I can now use keyword in concept definition and parsing

src/parsers/BnfNodeParser.py

@@ -400,11 +400,11 @@ class StrMatch(Match):
 
     def _parse(self, parser_helper):
         token = parser_helper.get_token()
-        m = str(token.value).lower() == self.to_match.lower() if self.ignore_case \
-            else token.value == self.to_match
+        m = token.str_value.lower() == self.to_match.lower() if self.ignore_case \
+            else token.strip_quote == self.to_match
 
         if m:
-            node = TerminalNode(self, parser_helper.pos, parser_helper.pos, token.value)
+            node = TerminalNode(self, parser_helper.pos, parser_helper.pos, token.str_value)
             parser_helper.next_token()
             return node
 
@@ -882,7 +882,7 @@ class BnfNodeParser(BaseNodeParser):
                 else:
                     # regular concepts
                     tokens = Tokenizer(concept.name)
-                    nodes = [StrMatch(core.utils.strip_quotes(token.value)) for token in list(tokens)[:-1]]
+                    nodes = [StrMatch(token.strip_quote) for token in list(tokens)[:-1]]
                     pe = inner_resolve(nodes[0] if len(nodes) == 1 else Sequence(nodes), inner_already_seen)
 
                 if not isinstance(pe, ParsingExpression):