drawn_at aligns each source piece once instead of re-reading the span
for every drawn byte, so a right press near a long paragraph's start
stays linear. A newer press drops an older pending open-block lookup.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
MarkdownDocument::format toggles bold, italic, code, strike, underline,
link and image at the selection, or clears every inline mark from the
blocks it touches, following Typora's toggleStyle: off inside the style,
wrap a selection, take the caret's word or write an empty pair. Code,
math, HTML and front matter refuse, as does a selection crossing a
block, a link or another mark. An open block keeps its field open.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Round 3 of R4.5 found five ways the reverse reading drifted from
markdown-rs: kept indents and marks were eaten as joins, autolink text
was decoded, table code kept its escaped pipes, decoded white space
could not join or drop, and C0/C1 numeric references kept their
controls. Matching now tries an equal character first, a drawn space
against any line end next, and drops white space decoded or not;
autolinks read as written, table cell code reads \| as |, and numeric
references follow markdown-rs. The reviewer's probes are regressions.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Each piece records how its source decodes: Markdown's escapes and
references for text, HTML's for an HTML block's runs, none for code
spans, cut as CommonMark cuts their end spaces. Matching runs from the
piece's end, so quote marks and indents at a line's start are never
taken for text, and an alert's text needs no moved position: alert()
takes no source again.
Lines split on LF, CRLF and CR alike; LineMap matches each drawn line
to the written line it ends once, so an HTML block maps in linear time
and a tab cut to spaces lands on the tab. A write-back refuses the
press when the pressed block's kind, text or drawing changed.
The hostile HTML test measures growth: a fixed 2 s budget failed under
the full suite's load on the old code too.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Each drawn character finds its written one, skipping only white
space, escapes and quote marks, so a press lands on the character
itself. Code, front matter and link definitions read back line for
line. An HTML block keeps each text run's source byte, and an alert
keeps its text past the marker; alert() now takes the source.
A secondary press refuses a target its write-back changed, and its
focus no longer opens an empty document. Run's element stack moves to
tree/stack.rs and the HTML-block reader to tree/html_block.rs.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Each drawn text piece keeps its written span, so a press maps back to a
source byte. A secondary press opens nothing: it moves the caret there and
emits DocumentEvent::Pointed with the block's kind, link, picture and
whether it lies in a table or code. Block nodes count from their own start.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
ZacharyZhang-NYandClaude Opus 5.5