lib/unibits/symbolify.rb in unibits-1.2.0 vs lib/unibits/symbolify.rb in unibits-1.2.1

@@ -78,9 +78,11 @@
     COULD_BE_WHITESPACE = '[\p{Space}­᠎​‌‍⁠⁡⁢⁣⁤⠀𛲠𛲡𛲢𛲣𝅳𝅴𝅵𝅶𝅷𝅸𝅹𝅺]'.freeze
 
     def self.symbolify(char, encoding = char.encoding)
       return "n/a" if Unicode::Categories.category(char) == "Cn"
 
+      char = char.dup
+
       char.tr!(
         ASCII_CONTROL_CODEPOINTS.encode(encoding),
         ASCII_CONTROL_SYMBOLS.encode(encoding)
       )
       char.gsub!(