Vim tw={80=>76}

This provides room for three-digit line numbers, plus a delimiting space, on
an 80-character terminal. If additional lines numbers are needed, the file
is probably too big.

This is also more polite for e-mail.

vimrc

@@ -47,7 +47,7 @@ set sw=4
 set t_Co=256
 set title
 set ts=4
-set tw=80
+set tw=76
 set undolevels=3000
 set updatecount=50
 set visualbell