in reply to Re^2: This has me stumped, pattern matching, 2 files
in thread This has me stumped, pattern matching, 2 files

Yes thats the assumption, and it is true. Per line there will be only one occurance of pattern X in A and pattern Y in B.
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Re^4: This has me stumped, pattern matching, 2 files
by ikegami (Patriarch) on Nov 21, 2006 at 15:54 UTC
    That's "no more". What about "no less"? Will there be an occurance of Y in every line of B?