Before starting to tinker, ran clang-format on files that seem like relevant starting...
[sgk-go] / interface / play_ascii.c
index 57465f7..f091af9 100644 (file)
 
 #include "gnugo.h"
 
 
 #include "gnugo.h"
 
+#include <ctype.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
-#include <ctype.h>
 
 #if READLINE
 
 #if READLINE
-#include <readline/readline.h>
 #include <readline/history.h>
 #include <readline/history.h>
+#include <readline/readline.h>
 #endif
 
 #endif
 
-#include "liberty.h"
+#include "gg_utils.h"
 #include "interface.h"
 #include "interface.h"
+#include "liberty.h"
 #include "sgftree.h"
 #include "sgftree.h"
-#include "gg_utils.h"
 
 #define DEBUG_COMMANDS "\
 capture <pos>    try to capture indicated group\n\
 
 #define DEBUG_COMMANDS "\
 capture <pos>    try to capture indicated group\n\
@@ -62,13 +62,13 @@ static int clock_on = 0;
 /* Keep track of the score estimated before the last computer move. */
 static int current_score_estimate = NO_SCORE;
 
 /* Keep track of the score estimated before the last computer move. */
 static int current_score_estimate = NO_SCORE;
 
-static void do_play_ascii(Gameinfo *gameinfo);
-static int ascii_endgame(Gameinfo *gameinfo, int reason);
-static void ascii_count(Gameinfo *gameinfo);
-static void showcapture(char *line);
-static void showdefense(char *line);
-static void ascii_goto(Gameinfo *gameinfo, char *line);
-static void ascii_free_handicap(Gameinfo *gameinfo, char *handicap_string);
+static void do_play_ascii(Gameinfogameinfo);
+static int ascii_endgame(Gameinfogameinfo, int reason);
+static void ascii_count(Gameinfogameinfo);
+static void showcapture(charline);
+static void showdefense(charline);
+static void ascii_goto(Gameinfo* gameinfo, char* line);
+static void ascii_free_handicap(Gameinfo* gameinfo, char* handicap_string);
 
 /* If sgf game info is written can't reset parameters like handicap, etc. */
 static int sgf_initialized;
 
 /* If sgf game info is written can't reset parameters like handicap, etc. */
 static int sgf_initialized;
@@ -78,27 +78,26 @@ static int sgf_initialized;
  */
 
 static void
  */
 
 static void
-make_letterbar(int boardsize, char *letterbar)
+make_letterbar(int boardsize, charletterbar)
 {
 {
-  int i, letteroffset;
-  char spaces[64];
-  char letter[64];
-
-  if (boardsize <= 25)
-    strcpy(spaces, " ");
-  strcpy(letterbar, "   ");
-  
-  for (i = 0; i < boardsize; i++) {
-    letteroffset = 'A';
-    if (i+letteroffset >= 'I')
-      letteroffset++;
-    strcat(letterbar, spaces);
-    sprintf(letter, "%c", i+letteroffset);
-    strcat(letterbar, letter);
-  }
+    int i, letteroffset;
+    char spaces[64];
+    char letter[64];
+
+    if (boardsize <= 25)
+        strcpy(spaces, " ");
+    strcpy(letterbar, "   ");
+
+    for (i = 0; i < boardsize; i++) {
+        letteroffset = 'A';
+        if (i + letteroffset >= 'I')
+            letteroffset++;
+        strcat(letterbar, spaces);
+        sprintf(letter, "%c", i + letteroffset);
+        strcat(letterbar, letter);
+    }
 }
 
 }
 
-
 /* This array contains +'s and -'s for the empty board positions.
  * hspot_size contains the board size that the grid has been
  * initialized to.
 /* This array contains +'s and -'s for the empty board positions.
  * hspot_size contains the board size that the grid has been
  * initialized to.
@@ -107,7 +106,6 @@ make_letterbar(int boardsize, char *letterbar)
 static int hspot_size;
 static char hspots[MAX_BOARD][MAX_BOARD];
 
 static int hspot_size;
 static char hspots[MAX_BOARD][MAX_BOARD];
 
