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document style collapsing of find-or-create-style

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svn: r13151

original commit: 7f4c069ab62057b4a5b4dd57da81de1766ce12c6
This commit is contained in:
Matthew Flatt 2009-01-15 13:49:41 +00:00
parent d59e6ee771
commit 21d92e0400
1 changed files with 8 additions and 4 deletions
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12
collects/scribblings/gui/style-list-class.scrbl
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@ -73,11 +73,15 @@ The @scheme[base-style] argument must be a style within this style
Creates a new derived style, or finds an appropriate existing one.
The returned style is always unnamed. See @|stylediscuss| for more
information.
information.
The @scheme[base-style] argument must be a style within this style list.
}
The @scheme[base-style] argument must be a style within this style
list. If @scheme[base-style] is not a join style, if it has no name,
and if its delta can be collapsed with @scheme[delta] (see
@xmethod[style-delta% collapse]), then the collapsed delta is used in
place of @scheme[delta], and the base style of @scheme[base-style] is
used in place of @scheme[base-style]; this collapsing and substitution
of base styles is performed recursively.}
@defmethod[(forget-notification [key any/c])