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Push updated heads before retargeting PR bases in the fan-out path#42

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claude/code-review-bug-check-3njvdx
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Push updated heads before retargeting PR bases in the fan-out path#42
Phlogistique wants to merge 6 commits into
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claude/code-review-bug-check-3njvdx

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The squash-merge fan-out retargeted every updated child PR onto the
target branch and only afterwards pushed the new heads, batched into a
single non-atomic push together with the merged-branch deletion. If the
push failed (e.g. someone pushed to a child mid-run, rejecting the plain
push) or a pr edit died partway through the loop, set -e aborted the run
with PRs already retargeted but their heads stale - and unlike the
conflict-resume path there is no label to re-trigger the action, so
nothing ever repaired them.

Apply the ordering the resume path already uses: push the updated heads
first, then flip the bases, and delete the merged branch last (deleting
a PR's base branch closes the PR, so every child must be off it first).
A failed push now leaves the PRs untouched on their old base.

The unit test captures the run transcript and asserts the
push -> retarget -> delete order; it fails against the previous code.
Also corrects the README: pushes are plain, not forced, and branch
deletion is its own final step.

🤖 Generated with Claude Code

https://claude.ai/code/session_01JHvKryT4QUpHYdNq9YEQxX

claude added 3 commits June 9, 2026 20:49
The squash-merge fan-out retargeted every updated child PR onto the
target branch and only afterwards pushed the new heads, batched into a
single non-atomic push together with the merged-branch deletion. If the
push failed (e.g. someone pushed to a child mid-run, rejecting the plain
push) or a pr edit died partway through the loop, set -e aborted the run
with PRs already retargeted but their heads stale - and unlike the
conflict-resume path there is no label to re-trigger the action, so
nothing ever repaired them.

Apply the ordering the resume path already uses: push the updated heads
first, then flip the bases, and delete the merged branch last (deleting
a PR's base branch closes the PR, so every child must be off it first).
A failed push now leaves the PRs untouched on their old base.

The unit test captures the run transcript and asserts the
push -> retarget -> delete order; it fails against the previous code.
Also corrects the README: pushes are plain, not forced, and branch
deletion is its own final step.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

https://claude.ai/code/session_01JHvKryT4QUpHYdNq9YEQxX
Since #40 the conflict comment's fast-forward step reads `git merge
--ff-only origin/<branch>`, which assert_conflict_comment_merges picks
up with its `^git merge` grep, so the extracted commands never match the
expected conflict merges. Skip the --ff-only line when extracting.

Also trim the new comments in the fan-out push/retarget/delete sequence.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

https://claude.ai/code/session_01JHvKryT4QUpHYdNq9YEQxX
The fix for the --ff-only line breaking assert_conflict_comment_merges
moved to a separate PR; the e2e job here stays red until that lands and
main is merged back in.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

https://claude.ai/code/session_01JHvKryT4QUpHYdNq9YEQxX
Phlogistique added a commit that referenced this pull request Jun 9, 2026
Since #40 the conflict comment's fast-forward step reads `git merge
--ff-only origin/<branch>`, which `assert_conflict_comment_merges` picks
up with its `^git merge` grep, so the extracted commands never match the
expected conflict merges and the check fails on every conflict scenario.
#40's test tweak only handled the new `# ...` hash gloss, not the new
merge line.

This went unnoticed because `tests.yml` only runs on `pull_request`, so
the breakage only surfaced on the first PR after #40 landed (#42, [run
27235483781](https://github.com/scortexio/autorestack-action/actions/runs/27235483781)).

Fix: skip the `--ff-only` line when extracting merge commands. Verified
green as part of #42's [run
27235912022](https://github.com/scortexio/autorestack-action/actions/runs/27235912022)
before being split out into this PR.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

https://claude.ai/code/session_01JHvKryT4QUpHYdNq9YEQxX

---
_Generated by [Claude
Code](https://claude.ai/code/session_01JHvKryT4QUpHYdNq9YEQxX)_

Co-authored-by: Claude <noreply@anthropic.com>
Phlogistique added a commit that referenced this pull request Jun 9, 2026
`branches: ['*']` looks like "all branches", but in GitHub's [filter
pattern
syntax](https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#filter-pattern-cheat-sheet)
the `*` glob does not match `/` — and `pull_request.branches` filters on
the *base* branch. So the Tests workflow silently skipped any PR whose
base branch contains a slash. Concretely: #45 is stacked on #42's
`claude/...` branch and got no Tests run at all.

Drop the filter — a bare `pull_request:` trigger covers every base
branch. (`'**'` would too, but no filter says what it means.) The
README's example workflows never had a filter, so no doc change is
needed beyond the inline comment.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

https://claude.ai/code/session_01JHvKryT4QUpHYdNq9YEQxX

---
_Generated by [Claude
Code](https://claude.ai/code/session_01JHvKryT4QUpHYdNq9YEQxX)_

Co-authored-by: Claude <noreply@anthropic.com>
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