Dynamic Text, Dynamic Text Presets, Center on Top and Center on
Bottom, and Area Type Options with Block on checked each object for a
thread with its own search of the document's threads. A selection of
many objects in a document with many threads repeated that search for
each object, in the commands' enabled checks as well as when they ran.
The checks now build one lookup from frame to thread for the whole
selection. An object counts as threaded by the first thread that lists
it, as before, so the commands refuse the same frames, list them in the
same order and leave the document and the undo history as they were.
Break Text checked every thread of the document for each selected type
object to skip threaded frames, and Remove Breaks searched every thread
for each selected object to find its story, so the work grew with the
number of selected objects times the number of threaded frames.
Both commands now index the document's threads once per command: Break
Text tests membership in that index, and Remove Breaks takes the story
from the indexed thread through threads::story_in, the second half of
story_of. Split Text at Cursor, which takes one object, checks it once
as before. The results are unchanged.
Tests: Break Text on two threaded frames and six point type objects
skips the frames unchanged, breaks the rest in place as one undo step
and goes through the threads once; Remove Breaks reads the selected
story as one text and the other objects on their own, going through
the threads once; Split Text at Cursor refuses a threaded frame.
Several threaded-text paths in threads.rs searched a list once for each
frame, so their work grew with the product of the frame count and the
list length:
- leave_threads (Create Outlines, Expand Appearance, Rasterize, Flatten
Transparency, symbol replacement, opening with text as outlines)
searched the threads for each frame that stayed and ran continued over
that frame's whole thread again, about n^2 frame visits for a thread of
n frames. It now marks each changed thread with one continued call,
and keeps the frames that left in a map instead of a list.
- has_thread_selection (the availability of Release Selection and Remove
Threading), with_threads, keep_shown_text and cut_to_shown, release and
remove test ids against a hash set instead of a list.
- create finds the thread of each selected frame from a table built
once, and each frame still takes in the first thread not yet merged
that lists it.
- release writes each thread back at its own index instead of searching
the thread list for an equal thread.
Marks, thread membership, frame order, text and overflow are unchanged.
A 256-frame thread that loses one frame visited 65,025 frames before
this change and at most 256 now. Six tests on many threads count the set
lookups: with a list in place of the set they make 67,650 to 258,226.
Another test compares the marks with a scan of the frames before each
one.
A paragraph format given to the empty paragraph after a frame's last
paragraph break was lost when the story flowed again: the paragraph is
shared with the next frame's first paragraph, and the next frame's old
style replaced it, in that frame and in the frames after it.
- The thread reflow also notes which frames' last paragraph changed
style, and story_paras_restyled keeps that style against the next
frame's unedited first paragraph, across unedited empty frames too.
When the same edit formats the next frame's first paragraph, that
format applies, as before.
- story_paras keeps its behavior for its other callers.
- Tests cover area type and type on a path on either side, a next frame
holding text, three frames, undo and redo, a format that changes
nothing, and numbered list counts.
Type › Dynamic Text (`type.dynamicText`, also on the Contextual Task Bar
for type on a path) scales the text by one factor so it fills the span
between its start and end brackets, and the layout fits it again after
each edit to the text, the path or a bracket. The first character's
size moves in 0.1 pt steps within 0.1 to 1,296 pt. Turning it off, or
threading the type, keeps the sizes it was drawn at.
- The model saves `dynamicText` only when on.
- SVG, the legacy .ai writer and the .ai editing data write the drawn
sizes through `vectorcraft_text::drawn`; the editing data warns that
the setting is not written.
- Shrink Text to Fit and Dynamic Text step the size the Character panel
shows when a size measures the cap height, x-height or ICF box.
Docs: docs/mcp.md, docs/type-parity.md, docs/target-app-parity.md.
Part of #4134.
While the Type tool edits a frame of threaded text, Select All selects
the text of every frame of the story, highlighted in each frame. The
tool edits the first frame that holds text.
- Typing, Delete and Cut replace the whole story as one undo step
(`text.editRange` takes `clear`, the other frames whose text goes).
- Copy and Cut take the whole story (`text.getRange {id, story: true}`).
- Fills and strokes, `type.step`, `appearance.copyFrom`, the Character,
Paragraph, OpenType and text style panels, the Tabs panel's tab
stops, the font menus and the Justification dialog act on every
frame's text (`text.setRangeStyle {id, story: true}` styles them in
one edit).
- A caret move, a click or a word or paragraph selection ends it.
Select All in unthreaded type is unchanged.
Docs: docs/mcp.md, docs/target-app-parity.md.
Follow-up to #5303. When deduplication shortens a thread ([[a, b], [b, c]] -> [[a, b], [c]]) and no frame changed, the fast path dropped [c] without clearing its threaded continuation. A thread that lost a listing now counts as changed and is flowed again.
