Added function to generate all case variations of a rune

misc.go

@@ -2,6 +2,7 @@ package main
 
 import (
 	"slices"
+	"unicode"
 )
 
 var whitespaceChars = []rune{' ', '\t', '\n'}
@@ -111,3 +112,12 @@ func genRange(start, end int) []int {
 	}
 	return toRet
 }
+
+// Returns a rune-slice containing all possible cases of the given rune.
+// At the moment, this includes:
+// 1. Upper case
+// 2. Lower case
+// 3. Title case
+func allCases(r rune) []rune {
+	return []rune{unicode.ToLower(r), unicode.ToUpper(r), unicode.ToTitle(r)}
+}