--- rxvt-unicode/src/screen.C	2006/01/20 10:35:25	1.245
+++ rxvt-unicode/src/screen.C	2006/01/22 20:58:33	1.248
@@ -175,8 +175,11 @@
   if (ncol == prev_ncol && nrow == prev_nrow)
     return;
 
+  if (current_screen != PRIMARY)
+    scr_swap_screen ();
+
   // we need at least two lines for wrapping to work correctly
-  if (nrow + saveLines < 2)
+  while (nrow + saveLines < 2)
     {
       //TODO//FIXME
       saveLines++;
@@ -197,7 +200,7 @@
       /*
        * first time called so just malloc everything: don't rely on realloc
        */
-      top_row = 0;       /* no saved lines */
+      top_row    = 0;
       term_start = 0;
 
       talloc = new rxvt_salloc (ncol * sizeof (text_t));
@@ -236,7 +239,7 @@
       selection.op = SELECTION_CLEAR;
       selection.screen = PRIMARY;
       selection.clicks = 0;
-      rvideo = 0;
+      rvideo_state = rvideo_mode = false;
     }
   else
     {
@@ -282,7 +285,7 @@
 
       if (top_row)
         {
-          // re-wrap lines, this is rather ugly, possibly because I am too dumb
+          // Re-wrap lines. This is rather ugly, possibly because I am too dumb
           // to come up with a lean and mean algorithm.
 
           row_col_t ocur = screen.cur;
@@ -349,11 +352,6 @@
 
                       int len = min (min (prev_ncol - pcol, ncol - qcol), llen - lofs);
 
-#if DEBUG_STRICT
-                      assert (len);
-                      assert (pline.t);
-#endif
-
                       memcpy (qline->t + qcol, pline.t + pcol, len * sizeof (text_t));
                       memcpy (qline->r + qcol, pline.r + pcol, len * sizeof (rend_t));
 
@@ -403,8 +401,7 @@
       clamp_it (screen.cur.row, 0, nrow - 1);
       clamp_it (screen.cur.col, 0, ncol - 1);
 
-      if (tabs)
-        free (tabs);
+      free (tabs);
     }
 
   CLEAR_ALL_SELECTION ();
@@ -417,6 +414,9 @@
   for (int col = ncol; col--; )
     tabs [col] = col % TABSIZE == 0;
 
+  if (current_screen != PRIMARY)
+    scr_swap_screen ();
+
   tt_winch ();
 
   HOOK_INVOKE ((this, HOOK_RESET, DT_END));
@@ -429,15 +429,18 @@
 void
 rxvt_term::scr_release () NOTHROW
 {
-  delete talloc; talloc = 0;
-  delete ralloc; ralloc = 0;
+  if (row_buf)
+    {
+      delete talloc; talloc = 0;
+      delete ralloc; ralloc = 0;
 
-  free (row_buf);
-  free (swap_buf);
-  free (drawn_buf);
-  free (tabs);
+      free (row_buf);
+      free (swap_buf);
+      free (drawn_buf);
+      free (tabs);
 
-  row_buf = 0; // signal that we freed all the arrays
+      row_buf = 0; // signal that we freed all the arrays
+    }
 }
 
 /* ------------------------------------------------------------------------- */
@@ -445,7 +448,7 @@
  * Hard reset
  */
 void
-rxvt_term::scr_poweron () NOTHROW
+rxvt_term::scr_poweron ()
 {
   scr_release ();
   prev_nrow = prev_ncol = 0;
@@ -506,50 +509,56 @@
 #endif
 }
 
+void
+rxvt_term::scr_swap_screen ()
+{
+  if (!OPTION (Opt_secondaryScreen))
+    return;
+
+  for (int i = prev_nrow; i--; )
+    ::swap (ROW(i), swap_buf [i]);
+
+  ::swap (screen.cur, swap.cur);
+
+  screen.cur.row = clamp (screen.cur.row, 0, prev_nrow - 1);
+  screen.cur.col = clamp (screen.cur.col, 0, prev_ncol - 1);
+}
+
 /* ------------------------------------------------------------------------- */
 /*
  * Swap between primary and secondary screens
  * XTERM_SEQ: Primary screen  : ESC [ ? 4 7 h
  * XTERM_SEQ: Secondary screen: ESC [ ? 4 7 l
  */
-int
-rxvt_term::scr_change_screen (int scrn) NOTHROW
+void
+rxvt_term::scr_change_screen (int scrn)
 {
+  if (scrn == current_screen)
+    return;
+
   want_refresh = 1;
   view_start = 0;
 
