1package text
 2
 3import (
 4	"strings"
 5	"unicode"
 6
 7	"golang.org/x/text/runes"
 8	"golang.org/x/text/transform"
 9)
10
11func Cleanup(text string) (string, error) {
12	// windows new line, Github, really ?
13	text = strings.Replace(text, "\r\n", "\n", -1)
14
15	// remove all unicode control characters except
16	// '\n', '\r' and '\t'
17	t := runes.Remove(runes.Predicate(func(r rune) bool {
18		switch r {
19		case '\r', '\n', '\t':
20			return false
21		}
22		return unicode.IsControl(r)
23	}))
24	sanitized, _, err := transform.String(t, text)
25	if err != nil {
26		return "", err
27	}
28
29	// trim extra new line not displayed in the github UI but still present in the data
30	return strings.TrimSpace(sanitized), nil
31}