Put prototypes for the functions exported by wcwidth.c in putty.h, and remove
[u/mdw/putty] / terminal.c
index d57218a..3fcff47 100644 (file)
@@ -62,17 +62,22 @@ const wchar_t sel_nl[] = SEL_NL;
 /*
  * Internal prototypes.
  */
+static unsigned long *resizeline(unsigned long *, int);
+static unsigned long *lineptr(Terminal *, int, int);
 static void do_paint(Terminal *, Context, int);
 static void erase_lots(Terminal *, int, int, int);
 static void swap_screen(Terminal *, int, int, int);
 static void update_sbar(Terminal *);
 static void deselect(Terminal *);
 static void term_print_finish(Terminal *);
+#ifdef OPTIMISE_SCROLL
+static void scroll_display(Terminal *, int, int, int);
+#endif /* OPTIMISE_SCROLL */
 
 /*
  * Resize a line to make it `cols' columns wide.
  */
-unsigned long *resizeline(unsigned long *line, int cols)
+static unsigned long *resizeline(unsigned long *line, int cols)
 {
     int i, oldlen;
     unsigned long lineattrs;
@@ -99,7 +104,7 @@ unsigned long *resizeline(unsigned long *line, int cols)
  * whether the y coordinate is non-negative or negative
  * (respectively).
  */
-unsigned long *lineptr(Terminal *term, int y, int lineno)
+static unsigned long *lineptr(Terminal *term, int y, int lineno)
 {
     unsigned long *line, *newline;
     tree234 *whichtree;
@@ -147,10 +152,10 @@ static void power_on(Terminal *term)
        for (i = 0; i < term->cols; i++)
            term->tabs[i] = (i % 8 == 0 ? TRUE : FALSE);
     }
-    term->alt_om = term->dec_om = cfg.dec_om;
+    term->alt_om = term->dec_om = term->cfg->dec_om;
     term->alt_ins = term->insert = FALSE;
     term->alt_wnext = term->wrapnext = term->save_wnext = FALSE;
-    term->alt_wrap = term->wrap = cfg.wrap_mode;
+    term->alt_wrap = term->wrap = term->cfg->wrap_mode;
     term->alt_cset = term->cset = term->save_cset = 0;
     term->alt_utf = term->utf = term->save_utf = 0;
     term->utf_state = 0;
@@ -162,17 +167,17 @@ static void power_on(Terminal *term)
     term->big_cursor = 0;
     term->save_attr = term->curr_attr = ATTR_DEFAULT;
     term->term_editing = term->term_echoing = FALSE;
-    term->app_cursor_keys = cfg.app_cursor;
-    term->app_keypad_keys = cfg.app_keypad;
-    term->use_bce = cfg.bce;
-    term->blink_is_real = cfg.blinktext;
+    term->app_cursor_keys = term->cfg->app_cursor;
+    term->app_keypad_keys = term->cfg->app_keypad;
+    term->use_bce = term->cfg->bce;
+    term->blink_is_real = term->cfg->blinktext;
     term->erase_char = ERASE_CHAR;
     term->alt_which = 0;
     term_print_finish(term);
     {
        int i;
        for (i = 0; i < 256; i++)
-           term->wordness[i] = cfg.wordness[i];
+           term->wordness[i] = term->cfg->wordness[i];
     }
     if (term->screen) {
        swap_screen(term, 1, FALSE, FALSE);
@@ -191,7 +196,7 @@ void term_update(Terminal *term)
     ctx = get_ctx(term->frontend);
     if (ctx) {
        int need_sbar_update = term->seen_disp_event;
-       if (term->seen_disp_event && cfg.scroll_on_disp) {
+       if (term->seen_disp_event && term->cfg->scroll_on_disp) {
            term->disptop = 0;         /* return to main screen */
            term->seen_disp_event = 0;
            need_sbar_update = TRUE;
@@ -229,7 +234,7 @@ void term_seen_key_event(Terminal *term)
     /*
      * Reset the scrollback on keypress, if we're doing that.
      */
-    if (cfg.scroll_on_key) {
+    if (term->cfg->scroll_on_key) {
        term->disptop = 0;             /* return to main screen */
        term->seen_disp_event = 1;
     }
@@ -257,18 +262,18 @@ void term_pwron(Terminal *term)
  */
 void term_reconfig(Terminal *term)
 {
-    if (cfg.no_alt_screen)
+    if (term->cfg->no_alt_screen)
        swap_screen(term, 0, FALSE, FALSE);
-    if (cfg.no_mouse_rep) {
+    if (term->cfg->no_mouse_rep) {
        term->xterm_mouse = 0;
        set_raw_mouse_mode(term->frontend, 0);
     }
-    if (cfg.no_remote_charset) {
+    if (term->cfg->no_remote_charset) {
        term->cset_attr[0] = term->cset_attr[1] = ATTR_ASCII;
        term->sco_acs = term->alt_sco_acs = 0;
        term->utf = 0;
     }
-    if (!*cfg.printer) {
+    if (!*term->cfg->printer) {
        term_print_finish(term);
     }
 }
@@ -289,7 +294,7 @@ void term_clrsb(Terminal *term)
 /*
  * Initialise the terminal.
  */
-Terminal *term_init(void *frontend)
+Terminal *term_init(Config *mycfg, void *frontend)
 {
     Terminal *term;
 
