Right now I have the following in my .vimrc:
.vimrc
au BufWritePost *.c,*.cpp,*.h !ctags -R
There are a few problems with this:
In my opninion, plugin Indexer is better.
http://www.vim.org/scripts/script.php?script_id=3221
It can be:
1) an add-on for project.tar.gz
2) an independent plugin