The ::insert-child-anchor signal is emitted to insert a
gtk.TextChildAnchor in a gtk.TextBuffer
Insertion actually occurs in the default handler.
Note that if your handler runs before the default handler it must
not invalidate the location iter (or has to revalidate it).
The default signal handler revalidates it to be placed after the
inserted anchor.
The ::insert-child-anchor signal is emitted to insert a gtk.TextChildAnchor in a gtk.TextBuffer Insertion actually occurs in the default handler.
Note that if your handler runs before the default handler it must not invalidate the location iter (or has to revalidate it). The default signal handler revalidates it to be placed after the inserted anchor.
See also: TextBuffer.insertChildAnchor.