Reflow copied each listed frame's text into its thread's story, so a
document that listed one frame several times in a thread, or in several
threads, repeated that text in the story and wrote the grown story back
for the next thread to copy again, growing the text with every
repetition while the document opened. Reflow now keeps each frame at its
first place in the thread list only.
New Symbol and Redefine Symbol replaced a frame of threaded text by a
symbol instance whose art holds a copy of the frame. The thread's
re-flow then added the frame's text to the story, as it does for a
frame that was deleted, so the other frames held that text a second
time while the instance drew it.
A frame that New Symbol or Redefine Symbol puts in the symbol now
leaves its thread with the text it shows, and the other frames keep
the text they hold, as with Create Outlines, Expand and Flatten
Transparency. When the thread's last frame goes into the symbol, the
text it has no room for goes after the text of the last frame that
stays, and the copy in the symbol's art holds only the text the frame
shows. When every frame of a thread goes into the symbol, the copy of
the last frame keeps all its text. Undo restores the thread.
Docs: docs/mcp.md, docs/target-app-parity.md.
Object › Rasterize replaced a frame of threaded text by an image of
it. The thread's re-flow then added the frame's text to the story, as
it does for a frame that was deleted, so the other frames held that
text a second time while the image drew it.
A frame that Rasterize turns into an image now leaves its thread with
the text it shows, and the other frames keep the text they hold, as
with Create Outlines and Expand. When the thread's last frame is
rasterized, the text it has no room for goes after the text of the
last frame that stays. A thread left with one frame is no longer a
thread, and undo restores the thread.
Docs: docs/mcp.md, docs/target-app-parity.md.
Object › Flatten Transparency replaced a frame of threaded text by its
outlines with Convert All Text to Outlines, and by flat regions or an
image where the frame was transparent. The thread's re-flow then added
the frame's text to the story, as it does for a frame that was deleted,
so the other frames held that text a second time while the outlines,
regions or image drew it.
A frame that Flatten Transparency outlines or flattens now leaves its
thread with the text it shows, and the other frames keep the text they
hold, as with Create Outlines and Expand. When the thread's last frame
is flattened, the text it has no room for goes after the text of the
last frame that stays. A thread left with one frame is no longer a
thread, and undo restores the thread.
Docs: docs/mcp.md, docs/target-app-parity.md.
A paragraph split between two threaded frames took its first-line
indent again at the top of the next frame, and a list paragraph drew
its bullet or number there again. Each frame is laid out on its own,
and its first paragraph kept every paragraph attribute there.
A text object now marks a frame whose first paragraph continues from
the frame before (first_para_continues, not saved). The thread re-flow
sets the mark where each frame's share starts inside a paragraph and
measures each share with it, and a restored document reads the marks
from its saved text. Area type and type on a path set the first line of
such a paragraph as a wrapped line: no first-line indent and no bullet
or number. The paragraph after it takes the next number. Release
Selection, Remove Threading, Convert To Point Type and copies of a
frame clear the mark, so the first paragraph there has its indent and
bullet or number again. When Create Outlines, Expand or Expand
Appearance takes frames out of a thread, a frame that stays keeps the
mark only while it is threaded and the frames before it end inside a
paragraph. A frame whose mark changes lays out its first line again,
and when it is still threaded, its thread re-flows. When the outlined
frame is the last one, the text it has no room for is measured as the
frame lays it out: without the first-line indent when it continues a
paragraph, and with its numbers counted on from the frames before it.
The frame before it now takes exactly the text the last frame has no
room for. Duplicates, copies dragged in the Layers panel, the copies
that Release to Layers (Build), Release Opacity Mask and Edit Opacity
Mask make, and Draw Inside's clipping copy then have their cached
bounds computed again, as paste already does for pasted type.
Docs: docs/mcp.md, docs/target-app-parity.md.
Create Outlines on a frame of threaded text removed the frame, and the
thread's re-flow then added the frame's text to the story, as it does
for a frame that was deleted. The other frames held that text a second
time while the outlines drew it. Object › Expand, and Expand Appearance
where it outlines type or groups it with a shadow, outer glow or Crop
Marks, did the same.
An outlined frame now leaves its thread with the text it shows, and the
other frames keep the text they hold. When the thread's last frame is
outlined, the text it has no room for goes after the text of the last
frame that stays. When Expand Appearance keeps a frame as type in a
group, the type takes the frame's place in the thread. A thread left
with one frame is no longer a thread, and undo restores the thread.
Docs: docs/mcp.md, docs/target-app-parity.md.
Converting a frame of threaded text to point type left the frame's
text in the point type, and the re-flow also added that text to the
story, as it does for a frame that was deleted. The other frames then
held it a second time.
