"W. Reilly Cooley" <wcooley(_at_)navi(_dot_)net> wrote:
does O`reilly have a book? i'm not sure if they do, but that would be the
first place i'd start before re-inventing the wheel
www.ora.com
O'Reilly has a book on regular expressions, which indoubitably would be
useful. Looking at books on Perl or Sed (both available from
O'Reilly) would also be a good place to start.
_Mastering Regular Expressions_ by Jeffrey Friedl is a good book, yes.
But it won't help much for procmail (unless you are crazy enough to
run my perl-embed version[1]). Procmail regexps are very weka compared
to a *modern* egrep and not that antique thing emulated inside it.
The initial chapters of _MRE_ might help with simple RE crafting, but
procmail has so many deviations from other implementations that it would
certainly lead to confusion.
The best way to learn procmail is to look at other people's well
documented recipes. Era's procmail links is a good place to start,
<URL:http://www.iki.fi/~era/procmail/links.html>.
[1] <URL:ftp://ftp.netusa.net/users/eli/procmail3.11p7-perl.tar.gz>
100% undocmented changes, not for the faint of code. I'm using
it but unless you like alpha version software, you should wait.
Elijah
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