package main
import (
"regexp"
"fmt"
)
func main() {
var re = regexp.MustCompile(`(?m)\h*(?<!\=|\!|^)([!=<>+-]+)(?!\=|\!|$)\h*`)
var str = `а= 3
а =3
а=3
а= 3
а =3
а=3
а= 3
а =3
а=3
a+b
a+ b
a +b
a + b
c>d
c >d
c> d
a<b
a <b
a < b
a< b
a==b
a<>b
a !=b
========================`
var substitution = " \1 "
fmt.Println(re.ReplaceAllString(str, substitution))
}
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for Golang, please visit: https://golang.org/pkg/regexp/