@@ -299,6 +304,7 @@ Terminal *term_init(void *frontend)
      */
     term = smalloc(sizeof(Terminal));
     term->frontend = frontend;
+    term->cfg = mycfg;
     term->logctx = NULL;
     term->compatibility_level = TM_PUTTY;
     strcpy(term->id_string, "\033[?6c");
@@ -332,6 +338,7 @@ Terminal *term_init(void *frontend)
     term->nbeeps = 0;
     term->lastbeep = FALSE;
     term->beep_overloaded = FALSE;
+    term->attr_mask = 0xffffffff;
     term->resize_fn = NULL;
     term->resize_ctx = NULL;
 
@@ -588,11 +595,13 @@ static void check_selection(Terminal *term, pos from, pos to)
 static void scroll(Terminal *term, int topline, int botline, int lines, int sb)
 {
     unsigned long *line, *line2;
-    int i, seltop;
+    int i, seltop, olddisptop, shift;
 
     if (topline != 0 || term->alt_which != 0)
        sb = FALSE;
 
+    olddisptop = term->disptop;
+    shift = lines;
     if (lines < 0) {
        while (lines < 0) {
            line = delpos234(term->screen, botline);
@@ -701,8 +710,44 @@ static void scroll(Terminal *term, int topline, int botline, int lines, int sb)
            lines--;
        }
     }
+#ifdef OPTIMISE_SCROLL
+    shift += term->disptop - olddisptop;
+    if (shift < term->rows && shift > -term->rows && shift != 0)
+       scroll_display(term, topline, botline, shift);
+#endif /* OPTIMISE_SCROLL */
 }
 
