show-trailing-whitespace vs. flyspell

[Dan Jacobson]

It was War on Whiteyspace week here at the ranch.  I had my
(setq-default show-trailing-whitespace t) x-ray specs on and was
finding even trailing whitespaces made by computer expert Eric
Raymond's fetchmail program, just check syslog.

But then I typed
a a a a a a SPC <escape> <tab> SPC d s f s...
and noticed that when one does this flyspell action, the trailing
whitespace color starts dogging the cursor...
if one does not type the SPC then it doesnt happen.

p.s. the color is called trailing-whitespace, not
trailing-whitespace-face, unlike others.

http://jidanni.org/comp/emacs.txt is my .emacs, just in case you need
to check it.