Re: checklink : Is it possible to check limited url regex?

On Tuesday 10 March 2009, howard chen wrote:
> For example.
>
> -X, --exclude regexp
> Do not check links whose full, canonical URIs match regexp. Note that
> this option limits recursion the same way as --exclude-docs with the
> same regular expression would.
>
>
> But I want to check only under a certain subdomain, e.g.
> http://a.example.com
>
> Is it possible currently?

Yes, but it's quite hairy.  If interested in details, check out look-around 
assertions in the Perl regular expressions documentation ("man perlre" in 
Unixish systems).

This should work for http://a.example.com:

-X '(?!^http://a\.example\.com).{20}/'

The magic number 20 is the number of characters in http://a.example.com.  For 
https://foo.example.com it would be 23 etc.