- layoutTextItem now sizes a text item to the true font line height (A + D)
instead of the cap box: the line stack starts at lineBoxTopInset (the
ascender headroom, max(0, fontAscent - fontLineHeight)) and the returned
height is padded by the last line's descender. Inter-line advance is
unchanged and per-line frames stay the cap box, so the baseline draw,
decorations, reveal mask, and inline attachments translate consistently;
the page grows.
- Size inline custom emoji to ~the font line height
(font.ascender - font.descender + 4*pointSize/17) so they fit the taller
line box instead of overflowing it; the line is not inflated.
- Add a dedicated code-block text style for rich messages (monospace font +
codeBlock theme attribute) threaded through the rich-data bubble and send
preview; unify the bubble code-block/separator colors.
- Adjust inter-block spacings and assorted V2 layout/divider details.
- Document the true-font-height box and emoji sizing in CLAUDE.md.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
isaacandClaude Opus 4.8
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