Initial commit (again)

.vim/autoload/airline/extensions/virtualenv.vim

@@ -0,0 +1,31 @@
+" MIT License. Copyright (c) 2013-2016 Bailey Ling.
+" vim: et ts=2 sts=2 sw=2
+
+scriptencoding utf-8
+
+let s:spc = g:airline_symbols.space
+
+function! airline#extensions#virtualenv#init(ext)
+  call a:ext.add_statusline_func('airline#extensions#virtualenv#apply')
+endfunction
+
+function! airline#extensions#virtualenv#apply(...)
+  if &filetype =~# "python"
+    if get(g:, 'virtualenv_loaded', 0)
+      let statusline = virtualenv#statusline()
+    else
+      let statusline = fnamemodify($VIRTUAL_ENV, ':t')
+    endif
+    if !empty(statusline)
+      call airline#extensions#append_to_section('x',
+            \ s:spc.g:airline_right_alt_sep.s:spc.statusline)
+    endif
+  endif
+endfunction
+
+function! airline#extensions#virtualenv#update()
+  if &filetype =~# "python"
+    call airline#extensions#virtualenv#apply()
+    call airline#update_statusline()
+  endif
+endfunction