-
 /*
  * Mark the handicap spots on the board.
  */
 /*
  * Mark the handicap spots on the board.
  */
@@ -115,75 +113,71 @@ static char hspots[MAX_BOARD][MAX_BOARD];
 static void
 set_handicap_spots(int boardsize)
 {
 static void
 set_handicap_spots(int boardsize)
 {
-  if (hspot_size == boardsize)
-    return;
-  
-  hspot_size = boardsize;
-  
-  memset(hspots, '.', sizeof(hspots));
-
-  if (boardsize == 5) {
-    /* place the outer 4 */
-    hspots[1][1] = '+';
-    hspots[boardsize-2][1] = '+';
-    hspots[1][boardsize-2] = '+';
-    hspots[boardsize-2][boardsize-2] = '+';
-    /* and the middle one */
-    hspots[boardsize/2][boardsize/2] = '+';
-    return;
-  }
-
-  if (!(boardsize%2)) {
-    /* If the board size is even, no center handicap spots. */
-    if (boardsize > 2 && boardsize < 12) {
-      /* Place the outer 4 only. */
-      hspots[2][2] = '+';
-      hspots[boardsize-3][2] = '+';
-      hspots[2][boardsize-3] = '+';
-      hspots[boardsize-3][boardsize-3] = '+';
-    }
-    else {
-      /* Place the outer 4 only. */
-      hspots[3][3] = '+';
-      hspots[boardsize-4][3] = '+';
-      hspots[3][boardsize-4] = '+';
-      hspots[boardsize-4][boardsize-4] = '+';
-    }
-  }
-  else {
-    /* Uneven board size */
-    if (boardsize > 2 && boardsize < 12) {
-      /* Place the outer 4... */
-      hspots[2][2] = '+';
-      hspots[boardsize-3][2] = '+';
-      hspots[2][boardsize-3] = '+';
-      hspots[boardsize-3][boardsize-3] = '+';
-
-      /* ...and the middle one. */
-      hspots[boardsize/2][boardsize/2] = '+';
+    if (hspot_size == boardsize)
+        return;
+
+    hspot_size = boardsize;
+
+    memset(hspots, '.', sizeof(hspots));
+
+    if (boardsize == 5) {
+        /* place the outer 4 */
+        hspots[1][1] = '+';
+        hspots[boardsize - 2][1] = '+';
+        hspots[1][boardsize - 2] = '+';
+        hspots[boardsize - 2][boardsize - 2] = '+';
+        /* and the middle one */
+        hspots[boardsize / 2][boardsize / 2] = '+';
+        return;
     }
     }
-    else if (boardsize > 12) {
-      /* Place the outer 4... */
-      hspots[3][3] = '+';
-      hspots[boardsize-4][3] = '+';
-      hspots[3][boardsize-4] = '+';
-      hspots[boardsize-4][boardsize-4] = '+';
-
-      /* ...and the inner 4... */
-      hspots[3][boardsize/2] = '+';
-      hspots[boardsize/2][3] = '+';
-      hspots[boardsize/2][boardsize-4] = '+';
-      hspots[boardsize-4][boardsize/2] = '+';
-
-      /* ...and the middle one. */
-      hspots[boardsize/2][boardsize/2] = '+';
+
+    if (!(boardsize % 2)) {
+        /* If the board size is even, no center handicap spots. */
+        if (boardsize > 2 && boardsize < 12) {
+            /* Place the outer 4 only. */
+            hspots[2][2] = '+';
+            hspots[boardsize - 3][2] = '+';
+            hspots[2][boardsize - 3] = '+';
+            hspots[boardsize - 3][boardsize - 3] = '+';
+        } else {
+            /* Place the outer 4 only. */
+            hspots[3][3] = '+';
+            hspots[boardsize - 4][3] = '+';
+            hspots[3][boardsize - 4] = '+';
+            hspots[boardsize - 4][boardsize - 4] = '+';
+        }
+    } else {
+        /* Uneven board size */
+        if (boardsize > 2 && boardsize < 12) {
+            /* Place the outer 4... */
+            hspots[2][2] = '+';
+            hspots[boardsize - 3][2] = '+';
+            hspots[2][boardsize - 3] = '+';
+            hspots[boardsize - 3][boardsize - 3] = '+';
+
+            /* ...and the middle one. */
+            hspots[boardsize / 2][boardsize / 2] = '+';
+        } else if (boardsize > 12) {
+            /* Place the outer 4... */
+            hspots[3][3] = '+';
+            hspots[boardsize - 4][3] = '+';
+            hspots[3][boardsize - 4] = '+';
+            hspots[boardsize - 4][boardsize - 4] = '+';
+
+            /* ...and the inner 4... */
+            hspots[3][boardsize / 2] = '+';
+            hspots[boardsize / 2][3] = '+';
+            hspots[boardsize / 2][boardsize - 4] = '+';
+            hspots[boardsize - 4][boardsize / 2] = '+';
+
+            /* ...and the middle one. */
+            hspots[boardsize / 2][boardsize / 2] = '+';
+        }
     }
     }
-  }
 
