[Chicken-janitors] #1066: irregex chunked matching breaks when using positive lookbehind with submatches

[Chicken Trac]

#1066: irregex chunked matching breaks when using positive lookbehind with
submatches
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 Reporter:  sjamaan  |       Owner:       
     Type:  defect   |      Status:  new  
 Priority:  major    |   Milestone:  4.9.0
Component:  unknown  |     Version:  4.8.x
 Keywords:  irregex  |  
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 When using a custom, non-trivial chunker (ie, not the shipped string
 chunker), submatches in (positive) lookbehind patterns will be returned as
 string-chunker type chunks.  This breaks the expectation of returning a
 chunk in our own custom type like we get with any other submatch.

 This has been reported to Alex, and is included in the upstream test suite
 as a breaking test. Too complicated to make a simple test script for
 CHICKEN, but when fixed should be backported.

 For now I hope we can get this into 4.9.0, but it may need to be
 postponed.

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Ticket URL: <http://bugs.call-cc.org/ticket/1066>
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