and a is answered drop, and check prints plan ok.
execute exits 1 with FINDING adopt-lost for A ("is in no leg, not in the root tree, and not listed as drop"). Both legs and the split are pushed before it.

So a fix here should cover a dropped twin as well as one sent to a leg.

Lane: openreposhape-1 (openRepoShape-1)

adopt-project.py: `plan-case-twins` leaves a set of one name whose pa…

tests/test_adopt_check_throwaway_repos.py: rows pin a file against a …

CLAIMED — lane openRepoShape-1, session 300f8f46-004a-4e72-8587-4f192be2e108@Eagle, 2026-10-23T11:05:05Z, for #1183

Logged in lanes/log/openRepoShape-1.md at 3b7d2e2f7e71c7e907122687f57eda9179feae7d.

The three reads (lane-collision-protocol Rule 1):

1. existing `CLAIMED —` comments on opensoft/openRepoShape#1183:
   none
2. `gh pr list --repo opensoft/openRepoShape --state all --search "#1183"`, kept where the row or its body names `#1183`:
1189	adopt-project.py: `check` names the case twins the plan keeps in one repository (`A` and `a`, `D/x` and `d/x`, `f` and `F/x`) as `plan-case-twins` on every disk, a set of one blob as a NOTE, and `execute` refuses the finding before any leg (#1161)	fix/1161-check-names-case-twins	OPEN
3. `git ls-remote --heads git@github.com:opensoft/openRepoShape` branches naming `1183` as a whole token:
   none

tests/test_adopt_check_throwaway_repos.py: rows pin that the mount ke…

tests/test_adopt_check_throwaway_repos.py: rows pin that a forced `gi…

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adopt-project.py: on a disk that ignores case, `execute` loses a case twin the plan keeps in the root when its twin goes to a leg #1183

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adopt-project.py: on a disk that ignores case, execute loses a case twin the plan keeps in the root when its twin goes to a leg #1183

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brettheap commented on Oct 23, 2026

brettheap commented on Oct 23, 2026

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adopt-project.py: on a disk that ignores case, `execute` loses a case twin the plan keeps in the root when its twin goes to a leg #1183