Type: an opening bracket at a paragraph's start is set flush too, JIS X 4051's principle (#633)

With Line-end Punctuation Half Width, an opening bracket that starts a paragraph now drops the
half-em space before it, as one starting a wrapped line already does (#417): its face starts at
the first-line indent, JLREQ 3.1.5's Figure 71 ① (the principle JIS X 4051 adopts), as decided in
#633. Paragraph-start brackets in documents set with this mojikumi move half an em toward the line
start.

Two mojikumi tests used a bracket at a paragraph's start to test something else (consecutive
brackets, the Japanese–Latin space); they now set it inside the line.

Co-Authored-By: Claude Opus 5.5 <[email protected]>

ROADMAP.md

@@ -146,7 +146,7 @@ grade by behaviour against `plan/illustrator/`, not by whether a menu item exist
   - Pathfinder (10 exact curve booleans), Offset, Outline Stroke, Simplify, Clean Up, Split Into Grid, Divide Objects Below. Object › Path › Remove Anchor Points (`path.removeAnchors`) removes the direct-selected anchors without opening their paths (the Delete key still deletes them with their segments): the neighbours keep their handle directions and their facing handles are refitted so one cubic follows the two old segments, and straight sides stay straight. The Delete Anchor Point tool uses the same refit. The Control bar, the contextual task bar, the Properties quick actions and the canvas context menu offer it when anchors are selected. With anchors selected, the Control bar and the Properties panel also convert them to corner or smooth (`path.convertAnchors`), connect end points (Join) and cut the path at them (`path.cutAtAnchors`, also on the task bar and the context menu): a closed path opens there and an open one becomes one path per piece, each cut leaving one of its two coincident anchors selected so a drag pulls the path apart.
   - Live effects with previewing dialogs: Distort & Transform, Path, Convert to Shape, 15 Warp styles, Round Corners, Scribble, Effect → Pathfinder (all 10 operations, live on groups; several loose objects are grouped first, in one undo step), Color Adjustments (Brightness/Contrast, Curves, Levels, Hue/Saturation, Shift to Color, Temperature/Tint, on vectors, live type and embedded images), and raster drop shadow, glows and feather. SVG and PDF export keep live effects (geometry baked; SVG raster effects as filters).
 - **Type:** Text Wrap, Type on a Path effects (Rainbow/Skew/3D Ribbon/Stair Step/Gravity) and Options (Flip, Align to Path, Spacing; OK keeps the type where it is), type on a path's start, centre and end brackets (Selection and Direct Selection drag them to set where the type runs, slide it along its path and, across the path, flip it: #429), Character and Paragraph Styles (override-preserving redefine), paragraph attributes per paragraph (alignment, indents, spacing, hyphenation, hanging punctuation, tab stops, paragraph style, direction, mojikumi and leading model; the Paragraph, Tabs and Paragraph Styles panels act on the paragraphs the Type tool's selection or caret touches, Return continues the paragraph's style, threads and SVG keep them), Area Type Options (rows/columns/inset/first baseline, vertical Align Top/Center/Bottom/Justify per row/column, reflowing non-rectangular frames and text wrap), threaded text across any closed shapes, Fit Headline, the Every-line Composer for justified and ragged text (paragraph-wide breaks for an even rag, Single-line per object from the Paragraph panel menu or `text.setFormat {composer}`). Area type resizes like Illustrator's type areas: a bounding-box handle drag (Selection tool) or Area Type Options Width/Height size the frame and the text reflows at its size (threads too); Direct Selection drags a frame corner or edge (`text.reshapeArea`). Point type still scales. Auto Size: the frame height follows the text after every edit, in the same undo step (rectangular frames of horizontal type in one row; columns get the least height that holds them; a height set by hand or threading turns it off), and the "Auto Size New Area Type" preference gives it to new area type. Shrink Text to Fit (beyond Illustrator): overflowing area type scales its sizes, leading and baseline shifts down by the largest factor (in 0.1 pt steps of the first run, down to a minimum percentage) that fits, at layout time so every export sees it. `text.areaOptions` and `document.inspect` report overflow and the shrink factor. The Selection tool shows the type widget beside selected type's bounding box (hollow on point type, filled on area type); double-clicking it converts between them (Type › Convert To Area Type / Convert To Point Type), keeping the text and its styles in place. Variable fonts list every named instance as a style of their family (Figtree Light to Black and their italics, Bahnschrift, Segoe UI Variable), and the instance chosen is shaped, drawn, outlined and measured at its axis settings; PDF and SVG embed it as that instance. Variation axis sliders are not done. Beyond Illustrator: inline graphics (`text.insertInline`, Type ▸ Insert Inline Symbol) set a document symbol in a run of type as one character that flows, wraps and justifies like a glyph (InDesign-style inline objects, e.g. mana symbols in card rules text): sized to a multiple of the font size, centred on the cap height, opening up tall lines, following Redefine Symbol; a character of its run's size for Character Alignment and Top-to-Top leading, placed by the bidi reordering in right-to-left text (a neutral U+FFFC); drawn on the canvas, kept as live