gofumpt -w foo.go
cmp foo.go foo.go.golden

gofumpt -d foo.go.golden
! stdout .

-- foo.go --
package p

func f1() {

	println("multiple")

	println("statements")

}

func f2() {

	// comment directly before
	println()

	// comment after

}

func _() {
	f3 := func() {

		println()

	}
}

func multilineParams(p1 string,
	p2 string) {

	println("body")

}

func multilineParamsUnambiguous(p1 string,
	p2 string,
) {

	println("body")

}

func multilineParamsListNoReturn(
	p1 string,
	p2 string,
) {

	println("body")

}

func multilineParamsListReturningNamedSingleValue(
	p1 string,
	p2 string,
) (err error) {

	println("body")
	return err

}

func multilineParamsListReturningSingleValue(
	p1 string,
	p2 string,
) error {

	println("body")
	return nil

}

func multilineParamsListReturningNamedMultiValues(
	p1 string,
	p2 string,
) (s string, err error) {

	println("body")
	return s, err

}

func multilineParamsListReturningMultiValues(
	p1 string,
	p2 string,
) (string, error) {

	println("body")
	return "", nil

}

func multilineParamsListReturningNamedMultiLineValuesList(
	p1 string,
	p2 string,
) (
	s string,
	err error,
) {

	println("body")
	return s, err

}

func multilineParamsListReturningMultiLineValues(
	p1 string,
	p2 string,
) (
	string,
	error,
) {

	println("body")
	return "", nil

}

func multilineParamsOneParamNoReturn(
	p1 string,
) {

	println("body")

}

func multilineParamsOneParamReturningNamedSingleValue(
	p1 string,
) (err error) {

	println("body")
	return err

}

func multilineParamsOneParamReturningSingleValue(
	p1 string,
) error {

	println("body")
	return nil

}

func multilineParamsOneParamReturningNamedMultiValues(
	p1 string,
) (s string, err error) {

	println("body")
	return s, err

}

func multilineParamsOneParamReturningMultiValues(
	p1 string,
) (string, error) {

	println("body")
	return "", nil

}

func multilineParamsOneParamReturningNamedMultiLineValuesList(
	p1 string,
) (
	s string,
	err error,
) {

	println("body")
	return s, err

}

func multilineParamsOneParamReturningMultiLineValues(
	p1 string,
) (
	string,
	error,
) {

	println("body")
	return "", nil

}

func multilineResults() (p1 string,
	p2 string) {

	println("body")

}

func multilineResultsUnambiguous() (p1 string,
	p2 string,
) {

	println("body")

}

func multilineNoFields(
) {

	println("body")

}

func f(
	foo int,
	bar string,
/* baz */) {

    body()
}

func f2(
	foo int,
	bar string,
) (
	string,
	error,
	/* baz */) {

	return "", nil
}

func multilineResultsMultipleEmptyLines() (p1 string,
	p2 string) {


	println("body")

}

func multilineParamsWithoutEmptyLine(p1 string,
	p2 string) {
	println("body")
}

func multilineParamsWithoutEmptyLineWithComment(p1 string,
	p2 string) {
	// comment
	println("body")
}

// Same as the others above, but with a single result parameter without
// parentheses. This used to cause token.File.Offset crashes.
func f(p1 string,
	p2 string) int {

	println("body")
	return 0
}

func a() {
	f := func(s string,
		b bool,
	) {
		// foo
	}
}

func f(p1 string,
	p2 string) (int, string,
	/* baz */) {

	println("body")
	return 0, ""
}
-- foo.go.golden --
package p

func f1() {
	println("multiple")

	println("statements")
}

func f2() {
	// comment directly before
	println()

	// comment after
}

func _() {
	f3 := func() {
		println()
	}
}

func multilineParams(p1 string,
	p2 string,
) {
	println("body")
}

func multilineParamsUnambiguous(p1 string,
	p2 string,
) {
	println("body")
}

func multilineParamsListNoReturn(
	p1 string,
	p2 string,
) {
	println("body")
}

func multilineParamsListReturningNamedSingleValue(
	p1 string,
	p2 string,
) (err error) {
	println("body")
	return err
}

func multilineParamsListReturningSingleValue(
	p1 string,
	p2 string,
) error {
	println("body")
	return nil
}

func multilineParamsListReturningNamedMultiValues(
	p1 string,
	p2 string,
) (s string, err error) {
	println("body")
	return s, err
}

func multilineParamsListReturningMultiValues(
	p1 string,
	p2 string,
) (string, error) {
	println("body")
	return "", nil
}

func multilineParamsListReturningNamedMultiLineValuesList(
	p1 string,
	p2 string,
) (
	s string,
	err error,
) {
	println("body")
	return s, err
}

func multilineParamsListReturningMultiLineValues(
	p1 string,
	p2 string,
) (
	string,
	error,
) {
	println("body")
	return "", nil
}

func multilineParamsOneParamNoReturn(
	p1 string,
) {
	println("body")
}

func multilineParamsOneParamReturningNamedSingleValue(
	p1 string,
) (err error) {
	println("body")
	return err
}

func multilineParamsOneParamReturningSingleValue(
	p1 string,
) error {
	println("body")
	return nil
}

func multilineParamsOneParamReturningNamedMultiValues(
	p1 string,
) (s string, err error) {
	println("body")
	return s, err
}

func multilineParamsOneParamReturningMultiValues(
	p1 string,
) (string, error) {
	println("body")
	return "", nil
}

func multilineParamsOneParamReturningNamedMultiLineValuesList(
	p1 string,
) (
	s string,
	err error,
) {
	println("body")
	return s, err
}

func multilineParamsOneParamReturningMultiLineValues(
	p1 string,
) (
	string,
	error,
) {
	println("body")
	return "", nil
}

func multilineResults() (p1 string,
	p2 string,
) {
	println("body")
}

func multilineResultsUnambiguous() (p1 string,
	p2 string,
) {
	println("body")
}

func multilineNoFields() {
	println("body")
}

func f(
	foo int,
	bar string,
	/* baz */
) {
	body()
}

func f2(
	foo int,
	bar string,
) (
	string,
	error,
	/* baz */
) {
	return "", nil
}

func multilineResultsMultipleEmptyLines() (p1 string,
	p2 string,
) {
	println("body")
}

func multilineParamsWithoutEmptyLine(p1 string,
	p2 string,
) {
	println("body")
}

func multilineParamsWithoutEmptyLineWithComment(p1 string,
	p2 string,
) {
	// comment
	println("body")
}

// Same as the others above, but with a single result parameter without
// parentheses. This used to cause token.File.Offset crashes.
func f(p1 string,
	p2 string,
) int {
	println("body")
	return 0
}

func a() {
	f := func(s string,
		b bool,
	) {
		// foo
	}
}

func f(p1 string,
	p2 string) (int, string,

/* baz */) {
	println("body")
	return 0, ""
}