--- files/vimrc-r3	2006-03-25 12:26:27.000000000 -0800
+++ /tmp/vimrc-r3	2013-03-10 16:10:16.159880240 -0700
@@ -148,7 +148,7 @@
   " Better to emerge app-vim/gentoo-syntax, which provides full syntax,
   " filetype and indent settings for all things Gentoo.
   au BufRead,BufNewFile *.e{build,class} let is_bash=1|setfiletype sh
-  au BufRead,BufNewFile *.e{build,class} set ts=4 sw=4 noexpandtab
+  au BufRead,BufNewFile *.e{build,class} setlocal ts=4 sw=4 noexpandtab
 
   " In text files, limit the width of text to 78 characters, but be careful
   " that we don't override the user's setting.
@@ -167,7 +167,7 @@
 
   " When editing a crontab file, set backupcopy to yes rather than auto. See
   " :help crontab and bug #53437.
-  autocmd FileType crontab set backupcopy=yes
+  autocmd FileType crontab setlocal backupcopy=yes
 
 augroup END