text plus a `<use>` in SVG and as vector art in PDF; Backspace removes it whole. Hebrew and Arabic are laid out right to left with the Unicode bidirectional algorithm (embedded Latin and numbers keep their direction, lines put in visual order after wrapping) in point, area and path type, with caret, selection and arrow keys in visual order; each paragraph's direction comes from its first strong character unless Paragraph Direction sets it (Paragraph panel with Show Indic Options, `text.setFormat {direction}`), and new type aligns to the start of its direction. SVG export outlines right-to-left text. Font Size and Leading are combo boxes in the Character and Properties panels (Font Size in the Control bar too, beside the Character link, font family and style): type, step with ↑/↓ or the spinner, scrub the label, or pick a preset (6–72 pt, shown in the type unit; Leading also Auto), each pick one undo step; Kerning and Tracking list -100…200; a size, leading, kerning or tracking the selected text doesn't share shows blank (#458).
-- **Interface languages, vertical type:** VectorCraft ▸ Language (or Preferences ▸ User Interface) picks Automatic (the system locale) or a registered language, persisted as `interfaceLanguage`. Translations come from per-language catalogs (`i18n/*.tsv`): Traditional and Simplified Chinese, Japanese, Spanish (neutral international Spanish, for every `es-*` locale), French (every `fr-*` locale), Italian (every `it-*` locale) and Russian (every `ru-*` locale) cover the whole interface, Czech and Brazilian Portuguese every menu label, Brazilian Portuguese the shell's `tl!` literals too (tested); Spanish, French, Italian and Russian also translate status-bar and error messages as they are shown (`@msg` templates, every message literal tested; the messages themselves stay English for agents); untranslated text stays English. Japanese and Chinese glyphs come from the craft-fonts build input (release builds) or the installed fonts, Czech, Spanish, French, Italian and Russian ones from the bundled UI fonts. The web app follows the browser's languages (or `?lang=`). The Basic toolbar's Type button holds Vertical Type in its flyout. Vertical Type, Vertical Area Type and Vertical Type on a Path create vertical text (columns right to left, upright CJK glyphs and marks with `vert` alternates, Latin and longer numbers on their side, two- and three-digit numbers set as tate-chu-yoko in one em of the column (kept whole when justified), upright glyphs centred on the column (tracked or justified too), point type's anchor on the first column's centre line); kinsoku (the strict set) applies to horizontal and vertical Japanese, and justified Japanese lines spread their room between characters (not inside Latin words); Paragraph panel › Mojikumi Set (shown with Preferences › Type › Show East Asian Options, `text.setFormat {mojikumi}`): None or Line-end Punctuation Half Width (new type's default, as in Illustrator; older documents and imported text keep None) shares one half-em space between consecutive punctuation, sets a closing mark ending a line half width and an opening bracket starting a wrapped line flush with its start, and puts a quarter em between Japanese and Latin letters or digits; Paragraph panel menu › Top-to-Top / Bottom-to-Bottom Leading measures leading from em box top to top (area type's first line touches the frame) or from baseline to baseline (new type in a Japanese interface starts top to top, with em box centre character alignment, #432); Paragraph panel menu › Burasagari None / Regular / Force (`text.setFormat {burasagari: "none"|"standard"|"forced"}`) hangs an East Asian comma or full stop (、。，．､｡) ending an area type line outside it, Regular (new type's default) when it doesn't fit and Force always (the rest of the line then fills the measure; closing brackets and Latin punctuation don't hang); Character panel menu › Character Alignment (with the East Asian options; `text.setFormat` or `text.setRangeStyle {charAlign}`) lines characters smaller than the largest on their line up on the Roman baseline, the em box top/right, centre or bottom/left, or the ICF (ideographic character face) top/right or bottom/left, from the font's BASE table or, without one, the average ink box of some ideographs and kana; Type ▸ Type Orientation switches existing text; caret, selection, hit testing and arrow keys follow the writing direction. Vertical text exports to PDF as real text and to SVG as outlines.
+- **Interface languages, vertical type:** VectorCraft ▸ Language (or Preferences ▸ User Interface) picks Automatic (the system locale) or a registered language, persisted as `interfaceLanguage`. Translations come from per-language catalogs (`i18n/*.tsv`): Traditional and Simplified Chinese, Japanese, Spanish (neutral international Spanish, for every `es-*` locale), French (every `fr-*` locale), Italian (every `it-*` locale) and Russian (every `ru-*` locale) cover the whole interface, Czech and Brazilian Portuguese every menu label, Brazilian Portuguese the shell's `tl!