[DylanPiercey]

htmljs-parser folds a trailing // comment into a tag var, which the compiler now accepts (marko-js/marko#4242). The TagVar embed formatted it as var ${code}=_, putting the =_ inside the comment, so it fell back to printing the source, where the comment swallowed the rest of the open tag (<a/x // c/>). A tag var cannot be parenthesized like an attr value, so the comment is split off, using htmljs-parser's validators to find where it starts, and printed as a block comment after the var (<let/count /* total */=0>), which stays valid in both syntaxes, with and without a JS parser.

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🦋 Changeset detected

Latest commit: 0430259

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
prettier-plugin-marko	Patch

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 98.21%. Comparing base (d0ef393) to head (0430259).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #153      +/-   ##
==========================================
+ Coverage   98.17%   98.21%   +0.04%     
==========================================
  Files           8        8              
  Lines         329      337       +8     
  Branches       58       62       +4     
==========================================
+ Hits          323      331       +8     
  Misses          1        1              
  Partials        5        5              

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ℹ️ Recent review info

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Run ID: 4d22d563-24ac-494d-8076-fe2c42689038

📥 Commits

Reviewing files that changed from the base of the PR and between 690eebc and 0430259.

⛔ Files ignored due to path filters (6)

• src/__tests__/fixtures/open-tag-comments/__snapshots__/auto.expected.marko is excluded by !**/__snapshots__/** and included by **
• src/__tests__/fixtures/open-tag-comments/__snapshots__/concise.expected.marko is excluded by !**/__snapshots__/** and included by **
• src/__tests__/fixtures/open-tag-comments/__snapshots__/html.expected.marko is excluded by !**/__snapshots__/** and included by **
• src/__tests__/fixtures/tag-var-line-comment/__snapshots__/auto.expected.marko is excluded by !**/__snapshots__/** and included by **
• src/__tests__/fixtures/tag-var-line-comment/__snapshots__/concise.expected.marko is excluded by !**/__snapshots__/** and included by **
• src/__tests__/fixtures/tag-var-line-comment/__snapshots__/html.expected.marko is excluded by !**/__snapshots__/** and included by **

📒 Files selected for processing (3)

• src/__tests__/fixtures/tag-var-line-comment/template.marko
• src/index.ts
• src/utils/to-valid-doc.ts

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Walkthrough

The change adds splitTagVarComment to separate qualifying trailing line comments from tag-variable code. Tag-variable printing and JavaScript embedding use the extracted code and include the comment in formatted output. A fixture covers six declarations with line comments. The change also adds a patch changeset and removes the bug report.

Merge Risk: ⚪ Minimal · up to 04302

The formatting change is ready to merge after normal checks; no identified issue remains that would block it.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly and concisely describes the main change: moving a trailing tag variable line comment into a block comment.
Description check	✅ Passed	The description directly explains the formatting bug, its cause, and the implemented fix. It is related to the changeset.
Docstring Coverage	✅ Passed	Docstring coverage is 80.00% which is sufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 5 functions across 2 files. (1 skipped: 1 u…
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.

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