+#ifdef OPTIMISE_SCROLL
+/*
+ * Scroll the physical display, and our conception of it in disptext.
+ */
+static void scroll_display(Terminal *term, int topline, int botline, int lines)
+{
+    unsigned long *start, *end;
+    int distance, size, i;
+
+    start = term->disptext + topline * (term->cols + 1);
+    end = term->disptext + (botline + 1) * (term->cols + 1);
+    distance = (lines > 0 ? lines : -lines) * (term->cols + 1);
+    size = end - start - distance;
+    if (lines > 0) {
+       memmove(start, start + distance, size * TSIZE);
+       if (term->dispcurs >= start + distance &&
+           term->dispcurs <= start + distance + size)
+           term->dispcurs -= distance;
+       for (i = 0; i < distance; i++)
+           (start + size)[i] |= ATTR_INVALID;
+    } else {
+       memmove(start + distance, start, size * TSIZE);
+       if (term->dispcurs >= start && term->dispcurs <= start + size)
+           term->dispcurs += distance;
+       for (i = 0; i < distance; i++)
+           start[i] |= ATTR_INVALID;
+    }
+    do_scroll(term->frontend, topline, botline, lines);
+}
+#endif /* OPTIMISE_SCROLL */
+
 /*
  * Move the cursor to a given position, clipping at boundaries. We
  * may or may not want to clip at the scroll margin: marg_clip is 0
@@ -871,12 +916,12 @@ static void toggle_mode(Terminal *term, int mode, int query, int state)
                term->blink_is_real = FALSE;
                term->vt52_bold = FALSE;
            } else {
-               term->blink_is_real = cfg.blinktext;
+               term->blink_is_real = term->cfg->blinktext;
            }
            break;
          case 3:                      /* 80/132 columns */
            deselect(term);
-           if (!cfg.no_remote_resize)
+           if (!term->cfg->no_remote_resize)
                request_resize(term->frontend, state ? 132 : 80, term->rows);
            term->reset_132 = state;
            break;
@@ -931,7 +976,7 @@ static void toggle_mode(Terminal *term, int mode, int query, int state)
          case 47:                     /* alternate screen */
            compatibility(OTHER);
            deselect(term);
-           swap_screen(term, cfg.no_alt_screen ? 0 : state, FALSE, FALSE);
+           swap_screen(term, term->cfg->no_alt_screen ? 0 : state, FALSE, FALSE);
            term->disptop = 0;
            break;
          case 1000:                   /* xterm mouse 1 */
@@ -945,7 +990,7 @@ static void toggle_mode(Terminal *term, int mode, int query, int state)
          case 1047:                   /* alternate screen */
            compatibility(OTHER);
            deselect(term);
-           swap_screen(term, cfg.no_alt_screen ? 0 : state, TRUE, TRUE);
+           swap_screen(term, term->cfg->no_alt_screen ? 0 : state, TRUE, TRUE);
            term->disptop = 0;
            break;
          case 1048:                   /* save/restore cursor */
@@ -958,7 +1003,7 @@ static void toggle_mode(Terminal *term, int mode, int query, int state)
            if (!state) term->seen_disp_event = TRUE;
            compatibility(OTHER);
            deselect(term);
-           swap_screen(term, cfg.no_alt_screen ? 0 : state, TRUE, FALSE);
+           swap_screen(term, term->cfg->no_alt_screen ? 0 : state, TRUE, FALSE);
            if (!state)
                save_cursor(term, state);
            term->disptop = 0;
@@ -997,14 +1042,14 @@ static void do_osc(Terminal *term)
        switch (term->esc_args[0]) {
          case 0:
          case 1:
-           if (!cfg.no_remote_wintitle)
+           if (!term->cfg->no_remote_wintitle)
                set_icon(term->frontend, term->osc_string);
            if (term->esc_args[0] == 1)
                break;
            /* fall through: parameter 0 means set both */
          case 2:
          case 21:
-           if (!cfg.no_remote_wintitle)
+           if (!term->cfg->no_remote_wintitle)
                set_title(term->frontend, term->osc_string);
            break;
        }
@@ -1017,7 +1062,7 @@ static void do_osc(Terminal *term)
 static void term_print_setup(Terminal *term)
 {
     bufchain_clear(&term->printer_buf);
-    term->print_job = printer_start_job(cfg.printer);
+    term->print_job = printer_start_job(term->cfg->printer);
 }
 static void term_print_flush(Terminal *term)
 {
@@ -1091,7 +1136,7 @@ void term_out(Terminal *term)
             * Optionally log the session traffic to a file. Useful for
             * debugging and possibly also useful for actual logging.
             */
-           if (cfg.logtype == LGTYP_DEBUG && term->logctx)
+           if (term->cfg->logtype == LGTYP_DEBUG && term->logctx)
                logtraffic(term->logctx, (unsigned char) c, LGTYP_DEBUG);
        } else {
            c = unget;
@@ -1227,7 +1272,7 @@ void term_out(Terminal *term)
            }
            /* Are we in the nasty ACS mode? Note: no sco in utf mode. */
            else if(term->sco_acs && 
-                   (c!='\033' && c!='\n' && c!='\r' && c!='\b'))
+                   (c!='\033' && c!='\012' && c!='\015' && c!='\b'))
            {
               if (term->sco_acs == 2) c ^= 0x80;
               c |= ATTR_SCOACS;
@@ -1279,7 +1324,7 @@ void term_out(Terminal *term)
                term->curs.x--;
            term->wrapnext = FALSE;
            fix_cpos;
-           if (!cfg.no_dbackspace)    /* destructive bksp might be disabled */
+           if (!term->cfg->no_dbackspace)    /* destructive bksp might be disabled */
                *term->cpos = (' ' | term->curr_attr | ATTR_ASCII);
        } else
            /* Or normal C0 controls. */
@@ -1298,7 +1343,7 @@ void term_out(Terminal *term)
                if (term->ldisc) {
                    char abuf[256], *s, *d;
                    int state = 0;
-                   for (s = cfg.answerback, d = abuf; *s; s++) {
+                   for (s = term->cfg->answerback, d = abuf; *s; s++) {
                        if (state) {
                            if (*s >= 'a' && *s <= 'z')
                                *d++ = (*s - ('a' - 1));
@@ -1341,7 +1386,7 @@ void term_out(Terminal *term)
                     * t seconds ago.
                     */
                    while (term->beephead &&
-                          term->beephead->ticks < ticks - cfg.bellovl_t) {
+                          term->beephead->ticks < ticks - term->cfg->bellovl_t) {
                        struct beeptime *tmp = term->beephead;
                        term->beephead = tmp->next;
                        sfree(tmp);
@@ -1350,16 +1395,16 @@ void term_out(Terminal *term)
                        term->nbeeps--;
                    }
 
