More work, finishing the parse_input and lots of reducer

tests/test_lexer.expected_results

@@ -3,20 +3,20 @@ test: test true
 old contributed tests
 b: b true
 b: b true
-$EOF$: no_value true
+$EOF$: $EOF$ false
 
 a*: aaa true
 b: b true
 a*: aa true
 b: b true
 b: b true
-$EOF$: no_value true
+$EOF$: $EOF$ false
 
 a|b: b true
-$INVALID$: no_value true
+$INVALID$: $INVALID$ false
 
 xyzzy: xyzzy true
-$EOF$: no_value true
+$EOF$: $EOF$ false
 
 (i|n|t|e)+: intent true
-$EOF$: no_value true
+$EOF$: $EOF$ false