Experimentar scanner: Unify the API to Scanner API some more.

src/lexer/lexer_py.re

 # Copyright 2013 the V8 project authors. All rights reserved.
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 #       notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
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@@ skipping 61 matching lines @@
   PUSH_TOKEN(Token::LT);
 }|>
 
 "<!"        <|{
   BACKWARD(1);
   PUSH_TOKEN(Token::LT);
 }|>
 
 
 "-->" <{
-  if (!just_seen_line_terminator_) {
+  if (!has_line_terminator_before_next_) {
     BACKWARD(1);
     PUSH_TOKEN(Token::DEC);
   }
 }||SingleLineComment>
 
 ">>>="        <|push_token(ASSIGN_SHR)|>
 ">>>"         <|push_token(SHR)|>
 "<<="         <|push_token(ASSIGN_SHL)|>
 ">>="         <|push_token(ASSIGN_SAR)|>
 "<="          <|push_token(LTE)|>
@@ skipping 137 matching lines @@
 eos <|skip_and_terminate|>
 catch_all <||continue>
 
 <<MultiLineComment>>
 /\*+\//             <|skip|>
 # TODO find a way to generate the below rule
 /\*+[^\/*]/       <||continue>
 line_terminator  <push_line_terminator||continue>
 eos <|terminate_illegal|>
 catch_all        <||continue>