-                   if (cfg.bellovl && term->beep_overloaded &&
-                       ticks - term->lastbeep >= (unsigned)cfg.bellovl_s) {
+                   if (term->cfg->bellovl && term->beep_overloaded &&
+                       ticks - term->lastbeep >= (unsigned)term->cfg->bellovl_s) {
                        /*
                         * If we're currently overloaded and the
                         * last beep was more than s seconds ago,
                         * leave overload mode.
                         */
                        term->beep_overloaded = FALSE;
-                   } else if (cfg.bellovl && !term->beep_overloaded &&
-                              term->nbeeps >= cfg.bellovl_n) {
+                   } else if (term->cfg->bellovl && !term->beep_overloaded &&
+                              term->nbeeps >= term->cfg->bellovl_n) {
                        /*
                         * Now, if we have n or more beeps
                         * remaining in the queue, go into overload
@@ -1372,9 +1417,9 @@ void term_out(Terminal *term)
                    /*
                     * Perform an actual beep if we're not overloaded.
                     */
-                   if (!cfg.bellovl || !term->beep_overloaded) {
-                       beep(term->frontend, cfg.beep);
-                       if (cfg.beep == BELL_VISUAL) {
+                   if (!term->cfg->bellovl || !term->beep_overloaded) {
+                       beep(term->frontend, term->cfg->beep);
+                       if (term->cfg->beep == BELL_VISUAL) {
                            term->in_vbell = TRUE;
                            term->vbell_startpoint = ticks;
                            term_update(term);
@@ -1413,7 +1458,7 @@ void term_out(Terminal *term)
                    term->esc_query = FALSE;
                }
                break;
-             case '\r':
+             case '\015':
                term->curs.x = 0;
                term->wrapnext = FALSE;
                fix_cpos;
@@ -1433,12 +1478,12 @@ void term_out(Terminal *term)
                }
              case '\013':
                compatibility(VT100);
-             case '\n':
+             case '\012':
                if (term->curs.y == term->marg_b)
                    scroll(term, term->marg_t, term->marg_b, 1, TRUE);
                else if (term->curs.y < term->rows - 1)
                    term->curs.y++;
-               if (cfg.lfhascr)
+               if (term->cfg->lfhascr)
                    term->curs.x = 0;
                fix_cpos;
                term->wrapnext = FALSE;
@@ -1497,7 +1542,6 @@ void term_out(Terminal *term)
                    term->logctx)
                    logtraffic(term->logctx, (unsigned char) c, LGTYP_ASCII);
                {
-                   extern int wcwidth(wchar_t ucs);
                    int width = 0;
                    if (DIRECT_CHAR(c))
                        width = 1;
@@ -1638,7 +1682,7 @@ void term_out(Terminal *term)
                    if (term->ldisc)   /* cause ldisc to notice changes */
                        ldisc_send(term->ldisc, NULL, 0, 0);
                    if (term->reset_132) {
-                       if (!cfg.no_remote_resize)
+                       if (!term->cfg->no_remote_resize)
                            request_resize(term->frontend, 80, term->rows);
                        term->reset_132 = 0;
                    }
@@ -1703,55 +1747,55 @@ void term_out(Terminal *term)
 
