Patch 7.3.866
Problem:    Not serving the X selection during system() isn't nice.
Solution:   When using fork() do not loose the selection, keep serving it.
            Add a loop similar to handling I/O. (Yukihiro Nakadaira)
Files:      src/os_unix.c


*** ../vim-7.3.865/src/os_unix.c        2013-03-13 17:50:20.000000000 +0100
--- src/os_unix.c       2013-03-19 12:34:04.000000000 +0100
***************
*** 132,137 ****
--- 132,138 ----
  #  include <X11/Shell.h>
  #  include <X11/StringDefs.h>
  static Widget xterm_Shell = (Widget)0;
+ static void clip_update __ARGS((void));
  static void xterm_update __ARGS((void));
  # endif
  
***************
*** 1138,1148 ****
--- 1139,1151 ----
  
  # if defined(FEAT_CLIPBOARD) && defined(FEAT_X11)
  static void loose_clipboard __ARGS((void));
+ # ifdef USE_SYSTEM
  static void save_clipboard __ARGS((void));
  static void restore_clipboard __ARGS((void));
  
  static void *clip_star_save = NULL;
  static void *clip_plus_save = NULL;
+ # endif
  
  /*
   * Called when Vim is going to sleep or execute a shell command.
***************
*** 1164,1169 ****
--- 1167,1173 ----
      }
  }
  
+ # ifdef USE_SYSTEM
  /*
   * Save clipboard text to restore later.
   */
***************
*** 1199,1204 ****
--- 1203,1209 ----
        clip_plus_save = NULL;
      }
  }
+ # endif
  #endif
  
  /*
***************
*** 4009,4021 ****
      if (options & SHELL_COOKED)
        settmode(TMODE_COOK);           /* set to normal mode */
  
- # if defined(FEAT_CLIPBOARD) && defined(FEAT_X11)
-     /* Disown the clipboard, because is the executed command tries to obtain a
-      * selection and we own it we get a deadlock. */
-     save_clipboard();
-     loose_clipboard();
- # endif
- 
      /*
       * Do this loop twice:
       * 1: find number of arguments
--- 4014,4019 ----
***************
*** 4788,4793 ****
--- 4786,4796 ----
                    }
                    else
                        wait_pid = 0;
+ 
+ # if defined(FEAT_CLIPBOARD) && defined(FEAT_X11)
+                   /* Handle any X events, e.g. serving the clipboard. */
+                   clip_update();
+ # endif
                }
  finished:
                p_more = p_more_save;
***************
*** 4814,4819 ****
--- 4817,4861 ----
                    close(toshell_fd);
                close(fromshell_fd);
            }
+ # if defined(FEAT_CLIPBOARD) && defined(FEAT_X11)
+           else
+           {
+               /*
+                * Similar to the loop above, but only handle X events, no
+                * I/O.
+                */
+               for (;;)
+               {
+                   if (got_int)
+                   {
+                       /* CTRL-C sends a signal to the child, we ignore it
+                        * ourselves */
+ #  ifdef HAVE_SETSID
+                       kill(-pid, SIGINT);
+ #  else
+                       kill(0, SIGINT);
+ #  endif
+                       got_int = FALSE;
+                   }
+ # ifdef __NeXT__
+                   wait_pid = wait4(pid, &status, WNOHANG, (struct rusage *)0);
+ # else
+                   wait_pid = waitpid(pid, &status, WNOHANG);
+ # endif
+                   if ((wait_pid == (pid_t)-1 && errno == ECHILD)
+                           || (wait_pid == pid && WIFEXITED(status)))
+                   {
+                       wait_pid = pid;
+                       break;
+                   }
+ 
+                   /* Handle any X events, e.g. serving the clipboard. */
+                   clip_update();
+ 
+                   mch_delay(10L, TRUE);
+               }
+           }
+ # endif
  
            /*
             * Wait until our child has exited.
***************
*** 4884,4892 ****
  # ifdef FEAT_TITLE
      resettitle();
  # endif
- # if defined(FEAT_CLIPBOARD) && defined(FEAT_X11)
-     restore_clipboard();
- # endif
      vim_free(newcmd);
  
      return retval;
--- 4926,4931 ----
***************
*** 6868,6873 ****
--- 6907,6927 ----
  # endif
  
  /*
+  * Catch up with GUI or X events.
+  */
+     static void
+ clip_update()
+ {
+ # ifdef FEAT_GUI
+     if (gui.in_use)
+       gui_mch_update();
+     else
+ # endif
+     if (xterm_Shell != (Widget)0)
+       xterm_update();
+ }
+ 
+ /*
   * Catch up with any queued X events.  This may put keyboard input into the
   * input buffer, call resize call-backs, trigger timers etc.  If there is
   * nothing in the X event queue (& no timers pending), then we return
*** ../vim-7.3.865/src/version.c        2013-03-16 21:42:12.000000000 +0100
--- src/version.c       2013-03-19 12:30:16.000000000 +0100
***************
*** 730,731 ****
--- 730,733 ----
  {   /* Add new patch number below this line */
+ /**/
+     866,
  /**/

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