Parents and children of check-in [f91105346b]
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2026-08-24
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| 20:10 |
landing: cycles, unresolvable targets, and already-contained branches
Three holes found by walking the scenario space rather than the happy path. A retarget could make a cycle. Every segment in one then refuses forever, each waiting on the next, and 'ls' panicked outright computing an indent for a chain with no bottom. Cycles are now refused, direct and indirect. A retarget accepted a branch name that does not resolve, minting a permanent record aimed at nothing -- the check 'open' has always made before minting one. A branch already contained in its target reported 'did not merge cleanly; resolve and commit'. There was nothing to resolve: 'merge' had said 'already up to date'. The record could then only be closed by rejecting it, recording the opposite of what happened. It now settles as accepted with no merge, which is what is true. Reachable from a stack by landing the top segment first -- it carries the ones below it in. check-in: b450374bce user: dmestas tags: strata | |
| 19:17 |
landing: refuse a landing whose base was rejected or already landed
The ordering guard only looked for an OPEN base, so a rejected one slipped through and the accept SUCCEEDED -- 'accepted seg2 -> seg1', filing the work on a branch nobody would land. Nothing failed and nothing warned; the merge is fine, which is why only a rule catches it. Same hole for a base that already landed, reachable when the auto-retarget after that accept did not run. All three cases now refuse and name the retarget that fixes them. Documented the half of this that surprises: rejecting a landing rejects the proposal, not the code beneath a segment stacked on it. That branch descends from the rejected one and still carries its check-ins, so landing it on trunk lands them too. check-in: f91105346b user: dmestas tags: strata | |
| 18:52 |
landing: close the landed leaf without propagating
The propagating form marked every segment ABOVE a landed one closed too: in a stack those check-ins descend from the landed tip, so propagation followed the DAG straight into work that was still open. The landing records stayed open and correct; only 'branch' and 'leaves' lied, which is exactly where you look for what still needs doing. Fossil's own propagating close is safe because it closes a check-in with no descendants. A landed segment is a leaf by the same-branch rule while still having children on the branch above it. check-in: d97b39b272 user: dmestas tags: strata | |