Re: grep: -i option not working i cronjobs

[Tim Waugh]

On Thu, Nov 11, 2004 at 10:16:10PM -0400, Tony Abou-Assaleh wrote:

> I can see at least 2 possible approaches:
> 
> 1) Have 2 buffers, original and TOLOWERCASE'ed, and when printing the
> output, print it from the original buffer
> 2) convert the regular expression to match both cases for any literals
> simply by expanding each alphabetic symbol to a character class of it's
> lowercase and upper case forms: e.g, 'a' -> '[aA]', 'B'-> '[bB]', etc.
> 
> My guess is that for most cases, the second solution would be faster. But
> that's just a semi-educated guess at the moment. Does anyone know better?

There is a 3rd approach which hopefully we will use longer-term:

3) upgrade to a newer regex.c and just set REG_ICASE when -i is used

Tim.
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