bling/vim-airline — pull request #413 by ralesi (2014-01-16 04:32:16+00:00)
Title: Allow changes to airline_symbols.branch after init

If the user updates the airline_symbols.branch variable later in the vimrc, the value will not update after the initial init. Since these variables are only used in the get_head() function, I moved them locally within the function to allow evaluation on each instance.