}

func fPhi(a, b string) string {
	aslash := strings.HasSuffix(a, "/") // ERROR "Redirect Phi based on Phi$"
	bslash := strings.HasPrefix(b, "/")
	switch {
	case aslash && bslash:
		return a + b[1:]
	case !aslash && !bslash:
		return a + "/" + b
	}
	return a + b
}

func main() {

	}
	// Same as singleJoiningSlash, but uses EscapedPath to determine
	// whether a slash should be added
	apath := a.EscapedPath()
	bpath := b.EscapedPath()

	aslash := strings.HasSuffix(apath, "/")
	bslash := strings.HasPrefix(bpath, "/")

	switch {
	case aslash && bslash:
		return a.Path + b.Path[1:], apath + bpath[1:]
	case !aslash && !bslash:
		return a.Path + "/" + b.Path, apath + "/" + bpath
	}

// See-also: https://github.com/golang/go/issues/44290
func singleJoiningSlash(a, b string) string {
	aslash := strings.HasSuffix(a, "/")
	bslash := strings.HasPrefix(b, "/")
	switch {
	case aslash && bslash:
		return a + b[1:]
	case !aslash && !bslash:
		return a + "/" + b
	}
	return a + b
}

func (h *UpgradeAwareHandler) DialForUpgrade(req *http.Request) (net.Conn, error) {

					cmd = cmd[1:]
				}
				inquote = !inquote
			} else {
				b = append(b, c)
			}
			nslash = 0
			continue
		case '\\':
			nslash++
			continue
		}
		b = appendBSBytes(b, nslash)
		nslash = 0
		b = append(b, c)
	}
	return appendBSBytes(b, nslash), ""
}

// commandLineToArgv splits a command line into individual argument

// slashes are removed.
// If the path is empty, Dir returns ".".
// If the path consists entirely of slashes followed by non-slash bytes, Dir
// returns a single slash. In any other case, the returned path does not end in a
// slash.
func Dir(path string) string {
	dir, _ := Split(path)
	return Clean(dir)

# .a files should use slash-separated paths even on windows
# This is important for reproducing native builds with cross-compiled builds.
go build -o x.a text/template
! grep 'GOROOT\\' x.a
! grep 'text\\template' x.a
! grep 'c:\\' x.a

# executables should use slash-separated paths even on windows
# This is important for reproducing native builds with cross-compiled builds.
go build -o hello.exe hello.go
! grep 'GOROOT\\' hello.exe

		h.WriteString(string(svc.Hostname))
		h.Write(Slash)
		h.WriteString(svc.Attributes.Namespace)
		h.Write(Separator)
	}
	h.Write(Separator)

	for _, vs := range r.VirtualServices {
		for _, cfg := range model.VirtualServiceDependencies(vs) {
			h.WriteString(cfg.Kind.String())
			h.Write(Slash)
			h.WriteString(cfg.Name)
			h.Write(Slash)
			h.WriteString(cfg.Namespace)
			h.Write(Separator)
		}

    }

    def "throws IllegalArgumentException when filter contains forward slash [#testFilter]"() {
        when:
        select(testFilter)

        then:
        def ex = thrown(IllegalArgumentException)
        ex.message == "'$testFilter' is an invalid pattern. Patterns cannot contain forward slash."

        where:
        testFilter << ['/abc', 'a/bc', 'ab/c', 'a/b/c', 'a/bc', 'a.b/c']
    }

// last segment of the path, and it makes for happier users if we escape that as
// little as possible.
func PathToPrefix(s string) string {
	slash := strings.LastIndex(s, "/")
	// check for chars that need escaping
	n := 0
	for r := 0; r < len(s); r++ {
		if c := s[r]; c <= ' ' || (c == '.' && r > slash) || c == '%' || c == '"' || c >= 0x7F {
			n++
		}
	}

	// quick exit
	if n == 0 {
		return s
	}

	// escape

	if l.ImportPath != "" {
		slash := ""
		if strings.HasSuffix(baseURL, "/") {
			slash = "/"
		} else {
			baseURL += "/"
		}
		switch {
		case l.Name == "":
			return baseURL + l.ImportPath + slash
		case l.Recv != "":
			return baseURL + l.ImportPath + slash + "#" + l.Recv + "." + l.Name
		default:
			return baseURL + l.ImportPath + slash + "#" + l.Name
		}
	}
	if l.Recv != "" {