When a dynamic symbol is redefined or edited, each instance kept every
appearance change whose path still named an object, even when that
object is now one that draws no fill or stroke of its own (an image, a
blend, a mesh) or a symbol instance given a gradient or pattern fill.
symbol.instance.setAppearance refuses such a paint, but the change stayed
on the instance and still counted as a color the document uses.
Fitting the changes to the new art now also clears a fill or stroke the
object at that path does not draw, and drops a change left empty.
Ruler guides were a list kept beside the layers. Each guide is now an
object of its layer or sublayer, always directly in it and above the
layer's art. These behave as on main:
- Guides draw on screen only. Exports (SVG, PDF, PNG, PSD), Fit All,
Select All, the art bounds, clicks and marquees, and a layer's
Pathfinder and Transform effects leave them out. The Layers panel
lists them as guide rows of their layer, the highest guide.list
index first.
- Deleting a layer deletes its guides, and merging layers keeps their
guides in the merged layer.
- The guide commands number guides as guide.list does, in the order
they were made.
New: each guide takes an id from the document's object ids. An object
command given a guide's id fails with an error, and node.move cannot
put a guide into a group or out of its layers. A guide made while an
opacity mask, a symbol or a pattern is edited moves to the top
visible, unlocked layer when editing ends.
File format: native files still save the guides in the document's
guides list, in every file version, so older builds read them. Each
entry may now also carry the guide's id, name, locked and hidden
flags; older builds ignore those fields. Opening a file puts each
saved guide on its layer (on the top visible, unlocked layer when the
file names none or a layer it does not have), and each saved guide
counts against the object limit for opening a file. A ruler guide node
that a file holds below a layer's art moves up to the layer's guides,
and one anywhere else (in a group or another object, beside the
layers, or in a symbol) is removed. Ruler guides read from an .ai file
become guide objects on the layer they were on, numbered in the order
the file lists them.
Each command a script runs keeps a savepoint of the state it may need
to put back if it fails. The savepoint cloned every open document's
whole undo history, so a script that made N edits did O(N^2) work.
- The savepoint now clones each document's state without its history
and keeps a mark: the newest undo and redo steps and the serials of
the steps under them. Until the command ends, the history trims no
step, and a new step sets the redo steps aside instead of dropping
them. A failed command truncates both stacks back to the mark.
- file.close, file.closeAll, document.close and file.revert still keep
a whole copy, since they remove the history or the document.
- When a failed command removed or changed a step under the newest
one, the history cannot be put back exactly, and the run stops with
an error; its rollback restores the documents as they were before
the run.
- run_guarded no longer copies the histories during a script's run,
and a committed run moves the histories from before it back instead
of copying them.
- Symbol editing mode shares its saved redo steps between copies of a
document's state.
- A script cannot run edit.clearHistory. A run keeps each document's
undo steps from before it, so the command reported a clear that the
commit then undid.
Commands that read `id` and otherwise act on the selection, the highlighted
layer row or a new object read it with a lenient helper, so `{"id": "abc"}`,
`true` or `{}` acted on the selection instead. They now read it with
`object_param`, which refuses any value that is not a non-negative integer
with "`id` must be a whole number" under the command's name and changes
nothing; an omitted or null `id` keeps the default.
Commands: object.isolate, layer.locate, layer.releaseToLayers,
graphicStyle.new and redefine, charStyle and paraStyle new, apply and
redefine, image.info, links.info, links.goTo, links.unembed, shaper.release,
shaper.expand (whose errors now carry their own name),
transparency.editOpacityMask, transparency.viewOpacityMask, symbol.edit, the
object.blend.spine commands, path.curvature and the type commands that read
type ranges.
The appearance changes of the instances on the layers now follow the edited objects through the same pass as the instances in other symbols, graph designs, pattern tiles and brushes. That pass also reaches instances used as opacity-mask art, which keep their changes on the same objects when an edit reorders them and drop the change to an object the edit deletes.
Editing a dynamic symbol moved each placed instance's appearance changes with the objects they
name, but an instance stored in the art of another symbol kept its changes at the old paths, so
placing that symbol showed a change on the wrong object. Those instances, opacity masks included,
now follow the edit too and keep only the changes to objects the art still has.
symbol.edit checks the new placement before it ends the symbol being edited, so a call with an out-of-range x or y fails and leaves the current edit open. While a symbol is edited, object.isolate refuses art outside the editing layer, and object.exitIsolation goes back to the editing layer only from a group inside it; from any other isolation it leaves symbol editing mode.
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