Gets the bounds for the completion, which is the beginning of the current word (taking break characters into account) to the current insertion cursor.
If @begin is non-%NULL, it will be set to the start position of the current word being completed.
If @end is non-%NULL, it will be set to the insertion cursor for the current word being completed.
a #GtkTextIter
%TRUE if the marks are still valid and @begin or @end was set.
See Implementation
Gets the bounds for the completion, which is the beginning of the current word (taking break characters into account) to the current insertion cursor.
If @begin is non-%NULL, it will be set to the start position of the current word being completed.
If @end is non-%NULL, it will be set to the insertion cursor for the current word being completed.