updated for version 7.0f01
diff --git a/runtime/plugin/vimballPlugin.vim b/runtime/plugin/vimballPlugin.vim
index 3515889..e1ea57e 100644
--- a/runtime/plugin/vimballPlugin.vim
+++ b/runtime/plugin/vimballPlugin.vim
@@ -21,6 +21,7 @@
com! -ra -na=+ -bang MkVimball call vimball#MkVimball(<line1>,<line2>,<bang>0,<f-args>)
com! -na=0 UseVimball call vimball#Vimball(1)
com! -na=0 VimballList call vimball#Vimball(0)
+au BufEnter *.vba.gz,*.vba.bz2,*.vba.zip call vimball#Decompress(expand("<amatch>"))
au BufEnter *.vba echohl WarningMsg | echo "Source this file to extract it! (:so %)" | echohl None
let &cpo= s:keepcpo