Patch 9.0.0636
Problem:    Underline color does not work in terminals that don't send a
            termresponse.
Solution:   Do output t_8u if it was set explicitly. (closes #11253)
Files:      src/term.c


*** ../vim-9.0.0635/src/term.c  2022-08-26 17:52:47.890406156 +0100
--- src/term.c  2022-10-01 21:13:25.301399966 +0100
***************
*** 153,159 ****
  
  // The t_8u code may default to a value but get reset when the term response 
is
  // received.  To avoid redrawing too often, only redraw when t_8u is not reset
! // and it was supposed to be written.
  // FALSE -> don't output t_8u yet
  // MAYBE -> tried outputing t_8u while FALSE
  // OK    -> can write t_8u
--- 153,159 ----
  
  // The t_8u code may default to a value but get reset when the term response 
is
  // received.  To avoid redrawing too often, only redraw when t_8u is not reset
! // and it was supposed to be written.  Unless t_8u was set explicitly.
  // FALSE -> don't output t_8u yet
  // MAYBE -> tried outputing t_8u while FALSE
  // OK    -> can write t_8u
***************
*** 3011,3017 ****
  term_ul_rgb_color(guicolor_T rgb)
  {
  # ifdef FEAT_TERMRESPONSE
!     if (write_t_8u_state != OK)
        write_t_8u_state = MAYBE;
      else
  # endif
--- 3011,3020 ----
  term_ul_rgb_color(guicolor_T rgb)
  {
  # ifdef FEAT_TERMRESPONSE
!     // If the user explicitly sets t_8u then use it.  Otherwise wait for
!     // termresponse to be received, which is when t_8u would be set and a
!     // redraw is needed if it was used.
!     if (!option_was_set((char_u *)"t_8u") && write_t_8u_state != OK)
        write_t_8u_state = MAYBE;
      else
  # endif
*** ../vim-9.0.0635/src/version.c       2022-10-01 20:17:13.820291832 +0100
--- src/version.c       2022-10-01 21:15:07.493355747 +0100
***************
*** 701,702 ****
--- 701,704 ----
  {   /* Add new patch number below this line */
+ /**/
+     636,
  /**/

-- 
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when they try to decide which one"

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///                                                                      \\\
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