From: Peter Vanderhaden <bostonantifan@...>
Date: 2007-11-22T22:33:24+09:00
Subject: help needed using a regex .sub

I'm trying to insert a NULL between the first pair of commas in the line
below if it's not already there.

Before: PWCLLP-243-00000002,,Images\1\pwcllp_243_00000002.tif,,,,

After:  PWCLLP-243-00000002,NULL,Images\1\pwcllp_243_00000002.tif,,,,

I want to replace only the first instance of ,, on the line with ,NULL,

I can do that with:  @record.sub!(',,',',NULL,')

The problem is if the record already has NULL between those 2 commas,
I'd get:

PWCLLP-243-00000002,NULL,Images\1\pwcllp_243_00000002.tif,NULL,,,

I tried this: @record.sub!('\[[:digit:]],,',',NULL,')

I figured that would replace the first instance of a digit followed by 2
commas, but it doesn't work.  I'm assuming my syntax is incorrect, but
I've tried all variations I can think of.  Anyone out there have any
ideas?  I'd be very grateful!
PV
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