Obviously didn't mean to remove those..

terminal.h

@@ -276,6 +276,51 @@ struct terminal_tag {
     struct bidi_cache_entry *pre_bidi_cache, *post_bidi_cache;
     int bidi_cache_size;
 
+    /*
+     * We copy a bunch of stuff out of the Conf structure into local
+     * fields in the Terminal structure, to avoid the repeated
+     * tree234 lookups which would be involved in fetching them from
+     * the former every time.
+     */
+    int ansi_colour;
+    char *answerback;
+    int answerbacklen;
+    int arabicshaping;
+    int beep;
+    int bellovl;
+    int bellovl_n;
+    int bellovl_s;
+    int bellovl_t;
+    int bidi;
+    int bksp_is_delete;
+    int blink_cur;
+    int blinktext;
+    int cjk_ambig_wide;
+    int conf_height;
+    int conf_width;
+    int crhaslf;
+    int erase_to_scrollback;
+    int funky_type;
+    int lfhascr;
+    int logflush;
+    int logtype;
+    int mouse_override;
+    int nethack_keypad;
+    int no_alt_screen;
+    int no_applic_c;
+    int no_applic_k;
+    int no_dbackspace;
+    int no_mouse_rep;
+    int no_remote_charset;
+    int no_remote_resize;
+    int no_remote_wintitle;
+    int rawcnp;
+    int rect_select;
+    int remote_qtitle_action;
+    int rxvt_homeend;
+    int scroll_on_disp;
+    int scroll_on_key;
+    int xterm_256_colour;
     int url_update;
 };