(XTread_socket): Do not assume that select returning

immediately with no events implies a hangup.

diff --git a/src/xterm.c b/src/xterm.c
index e9d57fac40d4a11d0865dbd5a6399e2bba6fc19f..673f6ff62302d9ddfc0d59e98979635c15cf6cf2 100644 (file)
--- a/src/xterm.c
+++ b/src/xterm.c
@@ -3628,10 +3628,15 @@ XTread_socket (sd, bufp, numchars, waitp, expected)
 #ifdef X_IO_BUG
   if (! event_found)
     /* On some systems, an X bug causes Emacs to get no more events
-       when the window is destroyed.  Detect that.  */
+       when the window is destroyed.  Detect that.  (1994.)  */
     XNoOp (x_current_display);
 #endif /* X_IO_BUG */
 
+#if 0 /* This fails for serial-line connections to the X server, 
+        because the characters arrive one by one, and a partial
+        command makes select return but gives nothing to read.
+        We'll have to hope that the bug that this tried to fix
+        in 1988 has been fixed in Xlib or the X server.  */
 #ifdef HAVE_SELECT
   if (expected && ! event_found)
     {
@@ -3652,6 +3657,7 @@ XTread_socket (sd, bufp, numchars, waitp, expected)
        kill (getpid (), SIGHUP);
     }
 #endif /* HAVE_SELECT */
+#endif /* 0 */
 
 #ifndef HAVE_X11
   if (updating_frame == 0)