As a simplified example, I want to get
^⬛+$ matched against
⬛⬛⬛ to yield a find match of
r := regexp.MustCompile("^⬛+$") matches := r.FindString("⬛️⬛️⬛️") fmt.Println(matches)
But it doesn’t match successfully even though this would work with regular ASCII characters.
I’m guessing there’s something I don’t know about Unicode matching, but I haven’t found any decent explanation in documentation yet.
Can someone explain the problem?
The regular expression matches a string containing one or more ⬛ (black square box).
The subject string is three pairs of black square box and variation selector-16. The variation selectors are invisible (on my terminal) and prevent a match.
Fix by removing the variation selectors from the subject string or adding the variation selector to the pattern.
Here’s the first fix: https://go.dev/play/p/oKIVnkC7TZ1