Merge pull request #5461 from jamessan/emoji-ui-regression

ui: Fix the call to utf_ambiguous_width

src/nvim/mbyte.c

@@ -1724,7 +1724,7 @@ int utf_class(int c)
   return 2;
 }
 
-int utf_ambiguous_width(int c)
+bool utf_ambiguous_width(int c)
 {
   return c >= 0x80 && (intable(ambiguous, ARRAY_SIZE(ambiguous), c)
                        || intable(emoji_all, ARRAY_SIZE(emoji_all), c));

src/nvim/ui.c

@@ -397,9 +397,8 @@ static void send_output(uint8_t **ptr)
     size_t clen = (size_t)mb_ptr2len(p);
     UI_CALL(put, p, (size_t)clen);
     col++;
-    if (utf_ambiguous_width(*p)) {
+    if (utf_ambiguous_width(utf_ptr2char(p))) {
       pending_cursor_update = true;
-      flush_cursor_update();
     } else if (mb_ptr2cells(p) > 1) {
       // double cell character, blank the next cell
       UI_CALL(put, NULL, 0);