Hi!

I would like to define a number of handlers, that have:

• same URL with a file path as the rightmost parameter,
• different HTTP request methods.

Here's a simplified example:

func main() {
	router := mux.NewRouter()
	router.HandleFunc("/files/{path:.*}", getHandler).Methods("GET")
	router.HandleFunc("/files/{path:.*}", postHandler).Methods("POST")
	log.Fatal(http.ListenAndServe(":8080", router))
}

func getHandler(w http.ResponseWriter, r *http.Request) {
	w.Write([]byte("[GET] " + mux.Vars(r)["path"]))
}

func postHandler(w http.ResponseWriter, r *http.Request) {
	w.Write([]byte("[POST] " + mux.Vars(r)["path"]))
}

It seems that mux tends to ignore methods and select improper handler in some specific cases:

• GET http://localhost:8080/files/file.txt => [GET] file.txt (OK)
• POST http://localhost:8080/files/file.txt => [POST] file.txt (OK)
• GET http://localhost:8080/files/path/to/file.txt => [GET] path/to/file.txt (OK)
• POST http://localhost:8080/files/path/to/file.txt => [POST] path/to/file.txt (OK)
• GET http://localhost:8080/files/path/to//file.txt => [GET] path/to/file.txt (OK)
• POST http://localhost:8080/files/path/to//file.txt => [GET] path/to/file.txt (unexpected)
• GET http://localhost:8080/files/path/to/./file.txt => [GET] path/to/file.txt (OK)
• POST http://localhost:8080/files/path/to/./file.txt => [GET] path/to/file.txt (unexpected)
• GET http://localhost:8080/files/path/to/../file.txt => [GET] path/file.txt (OK)
• POST http://localhost:8080/files/path/to/../file.txt => [GET] path/file.txt (unexpected)

Handler declaration order doesn't change the tests results mentioned.