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f171c147f5
Selecting text in a Japanese or Chinese layout now shows a menu above the selection: Ruby, Emphasis, and for Japanese, Warichu and Combine. Ruby opens an input to add, change or remove the reading; Emphasis opens a list of marks with icons; Warichu and Combine toggle on the selection. The renderer exports the selection bounds so the menu can centre on them, and new icons draw each emphasis mark. A reading had to cover a single span, so putting emphasis on part of a word blocked furigana on it. A reading can now cover adjacent spans of different styles: - Applying a reading gives the selected spans one new ruby-group id. Splitting a span keeps the id. Spans without one, as in every existing file, keep one base per span; matching readings alone never join, so per-character readings such as 天天 stay apart. - The span binary marks a span that joins the previous base with bit 2 of the ruby flags byte, so the format keeps its size. - Paragraph::ruby_groups defines a base for the renderer. Horizontal placement, long-reading spacing, paint, bounds, justification, overflow and line breaks use it, as do the vertical base units, ruby layout and column breaks. - The editor accepts a reading over any selection without readings or warichu, or over a whole base. Warichu still needs one span. - HTML and foreignObject draw one ruby per base, CSS code generation writes one set of rules per base, and SVG export draws one reading per line of a base through the new ruby-x and ruby-width keys. AI-assisted-by: claude-opus-5-5