[Chad Perrin <perrin / apotheon.com>, 2007-09-05 16.10 CEST]
[...]
>   2. I can munge the subject line before it hits my inbox using tools
>   available to me as a FreeBSD user -- tools including Ruby, procmail,
>   Perl, and other options.  This would suit *me* perfectly, but because I
>   tend to be more courteous than that, I won't take that approach.  I'm
>   sure you'd all love to see every message I send to the list suddenly
>   start appearing with [Rb] at the beginning of the subject line.  Also,
>   the fact I can do this doesn't address the preferences of others who
>   may be using more crippled MUAs and OS platforms.

Just add, in your .procmailrc, a rule to add a header "X-Label: ruby-talk"
to all messages from this list. Then, in your .muttrc, add "%?y?[%y]?"
somewhere in your index_format variable (before %s is a good place).

Good luck.
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