GtkTextIter end;
                gtk_text_buffer_get_end_iter(self->output_buffer, &end);
                gtk_text_buffer_insert_with_tags(self->output_buffer, &end,
                                                 text, -1,
                                                 self->tags[tag_index], NULL);
                if(append_break) {
                        gtk_text_buffer_insert_with_tags(self->output_buffer, &end,
                                                         "\n", 1,
                                                         self->tags[tag_index], NULL);
                }
                gtk_text_view_scroll_to_mark(GTK_TEXT_VIEW(self->output), self->output_end, 0.49, TRUE, 0.0, 0.
0);