--- rxvt-unicode/src/rxvtlib.h.in	2006/01/08 08:49:20	1.63
+++ rxvt-unicode/src/rxvtlib.h.in	2006/01/16 06:37:52	1.66
@@ -62,7 +62,7 @@
 
 extern rxvt_t rxvt_current_term;
 
-#define SET_R(r) rxvt_current_term = (r)
+#define SET_R(r) rxvt_current_term = const_cast<rxvt_term *>(r)
 #define GET_R rxvt_current_term
 
 #define scrollbar_visible()    scrollBar.state
@@ -92,10 +92,11 @@
  *  ncol       : 1 <= ncol       <= MAX(tlen_t)
  *  nrow       : 1 <= nrow       <= MAX(int)
  *  saveLines  : 0 <= saveLines  <= MAX(int)
- *  total_rows : nrow + saveLines
- *  nsaved     : 0 <= nsaved     <= saveLines
  *  term_start : 0 <= term_start < saveLines
- *  view_start : 0 <= view_start < saveLines
+ *  total_rows : nrow + saveLines
+ *
+ *  top_row    : -saveLines <= top_row    <= 0
+ *  view_start : top_row    <= view_start <= 0
  *
  *          | most coordinates are stored relative to term_start,
  *  ROW_BUF | which is the first line of the terminal screen
@@ -103,9 +104,9 @@
  *  |························= row_buf[1]
  *  |························= row_buf[2] etc.
  *  |
- *  +------------+···········= term_start - nsaved
+ *  +------------+···········= term_start + top_row
  *  | scrollback |                                      
- *  | scrollback +---------+·= term_start - view_start
+ *  | scrollback +---------+·= term_start + view_start
  *  | scrollback | display |
  *  | scrollback | display |
  *  +------------+·display·+·= term_start
@@ -134,9 +135,9 @@
   int            lineSpace;     /* number of extra pixels between rows      */
   int            saveLines;     /* number of lines that fit in scrollback   */
   int            total_rows;    /* total number of rows in this terminal    */
-  int            nsaved;        /* number of rows saved to scrollback       */
   int            term_start;    /* term lines start here                    */
   int            view_start;    /* scrollback view starts here              */
+  int            top_row;       /* topmost row index of scrollback          */
   Window         parent[6];     /* parent identifiers - we're parent[0]     */
   Window         vt;            /* vt100 window                             */
   GC             gc;            /* GC for drawing                           */
@@ -256,9 +257,8 @@
   int             sb_shadow;    /* scrollbar shadow width                    */
   rxvt_ptytty     pty;
   int             numlock_state;
-  line_t         *row_buf;      // all lines, scrollback + terminal, circular
+  line_t         *row_buf;      // all lines, scrollback + terminal, circular, followed by temp_buf
   line_t         *drawn_buf;    // text on screen
-  line_t         *temp_buf;     // temporary buffer
   line_t         *swap_buf;     // lines for swap buffer
   char           *tabs;         /* per location: 1 == tab-stop               */
   screen_t        screen;