--- files/vimrc-r4	2010-04-15 12:30:32.000000000 -0700
+++ /tmp/vimrc-r4	2013-03-10 16:10:48.359879962 -0700
@@ -154,7 +154,7 @@
   " 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.
@@ -173,7 +173,7 @@
 
   " 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
 
   " If we previously detected that the default encoding is not UTF-8
   " (g:added_fenc_utf8), assume that a file with only ASCII characters (or no
@@ -182,7 +182,7 @@
   autocmd BufReadPost *
         \ if exists("g:added_fenc_utf8") && &fileencoding == "utf-8" && 
         \    ! &bomb && search('[\x80-\xFF]','nw') == 0 && &modifiable |
-        \       set fileencoding= |
+        \       setlocal fileencoding= |
         \ endif
 
 augroup END