Three related extraction bugs surfaced in the EAC session all rooted
in the line-based state machine:
1. `<style ... />` (JSX self-closing) had no separate `</style>` for
the "skip until close" mode to exit on, so the state machine stuck
and every `data-impeccable-variant` marker after it got missed.
Accept reported `handled: false, error: "Variant N not found"`.
2. A variant whose entire `<div ...>...</div>` sits on one line had
its body silently discarded — the marker line was `continue`d past,
and the extractor started capturing from the next line, which
usually belonged to a different variant or the wrapper close.
3. `extractCss` kept scanning for `</style>` after a self-closing
opener, greedily swallowing every subsequent variant div as "CSS".
Result: a mangled carbonize block stuffed with HTML and a duplicate
variant rendered below.
## Fix
Replaced the line-based state machine with a string-based flow:
- `stripStyleAndJoin(lines, block)` returns the wrapper text with
`<style>` elements fully removed. Handles self-closing, same-line
open+close, and multi-line open/close. Markers inside CSS strings
(e.g. `@scope ([data-impeccable-variant="1"])`) are gone by the
time extraction runs — no false positives.
- `extractInnerByAttr(text, attrMatch)` is a balanced-tag matcher that
walks the joined text finding `<TAG ...attrMatch...>…</TAG>` with
proper depth tracking for nested same-tag elements. Handles
single-line, multi-line, and deeply nested variants.
- `extractOriginal` and `extractVariant` are thin wrappers over the
above.
- `extractCss` gets explicit same-line handling: returns null for
self-closing (nothing to carbonize), extracts inner content via
regex for same-line `<style>…</style>`, falls through to the
existing multi-line path otherwise.
## Tests
New tests/live-accept.test.mjs with four cases — all failing before,
all passing after:
- Self-closing `<style />` with dangerouslySetInnerHTML
- Single-line `<style>…</style>`
- Multi-line `<style>...</style>` (regression baseline)
- Discard restores the original element after self-closing style
Wired into `bun run test`. Full suite passes.
Credit: precise repro + root-cause trace from the other agent in the
EAC session.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
