Type: Optical Margin Alignment hangs punctuation at the ends of type on a path

Optical Margin Alignment and Roman Hanging Punctuation hung punctuation
in point and area type only. Type on a path kept its first and last
glyphs inside its brackets with either option on.

When Optical Margin Alignment is on, or the first paragraph has Roman
Hanging Punctuation on, the glyphs at the ends of left-to-right type on
a path now hang outside its brackets by the same amounts, measured
along the path. The type hangs at the start bracket when its line is
placed there, hangs at the end bracket when the line is placed there,
and hangs at both when it is centered. Glyphs that hang past the end
bracket do not make the type overflow. On an open path a hang stops at
the path's end, and on a closed path the two hangs together take at
most the stretch between the end and start brackets. SVG export writes
type on a path that hangs as outlines, with a warning.

Docs: docs/mcp.md, docs/type-parity.md, docs/target-app-parity.md.

docs/mcp.md

@@ -3856,7 +3856,13 @@ Left-aligned lines hang at their left margin, right-aligned lines hang at their
 justified lines hang at both. In vertical type the margins are the top and bottom of a column. The space that
 justification adds between glyphs leaves out the gaps next to a hanging punctuation mark. Lines break where they did
 without it, and a line of one glyph does not hang. East Asian commas and full stops hang only through burasagari, and
-a line that ends in one hangs only at its start. Type on a path and right-to-left paragraphs are laid out as before.
+a line that ends in one hangs only at its start. Type on a path hangs at its brackets, measured along the path:
+left-aligned, Auto, Justify All and Justify with Last Line Aligned Left type hangs at the start bracket, right-aligned
+and Justify with Last Line Aligned Right type hangs at the end bracket, and centered and Justify with Last Line Aligned
+Center type hangs at both. Glyphs that hang past the end bracket do not make the type overflow. On an open path a
+hang stops at the path's end, and on a closed path the two hangs together take at most the stretch between the end
+and start brackets. SVG export writes type on a path whose glyphs hang as outlines, with a warning. Type on a path
+whose first paragraph runs right to left, and right-to-left paragraphs of point and area type, are laid out as before.
 New type and documents from before it have it off, and it is saved only when on. One undo step.
 
 ```json
@@ -3871,9 +3877,11 @@ paragraphs the punctuation Optical Margin Alignment hangs hangs outside the marg
 hyphens, full stops and commas wholly; asterisks, tildes, ellipses, en and em dashes, colons and semicolons by half),
 on the same sides (left-aligned lines at their left, right-aligned at their right, centered and justified at both), and
 letters don't hang. With Optical Margin Alignment on as well, the letters hang too. East Asian punctuation hangs only
-through burasagari; type on a path and right-to-left paragraphs are laid out as before. Off by default, saved with the
-paragraph (`roman_hanging` in `para`) only when on, carried by paragraph styles, and turned off by Reset Panel. One undo
-step. The menu item is checked while the paragraph the Paragraph panel shows has it on.
+through burasagari. When the first paragraph of type on a path has Roman Hanging Punctuation on, the type hangs its
+punctuation at its brackets as Optical Margin Alignment does, and no letters. Type on a path whose first paragraph runs
+right to left, and right-to-left paragraphs of point and area type, are laid out as before. Off by default, saved with
+the paragraph (`roman_hanging` in `para`) only when on, carried by paragraph styles, and turned off by Reset Panel.
+One undo step. The menu item is checked while the paragraph the Paragraph panel shows has it on.
 
 ```json
 {"name":"run_command","arguments":{"command":"text.setFormat","params":{"romanHangingPunctuation":true}}}

