From: james.harris.1@gmail.com   
      
   On Jan 3, 9:33 pm, James Harris  wrote:   
      
   A small correction was needed, as follows, as I had omitted the loop-   
   out condition.   
      
   > function value_parse(op1)   
   >   v1 = value() //identifier or literal   
   >   while true   
   >     op2 = current token or dummy end of expression   
   >     if lparen //parens of a function call or similar   
   >       v1 = args_parse(op2)   
   >       consume rparen   
   >     else if prec(op2) > prec(op1)   
   >       if incompatible(op1, op2)   
   >         raise "incompatible - grouping parens needed"   
   >       v1 = node(POSTFIX_OP, v1)   
       else   
         break   
   >   return v1   
      
   James   
      
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