This function opens up a hole in list, fills it in with attributes from
the left, and then merges other on top of the hole.
This operation is equivalent to stretching every attribute
that applies at position pos in list by an amount len,
and then calling pango_attr_list_change() with a copy
of each attribute in other in sequence (offset in position by pos).
This operation proves useful for, for instance, inserting
a pre-edit string in the middle of an edit buffer.
the length of the spliced segment. (Note that this
must be specified since the attributes in other
may only be present at some subsection of this range)
This function opens up a hole in list, fills it in with attributes from the left, and then merges other on top of the hole. This operation is equivalent to stretching every attribute that applies at position pos in list by an amount len, and then calling pango_attr_list_change() with a copy of each attribute in other in sequence (offset in position by pos). This operation proves useful for, for instance, inserting a pre-edit string in the middle of an edit buffer.