// The point of the deadlock lock is to deadlock.
	"deadlock": true,
}

func main() {
	flagO := flag.String("o", "", "write to `file` instead of stdout")
	flagDot := flag.Bool("dot", false, "emit graphviz output instead of Go")
	flag.Parse()
	if flag.NArg() != 0 {
		fmt.Fprintf(os.Stderr, "too many arguments")
		os.Exit(2)
	}

	g, err := dag.Parse(ranks)
	if err != nil {
		log.Fatal(err)
	}

	// Convert to svg.
	svg, err := dotToSvg(dot.Bytes())
	if err != nil {
		http.Error(w, "Could not execute dot; may need to install graphviz.",
			http.StatusNotImplemented)
		ui.options.UI.PrintErr("Failed to execute dot. Is Graphviz installed?\n", err)
		return
	}

	// Get all node names into an array.
	nodes := []string{""} // dot starts with node numbered 1
	for _, n := range g.Nodes {

	}

	b := bytes.NewBuffer(nil)
	if err := marshalDOT(b, nodes, edges); err != nil {
		http.Error(w, err.Error(), http.StatusInternalServerError)
		return
	}

	w.Header().Set("Content-Type", "text/vnd.graphviz")
	w.Header().Set("X-Content-Type-Options", "nosniff")
	w.Write(b.Bytes())
	w.WriteHeader(http.StatusOK)
}

func (gc *GarbageCollector) DebuggingHandler() http.Handler {
	return NewDebugHandler(gc)

                                 absl::string_view error_message,
                                 toco::GraphVizDumpOptions* dump_options) {
  // Make sure the graphviz file will be dumped under the same folder.
  dump_options->dump_graphviz = toco_flags->conversion_summary_dir();
  // Here we construct the `toco::Model` class based on the input graph def,

	for i := range in {
		out[i] = escapeForDot(in[i])
	}
	return out
}

// escapeForDot escapes double quotes and backslashes, and replaces Graphviz's
// "center" character (\n) with a left-justified character.
// See https://graphviz.org/docs/attr-types/escString/ for more info.
func escapeForDot(str string) string {

		cmd := exec.Command("dot", "-T"+format)
		cmd.Stdin, cmd.Stdout, cmd.Stderr = input, output, os.Stderr
		if err := cmd.Run(); err != nil {
			return fmt.Errorf("failed to execute dot. Is Graphviz installed? Error: %v", err)
		}
		return nil
	}
}

// massageDotSVG invokes the dot tool to generate an SVG image and alters
// the image to have panning capabilities when viewed in a browser.

				"text/vnd.curl.scurl",
				"text/vnd.curl.mcurl",
				"text/vnd.dmclientscript",
				"text/vnd.esmertec.theme-descriptor",
				"text/vnd.fly",
				"text/vnd.fmi.flexstor",
				"text/vnd.graphviz",
				"text/vnd.in3d.3dml",
				"text/vnd.in3d.spot",
				"text/vnd.iptc.anpa",
				"text/vnd.iptc.newsml",
				"text/vnd.iptc.nitf",
				"text/vnd.latex-z",
				"text/vnd.motorola.reflex",

	}
	for _, bs := range po.noneq {
		for _, x := range bs {
			if x != 0 {
				return fmt.Errorf("non-empty noneq map")
			}
		}
	}
	return nil
}

// DotDump dumps the poset in graphviz format to file fn, with the specified title.
func (po *poset) DotDump(fn string, title string) error {
	f, err := os.Create(fn)
	if err != nil {
		return err
	}
	defer f.Close()

)

// GraphicRanges defines the set of graphic characters according to Unicode.
var GraphicRanges = []*RangeTable{
	L, M, N, P, S, Zs,
}

// PrintRanges defines the set of printable characters according to Go.
// ASCII space, U+0020, is handled separately.
var PrintRanges = []*RangeTable{
	L, M, N, P, S,
}

// IsGraphic reports whether the rune is defined as a Graphic by Unicode.

	// 	is graphic rune
	// 	is number rune
	// 	is printable rune
	// For '!':
	// 	is graphic rune
	// 	is printable rune
	// 	is punct rune
	// For ' ':
	// 	is graphic rune
	// 	is printable rune
	// 	is space rune
	// For '℃':
	// 	is graphic rune
	// 	is printable rune
	// 	is symbol rune
	// For 'ᾭ':
	// 	is graphic rune
	// 	is letter rune
	// 	is printable rune
	// 	is title case rune