Merge #6816 'TUI improvements'

Removed these commits (test-suite changes):
e2fba01910e0
7c809c4bc708
18e7cd9e9727

1 files changed, 5 insertions, 6 deletions

diff --git a/src/nvim/screen.c b/src/nvim/screen.c
index 2f7fa8724f..a8353153fd 100644
--- a/src/nvim/screen.c
+++ b/src/nvim/screen.c
@@ -4230,7 +4230,6 @@ win_line (
          * (regardless of the xn,am settings).
          * Only do this if the cursor is on the current line
          * (something has been written in it).
-         * Don't do this for the GUI.
          * Don't do this for double-width characters.
          * Don't do this for a window not at the right screen border.
          */
@@ -5846,12 +5845,12 @@ static void screen_char(unsigned off, int row, int col)
   if (row >= screen_Rows || col >= screen_Columns)
     return;
 
-  /* Outputting the last character on the screen may scrollup the screen.
-   * Don't to it!  Mark the character invalid (update it when scrolled up) */
+  // Outputting the last character on the screen may scrollup the screen.
+  // Don't to it!  Mark the character invalid (update it when scrolled up)
+  // FIXME: The premise here is not actually true (cf. deferred wrap).
   if (row == screen_Rows - 1 && col == screen_Columns - 1
-      /* account for first command-line character in rightleft mode */
-      && !cmdmsg_rl
-      ) {
+      // account for first command-line character in rightleft mode
+      && !cmdmsg_rl) {
     ScreenAttrs[off] = (sattr_T)-1;
     return;
   }