title: How to set window title from vim in tmux window
body: <p>I use <code>cscope+ctags+vim</code> to browse/edit my source code. I have put <code>set title</code> in my <code>.vimrc</code> to display the <code>filename</code> I am currently editing/reading in the window title bar. This works perfectly in bash. However when I open <code>vim</code> from <code>tmux</code>, the window title bar doesn't not changes. How to fix this? </p>