Bug Hunting

I've put in a solution that may work, but it might have unintended side effects too.

I figure the best way to find out is to ship it and see: http://play.golang.org/p/JNHj3PtZaO

package main

import "fmt"
import "regexp"
import "strings"

var (
	regMentions = regexp.MustCompile(`(?:^|\W)([+@](\S+))`)
	regSpecial  = regexp.MustCompile("([\\\\_*{}[\\]()#-.!])")
	replSpecial = `\$1`
)

func main() {
	str := `@_d\a*n)]_ foo +_dan_ +_dan_`

	fmt.Println(str)

	for _, s := range regMentions.FindAllString(str, -1) {
		str = strings.Replace(str, s, regSpecial.ReplaceAllString(s, replSpecial), 1)
	}

	fmt.Println(str)
}

@dan should now work