n = paren
		}

		return n
	}
	ir.EditChildren(fn, mark)

	// Edit until stable.
	for {
		done := true

		for i := 0; i < len(parens); i++ { // can't use "range parens" here
			paren := parens[i]
			if new := edit(paren.X); new != nil {
				// Update AST and recursively mark nodes.
				paren.X = new
				ir.EditChildren(new, mark) // mark may append to parens
				done = false
			}

	// Posix repetitions
	{`a{1}`, `a`},
	{`a{2}`, `aa`},
	{`a{5}`, `aaaaa`},
	{`a{0,1}`, `a?`},
	// The next three are illegible because Simplify inserts (?:)
	// parens instead of () parens to avoid creating extra
	// captured subexpressions. The comments show a version with fewer parens.
	{`(a){0,2}`, `(?:(a)(a)?)?`},                       //       (aa?)?
	{`(a){0,4}`, `(?:(a)(?:(a)(?:(a)(a)?)?)?)?`},       //   (a(a(aa?)?)?)?

		"define without value",
		"#define A",
		"",
	},
	{
		"macro without arguments",
		"#define A() 1234\n" + "A()\n",
		"1234.\n",
	},
	{
		"macro with just parens as body",
		"#define A () \n" + "A\n",
		"(.).\n",
	},
	{
		"macro with parens but no arguments",
		"#define A (x) \n" + "A\n",
		"(.x.).\n",
	},
	{
		"macro with arguments",
		"#define A(x, y, z) x+z+y\n" + "A(1, 2, 3)\n",
		"1.+.3.+.2.\n",

		//   SYMBOL(ARGS)
		//   \tFILE:LINE +0xRELPC sp=0x%x fp=0x%x pc=0x%x
		// Note: SYMBOL may contain parens "pkg.(*T).method"
		// The RELPC is sometimes missing.

		// Skip the symbol(args) line.
		i++
		if i == len(lines) {
			break
		}
		line = lines[i]

		// Parse the PC, and correct for the parent and child's
		// different mappings of the text section.
		pc, err := getPC(line)
		if err != nil {

// Child runs the part of the crashmonitor that runs in the child process.
// It expects its stdin to be connected via a pipe to the parent which has
// run Parent.
func Child() {
	// Wait for parent process's dying gasp.
	// If the parent dies for any reason this read will return.
	data, err := io.ReadAll(os.Stdin)
	if err != nil {
		log.Fatalf("failed to read from input pipe: %v", err)
	}

	// EcmaScript builtin encodeURIComponent.
	// It should not cause any misencoding of URLs in pages with
	// Content-type: text/html;charset=UTF-8.
	for i, n := 0, len(s); i < n; i++ {
		c := s[i]
		switch c {
		// Single quote and parens are sub-delims in RFC 3986, but we
		// escape them so the output can be embedded in single
		// quoted attributes and unquoted CSS url(...) constructs.

// Code generated by running "go generate" in golang.org/x/text. DO NOT EDIT.

package compact

// parents maps a compact index of a tag to the compact index of the parent of
// this tag.
var parents = []ID{ // 775 elements
	// Entry 0 - 3F
	0x0000, 0x0000, 0x0001, 0x0001, 0x0000, 0x0004, 0x0000, 0x0006,
	0x0000, 0x0008, 0x0000, 0x000a, 0x000a, 0x000a, 0x000a, 0x000a,
	0x000a, 0x000a, 0x000a, 0x000a, 0x000a, 0x000a, 0x000a, 0x000a,

    <modelVersion>4.0.0</modelVersion>

    <groupId>org.apache.maven.its</groupId>
    <artifactId>parent</artifactId>
    <version>0.1</version>
    <packaging>pom</packaging>

    <name>Maven Integration Test :: Dummy Parent</name>

    <build>
        <pluginManagement>
            <plugins>
                <plugin>

    <modelVersion>4.0.0</modelVersion>

    <groupId>org.apache.maven.its</groupId>
    <artifactId>parent</artifactId>
    <version>0.1</version>
    <packaging>pom</packaging>

    <name>Maven Integration Test :: Dummy Parent</name>

    <build>
        <pluginManagement>
            <plugins>
                <plugin>

    <modelVersion>4.0.0</modelVersion>
    <groupId>util.util.parent</groupId>
    <artifactId>util-parent</artifactId>
    <version>3</version>
    <packaging>pom</packaging>
    <name>Test Parent Pom</name>
    <description>Defaults for Test Maven Build with remote parent projects.</description>
    <dependencies>
        <dependency>
            <groupId>commons-lang</groupId>