gnubol: problem 9

[RKRayhawk@aol.com]

In a message dated 12/22/99 6:19:34 PM EST, tej@melbpc.org.au writes:

<< 
 /* problem 9. 
    - two different repeating constructs in the inspect verb start
 with 'identifier' creating an ambiguity
    when there is an identifier after 'before/after initial
 literal/identifier'.
 
    solution 9.
    - scan ahead within inspect verb and change the tk_generic
 name token to a magic name 
    if it is followed by 'for'
    (with possible intervening of/in tk_generic_name... and array
 reference)
 
 */
  >>

This is difficult to see. Can you show just a few examples or identify the 
rules that encounter this?  It just seems like those lists of data references 
need to yield to key words ALL/LEADING/CHARACTER/FIRST permitting a shift.  
Am I understanding? 

In the TALLYING branch the first identifier before the FOR does not repeat in 
any way, as far as I understand. The contents of the FOR clause can be a 
repeating form, but it starts with ALL/LEADING/CHARACTERS and ends with the 
data references

In the REPLACING clause the repetition of the ALL/LEADING/FIRST phrase seems 
to be similarly unambiguous on the outside, the interior can repeat; which 
interior starts and ends 
with a data reference. Is that the problem? That looks like no fun at all, 
and indeed one of the few places where a construct does not start with a 
keyword, but is that really an problem?

At anyrate, why would you want to transfor the leading data reference when it 
is followed by FOR, it seem sth eleast ambiguous part of all.


Bob Rayhawk
RKRayhawk@aol.com



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