fix(workflows): preserve intra-overlay order for multiple insert_after edits#3662
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jawwad-ali wants to merge 1 commit into
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fix(workflows): preserve intra-overlay order for multiple insert_after edits#3662jawwad-ali wants to merge 1 commit into
jawwad-ali wants to merge 1 commit into
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…r edits _traverse_and_apply's insert_after loop iterated reversed(edits) over the flat per-anchor edit list. The reversal is only meant to place a higher-priority OVERLAY closer to the anchor (mirroring insert_before's winner-closest behaviour), but reversing the flat list also flipped the declared order of multiple insert_after edits authored within a SINGLE overlay: [insert_after a->x, insert_after a->y] produced [a, y, x, b] instead of [a, x, y, b]. insert_before (a forward loop) already preserves order, so the two operations were asymmetric. Group contiguous same-layer edits and reverse the GROUP order only, keeping each overlay's own inserts in declared order. Cross-overlay priority is unchanged (higher-priority overlay still lands closest to the anchor). 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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What
In
_traverse_and_apply(workflows/overlays/merge.py), theinsert_afterloop iteratedreversed(edits)over the flat per-anchor edit list. That reversal exists to place a higher-priority overlay closest to the anchor (mirroringinsert_before's winner-closest behaviour) — but reversing the flat list also flips the declared order of multipleinsert_afteredits authored within a single overlay.Concretely, one overlay with
[insert_after a→x, insert_after a→y]produced[a, y, x, b]instead of[a, x, y, b]. The siblinginsert_beforeloop directly above iterates forward and preserves order, so the two operations were asymmetric.Fix
Group contiguous same-layer edits and reverse the group order only, keeping each overlay's own inserts in declared order. Cross-overlay priority is unchanged — a higher-priority overlay's group still lands closest to the anchor.
Tests
tests/workflows/test_overlay_merge.py::TestMergeSteps::test_merge_steps_multiple_insert_after_same_overlay_preserves_order— one overlay, twoinsert_afteron the same anchor → asserts[a, x, y, b]. Fails before the fix ([a, y, x, b]); passes after. The existingtest_merge_steps_higher_priority_wins(cross-overlay ordering) still passes.ruffclean; all 43 overlay merge + composer tests pass.AI-assisted: authored with Claude Code. Verified the asymmetry against the forward
insert_beforeloop and confirmed cross-overlay priority is preserved.