The delete_from_cursor signal is a keybinding signal which gets emitted when the user initiates a text deletion.
type is gtk_delete_chars, GTK+ deletes the selection if there is one, otherwise it
deletes the requested number of characters.
The default bindings for this signal are Delete for deleting a character and Ctrl-Delete for deleting a word.
the granularity of the deletion, as a DeleteType
the number of