Record two tokenizer defects handed over from the marko backlog

[DylanPiercey]

Both were found while working in marko-js/marko and recorded there; triage put the fix in this repo, so they move here rewritten against this repo's source and with checks that run here.

shouldTerminateHtmlAttrValue has a look-behind for => but not >=, so <const/positive=input.delta >= 0/> silently truncates with no onError. Separately, a backslash-escaped quote in a parsed-text body opens a string, so \" in a <style> swallows the rest of the file.

Removed from marko in marko-js/marko#3714. The ambiguous space-separated > form stays there — the tokenizer can't distinguish it from a legitimate tag close.

[changeset-bot]

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Latest commit: f8d17c6

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 99.95%. Comparing base (3819faa) to head (f8d17c6).

Additional details and impacted files

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##             main     #233   +/-   ##
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  Coverage   99.95%   99.95%           
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  Files          34       34           
  Lines        4270     4270           
  Branches      793      793           
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  Hits         4268     4268           
  Misses          2        2           

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[coderabbitai]

Walkthrough

Added documentation for two suspected parser bugs. One report covers silent truncation of unquoted attribute expressions containing >=. The other covers incorrect handling of backslash-escaped quotes in parsed-text bodies and parsed strings. Each report includes reproduction details and regression testing requirements.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly describes the two tokenizer defects recorded by the pull request.
Description check	✅ Passed	The description explains both tokenizer defects, their origin, and the repository-specific scope.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch dpiercey-ws-agent-cleanup-dp8z5v

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[coderabbitai]

Actionable comments posted: 1

🤖 Prompt for all review comments with AI agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Inline comments:
In `@agent-feedback/bugs.md`:
- Line 15: Update PARSED_TEXT_CONTENT.parse so a declined CODE.BACK_SLASH
followed by either quote is consumed as text, without relying on quoteCharCode;
update PARSED_STRING.parse to consume a backslash plus the active quoteCharCode
before quote-closing logic. Add fixtures covering escaped quotes in both
text/style content and parsed strings, and assert INVALID_TEMPLATE_STRING is not
emitted.

🪄 Autofix (Beta)

Fix all unresolved CodeRabbit comments on this PR:

• Push a commit to this branch (recommended)
• Create a new PR with the fixes

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: dc479495-b464-4787-a20e-ee87c43ad301

📥 Commits

Reviewing files that changed from the base of the PR and between 3819faa and f8d17c6.

📒 Files selected for processing (1)

• agent-feedback/bugs.md