Vim航空公司显示问题

Question

我正在建立vim-airline，因为我无法让它显示为电力线。任何帮助，将不胜感激。 的.vimrc

set noswapfile
execute pathogen#infect()
syntax on
set laststatus=2 
set lazyredraw
let g:airline_theme             = 'powerlineish'
let g:airline_enable_branch     = 1
let g:airline_enable_syntastic  = 1
let g:airline_left_sep          = '⮀'
let g:airline_left_alt_sep      = '⮁'
let g:airline_right_sep         = '⮂'
let g:airline_right_alt_sep     = '⮃'
let g:airline_branch_prefix     = '⭠'
let g:airline_readonly_symbol   = '⭤'
let g:airline_linecolumn_prefix = '⭡'
highlight constant ctermfg=yellow

这就是它的样子。