if def := typedef[name]; def != nil {
				id.Name = gofmt(def)
			}
		}
	}

	conf.Fprint(&buf, fset, f.AST)

	return buf.String()
}

var gofmtBuf strings.Builder

// gofmt returns the gofmt-formatted string for an AST node.
func gofmt(n interface{}) string {
	gofmtBuf.Reset()
	err := printer.Fprint(&gofmtBuf, fset, n)
	if err != nil {

				indent = 0
			}
			// Remove the wrapping.
			// Gofmt has turned the "; " into a "\n\n".
			// There will be two non-blank lines with indent, hence 2*indent.
			src = src[2*indent+len("package p\n\nfunc _() {"):]
			// Remove only the "}\n" suffix: remaining whitespaces will be trimmed anyway
			src = src[:len(src)-len("}\n")]
			return bytes.TrimSpace(src)
		}
		// Gofmt has also indented the function body one level.

			if isTopName(n.Fun, "make") && len(n.Args) >= 1 {
				typeof[n] = gofmt(n.Args[0])
				return
			}
			// new(T) has type *T
			if isTopName(n.Fun, "new") && len(n.Args) == 1 {
				typeof[n] = "*" + gofmt(n.Args[0])
				return
			}
			// Otherwise, use type of function to determine arguments.
			t := typeof[n.Fun]
			if t == "" {
				t = cfg.External[gofmt(n.Fun)]
			}
			in, out := splitFunc(t)

	//gofmt -stdin

	if x {
		y

															//gofmt -stdin

															if err != nil {
																source := strings.NewReader(`line 1.
line 2.
`)
																return source
															}

															f := func(hat, tail string) {

																fmt.Println(hat+`
		foo


	`+tail,
																	"more",
																	"and more")

// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

// This file contains test cases for typeset-only constraint elements.
// TODO(gri) gofmt once/if gofmt supports this notation.

package p

type (
        _[_ t] t
        _[_ ~t] t
        _[_ t|t] t
        _[_ ~t|t] t
        _[_ t|~t] t
        _[_ ~t|~t] t

        _[_ t, _, _ t|t] t

	//gofmt -stdin

	// comment

	//gofmt -stdin

	// comment
	

-- input --
Hello, world.
This is a paragraph.

-- gofmt --
Hello, world.
This is a paragraph.

-- text --
Hello, world. This is a paragraph.

-- markdown --
Hello, world. This is a paragraph.

-- html --
<p>Hello, world.

		//gofmt -stdin

		/* note: no newline at end of file */
		for i := 0; i < 10; i++ {
			s += i
		}