I found very interesting the Powerline project. After several attempts, I managed to get it to work correctly for Vim. Then I did proceed with enabling it for tmux, by pasting the following line in my ~/.tmux.conf.

source '{repository_root}/powerline/bindings/tmux/powerline.conf'

It doesn't work as expected.

This is the way it looks at the moment.

How can I get it to work as expected?

Expectation: basically, date and time on the right side.

These screenshots come from another project, tmux-powerline, which evolved to Powerline. Therefore I expect the new plugin to have a similar status line organisation. Furthermore, this "expectation" is supported by this configuration file for tmux.

Further information

Vim version: VIM - Vi IMproved 7.4
tmux version: tmux 1.8