` literals too (tested); Spanish, French, Italian and Russian also translate status-bar and error messages as they are shown (`@msg` templates, every message literal tested; the messages themselves stay English for agents); untranslated text stays English. Japanese and Chinese glyphs come from the craft-fonts build input (release builds) or the installed fonts, Czech, Spanish, French, Italian and Russian ones from the bundled UI fonts. The web app follows the browser's languages (or `?lang=`). The Basic toolbar's Type button holds Vertical Type in its flyout. Vertical Type, Vertical Area Type and Vertical Type on a Path create vertical text (columns right to left, upright CJK glyphs and marks with `vert` alternates, Latin and longer numbers on their side, two- and three-digit numbers set as tate-chu-yoko in one em of the column (kept whole when justified), upright glyphs centred on the column (tracked or justified too), point type's anchor on the first column's centre line); kinsoku (the strict set) applies to horizontal and vertical Japanese, and justified Japanese lines spread their room between characters (not inside Latin words); Paragraph panel › Mojikumi Set (shown with Preferences › Type › Show East Asian Options, `text.setFormat {mojikumi}`): None or Line-end Punctuation Half Width (new type's default, as in Illustrator; older documents and imported text keep None) shares one half-em space between consecutive punctuation, sets a closing mark ending a line half width and an opening bracket starting a line flush with its start (a paragraph's first line at its first-line indent, JIS X 4051's principle in JLREQ 3.1.5), and puts a quarter em between Japanese and Latin letters or digits; Paragraph panel menu › Top-to-Top / Bottom-to-Bottom Leading measures leading from em box top to top (area type's first line touches the frame) or from baseline to baseline (new type in a Japanese interface starts top to top, with em box centre character alignment, #432); Paragraph panel menu › Burasagari None / Regular / Force (`text.setFormat {burasagari: "none"|"standard"|"forced"}`) hangs an East Asian comma or full stop (、。，．､｡) ending an area type line outside it, Regular (new type's default) when it doesn't fit and Force always (the rest of the line then fills the measure; closing brackets and Latin punctuation don't hang); Character panel menu › Character Alignment (with the East Asian options; `text.setFormat` or `text.setRangeStyle {charAlign}`) lines characters smaller than the largest on their line up on the Roman baseline, the em box top/right, centre or bottom/left, or the ICF (ideographic character face) top/right or bottom/left, from the font's BASE table or, without one, the average ink box of some ideographs and kana; Type ▸ Type Orientation switches existing text; caret, selection, hit testing and arrow keys follow the writing direction. Vertical text exports to PDF as real text and to SVG as outlines.
 - **Transparency:** opacity masks (clip/invert/disable/link), exported as SVG `<mask>` and PDF soft masks.
 - **Advanced art:** live Blends (steps/distance/smooth colour, editable spine, anchor-targeted Blend tool, faithful interpolation, knockout), Envelope Distort (warp/mesh/top object, Reset, full Envelope Options, mesh handles, Edit Contents; type, images, symbols, gradients, patterns and appearance distorted everywhere), Liquify tools with options and pen pressure, Puppet Warp with rotating pins, Perspective Grid with presets, movable planes and projected type (choosing a perspective tool shows the grid; Hide Grid hides it with the tool still chosen), Gradient Mesh, Shape Builder (stroke-only open paths and lines cut the regions they cross and enclose regions of their own; filled open paths count as closed; erase mode while Alt/Option is held: a minus pointer, red highlights of what will go, a click or drag deletes the regions touched, the pieces of open lines and the edges (outline pieces between the points where paths meet, opening their paths there) it passes over, one undo step, `shapeBuilder.merge {erase}` and `shapeBuilder.regions` edges over MCP), Live Paint (every path an edge, open lines included), Image Trace (12 presets, colour layers traced in parallel; a trace past two million anchor points or an image over 64 megapixels is refused with advice rather than running out of memory, and a selection too large to outline shows its bounds (#525); Object › Image Trace › Make and Make and Expand trace at once with the Default preset, #543; with an image selected the Control bar and the Properties panel show Image Trace, whose arrow traces with any preset, Mask (`object.maskImage`: a clipping path on the image's outline, selected so its handles crop), Crop Image (`object.cropImage {trim: true}` cuts an image to its pixels that aren't fully transparent, pixel for pixel) and Embed or Unembed in place of Fill and Stroke; with an Image Trace object selected, its Preset (choosing another traces again), View, the Image Trace panel and Expand, plus Release in Properties; the five View modes (Tracing Result, with Outlines, Outlines, Outlines with Source Image, Source Image) redraw a trace on screen without tracing again, are saved with it and `imageTrace.setView` sets them, while exports and Expand keep the result; the panel's Advanced section is a header that stays open or closed as it was left (part of #641); Color mode's Palette: Limited, Full Tone (as many colours as the tones need, Less … More), Automatic (flat art with its own colours, else Full Tone; a heuristic) and Document Library (the most used colours of the document's swatches or a swatch library, filled with the swatch colours as they are), part of #641; Advanced › Create: Fills and/or Strokes, where lines up to the Stroke width trace as stroked centre lines (distance transform, thinning, a skeleton graph with spurs pruned, curve fitting; one width per line; without Fills, wider areas become stroked outlines), part of #641), pattern swatches with pattern editing mode, live Repeat (radial/grid/mirror).
 - **Paint and appearance (M3):**