A frame that is still in the document as point type now leaves its
thread with the text it holds. The story flows through the other
frames without that text, so each character is held once. A thread
left with one frame is no longer a thread, and undo restores the
thread.
Docs: docs/mcp.md, docs/target-app-parity.md.
When two or more frames stayed in the thread, the first got the whole story while the others kept their shares, so the re-flow joined those twice. The frames after the first now start empty, and the story flows through them once.
Illustrator links type in an area or along a path (https://helpx.adobe.com/illustrator/using/manage-text-area.html); until now only area type threaded here. Type on a path that overflows ends its line where its text stops fitting, so a story flows on from it, and its red out port, just past its end bracket, loads the Selection tool with the text as area type's does. A new frame threaded from it at a point is type on a path of its shape.
Optical Margin Alignment was stored and set per text object, so the
frames of one thread could differ. Turning it on in the first frame of
a thread left the lines in the other frames flush with their margins.
Type › Optical Margin Alignment and type.opticalMarginAlignment now set
every frame of a selected frame's thread, in one undo step, and the
reply's ids list them all. After any edit to a thread, its frames take
the setting of the frame that the edit turned on or off, else the
first frame's. Threading frames gives the thread its first frame's
setting, and frames taken out of a thread keep it. A file whose frames
of one thread differ opens with the first frame's setting in all of
them. This holds for native files and for documents restored from the
editing copy that an EPS, SVG, PDF or .ai file carries.
Threading text from an out port into existing area type
(text.thread.add with to) now flows the story into that frame at once.
Before, the story reached it only at the next edit of one of the
thread's frames.
Docs: docs/mcp.md, docs/target-app-parity.md, docs/type-parity.md.
After every edit of a document with threaded text, each frame of a
drag included, threads::reflow copied the runs and the text object of
every frame of every thread, and then dropped the copies for each
thread whose frames the edit had not changed. With a story of 50,000
characters threaded through 8 frames with a style change at every word
(9,618 runs), moving another object took 7.8 ms in a release build,
and a frame of a drag took 7.2 ms.
reflow now copies a thread's story only when one of its frames
changed. The same move takes 0.013 ms, and the drag frame takes
0.012 ms. Threads with a changed frame re-flow as before, and the
documents and undo steps after edits are the same as before.
Docs: docs/target-app-parity.md.
Document symbols placed inline in a run of type (beyond Illustrator; like
InDesign inline anchored objects): TextRun.inline holds the symbol, scale and
shift; the run is one U+FFFC laid out as a glyph sized to the art, centred on
the cap height. text.insertInline and Type > Insert Inline Symbol; editing
keeps the graphic whole; canvas, SVG (<use>) and PDF draw the art; Create
Outlines turns it into a symbol instance.
Each paragraph has its own alignment, indents, spacing, hyphenation, tab
stops and paragraph style (TextObject.paras; para stays paragraph 0's, so
old files and readers work). Layout, editing (split/merge), threads, the
Paragraph/Tabs/Paragraph Styles panels, ranged text.setStyle/setFormat/
tabs/paraStyle.apply, SVG export/import and the fuzzers follow.
Area Type Options gain a fit: none, autoHeight (Illustrator's Auto Size:
the frame's height follows the text after every edit, resolved in
refresh_bounds inside the edit so it shares the edit's undo step) and
shrinkText {minPercent} (beyond Illustrator: overflowing text scales its
sizes, leading and baseline shifts down at layout time by the largest
factor, in 0.1 pt steps of the first run, that fits). The Auto Size New
Area Type preference now applies. text.areaOptions and document.inspect
report overflow and the shrink factor; the Area Type Options dialog
offers fit and first baseline as dropdowns.
Shipped code no longer unwraps, expects or panics: every one of the 124
unwrap()/expect()/panic!/unreachable! sites outside tests now handles the
failure (Result/Option, ?, let-else, defaults) and reports errors to the user.
- Lints: workspace clippy denies unwrap_used, expect_used, panic, todo,
unimplemented and unreachable; clippy.toml allows them in tests, and
integration tests, examples and testkit opt out explicitly.
- Safety net (vectorcraft_engine::guard): a panic in a top-level command rolls
the document back and returns EngineError::Internal; a panicking tool is
reset; the MCP server answers with an internal error and keeps serving; the
UI frame and each control request are guarded.
- APIs that hid failures now return them: Rendered::to_png/to_jpeg/to_webp
return Result (JPEG/WebP errors used to write empty files),
FontDb::face returns Option, Region::top returns Option.
- Fuzzing: engine/tests/import_fuzz.rs feeds garbage, hostile and mutated SVG
and PDF through import → render → export (30k cases locally, no panics).
- Docs: AGENTS.md/CLAUDE.md rule, docs/development.md "Robustness" section,
README pointer and a PR template checklist.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
BFlat