如何替换任何语言的所有非字母数字？

Question

Using regex in golang, I'd like to replace all non-alphanumeric characters of any languages with -, in order to make pretty urls:

Here is one of many regex that I've tried:

package main

import (
    "fmt"
    "regexp"
)

const sample = `سلام دنیا hello world 1 %^&`

func main() {
    var re = regexp.MustCompile(`~[\p{L}0-9\s]+`)
    s := re.ReplaceAllString(sample, `-`)
    fmt.Println(s)
} 

The output should be: سلام-دنیا-hello-world-1

But it does not work. How can I fix it?

Answer 1

Why do you use ~ at the beginning? If you want to se negated set, use ^ inside of the brackets: [^...]. Also if you want to replace whitespaces, don't include \s in the negated set definition:

[^\p{L}0-9]+

Demo