* feat: KaTeX math rendering for $..$ and $$..$$ in chat and previews (fixes#347)
- Stash math delimiters before markdown pipeline, restore as .katex-block/.katex-inline elements
- KaTeX JS lazy-loaded from CDN on first math block (mirrors mermaid pattern)
- KaTeX CSS loaded eagerly in <head> to prevent layout shift
- SRI hashes on both CDN tags
- throwOnError:false — bad LaTeX degrades to code span
- Supports $$, $, \\(...\\), \\[...\\] delimiters
- 18 new tests, 831/831 passing
* fix: remove invalid \' escape sequences in math stash lines
Lines 311, 314, 316, 317 had \' (backslash-quote) instead of plain '
in the arrow function bodies. This is a JS syntax error — node --check
fails with 'Invalid or unexpected token'. Likely caused by a
serialization artifact during code generation.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
* fix: swap stash order (fence before math) to protect code spans; add renderKatexBlocks to workspace preview
- static/ui.js: fence_stash now runs BEFORE math_stash so dollar signs
inside backtick code spans are not extracted as math. Previously
`$x$` would render as KaTeX inside a <code> tag instead of
showing the literal string $x$.
- static/workspace.js: add requestAnimationFrame(renderKatexBlocks)
after markdown preview renders so math works in workspace file
previews, not only in chat messages.
* feat: KaTeX math rendering + stash order fix + workspace wiring (#352)
- tests/test_issue347.py: 11 new tests (29 total) covering fence-before-math
ordering, workspace.js renderKatexBlocks call, stash token distinctness,
false-positive prevention, safe-tags boundary check
- CHANGELOG.md: v0.50.15 entry; 870 tests total (up from 841)
* fix: use literal null byte (\x00M) in math stash token — matches restore regex
The original PR's second commit (fix: remove invalid \' escapes) accidentally
doubled the backslash in the math stash tokens: '\\x00M' is a 5-char string
(backslash + x + 0 + 0 + M) but the restore regex /\x00M/ expects a null byte.
Result: $...$ in messages produced visible \x00M0\x00 tokens instead of
KaTeX spans.
Changed all 4 math stash return statements to use '\x00M' (single backslash =
null byte, same convention as fence_stash's '\x00F').
Also updates test_stash_tokens_distinct to check for the correct pattern.
* fix: add null-byte token test; update CHANGELOG to v0.50.15 with fixes
- tests/test_issue347.py: add test_math_stash_token_uses_single_backslash_null_byte
to catch the \\x00M double-backslash regression; 30 tests total (up from 29)
- CHANGELOG.md: v0.50.15 entry documents all fixes including the token bug
and workspace preview wiring; 871 tests total
---------
Co-authored-by: Nathan Esquenazi <nesquena@gmail.com>
Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
d0e08fee88