diff -Naur -x '*.orig' bash-completion-20090910/bash_completion bash-completion-20090910-disable-user-completion/bash_completion
--- bash-completion-20090910/bash_completion	2009-09-09 18:03:07.000000000 +0200
+++ bash-completion-20090910-disable-user-completion/bash_completion	2009-09-10 22:33:34.000000000 +0200
@@ -1546,9 +1546,6 @@
 fi
 unset i
 
-# source user completion file
-[ $BASH_COMPLETION != ~/.bash_completion -a -r ~/.bash_completion ] \
-	&& . ~/.bash_completion
 unset -f have
 unset UNAME USERLAND default dirnames filenames have nospace bashdefault \
 	plusdirs compopt