identifying via menu

From the newsgroup:  identifying by menu pops up multiple menus in
succession if the player picks fewer invent entries than are being
granted, but the second and subsequent ones could cover up the
message window and hide the feedback from prior ones.

If multiple popup menus are needed when identifying, issue --More--
before each menu after the first.  The code seemed to be trying to
do this already, but it should have used wait_synch() rather than
mark_synch(), or perhaps used display_nhwindow(WIN_MESSAGE, TRUE)
instead of either one of those.  For curses, both mark_synch() and
wait_synch() were no-ops.  Now they do something.  X11's behavior
wasn't right either; it seemed to be lagging one message behind
(something I had noticed recently and then forgotten about; I still
don't remember the context then so don't know whether this fixes
that earlier situation).

win/curses/cursmain.c

@@ -150,8 +150,9 @@ init_nhwindows(int* argcp, char** argv)
                 ** windows?  Or at least all but WIN_INFO?      -dean
 */
 void
-curses_init_nhwindows(int *argcp UNUSED,
-                      char **argv UNUSED)
+curses_init_nhwindows(
+    int *argcp UNUSED,
+    char **argv UNUSED)
 {
 #ifdef PDCURSES
     char window_title[BUFSZ];
@@ -745,12 +746,12 @@ curses_ctrl_nhwindow(
 
 /*
 mark_synch()    -- Don't go beyond this point in I/O on any channel until
-                   all channels are caught up to here.  Can be an empty call
-                   for the moment
+                   all channels are caught up to here.
 */
 void
 curses_mark_synch(void)
 {
+    curses_refresh_nethack_windows();
 }
 
 /*
@@ -762,6 +763,9 @@ wait_synch()    -- Wait until all pending output is complete (*flush*() for
 void
 curses_wait_synch(void)
 {
+    if (curses_got_output())
+        (void) curses_more();
+    curses_mark_synch();
     /* [do we need 'if (counting) curses_count_window((char *)0);' here?] */
 }