anchor.diff:        } else {
           _checkAndThrow(false, 'Expected block type.');
         }
  -      result[key.replaceAll(RegExp('\\s'), '')] = value!;
  +      result[key.replaceAll(RegExp(r'\s+'), '')] = value!;
         pos++;
       }
   
  
positive.code:       } else {
          _checkAndThrow(false, 'Expected block type.');
        }
        key = key.replaceFirstMapped(RegExp('\\s*(?:=)?(\\w+)\\s*'), (match) {
          return match.group(1).toString();
        });
        result[key] = value!;
        pos++;
  
negative.code:   static const String _other = 'other';
  
    /// Regular expression for looking for string literals.
    static final RegExp _regexLiteral = RegExp(r"'([{}#].*?)'");
  
    /// Pattern for looking for '' in the message.
    static final Pattern _patternDoubleApostrophe = "''";
  
    /// Create a MessageFormat for the ICU message string [pattern].
    /// It does parameter substitutions in a locale-aware way.
  