Patch 9.0.1199
Problem:    Crash when using kitty and using a mapping with <Esc>.
Solution:   Do not try setting did_simplify when it is NULL. (closes #11817)
Files:      src/misc2.c, src/term.c, src/vim.h


*** ../vim-9.0.1198/src/misc2.c 2023-01-14 12:32:24.219984103 +0000
--- src/misc2.c 2023-01-14 21:02:43.290773709 +0000
***************
*** 1498,1503 ****
--- 1498,1504 ----
                        key = DEL;
                }
                else if (key == 27
+                       && (flags & FSK_FROM_PART) != 0
                        && (kitty_protocol_state == KKPS_ENABLED
                            || kitty_protocol_state == KKPS_DISABLED))
                {
***************
*** 1506,1512 ****
                    // character and set did_simplify, then in the
                    // non-simplified keys use K_ESC.
                    if ((flags & FSK_SIMPLIFY) != 0)
!                       *did_simplify = TRUE;
                    else
                        key = K_ESC;
                }
--- 1507,1516 ----
                    // character and set did_simplify, then in the
                    // non-simplified keys use K_ESC.
                    if ((flags & FSK_SIMPLIFY) != 0)
!                   {
!                       if (did_simplify != NULL)
!                           *did_simplify = TRUE;
!                   }
                    else
                        key = K_ESC;
                }
*** ../vim-9.0.1198/src/term.c  2023-01-10 19:17:08.078354902 +0000
--- src/term.c  2023-01-14 21:03:22.958800875 +0000
***************
*** 6636,6643 ****
                }
            }
  #endif
!           slen = trans_special(&src, result + dlen, FSK_KEYCODE
!                         | ((flags & REPTERM_NO_SIMPLIFY) ? 0 : FSK_SIMPLIFY),
                                                           TRUE, did_simplify);
            if (slen > 0)
            {
--- 6639,6648 ----
                }
            }
  #endif
!           int fsk_flags = FSK_KEYCODE
!                       | ((flags & REPTERM_NO_SIMPLIFY) ? 0 : FSK_SIMPLIFY)
!                       | ((flags & REPTERM_FROM_PART) ? FSK_FROM_PART : 0);
!           slen = trans_special(&src, result + dlen, fsk_flags,
                                                           TRUE, did_simplify);
            if (slen > 0)
            {
*** ../vim-9.0.1198/src/vim.h   2023-01-12 21:07:58.640905098 +0000
--- src/vim.h   2023-01-14 21:01:50.058737276 +0000
***************
*** 2818,2823 ****
--- 2818,2824 ----
  #define FSK_KEEP_X_KEY        0x02    // don't translate xHome to Home key
  #define FSK_IN_STRING 0x04    // TRUE in string, double quote is escaped
  #define FSK_SIMPLIFY  0x08    // simplify <C-H> and <A-x>
+ #define FSK_FROM_PART 0x10    // left-hand-side of mapping
  
  // Flags for the readdirex function, how to sort the result
  #define READDIR_SORT_NONE     0  // do not sort
*** ../vim-9.0.1198/src/version.c       2023-01-14 13:12:01.858485739 +0000
--- src/version.c       2023-01-14 20:57:10.054545894 +0000
***************
*** 697,698 ****
--- 697,700 ----
  {   /* Add new patch number below this line */
+ /**/
+     1199,
  /**/

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