graphicStyle.apply and graphicStyle.redefine copied the style's whole
appearance into a new allocation for every target. Targets that take
the style's appearance as stored now share one copy-on-write handle; a
target whose placed gradients are fitted to its own bounds still gets
its own. Editing one object later gives it its own copy. Saved files
and undo values are unchanged.
The undo history's memory estimate counted a shared appearance once
per object; it now counts each appearance allocation once per side.
Select > Same > Fill Color, Stroke Color, Fill & Stroke, Stroke Weight,
Opacity, Blending Mode, Appearance, Shape, Graphic Style and Appearance
Attribute compared the other objects with the first selected object,
even when select.set had put a hidden or locked object, one on a
template layer or one outside the isolated group first. They now take
the first selected object that the Select commands could select, in
selection order, and keep the compound path and isolation rules for it.
A selection that holds no such object returns "nothing selected".
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