regexp.go
func NewRegexpPath(pattern string) (*RegexpPath, error) {
	r, err := CompileRegexp(pattern)
	if err != nil {
		return nil, err
	}
	return &RegexpPath{*r}, nil
}
func NewRegexpPath(pattern string) (*RegexpPath, error) {
	r, err := CompileRegexp(pattern)
	if err != nil {
		return nil, err
	}
	return &RegexpPath{*r}, nil
}
func NewRegexpPath ( pattern string ) ( * RegexpPath , error ) { r , err := CompileRegexp ( pattern ) if err != nil { return nil , err } return & RegexpPath { * r } , nil }
// RegexpPath -----------------------------------------------------------------
// NewRegexpPath returns a regexp matcher for the given URL path pattern.
RegexpPath ----------------------------------------------------------------- NewRegexpPath returns a regexp matcher for the given URL path pattern .