docs/target-app-parity.md

@@ -654,6 +654,7 @@ Moved from the ROADMAP's "Shipped so far" on 2026-10-10. Update it when a featur
   For Auto Size area type in columns, the bisection for the frame's height runs on the lines of the one-column layout, and its result is checked with at most two layouts of the columns. When the text wraps around objects or does not fit the one-column layout, or when the check fails, the columns are laid out at every step of the bisection, as before. Typing at the start of a story of 50,000 characters in 2 columns took 1,670 ms a keystroke and now takes 292 ms (release build, `auto_height_in_columns_typing_timing`).
   Exports to PDF, EPS, SVG, EMF, WMF and the raster formats warn about the area type and type on a path that they draw without the text that doesn't fit, and give their ids, as Print and Print Preview do.
   An edit copies a thread's story only when it changes one of the thread's frames: with a story of 50,000 characters threaded through 8 frames with a style change at every word, moving another object took 7.8 ms and now takes 0.013 ms, and a frame of a drag took 7.2 ms and now takes 0.012 ms (release build, `threaded_story_edit_timing`).
+  With Optical Margin Alignment on, or Roman Hanging Punctuation on in the first paragraph, the glyphs at the ends of left-to-right type on a path hang outside its brackets, measured along the path. The type hangs at the start bracket when its line is placed there, hangs at the end bracket when the line is placed there, and hangs at both when it is centered. Glyphs that hang past the end bracket do not make the type overflow, and a hang stops at an open path's end. SVG export writes such type as outlines.
   The frames of threaded text share one Optical Margin Alignment setting: turning it on or off in one frame sets it in every frame, threading frames gives the thread its first frame's setting, and frames taken out of a thread keep it.
   Type › Optical Margin Alignment (`type.opticalMarginAlignment`) hangs the punctuation and letter edges at the ends of a type object's lines outside its margins: at the left of left-aligned lines, at the right of right-aligned lines, and at both ends of centered and justified lines, in point and area type of left-to-right paragraphs. Quotation marks, hyphens, full stops and commas hang wholly; asterisks, tildes, ellipses, en and em dashes, colons and semicolons hang by half; and A, V, W, Y, v, w and y hang by a tenth of their width. It is off by default and saved with the type object.
   The Paragraph panel menu's Hyphenation… (`ui.hyphenation`, `text.setFormat {wordsLongerThan, afterFirst, beforeLast, hyphenLimit, hyphenationZone, hyphenateCapitalized}`) sets each paragraph's hyphenation limits: the shortest word that breaks, the fewest letters on each side of the hyphen, the most hyphenated lines in a row, a zone at the right edge where the Single-line Composer breaks before a word instead of hyphenating it, and whether capitalized words break. The defaults are words longer than 5 letters, 3 letters on each side, no limit or zone, and capitalized words hyphenated; paragraph styles and the native file keep the options.

docs/type-parity.md

@@ -35,7 +35,7 @@ against Illustrator's public documentation; **estimated** unless noted.
 | Fallback glyphs keep the text's weight and slant | done | #2491: a character from a fallback face is set in that family's face nearest the run's weight and slant; Bold Italic of a missing family is drawn Bold (Source Sans 3 has no Bold Italic) rather than Italic |
 | Colour fonts (OpenType SVG / COLR) | partial | |
 | Every-line and Single-line composers | done | tuned by eye, never compared side by side |
-| Optical Margin Alignment | done | Type › Optical Margin Alignment, `type.opticalMarginAlignment`: per type object, with one setting for all the frames of a thread, in point and area type of left-to-right paragraphs; type on a path and right-to-left paragraphs do not hang |
+| Optical Margin Alignment | done | Type › Optical Margin Alignment, `type.opticalMarginAlignment`: per type object, with one setting for all the frames of a thread, in point and area type of left-to-right paragraphs, and at the brackets of type on a path whose first paragraph runs left to right; right-to-left paragraphs of point and area type, and type on a path whose first paragraph runs right to left, do not hang |
 | Roman Hanging Punctuation | done | Paragraph panel menu › Roman Hanging Punctuation, `text.setFormat {romanHangingPunctuation}` (#2756): per paragraph, Optical Margin Alignment's punctuation and amounts without the letters; paragraph styles carry it. Evidence: `tests::roman_hanging_punctuation_hangs_punctuation_but_not_letters`, `typecmd::area_tests::roman_hanging_punctuation_is_set_per_paragraph_and_saved_only_when_on` |
 | Hyphenation… and Justification… options | done | Hyphenation… (`ui.hyphenation`, `text.setFormat`) sets each paragraph's Words Longer Than, After First, Before Last, Hyphen Limit, Hyphenation Zone (Single-line Composer only) and Hyphenate Capitalized Words, and paragraph styles carry them (#2310). Justification… (`ui.justification`, `text.setFormat`, #2755) sets Word Spacing, Letter Spacing and Glyph Scaling (Minimum, Desired, Maximum), Auto Leading and Single Word Justification; Desired applies to every line, justified lines and the Every-line Composer use the ranges. Vertical type isn't glyph scaled; type on a path doesn't use them. Evidence: `crates/text/src/tests_justify.rs`, `dialogs::justification::tests` |
 | Tab stops and leaders; Tabs panel | partial | Tabs panel and stops with leaders in the model (`text.tabs.set`); a stop drags from where the press landed (#1458); leaders fill the tab's gap, repeated on a grid so they line up from line to line (#1877) |