crates/text/src/layout.rs

@@ -1383,10 +1383,10 @@ fn flow(cx: &mut Ctx<'_>, paras: &[Range<usize>], t: &TextObject, regions: Optio
             let est = if i < n { Metrics::of(&sg[i]) } else { pm };
             let first_line = li_para == 0;
             let ind_l = para.left_indent + if first_line { para.first_line_indent } else { 0.0 };
-            // Mojikumi: an opening bracket starting a wrapped line is set flush with the line's
-            // start (the space before it goes), and the line has that much more room.
-            if !first_line
-                && !rtl
+            // Mojikumi: an opening bracket starting a line is set flush with the line's start (the
+            // space before it goes), and the line has that much more room. At a paragraph's start
+            // that is the first-line indent: JIS X 4051's principle (JLREQ 3.1.5, Figure 71 ①).
+            if !rtl
                 && para.mojikumi == Mojikumi::LineEndHalf
                 && let Some(g) = sg.get_mut(i)
                 && g.lead <= 0.0

crates/text/src/tests_vertical.rs

@@ -353,15 +353,16 @@ fn mojikumi_halves_line_end_and_consecutive_punctuation() {
         // 」 before 「: the closing mark's space goes; 「 keeps its own.
         let a = adv("一」「二", Mojikumi::LineEndHalf);
         assert!((a[1] - 10.0).abs() < 0.01 && (a[2] - 20.0).abs() < 0.01, "{a:?}");
-        // 「「: the second bracket loses the space before it and is drawn half an em earlier.
-        let a = adv("「「一", Mojikumi::LineEndHalf);
-        assert!((a[0] - 20.0).abs() < 0.01 && (a[1] - 10.0).abs() < 0.01, "{a:?}");
-        let (on, off) = (lay("「「一", Mojikumi::LineEndHalf, vertical_type), lay("「「一", Mojikumi::None, vertical_type));
+        // 「「 inside a line: the second bracket loses the space before it and is drawn half an em
+        // earlier (at a line's start the first one would lose its own too).
+        let a = adv("一「「二", Mojikumi::LineEndHalf);
+        assert!((a[1] - 20.0).abs() < 0.01 && (a[2] - 10.0).abs() < 0.01, "{a:?}");
+        let (on, off) = (lay("一「「二", Mojikumi::LineEndHalf, vertical_type), lay("一「「二", Mojikumi::None, vertical_type));
         let along = |r: Rect| if vertical_type { r.y0 } else { r.x0 };
-        let moved = along(off.glyphs[1].outline.bounding_box()) - along(on.glyphs[1].outline.bounding_box());
+        let moved = along(off.glyphs[2].outline.bounding_box()) - along(on.glyphs[2].outline.bounding_box());
         assert!((moved - 10.0).abs() < 0.01, "vertical {vertical_type}: the second 「 is drawn half an em earlier ({moved})");
         let across = |r: Rect| if vertical_type { r.x0 } else { r.y0 };
-        let drift = across(off.glyphs[1].outline.bounding_box()) - across(on.glyphs[1].outline.bounding_box());
+        let drift = across(off.glyphs[2].outline.bounding_box()) - across(on.glyphs[2].outline.bounding_box());
         assert!(drift.abs() < 0.01, "vertical {vertical_type}: and not moved across the line ({drift})");
         // Text without punctuation is untouched.
