[The List Server Administrator at UNH]

I agree that trying to build this into the server would not be
a good idea.  But I do think this would be a good thing to add to
the list of "internationalization features" for future version.

As Mailman does absolutely _no_ munging of "Re:" subject prefixes today, I don't see why it should try to do anything with language-specific versions of this prefix, either. This is really a _client_ problem.

Trying to be smart about these things on the server _will_ backfire.

What site- og list-specific message filters will do to messages they get fed (in post-1.0 Mailman), however, is not something Mailman can be held responsible for. So, if someone wants to do something like

perl -ple '$_ = "Subject: Re: $3" if m/^subject:\s*((re|sv|ad):\s*)+(.*)/i'

they're welcome to do so in a home-made filter (but don't blame Mailman when this filter mangles a messages Subject in a way it shouldn't have done).

My point is, it might be worthwhile to have localization be
configurable on a list-by-list basis since I have seen list
server sites that support both English and Spanish language
lists on the same server.

On this I agree completely.

Harald