                  case ANSI('A', '('):
                    compatibility(VT100);
-                   if (!cfg.no_remote_charset)
+                   if (!term->cfg->no_remote_charset)
                        term->cset_attr[0] = ATTR_GBCHR;
                    break;
                  case ANSI('B', '('):
                    compatibility(VT100);
-                   if (!cfg.no_remote_charset)
+                   if (!term->cfg->no_remote_charset)
                        term->cset_attr[0] = ATTR_ASCII;
                    break;
                  case ANSI('0', '('):
                    compatibility(VT100);
-                   if (!cfg.no_remote_charset)
+                   if (!term->cfg->no_remote_charset)
                        term->cset_attr[0] = ATTR_LINEDRW;
                    break;
                  case ANSI('U', '('): 
                    compatibility(OTHER);
-                   if (!cfg.no_remote_charset)
+                   if (!term->cfg->no_remote_charset)
                        term->cset_attr[0] = ATTR_SCOACS; 
                    break;
 
                  case ANSI('A', ')'):
                    compatibility(VT100);
-                   if (!cfg.no_remote_charset)
+                   if (!term->cfg->no_remote_charset)
                        term->cset_attr[1] = ATTR_GBCHR;
                    break;
                  case ANSI('B', ')'):
                    compatibility(VT100);
-                   if (!cfg.no_remote_charset)
+                   if (!term->cfg->no_remote_charset)
                        term->cset_attr[1] = ATTR_ASCII;
                    break;
                  case ANSI('0', ')'):
                    compatibility(VT100);
-                   if (!cfg.no_remote_charset)
+                   if (!term->cfg->no_remote_charset)
                        term->cset_attr[1] = ATTR_LINEDRW;
                    break;
                  case ANSI('U', ')'): 
                    compatibility(OTHER);
-                   if (!cfg.no_remote_charset)
+                   if (!term->cfg->no_remote_charset)
                        term->cset_attr[1] = ATTR_SCOACS; 
                    break;
 
