text_view = get_widget_assert (xml, "syntax_text_view");
se->buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (text_view));
se->lexer = lex_create (the_source_stream);
text_view = get_widget_assert (xml, "syntax_text_view");
se->buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (text_view));
se->lexer = lex_create (the_source_stream);