Update vim statusline example

The statusline example mostly works now, even with different modes. The
main problem is still non-current windows, which receive the contents of
the currently active window for most segments.

examples/vim/pl.py

@@ -1,54 +1,23 @@
 # -*- coding: utf-8 -*-
 
-import vim
 from powerline.core import Powerline
 from powerline.ext.vim.bindings import vim_get_func
 
 vim_winwidth = vim_get_func('winwidth', rettype=int)
-vim_hlexists = vim_get_func('hlexists', rettype=int)
 vim_getwinvar = vim_get_func('getwinvar')
 vim_setwinvar = vim_get_func('setwinvar')
 
-created_hl_groups = []
-percent_placeholder = u''
-
 pl = Powerline('vim')
 
 
 def statusline(winnr):
 	current = vim_getwinvar(winnr, 'current')
-	windata = vim_getwinvar(winnr, 'powerline')
 	winwidth = vim_winwidth(winnr)
 
-	if current or not windata:
 	mode = vim_get_func('mode')()
-		if mode == 'n':
-			mode = '__default__'
-
-		stl = pl.renderer.render(mode, winwidth)
-
-		vim_setwinvar(winnr, 'powerline', stl)
-	else:
+	if not current:
 		mode = 'nc'
-		stl = vim_getwinvar(winnr, 'powerline').decode('utf-8')
 
-	# Replace percent placeholders
-	stl = stl.replace(percent_placeholder, '%%')
+	statusline = pl.renderer.render(mode, winwidth)
 
-	# Create highlighting groups
-	for hl in pl.renderer.hl_groups.values():
-		if hl['name'] in created_hl_groups:
-			continue
-
-		vim.command('hi {group} ctermfg={ctermfg} guifg={guifg} guibg={guibg} ctermbg={ctermbg} cterm={attr} gui={attr}'.format(
-				group=hl['name'],
-				ctermfg=hl['ctermfg'],
-				guifg='#{0:06x}'.format(hl['guifg']) if hl['guifg'] != 'NONE' else 'NONE',
-				ctermbg=hl['ctermbg'],
-				guibg='#{0:06x}'.format(hl['guibg']) if hl['guibg'] != 'NONE' else 'NONE',
-				attr=','.join(hl['attr']),
-			))
-
-		created_hl_groups.append(hl['name'])
-
-	return stl
+	return statusline