[texhax] [mailman] macro -> URL (was Arrow head too large ...)

[Karl Berry]

    I guess my browser changed "m at th" into m at th

Not your browser.  It is a standard feature of mailman as a trivial
antispam measure.  Even though it is trivial, there are still plenty of
totally stupid harvesters out there, so I don't think it would be an
overall win to turn it off.  We TeX-using humans can recognize what is
going on.

karl