Re: mail regex

[Alain Magloire]

Bonjour

...

> Why? One can always escape metacharacters, e.g:
> 
>       from /a \* subject/
> 
> 
> I believe it is a very useful extension. We can provide an environment
> variable controlling this feature, so that those who don't need it
> might simply place
> 
>       set noregex
> 
> in their mail.rc file to turn the feature off.
> 
> I'd vote that we add a check for regexp to configure.in with a fallback
> rx.c or regex.c in lib/.

Done.

> Actually, I am thinking about a more general approach. Sometimes it
> is necessary to select letters on the contents of an arbitrary
> header.  So, I'd extend the search syntax to something like
> 
>       Received:/.*mirddin.*/
> 
> meaning select all the letters with the given regexp in Received: header.
> If the "header:" portion is omitted, it defaults to Subject:.
> Any comments?

Once, you have a formal semantics in msgset.y, I'll be happy to implement.

--
alain