Patch 8.1.0796
Problem:    MS-Windows 7: problem with named pipe on channel.
Solution:   Put back the disconnect/connect calls. (Yasuhiro Matsumoto,
            closes #3833)
Files:      src/channel.c, src/testdir/test_terminal.vim


*** ../vim-8.1.0795/src/channel.c       2019-01-20 15:30:36.881328770 +0100
--- src/channel.c       2019-01-22 22:44:08.765530220 +0100
***************
*** 3181,3187 ****
  
            if (r && nread > 0)
                return CW_READY;
!           if (r == 0)
                return CW_ERROR;
  
            /* perhaps write some buffer lines */
--- 3181,3193 ----
  
            if (r && nread > 0)
                return CW_READY;
! 
!           if (channel->ch_named_pipe)
!           {
!               DisconnectNamedPipe((HANDLE)fd);
!               ConnectNamedPipe((HANDLE)fd, NULL);
!           }
!           else if (r == 0)
                return CW_ERROR;
  
            /* perhaps write some buffer lines */
***************
*** 3813,3819 ****
--- 3819,3834 ----
        if (part == PART_SOCK)
            res = sock_write(fd, (char *)buf, len);
        else
+       {
            res = fd_write(fd, (char *)buf, len);
+ #ifdef WIN32
+           if (channel->ch_named_pipe && res < 0)
+           {
+               DisconnectNamedPipe((HANDLE)fd);
+               ConnectNamedPipe((HANDLE)fd, NULL);
+           }
+ #endif
+       }
        if (res < 0 && (errno == EWOULDBLOCK
  #ifdef EAGAIN
                        || errno == EAGAIN
*** ../vim-8.1.0795/src/testdir/test_terminal.vim       2019-01-20 
18:25:50.313911236 +0100
--- src/testdir/test_terminal.vim       2019-01-22 22:46:17.424241336 +0100
***************
*** 644,651 ****
  
  func Test_terminal_no_cmd()
    " Does not work on Mac.
!   " Todo: make this work on Win32 again
!   if has('mac') || has('win32')
      return
    endif
    let buf = term_start('NONE', {})
--- 644,650 ----
  
  func Test_terminal_no_cmd()
    " Does not work on Mac.
!   if has('mac')
      return
    endif
    let buf = term_start('NONE', {})
*** ../vim-8.1.0795/src/version.c       2019-01-22 22:54:56.215326924 +0100
--- src/version.c       2019-01-22 23:00:59.380030846 +0100
***************
*** 793,794 ****
--- 793,796 ----
  {   /* Add new patch number below this line */
+ /**/
+     796,
  /**/

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