attempt at fixing a problem tracked down by Jim Uhl, where nano will go

into an infinite loop if the terminal it's running in dies unexpectedly
due to a signal


git-svn-id: svn://svn.savannah.gnu.org/nano/trunk/nano@2339 35c25a1d-7b9e-4130-9fde-d3aeb78583b8

ChangeLog

@@ -233,6 +233,11 @@ CVS code -
   revstrstr(), revstristr()
 	- Add asserts. (DLR)
 - winio.c:
+  get_buffer()
+	- If we get ERR when using blocking input, it means that the
+	  input source that we were using is gone.  In this case, call
+	  handle_hupterm(), so that nano dies gracefully instead of
+	  going into an infinite loop. (DLR, found by Jim Uhl)
   titlebar()
 	- Rename some variables for consistency, make space an int
 	  instead of a size_t, properly handle the case where the prefix

src/winio.c

@@ -140,6 +140,11 @@ void get_buffer(WINDOW *win)
 
     input = wgetch(win);
 
+    /* If we get ERR when using blocking input, it means that the input
+     * source that we were using is gone, so die gracefully. */
+    if (input == ERR)
+	handle_hupterm(0);
+
 #ifndef NANO_SMALL
     allow_pending_sigwinch(FALSE);
 #endif