         assert_eq!(adv("一二", Mojikumi::LineEndHalf), adv("一二", Mojikumi::None));
@@ -394,8 +395,8 @@ fn mojikumi_spaces_japanese_from_latin_by_a_quarter_em() {
         // Latin first, and nothing after the last character of the line.
         assert_eq!(extra("AB雅").iter().map(|x| x.round()).collect::<Vec<_>>(), [0.0, 5.0, 0.0]);
         assert_eq!(extra("雅A").iter().map(|x| x.round()).collect::<Vec<_>>(), [5.0, 0.0]);
-        // Punctuation takes no Japanese–Latin space (the closing bracket isn't at the line's end).
-        assert!(extra("「A」です").iter().all(|x| x.abs() < 0.01), "{:?}", extra("「A」です"));
+        // Punctuation takes no Japanese–Latin space (neither bracket is at the line's start or end).
+        assert!(extra("で「A」です").iter().all(|x| x.abs() < 0.01), "{:?}", extra("で「A」です"));
     }
     // A tate-chu-yoko block is set as a Japanese character, with no space inside or around it.
     let on = lay("第10回", Mojikumi::LineEndHalf, true);
@@ -405,8 +406,9 @@ fn mojikumi_spaces_japanese_from_latin_by_a_quarter_em() {
 
 /// Mojikumi (JLREQ 3.1.5): with Line-end Punctuation Half Width, an opening bracket starting a
 /// wrapped line is set flush with the line's start (the space before it goes), giving the line half
-/// an em more room; at the start of a paragraph it keeps its full width. Horizontal and vertical.
-/// Needs a font with full-width Japanese punctuation (skipped without one).
+/// an em more room; at the start of a paragraph too, so its face starts at the first-line indent
+/// (JIS X 4051's principle, Figure 71 ①). Horizontal and vertical. Needs a font with full-width
+/// Japanese punctuation (skipped without one).
 #[test]
 fn mojikumi_sets_an_opening_bracket_flush_at_the_start_of_a_wrapped_line() {
     use vectorcraft_doc::Mojikumi;
@@ -436,9 +438,13 @@ fn mojikumi_sets_an_opening_bracket_flush_at_the_start_of_a_wrapped_line() {
         // The half em it gave up lets 六 stay on the line.
         assert_eq!(on.glyphs[6].line, on.glyphs[3].line, "vertical {vertical_type}");
         assert_ne!(off.glyphs[6].line, off.glyphs[3].line, "vertical {vertical_type}");
-        // At the start of a paragraph the bracket keeps its full width.
+        // At the start of a paragraph too: half width, its face half an em earlier than with
+        // Mojikumi None, so it starts at the first-line indent.
         let first = lay("「一」", Mojikumi::LineEndHalf, vertical_type);
-        assert!((first.glyphs[0].advance - 20.0).abs() < 0.01, "vertical {vertical_type}: {}", first.glyphs[0].advance);
+        assert!((first.glyphs[0].advance - 10.0).abs() < 0.01, "vertical {vertical_type}: {}", first.glyphs[0].advance);
+        let solid = lay("「一」", Mojikumi::None, vertical_type);
+        let moved = along(solid.glyphs[0].outline.bounding_box()) - along(first.glyphs[0].outline.bounding_box());
+        assert!((moved - 10.0).abs() < 0.01, "vertical {vertical_type}: the paragraph's 「 is drawn half an em earlier ({moved})");
     }
 }