Re: scanning for text within the first few lines of the body?

PSE-L(_at_)mail(_dot_)professional(_dot_)org (Professional Software 
Engineering) writes:
> I'd just as soon that they didn't need to spawn processes any more often 
> than necessary, so I'm trying to figure out the lowest overhead way to 
> restrict a search of the body text to just the first few lines.
Few == ?  Three?  Three, but only if they contain no non-whitespace
characters?

(Come on, Sean, you know how important it is to be specific!)


> Optimally, I'd like to be able to check whether a text is the first thing 
> in the body.  Specifically, I'm looking for _properly formatted_ majordomo 
> approval commands (which are submitted to the list address, not the central 
> majordomo address), which should bypass the filter set.
>
> Any suggestions?
>
> Currently, the condition is simply:
>
> :0B
> * ^Approved:[  ]+[^    ]+$
> {
>       do whatever
> }
>
> This doesn't consider whether the text is the first non-whitespace in tbe 
> whole body, or limit the search to the first few lines.
To allow at most three lines containing no non-whitespace characters before
the 'Approved' line you would write something like:

        :0 B
        * ^^([  ]*$([   ]*$([   ]*$)?)?)?Approved:[     ]+[^    ]+$
        {
                do whatever
        }

Note the '^^' to anchor against the beginning of the body.


Philip Guenther
_______________________________________________
procmail mailing list
procmail(_at_)lists(_dot_)RWTH-Aachen(_dot_)DE
http://MailMan.RWTH-Aachen.DE/mailman/listinfo/procmail