package main
import (
"regexp"
"fmt"
)
func main() {
var re = regexp.MustCompile(`(?m)^\([^|)]+\|[^)]+\) *\+ ?| \+? *\([^|)]+\|[^)]+\)`)
var str = `y ~ 1 + a + (b | c) + (d^2) + e + (1 | f) + g
y~1+a+(b|c)+(d^2)+e+ (1|f)+g
(b | c) + y ~ 1 + a + (d^2) + e + (1 | f) + g
y ~ 1 + a + (d^2) + e + (1 | f) + g + (b | c)
(h|i) + y ~ 1 + a + (b | c) + (d^2) + e + (1 | f) + g +(j+k| m)`
var substitution = ""
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/