currentLen = runeLen
		}
	}
	io.WriteString(w, s[last:])
	w.Close()
}

// qEncode encodes s using Q encoding and writes it to buf. It splits the
// encoded-words when necessary.
func (e WordEncoder) qEncode(buf *strings.Builder, charset, s string) {
	// We only split encoded-words when the charset is UTF-8.
	if !isUTF8(charset) {
		writeQString(buf, s)
		return
	}

	var currentLen, runeLen int

//sys	sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) = SYS_SENDFILE64
//sys	Setfsgid(gid int) (err error)
//sys	Setfsuid(uid int) (err error)
//sys	Shutdown(fd int, how int) (err error)
//sys	Splice(rfd int, roff *int64, wfd int, woff *int64, len int, flags int) (n int, err error)

//sys	SyncFileRange(fd int, off int64, n int64, flags int) (err error)
//sys	Truncate(path string, length int64) (err error) = SYS_TRUNCATE64

//sys	sendfile(outfd int, infd int, offset *int64, count int) (written int, err error)
//sys	setfsgid(gid int) (prev int, err error)
//sys	setfsuid(uid int) (prev int, err error)
//sys	Shutdown(fd int, how int) (err error)
//sys	Splice(rfd int, roff *int64, wfd int, woff *int64, len int, flags int) (n int64, err error)

func Stat(path string, stat *Stat_t) (err error) {
	return Fstatat(AT_FDCWD, path, stat, 0)
}

		// https://spec.commonmark.org/0.30/#info-string
		// “The first word of the info string is typically used to
		// specify the language of the code sample...”
		// No definition of what “first word” means though.
		// The Dingus splits on isUnicodeSpace, but Goldmark only uses space.
		lang := b.Info
		for i, c := range lang {
			if isUnicodeSpace(c) {
				lang = lang[:i]
				break
			}
		}

//sys	Setfsgid(gid int) (err error)
//sys	Setfsuid(uid int) (err error)
//sysnb	setrlimit(resource int, rlim *Rlimit) (err error) = SYS_SETRLIMIT
//sys	Splice(rfd int, roff *int64, wfd int, woff *int64, len int, flags int) (n int64, err error)
//sys	Stat(path string, stat *Stat_t) (err error)
//sys	Statfs(path string, buf *Statfs_t) (err error)

//sys	setfsgid(gid int) (prev int, err error) = SYS_SETFSGID32
//sys	setfsuid(uid int) (prev int, err error) = SYS_SETFSUID32
//sys	Shutdown(fd int, how int) (err error)
//sys	Splice(rfd int, roff *int64, wfd int, woff *int64, len int, flags int) (n int, err error)
//sys	Stat(path string, stat *Stat_t) (err error) = SYS_STAT64
//sys	Ustat(dev int, ubuf *Ustat_t) (err error)

	}
}

// parseGoroutineName returns the goroutine name from the event's name field.
// E.g. if e.Name is "G42 main.cpu10", this returns "main.cpu10".
func parseGoroutineName(e *format.Event) string {
	parts := strings.SplitN(e.Name, " ", 2)
	if len(parts) != 2 || !strings.HasPrefix(parts[0], "G") {
		return ""
	}
	return parts[1]
}

// filterBlocked returns an event filter that returns true if the event's

//sys	sendfile(outfd int, infd int, offset *int64, count int) (written int, err error)
//sys	setfsgid(gid int) (prev int, err error)
//sys	setfsuid(uid int) (prev int, err error)
//sys	Shutdown(fd int, how int) (err error)
//sys	Splice(rfd int, roff *int64, wfd int, woff *int64, len int, flags int) (n int64, err error)

func Stat(path string, stat *Stat_t) (err error) {
	// Use fstatat, because Android's seccomp policy blocks stat.

	case *md.HTMLBlock:
	case *md.Empty:
	case *md.ThematicBreak:
	default:
		panic(fmt.Sprintf("unknown block type %T", b))
	}
}

// addSymbolLinksInlines looks for symbol links in the slice of inline markdown
// elements. It returns a new slice of inline elements with links added.
func addSymbolLinksInlines(ins []md.Inline, defaultPackage string) []md.Inline {
	ins = splitAtBrackets(ins)
	var res []md.Inline
	for i := 0; i < len(ins); i++ {

		if c.pattern.lastSegment().s != "" {
			matches = append(matches, pathUnescape(path[1:])) // remove initial slash
		}
		return c, matches
	}
	return nil, nil
}

// firstSegment splits path into its first segment, and the rest.
// The path must begin with "/".
// If path consists of only a slash, firstSegment returns ("/", "").
// The segment is returned unescaped, if possible.