trailing whitespace visible on some buffers

[Luis O. Silva]

Dear Emacs community,

This is an elementary question, but I haven't found the
solution of my problem.

I want to set the buffer-local variable
`show-trailing-whitespace' to `t' for all buffers except
for *info*, *diary*, *calendar*, and *mail presentation*. In
the emacs node of info I found how to set local variables to
different _modes_ using "hooks", but I don't know how to set
buffer-local variables to concrete buffers.

Thank you very much in advance,
luis


-- 
Luis Octavio Silva P.
St. Petersburg State University.
66/3 Botanicheskaya St., Apt.119/2
Stary Peterhof
St. Petersburg, Russia.