[antlr-interest] newbie problem

[ali azimi]

Hi,
   
  How can I modify the following antlr grammar to add a ',' ,whenever it matches more than one instance of 'variable':='expression' or 'informaltext'? In another word how can I modify the grammar to seperate the instances of for example 'infromaltext' by a comma?(so when there is just one 'informaltext', it does not add a comma).
   
  taskbody:(variable':='expression)+
 |informaltext+
 ;
   
  Many thanks in advance
   
  Regards,
  Al

       
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