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Pull request overview
This PR replaces the custom Markdown→HTML conversion pipeline in internal/richtext with a goldmark-based converter configured for Basecamp/Trix-compatible output, and updates HTML→Markdown handling to improve edit-loop round-trip fidelity (notably for multiline blockquotes, list continuations, and code fences).
Changes:
- Swap the hand-rolled
MarkdownToHTMLparser for a goldmark converter with custom AST transformer/renderer and a\@mention-suppression inline parser. - Improve
HTMLToMarkdownnormalization for blockquotes, lists, and code fences to preserve multiline structure across round-trips. - Add/adjust richtext tests and promote goldmark to a direct dependency in
go.mod.
Reviewed changes
Copilot reviewed 3 out of 3 changed files in this pull request and generated 2 comments.
| File | Description |
|---|---|
| internal/richtext/richtext.go | Replaces Markdown conversion with goldmark + custom Trix components; adjusts HTML→Markdown normalization helpers. |
| internal/richtext/richtext_test.go | Updates expected HTML and adds targeted round-trip and edge-case tests for the new behavior. |
| go.mod | Adds github.com/yuin/goldmark as a direct requirement (was previously indirect). |
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1 issue found across 3 files
Prompt for AI agents (unresolved issues)
Check if these issues are valid — if so, understand the root cause of each and fix them. If appropriate, use sub-agents to investigate and fix each issue separately.
<file name="internal/richtext/richtext.go">
<violation number="1" location="internal/richtext/richtext.go:613">
P1: `reStripP` regex matches `<pre>`, `<progress>`, and any other tag starting with `p`, not just `<p>`. The pattern `</?p[^>]*>` needs a word boundary after `p` — e.g., require the next character to be `\s` or `>` so that `<pre>` is excluded.</violation>
</file>
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Replace the ~350-line regex pipeline (convertInline, placeholder extraction/restoration, line-by-line parser) with goldmark configured for Trix editor compatibility via three custom components: - trixTransformer: forces tight lists, converts soft breaks to hard inside list items and blockquotes, inserts <br> between blank-line-separated blocks for Trix paragraph spacing - trixRenderer: compact blockquote output, HTML escaping for raw HTML blocks (vs <!-- raw HTML omitted -->), TrixBreak and EscapedAt node rendering - escapedAtParser: intercepts \@ before goldmark's standard escape handling to preserve mention-suppression syntax HTMLToMarkdown gains <br>-aware round-trip support: blockquote and list handlers now normalize <br> tags before splitting, so multiline blockquotes and list continuations survive the edit loop (MarkdownToHTML → HTMLToMarkdown) faithfully. Also fixes multiline blockquote/paragraph regex matching ((?i) → (?is)) and trims trailing newlines from code fence content. Promotes goldmark from indirect to direct dependency (v1.7.13, already present via glamour).
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Summary
convertInline, placeholder extraction/restoration,line-by-line parser) with goldmark configured for Trix editor compatibility via three custom
components:
trixTransformer(tight lists, soft→hard breaks, paragraph spacing),trixRenderer(compact blockquotes, HTML escaping, TrixBreak), andescapedAtParser(
\@mention suppression)HTMLToMarkdownround-trip fidelity: blockquote and list handlers now normalize<br>before splitting, so multiline blockquotes and list continuations survive the edit loop.
Also fix multiline regex matching (
(?i)→(?is)) and trim trailing newlines from codefence content
Net: -433/+452 lines across 3 files. The hand-rolled parser shrinks by ~300 lines; goldmark
components add ~200; tests add ~200 with exact round-trip assertions.
Behavioral changes
- Two\nAfterkeepsAfterinside the listitem instead of starting a new paragraph. Rare in CLI input; CommonMark-correct.
Text\n---is now an h2 (CommonMark), not paragraph + hr.%in URLs:\%produces%not%25(CommonMark-correct).\ninside<code>(goldmark standard fenced code output).\n) instead of space join — HTML renders identically.Test plan
bin/cigreen (all checks pass; tidy-check requires committed state)TestMarkdownToHTML/TestMarkdownToHTMLBackslashEscapesexpectations updatedTestMarkdownToHTMLBackslashAtCounts(4 backslash counts),TestMarkdownToHTMLMultiParagraphBlockquote(single/multi/multi-para),TestMarkdownToHTMLRawHTMLBlock(single/multiline script),TestHTMLToMarkdownMultilineBlockquote,TestHTMLToMarkdownMultilineParagraph,TestHTMLToMarkdownCodeFenceNewlineTestEditLoopRoundTripwith exact assertions: blockquotes (3 variants), lists (plain +continuation), code fences, headings, mixed content
basecamp todos create/basecamp messages createagainst a realBasecamp account — created todo with heading, bold/italic, list with continuation,
multiline blockquote, and code fence; server HTML → markdown → HTML → markdown
round-tripped stably with all structure preserved