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docs: Clarify that <lookup> tags can be nested.

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Logan Rathbone 2023-11-24 15:52:32 -05:00
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commit 5c2e2977e0
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gtk/gtkexpression.c
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@ -136,6 +136,11 @@
* <lookup name='search'>string_filter</lookup>
* ```
*
* Since the `<lookup>` element creates an expression and its element content can
* itself be an expression, this means that `<lookup>` tags can also be nested.
* This is a common idiom when dealing with `GtkListItem`s. See
* [class@Gtk.BuilderListItemFactory] for an example of this technique.
*
* To create a constant expression, use the `<constant>` element. If the type attribute
* is specified, the element content is interpreted as a value of that type. Otherwise,
* it is assumed to be an object. For instance: