Fix #5360: Type on a Path Options has a Preview checkbox

With Preview on, the selected type on a path follows Effect, Flip, Align
to Path and Spacing while the dialog is open. Cancel puts it back with no
history step; OK keeps the previewed values as one undo step. Preview
starts off. The public pages list no Preview for this dialog, so this is
a VectorCraft choice, recorded as such in the parity docs.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

docs/type-parity.md

@@ -1,6 +1,6 @@
 # Type parity
 
-> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-11-02 · **Change:** minor (font-family fields accept the mouse wheel, #5253; scores and estimates unchanged) · **Target:** Adobe Illustrator 2026 (30.x)
+> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-11-03 · **Change:** minor (Type on a Path Options has a Preview checkbox, #5360; scores and estimates unchanged) · **Target:** Adobe Illustrator 2026 (30.x)
 
 Type is Illustrator's largest single area by use (weight 13 of 105 across "Type core" and "Type advanced" in
 [target-app-parity.md](target-app-parity.md)). This checklist lists the features one by one. Status is from the
@@ -25,7 +25,7 @@ against Illustrator's public documentation; **estimated** unless noted.
 | Area Type Options (rows, columns, inset, first baseline, Text Flow by rows or by columns, Auto Size, Shrink Text to Fit) | done | Text Flow fills the cells down each column first (By Columns, the default, as files from before it open) or across each row first (By Rows), in the dialog and `text.areaOptions {flow}` (#4978); the commands that make or restyle type say when it does not fit its frame; MCP `add_text` takes Auto Size and Shrink Text to Fit (#1471) |
 | Threaded text, Fit Headline, Text Wrap | done | Fit Headline sees wrapping in a frame one line tall (#1444); a thread holds area type and type on a path in any mix, as Illustrator links type in an area or along a path ([help](https://helpx.adobe.com/illustrator/using/manage-text-area.html)) |
 | Threading from the ports: selected area type and type on a path show an in port and an out port, empty, with an arrow on a side where the frame is threaded, or with a red "+" in the out port when the text doesn't fit; a click on either port loads the text; a click on a closed path, area type or type on a path threads into it, a click on empty canvas makes a frame of the same kind, shape and size there, a drag draws a rectangular frame; the frame placed comes after the clicked one from its out port and before it from its in port (the story then starts there); Escape or another tool cancels; a double-click on a threaded port breaks the thread there | partial | #2572: the Selection tool, `text.thread.add {from, to?, rect?, at?, before?}`, as the reference app's help describes ports and threading ([archived help, Threading text between objects](https://web.archive.org/web/20210119051048/https://helpx.adobe.com/illustrator/using/creating-text.html), [create text threads](https://helpx.adobe.com/illustrator/desktop/design-with-text/add-manage-text/create-text-threads-between-objects.html)); area type's in port sits on the left side below the top-left corner, type on a path's just before its start bracket; Show Text Threads draws its lines between the same ports; with more than 1,000 such objects selected no ports are drawn. a double-click on a port where the frame is threaded breaks the thread there, the story flowing into the frames before the break and the frames after it left empty, still threaded with each other when two or more (`text.thread.break`, [archived help](https://web.archive.org/web/20220127090642/https://helpx.adobe.com/illustrator/using/creating-text.html)). Remaining: the ports only take clicks with the Selection tool, and the loaded cursor borrows the I-beam until it's drawn |
-| Type on a Path effects and options; brackets | done | #429 |
+| Type on a Path effects and options; brackets | done | #429; Type on a Path Options has a Preview checkbox (#5360, a VectorCraft choice: the public pages list none) |
 | Character and Paragraph panels, styles with overrides | done | Character-style Auto-leading resets, partial definitions, local leading overrides, override markers, Undo/Redo and native serialization have regression coverage; differing paragraph alignments leave the shared alignment buttons unselected (headless regressions, full integration CI and visual review pass); mixed-value display for other paragraph fields remains missing |
 | Character size and horizontal scale after object/group scaling | done | #1034: fields and setters compensate the stored affine; point size follows the transformed em-height axis, not the glyph ink bounds. Range edits, keyboard increments, leading and baseline shift use document points; rotation, reflection and shear remain editable. |
 | Preserve font sizes while scaling a group | missing | Separate enhancement; scaling still scales text with the other artwork. |
@@ -76,6 +76,7 @@ Character Styles menu New/Redefine and footer New capture the first selected cha
 
 | Date | Change | Summary |
 |---|---|---|
+| 2026-11-03 | minor | Type on a Path Options has a Preview checkbox: the type follows the fields while it is on, Cancel restores it, OK is one undo step (#5360, a VectorCraft choice: the public pages list none); scores and estimates unchanged. |
 | 2026-11-02 | minor | The wheel over Character, Properties and Control font-family fields changes selected text, one undo step per notch (#5253); scores and estimates unchanged. |
 | 2026-11-01 | minor | The Type and Vertical Type tools make area type in a clicked closed path and type on a path along a clicked open one, with their own pointers; each type tool has its own icon; scores unchanged (estimated) |
 | 2026-10-31 | minor | Units › East Asian Type acts (#394): Q and Ha (a quarter of a millimetre each) are units that preference offers; scores unchanged |