anchor.diff:     ;
   
   macroRepSep
  -   : '::' //TODO: Tokenexcept delimiters and repetition operators
  +   : '::' //TODO: Token except delimiters and repetition operators
      ;
   
   macroRepOp: '*' | '+' | '?';
   
   macroTranscriber: delimTokenTree;
   
  -crate: innerAttribute* item*;
  -
  -configurationPredicate
  -   : configurationOption
  -   | configurationAll
  -   | configurationAny
  -   | configurationNot
  -   ;
  -configurationOption: identifier ( '=' (STRING_LITERAL | RAW_STRING_LITERAL))?;
  -configurationAll: 'all' '(' configurationPredicateList? ')';
  -configurationAny: 'any' '(' configurationPredicateList? ')';
  -configurationNot: 'not' '(' configurationPredicate ')';
  -
  -configurationPredicateList
  -   : configurationPredicate (',' configurationPredicate)* ','?
  -   ;
  -cfgAttribute: 'cfg' '(' configurationPredicate ')';
  -cfgAttrAttribute: 'cfg_attr' '(' configurationPredicate ',' cfgAttrs? ')';
  -cfgAttrs: attr (',' attr)* ','?;
  +//configurationPredicate
  +// : configurationOption | configurationAll | configurationAny | configurationNot ; configurationOption: identifier (
  +// '=' (STRING_LITERAL | RAW_STRING_LITERAL))?; configurationAll: 'all' '(' configurationPredicateList? ')';
  +// configurationAny: 'any' '(' configurationPredicateList? ')'; configurationNot: 'not' '(' configurationPredicate ')';
  +
  +//configurationPredicateList
  +// : configurationPredicate (',' configurationPredicate)* ','? ; cfgAttribute: 'cfg' '(' configurationPredicate ')';
  +// cfgAttrAttribute: 'cfg_attr' '(' configurationPredicate ',' cfgAttrs? ')'; cfgAttrs: attr (',' attr)* ','?;
   
   item: outerAttribute* visItem | macroItem;
   visItem
  
positive.code: 
  simplePathSegment: identifier | 'super' | 'self' | 'crate' | '$crate';
  
  pathInExpression: '::'? pathExprSegment ('::' pathExprSegment);
  
  pathExprSegment: pathIdentSegment ('::' genericArgs)?;
  
  
negative.code:    : outerAttribute*
     (
        macroInvocationSemi
        | (visibility? ( typeAlias | constantItem | method | function))
     )
     ;
  
  