fixup! complete_files: more fixes

Author: blueyed

plugin/grepper.vim

@@ -240,16 +240,16 @@ function! grepper#complete_files(lead, _line, _pos)
   if path[0:1] ==# '~/'
     let home = expand('~')
     let home_len = len(home)
-    return map(split(globpath(home, path[2:].'*'), '\n'), 'head . ''~'' . v:val[home_len:] . (isdirectory(v:val) ? s:slash : '''')')
+    return map(split(globpath(home, path[2:].'*'), '\n'), "head . '~' . v:val[home_len:] . (isdirectory(v:val) ? s:slash : '')")
   " handle (explicit) relative paths
   elseif path[0:1] ==# './'
-    return map(split(globpath('.'.s:slash, path[2:].'*'), '\n'), 'head . v:val . (isdirectory(v:val) ? s:slash : '''')')
+    return map(split(globpath('.'.s:slash, path[2:].'*'), '\n'), "head . v:val . (isdirectory(v:val) ? s:slash : '')")
   " handle absolute paths
   elseif path[0] ==# '/'
-    return map(split(globpath(s:slash, path.'*'), '\n'), 'head . v:val[1:] . (isdirectory(v:val) ? s:slash : '''')')
+    return map(split(globpath(s:slash, path.'*'), '\n'), "head . v:val[1:] . (isdirectory(v:val) ? s:slash : '')")
   " handle relative paths
   else
-    return map(split(globpath('.'.s:slash, path.'*'), '\n'), 'head . ''.'' . v:val[1:] . (isdirectory(v:val) ? s:slash : "")')
+    return map(split(globpath('.'.s:slash, path.'*'), '\n'), "head . '.' . v:val[1:] . (isdirectory(v:val) ? s:slash : '')")
   endif
 endfunction