disconnect_gap_from_file
void disconnect_gap_from_file(edit_buffer* buffer);
_writer->disconnect_gap_from_file(this);
disconnect_gap_from_file(buffer);
disconnect_gap_from_file(buffer);
disconnect_gap_from_file(buffer);
disconnect_gap_from_file(buffer, cookie->file);
disconnect_gap_from_file(buffer, cookie->file);
disconnect_gap_from_file(str->buffer);