fix(hooks): remove wmux hook leaves, not the groups they share - #1008
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`stripWmuxHooks` filtered whole matcher groups, while `isWmuxGroup` matches a
group when ANY of its leaves carries the bridge marker. Claude Code's schema
lets one matcher group hold several command leaves, so a user who put their own
command beside ours lost it — on `wmux setup-hooks --remove`, and on every
reinstall, since install is clear-then-add through the same function. The doc
comment claimed the opposite ("PRESERVES every foreign hook group"): true per
group, false per leaf.
Removal now runs per leaf. Our leaves go; the group survives carrying the
user's leaves and its matcher unchanged; a group left empty still disappears
with its event array and, if that was the last one, the `hooks` key. Detection
stays per group on purpose — a mixed group still provides the spec — so
`installedSpecsIn`, profile derivation and `--status` are untouched.
`installHooks` only ever writes single-leaf wmux-only groups, so for every
group wmux itself wrote the two granularities are byte-identical; the existing
suite passes unchanged, removal counts included, and those counts now count
leaves.
Three tests pin the hand-mixed case that used to lose data: `--remove` keeps
the foreign leaf, a reinstall keeps it, and the count reports leaves rather
than groups. Reverting the source change turns exactly those three red and
leaves the other 65 green.
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Included review availability: Your plan provides up to 2 included reviews per hour; 1 remains after this review. 📝 WalkthroughWalkthroughThe hook cleanup now removes only wmux-owned command leaves. Mixed matcher groups retain foreign commands and matchers. Reinstall and app-update refresh paths preserve shared configuration, while empty wmux-owned groups and hook maps are removed. ChangesHook cleanup behavior
Estimated code review effort: 2 (Simple) | ~10 minutes Merge Risk: ⚪ Minimal · up to Hook removal now preserves user commands and matcher metadata when mixed with wmux hooks, while targeted regression tests cover removal, reinstall, and leaf counts. No actionable merge-blocking risk remains beyond normal checks. Suggested reviewers: 🚥 Pre-merge checks | ✅ 5✅ Passed checks (5 passed)
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Inline comments:
In `@src/cli/commands/__tests__/setupHooks.test.ts`:
- Around line 167-190: Update the reinstall test around installHooks and the
Stop group to capture the foreign group’s original matcher before the second
install, then assert that the group containing echo mine retains that same
matcher afterward. Keep the existing leaf-preservation and wmux-hook assertions
unchanged.
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changelog.d/1008.mdsrc/cli/commands/__tests__/setupHooks.test.tssrc/cli/commands/setupHooks.ts
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Review found the reinstall case under-asserted: it checked that the user's leaf survives and that wmux's hook is re-added once, but not that the group handed back is still the group that was there. A strip that rebuilt the group and dropped `matcher` passed it. The removal case already pinned this (`toEqual` on the whole group), so the property was covered on one path and not the other. Now both. Control: drop the matcher in `stripWmuxHooks` and two tests go red instead of one.
The README's `--remove` line already promised this, and as of the leaf-level strip it is true at the granularity a reader would assume. Says so explicitly, because the interesting case — your command sharing a matcher group with ours — is the one where the promise used to be false and a reader has no way to tell which granularity the sentence means.
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Merged — thank you. This is a good catch and a well-argued one. The part I appreciated most is that you did not just flip the filter: you kept The state table for One loose end I will pick up in a follow-up, not worth another round trip here: |
2 participants
Summary
setup-hooksowns its hooks one command leaf at a time but removes thema whole matcher group at a time. Claude Code's schema lets one matcher group
hold several command leaves, so a user who put their own command beside ours
inside one group loses it — on
wmux setup-hooks --remove, and on everyreinstall, since install is clear-then-add through the same function. Removal is
now per leaf.
Changes
stripWmuxHooksfilters leaves, not groups. Our leaves go; the groupsurvives carrying the user's leaves and its
matcherunchanged; a group leftempty still disappears with its event array, and the
hookskey with it whenthat was the last one.
isWmuxLeafextracted;isWmuxGroupis nowhooks.some(isWmuxLeaf)anddeliberately keeps its group-level meaning. Detection asks "does this group
provide the spec?", which a mixed group still does, so
installedSpecsIn,profile derivation (Should lifecycle signals be installable without the wide PreToolUse permission gate? #970) and
--statusare untouched.writes —
installHooksonly ever emits single-leaf wmux-only groups — anddifferent only where one group held more than one of ours.
foreign (non-wmux) hook group": true per group, false per leaf.
integrations/claude/README.mdsays which granularity "leaves your otherhooks intact" means, since the interesting case is exactly the one a reader
cannot infer from the sentence.
CHANGELOG entry
Fixed
setup-hooksno longer removes a hook of your own that shares a matchergroup with wmux's. Claude Code allows several commands under one matcher. If
you added yours next to wmux's,
wmux setup-hooks --removetook yours withit — and so did every reinstall, including the bridge refresh that runs on
app update. Removal now drops only the wmux command and leaves the group, its
matcher, and your commands in place. Hooks in groups of their own were never
affected. (fix(hooks): remove wmux hook leaves, not the groups they share #1008)
Stability tier impact
No RPC, event, or pipe surface changes. The observable change is confined to
which entries
setup-hookswrites back to~/.claude/settings.json, in thedirection of touching less of the file than before.
Substrate contract impact (Substrate 3.0)
n/a — settings.json hook registration only.
Test plan
Unit —
src/cli/commands/__tests__/setupHooks.test.ts, 3 cases added(68 total, green):
--removeon a hand-mixed group keeps the foreign leaf and the group'smatcher;
group of its own;
one stale path —
removed === 2).The reinstall case also asserts the preserved group keeps its
matcher(review): removal already pinned that with a whole-group
toEqual, installdid not, so a strip that rebuilt the group and dropped the matcher passed.
Control for that one specifically: make
stripWmuxHooksrebuild askept.push({ hooks: foreign })and two tests go red where one did before.Control run — revert
setupHooks.tsonly, keep the tests: exactly thosethree go red and the other 65 stay green, so each new test pins behaviour that
did not exist before.
State table walked for
stripWmuxHooks, since the bug was one unenumeratedcase: group with no wmux leaf (untouched) / all leaves wmux (group goes, as
before) / mixed (new behaviour) /
hooksnot an array or empty (untouched,as before) / non-object junk beside a wmux leaf (kept — anything we cannot
prove is ours is the user's).
npx tsc --noEmitclean;eslintclean on both touched files.Full suite: 11 889 passed. 14 failures in 7 files, none of which import
setupHooks—logSink(Windows file-rotation/lock timing),worktree.handler,mergeSession,atlasCoherence,brokerLifecycle.dynamic, and theTHIRD_PARTY_NOTICESdrift guard, which is stale locally because mynode_modulespredates the dependency bumps in chore(deps): bump ip-address and express-rate-limit #988/chore(deps): bump the npm-security group across 1 directory with 3 updates #994/Close the eleven open Dependabot alerts with three dependency overrides #1007. Two runs ofthe identical tree failed different sets (20 tests, then 14), so those are
environment/timing, not the diff. CI is the arbiter.
Related issues / PRs
Refines #781, which established that a group carrying our bridge command is
ours to refresh. That is still true — this narrows it from the group to the
command.
Reviewer checklist
.env, or unrelated large binaries.Summary by CodeRabbit
Bug Fixes
Documentation
Tests