Patch 8.2.2919
Problem:    Using ":!command" does not work if the command uses posix_spawn().
Solution:   Do not call ioctl() with TIOCSCTTY. (Felipe Contreras)
Files:      src/os_unix.c


*** ../vim-8.2.2918/src/os_unix.c       2021-03-27 12:11:29.914607383 +0100
--- src/os_unix.c       2021-06-01 20:48:08.803478739 +0200
***************
*** 4775,4785 ****
                    // push stream discipline modules
                    if (options & SHELL_COOKED)
                        setup_slavepty(pty_slave_fd);
- #  ifdef TIOCSCTTY
-                   // Try to become controlling tty (probably doesn't work,
-                   // unless run by root)
-                   ioctl(pty_slave_fd, TIOCSCTTY, (char *)NULL);
- #  endif
                }
  # endif
                set_default_child_environment(FALSE);
--- 4775,4780 ----
*** ../vim-8.2.2918/src/version.c       2021-05-31 22:15:22.130559993 +0200
--- src/version.c       2021-06-01 20:47:01.423671524 +0200
***************
*** 752,753 ****
--- 752,755 ----
  {   /* Add new patch number below this line */
+ /**/
+     2919,
  /**/

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