Merge #4633: support "special" highlight (undercurl)

Closes #2040
Closes #3370

1 files changed, 7 insertions, 2 deletions

diff --git a/test/functional/ui/screen.lua b/test/functional/ui/screen.lua
index a11fab18a2..6372cbe081 100644
--- a/test/functional/ui/screen.lua
+++ b/test/functional/ui/screen.lua
@@ -425,6 +425,10 @@ function Screen:_handle_update_bg(bg)
   self._bg = bg
 end
 
+function Screen:_handle_update_sp(sp)
+  self._sp = sp
+end
+
 function Screen:_handle_suspend()
   self.suspended = true
 end
@@ -573,7 +577,7 @@ function Screen:_pprint_attrs(attrs)
     local items = {}
     for f, v in pairs(attrs) do
       local desc = tostring(v)
-      if f == "foreground" or f == "background" then
+      if f == "foreground" or f == "background" or f == "special" then
         if Screen.colornames[v] ~= nil then
           desc = "Screen.colors."..Screen.colornames[v]
         end
@@ -614,7 +618,8 @@ function Screen:_equal_attrs(a, b)
        a.underline == b.underline and a.undercurl == b.undercurl and
        a.italic == b.italic and a.reverse == b.reverse and
        a.foreground == b.foreground and
-       a.background == b.background
+       a.background == b.background and
+       a.special == b.special
 end
 
 function Screen:_attr_index(attrs, attr)