                  case ANSI('8', '%'):  /* Old Linux code */
                  case ANSI('G', '%'):
                    compatibility(OTHER);
-                   if (!cfg.no_remote_charset)
+                   if (!term->cfg->no_remote_charset)
                        term->utf = 1;
                    break;
                  case ANSI('@', '%'):
                    compatibility(OTHER);
-                   if (!cfg.no_remote_charset)
+                   if (!term->cfg->no_remote_charset)
                        term->utf = 0;
                    break;
                }
@@ -1931,7 +1975,7 @@ void term_out(Terminal *term)
                        compatibility(VT100);
                        {
                            if (term->esc_nargs != 1) break;
-                           if (term->esc_args[0] == 5 && *cfg.printer) {
+                           if (term->esc_args[0] == 5 && *term->cfg->printer) {
                                term->printing = TRUE;
                                term->only_printing = !term->esc_query;
                                term->print_state = 0;
@@ -2053,15 +2097,15 @@ void term_out(Terminal *term)
                                    break;
                                  case 10:      /* SCO acs off */
                                    compatibility(SCOANSI);
-                                   if (cfg.no_remote_charset) break;
+                                   if (term->cfg->no_remote_charset) break;
                                    term->sco_acs = 0; break;
                                  case 11:      /* SCO acs on */
                                    compatibility(SCOANSI);
-                                   if (cfg.no_remote_charset) break;
+                                   if (term->cfg->no_remote_charset) break;
                                    term->sco_acs = 1; break;
                                  case 12:      /* SCO acs on flipped */
                                    compatibility(SCOANSI);
-                                   if (cfg.no_remote_charset) break;
+                                   if (term->cfg->no_remote_charset) break;
                                    term->sco_acs = 2; break;
                                  case 22:      /* disable bold */
                                    compatibility2(OTHER, VT220);
@@ -2140,7 +2184,7 @@ void term_out(Terminal *term)
                            && (term->esc_args[0] < 1 ||
                                term->esc_args[0] >= 24)) {
                            compatibility(VT340TEXT);
-                           if (!cfg.no_remote_resize)
+                           if (!term->cfg->no_remote_resize)
                                request_resize(term->frontend, term->cols,
                                               def(term->esc_args[0], 24));
                            deselect(term);
@@ -2160,7 +2204,7 @@ void term_out(Terminal *term)
                                break;
                              case 3:
                                if (term->esc_nargs >= 3) {
-                                   if (!cfg.no_remote_resize)
+                                   if (!term->cfg->no_remote_resize)
                                        move_window(term->frontend,
                                                    def(term->esc_args[1], 0),
                                                    def(term->esc_args[2], 0));
@@ -2185,10 +2229,10 @@ void term_out(Terminal *term)
                                break;
                              case 8:
                                if (term->esc_nargs >= 3) {
-                                   if (!cfg.no_remote_resize)
+                                   if (!term->cfg->no_remote_resize)
                                        request_resize(term->frontend,
-                                                      def(term->esc_args[2], cfg.width),
-                                                      def(term->esc_args[1], cfg.height));
+                                                      def(term->esc_args[2], term->cfg->width),
+                                                      def(term->esc_args[1], term->cfg->height));
                                }
                                break;
                              case 9:
@@ -2286,10 +2330,10 @@ void term_out(Terminal *term)
                         */
                        compatibility(VT420);
                        if (term->esc_nargs == 1 && term->esc_args[0] > 0) {
-                           if (!cfg.no_remote_resize)
+                           if (!term->cfg->no_remote_resize)
                                request_resize(term->frontend, term->cols,
                                               def(term->esc_args[0],
-                                                  cfg.height));
+                                                  term->cfg->height));
                            deselect(term);
                        }
                        break;
@@ -2300,10 +2344,10 @@ void term_out(Terminal *term)
                         */
                        compatibility(VT340TEXT);
                        if (term->esc_nargs <= 1) {
-                           if (!cfg.no_remote_resize)
+                           if (!term->cfg->no_remote_resize)
                                request_resize(term->frontend,
                                               def(term->esc_args[0],
-                                                  cfg.width), term->rows);
+                                                  term->cfg->width), term->rows);
                            deselect(term);
                        }
                        break;
@@ -2435,7 +2479,7 @@ void term_out(Terminal *term)
                         * Well we should do a soft reset at this point ...
                         */
                        if (!has_compat(VT420) && has_compat(VT100)) {
-                           if (!cfg.no_remote_resize) {
+                           if (!term->cfg->no_remote_resize) {
                                if (term->reset_132)
                                    request_resize(132, 24);
                                else
@@ -2500,7 +2544,7 @@ void term_out(Terminal *term)
                 *
                 * -- RDB
                 */
-               if (c == '\n' || c == '\r') {
+               if (c == '\012' || c == '\015') {
                    term->termstate = TOPLEVEL;
                } else if (c == 0234 || c == '\007') {
                    /*
@@ -2671,7 +2715,7 @@ void term_out(Terminal *term)
                     *     emulation.
                     */
                    term->vt52_mode = FALSE;
-                   term->blink_is_real = cfg.blinktext;
+                   term->blink_is_real = term->cfg->blinktext;
                    break;
 #if 0
                  case '^':
@@ -2884,7 +2928,7 @@ static void do_paint(Terminal *term, Context ctx, int may_optimise)
     /* Has the cursor position or type changed ? */
     if (term->cursor_on) {
        if (term->has_focus) {
-           if (term->blinker || !cfg.blink_cur)
+           if (term->blinker || !term->cfg->blink_cur)
                cursor = TATTR_ACTCURS;
            else
                cursor = 0;
@@ -2997,7 +3041,8 @@ static void do_paint(Terminal *term, Context ctx, int may_optimise)
            if ((term->disptext[idx] ^ tattr) & ATTR_WIDE)
                dirty_line = TRUE;
 
