defer span.Done()

	m.Pkgs = []string{}

	isMatch := func(string) bool { return true }
	treeCanMatch := func(string) bool { return true }
	if !m.IsMeta() {
		isMatch = pkgpattern.MatchPattern(m.Pattern())
		treeCanMatch = pkgpattern.TreeCanMatchPattern(m.Pattern())
	}

	var mu sync.Mutex
	have := map[string]bool{
		"builtin": true, // ignore pseudo-package that exists only for documentation
	}

// Copyright 2022 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package main

import (
	"cmd/internal/cov"
	"cmd/internal/pkgpattern"
	"cmd/internal/telemetry"
	"flag"
	"fmt"
	"os"
	"runtime"
	"runtime/pprof"
	"strings"
)

var verbflag = flag.Int("v", 0, "Verbose trace output level")

	"runtime"
	"strings"

	"cmd/go/internal/base"
	"cmd/go/internal/cfg"
	"cmd/go/internal/gover"
	"cmd/go/internal/modfetch/codehost"
	"cmd/go/internal/modinfo"
	"cmd/go/internal/search"
	"cmd/internal/pkgpattern"

	"golang.org/x/mod/module"
)

type ListMode int

const (
	ListU ListMode = 1 << iota
	ListRetracted
	ListDeprecated
	ListVersions
	ListRetractedVersions
)