Use explicit snapshot variable when checking tag positions in orphaned
TLD pass. While JavaScript's replace() doesn't mutate during iteration,
this makes intent explicit and adds test coverage for multi-TLD HTML.
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Code review fixes:
1. Orphaned TLD pass now checks if match is inside HTML tag
- Uses lastIndexOf('<') vs lastIndexOf('>') to detect tag context
- Skips wrapping when between < and > (inside attributes)
- Prevents invalid HTML like <a href="...&<code>D.md</code>">
2. textMode: 'html' now trusts caller markup
- Returns text unchanged instead of wrapping
- Caller owns HTML structure in this mode
Tests added:
- 'does not wrap orphaned TLD inside href attributes'
- 'does not wrap orphaned TLD inside any HTML attribute'
- 'does not wrap in HTML mode (trusts caller markup)'
Remove .ai, .io, .tv, .fm from FILE_EXTENSIONS_WITH_TLD because:
- These are commonly used as real domains (x.ai, vercel.io, github.io)
- Rarely used as actual file extensions
- Users are more likely referring to websites than files
Keep: md, sh, py, go, pl (common file extensions, rarely intentional domains)
Keep: am, at, be, cc, co (less common as intentional domain references)
Update tests to reflect the change:
- Add test for supported extensions (.am, .at, .be, .cc, .co)
- Add test verifying popular TLDs stay as links
When text like 'R&D.md' doesn't match the main file pattern (because &
breaks the character class), the 'D.md' part can still be auto-linked
by Telegram as a domain (https://d.md/).
Add second pass to catch orphaned TLD patterns like 'D.md', 'R.io', 'X.ai'
that follow non-alphanumeric characters and wrap them in <code> tags.
Pattern: ([^a-zA-Z0-9]|^)([A-Za-z]\.(?:extensions))(?=[^a-zA-Z0-9/]|$)
Tests added:
- 'wraps orphaned TLD pattern after special character' (R&D.md → R&<code>D.md</code>)
- 'wraps orphaned single-letter TLD patterns' (X.ai, R.io)
Code review fixes:
1. Escape filename with escapeHtml() before inserting into <code> tags
- Prevents HTML injection if regex ever matches unsafe chars
- Defense in depth (current regex already limits to safe chars)
2. Escape extensions with escapeRegex() before joining into pattern
- Prevents regex breakage if extensions contain metacharacters
- Future-proofs against extensions like 'c++' or 'd.ts'
Add tests documenting regex safety boundaries:
- Filenames with special chars (&, <, >) don't match
- Only [a-zA-Z0-9_.\-./] chars are captured
Two layers were causing spurious link previews for file references like
`README.md`, `backup.sh`, `main.go`:
1. **markdown-it linkify** converts `README.md` to
`<a href="http://README.md">README.md</a>` (.md = Moldova TLD)
2. **Telegram auto-linker** treats remaining bare text as URLs
## Changes
### Primary fix: suppress auto-linkified file refs in buildTelegramLink
- Added `isAutoLinkedFileRef()` helper that detects when linkify auto-
generated a link from a bare filename (href = "http://" + label)
- Rejects paths with domain-like segments (dots in non-final path parts)
- Modified `buildTelegramLink()` to return null for these, so file refs
stay as plain text and get wrapped in `<code>` by the wrapper
### Safety-net: de-linkify in wrapFileReferencesInHtml
- Added pre-pass that catches auto-linkified anchors in pre-rendered HTML
- Handles edge cases where HTML is passed directly (textMode: "html")
- Reuses `isAutoLinkedFileRef()` logic — no duplication
### Bug fixes discovered during review
- **Fixed `isClosing` bug (line 169)**: the check `match[1] === "/"`
was wrong — the regex `(<\/?)}` captures `<` or `</`, so closing
tags were never detected. Changed to `match[1] === "</"`. This was
causing `inCode/inPre/inAnchor` to stay stuck at true after any
opening tag, breaking file ref wrapping after closing tags.
- **Removed double `wrapFileReferencesInHtml` call**: `renderTelegramHtmlText`
was calling `markdownToTelegramHtml` (which wraps) then wrapping again.
### Test coverage (+12 tests, 26 total)
- `.sh` filenames (original issue #6932 mentioned backup.sh)
- Auto-linkified anchor replacement
- Auto-linkified path anchor replacement
- Explicit link preservation (different label)
- File ref after closing anchor tag (exercises isClosing fix)
- Multiple file types in single message
- Real URL preservation
- Explicit markdown link preservation
- File ref after real URL in same message
- Chunked output file ref wrapping
Closes#6932
Tables render poorly in Telegram (pipes stripped, whitespace collapses).
This adds a 'tableMode' option to markdownToIR that converts tables to
nested bullet points, which render cleanly on mobile.
- Add tableMode: 'flat' | 'bullets' to MarkdownParseOptions
- Track table state during token rendering
- Render tables as bullet points with first column as row labels
- Apply bold styling to row labels for visual hierarchy
- Enable tableMode: 'bullets' for Telegram formatter
Closes #TBD
