使用正则表达式替换Go中的文本

Question

I am working in Go, I have a text file in which I want to replace a text based on a regex, but it's not working as expected even when I already tested the regex here and it says that there's a match.

I made the basic example in play ground and I am getting the same result. I have 3 text files with the same label (//==start== and //==end==), it works for the first one, but no for the second and third. What can be avoiding the regex to replace correctly the text?

https://play.golang.org/p/nZdHg5IfZ89

This is the code that I used, I pasted all the string because I want to be sure that it's not the one affecting me

package main

func main() {

    var re = regexp.MustCompile(Myregex)
    s := re.ReplaceAllLiteralString(originalString,"replaced")
    fmt.Println(s)

}

var Myregex = `\/\/==start==
(.+
)*\/\/==end==`

var originalString = `// @Author: someone
// @Date:   2018-01-23T16:46:09-04:00
// @Email:  [e-mail]
// @Filename: _material.themes.scss
// @Last modified by:   Someone
// @Last modified time: 2018-01-23T18:40:39-04:00

@include angular-material-theme($theme);

.app-dark {
    @include angular-material-theme($dark-theme);
}

.app-pink {
    @include angular-material-theme($pink-theme);
}

//==start==
//==end==`

Answer 1

Hope this will help you

func main() {
    var re = regexp.MustCompile(Myregex)
    s := re.ReplaceAllString(originalString, "replaced")
    fmt.Println(s)
}

var Myregex = `//==start==
.*
//==end==`

See in action: https://play.golang.org/p/GITAdHOOQOg