[Parrot] #34: deprecate index syntax for substr

[Parrot]

#34: deprecate index syntax for substr
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 Reporter:  parrotcode at gmail.com  |        Owner:  kjs
     Type:  todo                  |       Status:  new
 Priority:  normal                |    Milestone:     
Component:  core                  |      Version:     
 Severity:  low                   |   Resolution:     
 Keywords:  PIR IMCC              |         Lang:     
    Patch:                        |     Platform:     
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Changes (by coke):

  * keywords:  PIR => PIR IMCC
  * summary:  [PIR] deprecate index syntax for substr => deprecate index
              syntax for substr

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Ticket URL: <https://trac.parrot.org/parrot/ticket/34#comment:2>
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