[ale] Single out a alarm with regex

[Jerry Yu]

could 'pcretest'  be a more suitable tool here?

On 10/5/06, Christopher Fowler <cfowler at outpostsentinel.com> wrote:
>
> On Thu, 2006-10-05 at 09:58 -0400, Alex LeDonne wrote:
> > Can anything come after the type? Or, more particularly, can anything
> > come after the type if the type is "MAINT INDICATION" ?
>
> Yes.  It can be a timestamp or more.
>
> > Finally, is
> > there guaranteed to be at least one whitespace character preceding the
> > type?
>
> Yes
>
> > This is critical if you want the zero-width assertion to work...
> > if you have .* immediately before a zero-width negative lookahead,
> > when the negative assertion blocks the match, the engine will
> > backtrack and .* will consume the next character, the negative no
> > longer blocks, and the pattern matches.
>
> I'm sorry I showed Perl code and everyone is assuming I'm writing the
> code in perl.  I'm only using perl to test the regex.  This regex will
> go in a list of 100 other regexs and a C program that is using the gnu
> regex library will be doing the searches.  It is not possible to grab
> anything than later look for 'MAINT INDICATION' like this:
>
>         if (/^DCH:\s+\d+\s+(\w+).*$/) {
>                 if ($1 ne 'MAINT') {
>                         foo;
>                 }
>         }
>
> Everything has to be done inside of the regex.
>
>
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