-  if (current_screen == scrn)
-    return scrn;
-
   selection_check (2);        /* check for boundary cross */
 
   int i = current_screen; current_screen = scrn; scrn = i;
 
-  ::swap (screen.cur.row, swap.cur.row);
-  ::swap (screen.cur.col, swap.cur.col);
-
-  screen.cur.row = clamp (screen.cur.row, 0, prev_nrow - 1);
-  screen.cur.col = clamp (screen.cur.col, 0, prev_ncol - 1);
-
 #if NSCREENS
   if (OPTION (Opt_secondaryScreen))
     {
       num_scr = 0;
 
-      for (int i = prev_nrow; i--; )
-        ::swap (ROW(i), swap_buf [i]);
+      scr_swap_screen ();
 
       ::swap (screen.charset, swap.charset);
-      ::swap (screen.flags, swap.flags);
+      ::swap (screen.flags,   swap.flags);
       screen.flags |= Screen_VisibleCursor;
-      swap.flags |= Screen_VisibleCursor;
+      swap.flags   |= Screen_VisibleCursor;
     }
   else
 #endif
     if (OPTION (Opt_secondaryScroll))
       scr_scroll_text (0, prev_nrow - 1, prev_nrow);
-
-  return scrn;
 }
 
 // clear WrapNext indicator, solidifying position on next line
@@ -751,6 +760,7 @@
   if (minlines > 0)
     {
       minlines += screen.cur.row - screen.bscroll;
+      min_it (minlines, screen.cur.row - top_row);
 
       if (minlines > 0
           && screen.tscroll == 0
@@ -1623,27 +1633,32 @@
  * XTERM_SEQ: Normal video : ESC [ ? 5 l
  */
 void
-rxvt_term::scr_rvideo_mode (int mode) NOTHROW
+rxvt_term::scr_rvideo_mode (bool on) NOTHROW
 {
-  XGCValues gcvalue;
+  rvideo_mode = on;
+
+#ifndef NO_BELL
+  on ^= rvideo_bell;
+#endif
 
-  if (rvideo != mode)
+  if (rvideo_state != on)
     {
-      rvideo = mode;
+      rvideo_state = on;
+
       ::swap (pix_colors[Color_fg], pix_colors[Color_bg]);
 #if XPM_BACKGROUND
       if (bgPixmap.pixmap == None)
 #endif
 #if TRANSPARENT
-        if (! OPTION (Opt_transparent) || am_transparent == 0)
+        if (!OPTION (Opt_transparent) || am_transparent == 0)
 #endif
-          XSetWindowBackground (display->display, vt,
-                               pix_colors[Color_bg]);
+          XSetWindowBackground (display->display, vt, pix_colors[Color_bg]);
 
+      XGCValues gcvalue;
       gcvalue.foreground = pix_colors[Color_fg];
       gcvalue.background = pix_colors[Color_bg];
-      XChangeGC (display->display, gc, GCBackground | GCForeground,
-                &gcvalue);
+      XChangeGC (display->display, gc, GCBackground | GCForeground, &gcvalue);
+
       scr_clear ();
       scr_touch (true);
     }
@@ -1853,6 +1868,15 @@
   return true;
 }
 
+#ifndef NO_BELL
+void
+rxvt_term::bell_cb (time_watcher &w)
+{
+  rvideo_bell = false;
+  scr_rvideo_mode (rvideo_mode);
+}
+#endif
+
 /* ------------------------------------------------------------------------- */
 void
 rxvt_term::scr_bell () NOTHROW
@@ -1868,10 +1892,11 @@
 
   if (OPTION (Opt_visualBell))
     {
-      scr_rvideo_mode (!rvideo); /* refresh also done */
+      rvideo_bell = true;
+      scr_rvideo_mode (rvideo_mode);
       display->flush ();
-      rxvt_usleep (VISUAL_BELL_DURATION);
-      scr_rvideo_mode (!rvideo); /* refresh also done */
+
+      bell_ev.start (NOW + VISUAL_BELL_DURATION);
     }
   else
     XBell (display->display, 0);