Fix handling of after directories

Closes #167

Author: tpope

autoload/pathogen.vim

@@ -181,7 +181,7 @@ function! pathogen#expand(pattern, ...) abort
  call extend(results, pathogen#expand(pattern))
  endfor
  elseif a:pattern =~# '{}'
- let pat = matchstr(a:pattern.after, '^.*{}[^*]*\%($\|[\\/]\)')
+ let pat = matchstr(a:pattern, '^.*{}[^*]*\%($\|[\\/]\)')
  let post = a:pattern[strlen(pat) : -1]
  let results = map(split(glob(substitute(pat, '{}', '*', 'g')), "\n"), 'v:val.post')
  else