" Use only 65 characters per line as given in rfc1855.
setlocal textwidth=65
-" Replace trailing spaces except after mail headers (To:, etc.) or a signature
-" delimiter (-- ).
-silent! %s/\(^\([a-zA-z-]\+:\|--\)\)\@<!\s\+$//
+" Replace trailing whitespace after quotes.
+silent! %s/\(^>.\{-}\)\@<=\s\+$//
" Remove spaces between quotes (> > to >>).
-silent! %s/^\(>\+\) >/\1>/g
-silent! %s/^\(>\+\) >/\1>/g
-silent! %s/^\(>\+\) >/\1>/g
+silent! %s/^>\+\zs >/>/g
+silent! %s/^>\+\zs >/>/g
+silent! %s/^>\+\zs >/>/g
" Move directly after the headers.
normal gg