-           break_run = (tattr != attr || j - start >= sizeof(ch));
+           break_run = (((tattr ^ attr) & term->attr_mask) ||
+               j - start >= sizeof(ch));
 
            /* Special hack for VT100 Linedraw glyphs */
            if ((attr & CSET_MASK) == 0x2300 && tchar >= 0xBA
@@ -3143,6 +3188,10 @@ void term_paint(Terminal *term, Context ctx,
 void term_scroll(Terminal *term, int rel, int where)
 {
     int sbtop = -count234(term->scrollback);
+#ifdef OPTIMISE_SCROLL
+    int olddisptop = term->disptop;
+    int shift;
+#endif /* OPTIMISE_SCROLL */
 
     term->disptop = (rel < 0 ? 0 : rel > 0 ? sbtop : term->disptop) + where;
     if (term->disptop < sbtop)
@@ -3150,6 +3199,11 @@ void term_scroll(Terminal *term, int rel, int where)
     if (term->disptop > 0)
        term->disptop = 0;
     update_sbar(term);
+#ifdef OPTIMISE_SCROLL
+    shift = (term->disptop - olddisptop);
+    if (shift < term->rows && shift > -term->rows)
+       scroll_display(term, 0, term->rows - 1, shift);
+#endif /* OPTIMISE_SCROLL */
     term_update(term);
 }
 
@@ -3224,7 +3278,7 @@ static void clipme(Terminal *term, pos top, pos bottom, int rect)
 
            switch (uc & CSET_MASK) {
              case ATTR_LINEDRW:
-               if (!cfg.rawcnp) {
+               if (!term->cfg->rawcnp) {
                    uc = unitab_xterm[uc & 0xFF];
                    break;
                }
@@ -3256,7 +3310,7 @@ static void clipme(Terminal *term, pos top, pos bottom, int rect)
                    int rv;
                    if (is_dbcs_leadbyte(font_codepage, (BYTE) c)) {
                        buf[0] = c;
-                       buf[1] = ldata[top.x + 1];
+                       buf[1] = (char) (0xFF & ldata[top.x + 1]);
                        rv = mb_to_wc(font_codepage, 0, buf, 2, wbuf, 4);
                        top.x++;
                    } else {
@@ -3555,7 +3609,7 @@ void term_do_paste(Terminal *term)
 
             if (p <= data + len - sel_nl_sz &&
                 !memcmp(p, sel_nl, sizeof(sel_nl))) {
-                term->paste_buffer[term->paste_len++] = '\r';
+                term->paste_buffer[term->paste_len++] = '\015';
                 p += sel_nl_sz;
             }
             q = p;
@@ -3580,8 +3634,8 @@ void term_mouse(Terminal *term, Mouse_Button b, Mouse_Action a, int x, int y,
     pos selpoint;
     unsigned long *ldata;
     int raw_mouse = (term->xterm_mouse &&
-                    !cfg.no_mouse_rep &&
-                    !(cfg.mouse_override && shift));
+                    !term->cfg->no_mouse_rep &&
+                    !(term->cfg->mouse_override && shift));
     int default_seltype;
 
     if (y < 0) {
@@ -3670,7 +3724,7 @@ void term_mouse(Terminal *term, Mouse_Button b, Mouse_Action a, int x, int y,
      * Set the selection type (rectangular or normal) at the start
      * of a selection attempt, from the state of Alt.
      */
-    if (!alt ^ !cfg.rect_select)
+    if (!alt ^ !term->cfg->rect_select)
        default_seltype = RECTANGULAR;
     else
        default_seltype = LEXICOGRAPHIC;
@@ -3814,7 +3868,7 @@ void term_paste(Terminal *term)
     while (term->paste_pos < term->paste_len) {
        int n = 0;
        while (n + term->paste_pos < term->paste_len) {
-           if (term->paste_buffer[term->paste_pos + n++] == '\r')
+           if (term->paste_buffer[term->paste_pos + n++] == '\015')
                break;
        }
        if (term->ldisc)