How to write match nth grouped subexpression?

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Subject	How to write match nth grouped subexpression?
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Hi,

It says that: match checks for a match only at the beginning of the string.
Then, it also says that: \1...\9	Matches nth grouped subexpression.

I don't know how to write a script to include grouped subexpression in match?


Thanks,

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How to write match nth grouped subexpression? rxjwg98@gmail.com - 2014-07-10 01:57 -0700
  Re: How to write match nth grouped subexpression? Cameron Simpson <cs@zip.com.au> - 2014-07-10 19:50 +1000

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