--- a/xrogue/command.c	Fri Feb 19 21:02:28 2016 -0500
+++ b/xrogue/command.c	Wed Mar 02 21:13:26 2016 -0500
@@ -24,12 +24,21 @@
 #include "mach_dep.h"
 #include "rogue.h"
 
+void display(void);
+void d_level(void);
+void u_level(void);
+void shell(void);
+void nameit(void);
+void namemonst(void);
+void count_gold(void);
+
 /*
  * command:
  *      Process the user commands
  */
 
-command()
+void
+command(void)
 {
     unsigned int ch;
     struct linked_list *item;
@@ -288,7 +297,7 @@
                         else {
                 after = FALSE;
                             player.t_action = A_NIL;
-                            fright();
+                            fright(NULL);
                         }
                     when 'g' : /* Give command: give slime-molds to monsters */
                         if (player.t_action == A_NIL) {
@@ -298,7 +307,7 @@
                         else {
                 after = FALSE;
                             player.t_action = A_NIL;
-                            give();
+                            give(NULL);
                         }
                     when 'G' :
                         if (player.t_action == A_NIL) {
@@ -357,14 +366,14 @@
             /* when '\\' : after = FALSE; ident_hero(); */
             when '\\' : msg("Charon (the Boatman) looks at you... ");
 
-                    when '/' : after = FALSE; identify(NULL);
+                    when '/' : after = FALSE; identify('\0');
                     when C_COUNT : count_gold();
                     when C_DIP : dip_it();
                     when C_DROP : player.t_action = C_DROP; 
                                   drop((struct linked_list *)NULL);
                     when C_EAT : eat();
-                    when C_QUAFF : quaff(-1, NULL, NULL, TRUE);
-                    when C_READ : read_scroll(-1, NULL, TRUE);
+                    when C_QUAFF : quaff(-1, 0, 0, TRUE);
+                    when C_READ : read_scroll(-1, 0, TRUE);
                     when C_SETTRAP : set_trap(&player, hero.y, hero.x);
                     when C_SEARCH :
                         if (player.t_action == A_NIL) {
@@ -379,7 +388,7 @@
                     when C_USE : use_mm(-1);
                     when C_WEAR : wear();
                     when C_WIELD : wield();
-                    when C_ZAP : if (!player_zap(NULL, FALSE)) after=FALSE;
+                    when C_ZAP : if (!player_zap(0, FALSE)) after=FALSE;
                     when C_CAST : cast();
                     when C_CHANT : chant();
                     when C_PRAY : pray();
@@ -638,7 +647,8 @@
  *      tell the player what is at a certain coordinates assuming
  *      it can be seen.
  */
-display()
+void
+display(void)
 {
     coord c;
     struct linked_list *item;
@@ -673,8 +683,7 @@
 
 /*UNUSED*/
 void
-quit(sig)
-int sig;
+quit(int sig)
 {
     register int oy, ox;
 
@@ -727,8 +736,8 @@
  *      killed by a program bug instead of voluntarily.
  */
 
-bugkill(sig)
-int sig;
+void
+bugkill(int sig)
 {
     signal(sig, quit);      /* If we get it again, give up */
     if (levtype == OUTSIDE) {
@@ -748,8 +757,8 @@
  *      Player gropes about him to find hidden things.
  */
 
-search(is_thief, door_chime)
-register bool is_thief, door_chime;
+void
+search(bool is_thief, bool door_chime)
 {
     register int x, y;
     register char ch,   /* The trap or door character */
@@ -861,7 +870,8 @@
  *      He wants to go down a level
  */
 
-d_level()
+void
+d_level(void)
 {
     bool no_phase=FALSE;
     char position = winat(hero.y, hero.x);
@@ -962,7 +972,8 @@
  *      He wants to go up a level
  */
 
-u_level()
+void
+u_level(void)
 {
     bool no_phase = FALSE;
     register struct linked_list *item;
@@ -1053,7 +1064,8 @@
  * Let him escape for a while
  */
 
-shell()
+void
+shell(void)
 {
     /*
      * Set the terminal back to original mode
@@ -1079,7 +1091,8 @@
 /*
  * see what we want to name -- an item or a monster.
  */
-nameit()
+void
+nameit(void)
 {
     char answer;
 
@@ -1103,9 +1116,8 @@
  * allow a user to call a potion, scroll, or ring something
  */
 
-nameitem(item, mark)
-struct linked_list *item;
-bool mark;
+void
+nameitem(struct linked_list *item, bool mark)
 {
     register struct object *obj;
     register char **guess = NULL, *elsewise = NULL;
@@ -1191,7 +1203,8 @@
 
 /* Name a monster */
 
-namemonst()
+void
+namemonst(void)
 {
     register struct thing *tp;
     struct linked_list *item;
@@ -1236,7 +1249,8 @@
     msg("There is no monster there to name.");
 }
 
-count_gold()
+void
+count_gold(void)
 {
         if (player.t_action != C_COUNT) {
             msg("You take a break to count your money.. ");
@@ -1259,7 +1273,8 @@
  * Teleport somewhere, anywhere...
  */
 
-do_teleport()
+void
+do_teleport(void)
 {
     int tlev;
     prbuf[0] = '\0';