Source File
	man.go

Belonging Package
	github.com/carapace-sh/carapace/internal/man

package man

import (
	"regexp"
	"strings"

	"github.com/carapace-sh/carapace/third_party/golang.org/x/sys/execabs"
)

// Descriptions returns manpage descriptions for commands matching given prefix.
func Descriptions(s string) (descriptions map[string]string) {
	descriptions = make(map[string]string)
	if strings.HasPrefix(s, ".") || strings.HasPrefix(s, "~") || strings.HasPrefix(s, "/") {
		return
	}

	output, err := execabs.Command("man", "--names-only", "-k", "^"+s).Output()
	if err != nil {
		return
	}

	r := regexp.MustCompile(`^(?P<name>[^ ]+) [^-]+- (?P<description>.*)$`)
	lines := strings.Split(string(output), "\n")
	for _, line := range lines {
		if matches := r.FindStringSubmatch(line); len(matches) > 2 {
			descriptions[matches[1]] = matches[2]
		}
	}
	return
}

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Golds is a Go 101 project developed by Tapir Liu.
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