 
-  return;
+    return;
 }
 
 }
 
-
 #define WHITECOLOR "\x1B[41m"
 #define BLACKCOLOR "\x1B[44m"
 #define RESETCOLOR "\x1B[0m"
 #define WHITECOLOR "\x1B[41m"
 #define BLACKCOLOR "\x1B[44m"
 #define RESETCOLOR "\x1B[0m"
@@ -198,143 +192,144 @@ set_handicap_spots(int boardsize)
 static void
 ascii_showboard(void)
 {
 static void
 ascii_showboard(void)
 {
-  int i, j;
-  char letterbar[64];
-  int last_pos_was_move;
-  int pos_is_move;
-  int dead;
-  int last_move = get_last_move();
-  
-  make_letterbar(board_size, letterbar);
-  set_handicap_spots(board_size);
-
-  printf("\n");
-  printf("    White (" WHITECOLOR " " RESETCOLOR ") has captured %d pieces\n", black_captured);
-  printf("    Black (" BLACKCOLOR " " RESETCOLOR ") has captured %d pieces\n", white_captured);
-  if (showscore) {
-    if (current_score_estimate == NO_SCORE)
-      printf("    No score estimate is available yet.\n");
-    else if (current_score_estimate < 0)
-      printf("    Estimated score: Black is ahead by %d\n",
-            -current_score_estimate);
-    else if (current_score_estimate > 0)
-      printf("    Estimated score: White is ahead by %d\n",
-            current_score_estimate);
-    else
-      printf("    Estimated score: Even!\n");
-  }
-   
-  printf("\n");
-
-  fflush(stdout);
-  printf("%s", letterbar);
-
-  if (get_last_player() != EMPTY) {
-    gfprintf(stdout, "        Last move: %s %1m",
-            get_last_player() == WHITE ? "White" : "Black",
-            last_move);
-  }
-
-  printf("\n");
-  fflush(stdout);
-  
+    int i, j;
+    char letterbar[64];
+    int last_pos_was_move;
+    int pos_is_move;
+    int dead;
+    int last_move = get_last_move();
+
+    make_letterbar(board_size, letterbar);
+    set_handicap_spots(board_size);
+
+    printf("\n");
+    printf("    White (" WHITECOLOR " " RESETCOLOR ") has captured %d pieces\n", black_captured);
+    printf("    Black (" BLACKCOLOR " " RESETCOLOR ") has captured %d pieces\n", white_captured);
+    if (showscore) {
+        if (current_score_estimate == NO_SCORE)
+            printf("    No score estimate is available yet.\n");
+        else if (current_score_estimate < 0)
+            printf("    Estimated score: Black is ahead by %d\n",
+                -current_score_estimate);
+        else if (current_score_estimate > 0)
+            printf("    Estimated score: White is ahead by %d\n",
+                current_score_estimate);
+        else
+            printf("    Estimated score: Even!\n");
+    }
+
+    printf("\n");
+
+    fflush(stdout);
+    printf("%s", letterbar);
+
+    if (get_last_player() != EMPTY) {
+        gfprintf(stdout, "        Last move: %s %1m",
+            get_last_player() == WHITE ? "White" : "Black",
+            last_move);
+    }
+
+    printf("\n");
+    fflush(stdout);
+
     for (i = 0; i < board_size; i++) {
         printf(" %2d", board_size - i);
         last_pos_was_move = 0;
         for (j = 0; j < board_size; j++) {
     for (i = 0; i < board_size; i++) {
         printf(" %2d", board_size - i);
         last_pos_was_move = 0;
         for (j = 0; j < board_size; j++) {
-            if (POS(i, j) == last_move) pos_is_move = 128;
-            else pos_is_move = 0;
+            if (POS(i, j) == last_move)
+                pos_is_move = 128;
+            else
+                pos_is_move = 0;
             dead = (dragon_status(POS(i, j)) == DEAD) && showdead;
             switch (BOARD(i, j) + pos_is_move + last_pos_was_move) {
             dead = (dragon_status(POS(i, j)) == DEAD) && showdead;
             switch (BOARD(i, j) + pos_is_move + last_pos_was_move) {
-                case EMPTY+128:
-                case EMPTY:
-                    if (i % 2 == 0) {
-                        if (j % 2 == 0) {
-                            printf(BACK1COLOR "  " RESETCOLOR);
-                        } else {
-                            printf(BACK2COLOR "  " RESETCOLOR);
-                        }
+            case EMPTY + 128:
+            case EMPTY:
+                if (i % 2 == 0) {
+                    if (j % 2 == 0) {
+                        printf(BACK1COLOR "  " RESETCOLOR);
                     } else {
                     } else {
-                        if (j % 2 == 0) {
-                            printf(BACK2COLOR "  " RESETCOLOR);
-                        } else {
-                            printf(BACK1COLOR "  " RESETCOLOR);
-                        }
+                        printf(BACK2COLOR "  " RESETCOLOR);
                     }
                     }
-                    last_pos_was_move = 0;
-                    break;
-                case BLACK:
-                    printf(BLACKCOLOR "  " RESETCOLOR);
-                    last_pos_was_move = 0;
-                    break;
-                case WHITE:
-                    printf(WHITECOLOR "  " RESETCOLOR);
-                    last_pos_was_move = 0;
-                    break;
-                case BLACK+128:
-                    printf(BLACKCOLOR "()" RESETCOLOR);
-                    last_pos_was_move = 0;
-                    break;
-                case WHITE+128:
-                    printf(WHITECOLOR "()" RESETCOLOR);
-                    last_pos_was_move = 0;
-                    break;
-                case EMPTY+256:
-                    if (i % 2 == 0) {
-                        if (j % 2 == 0) {
-                            printf(BACK1COLOR "  " RESETCOLOR);
-                        } else {
-                            printf(BACK2COLOR "  " RESETCOLOR);
-                        }
+                } else {
+                    if (j % 2 == 0) {
+                        printf(BACK2COLOR "  " RESETCOLOR);
                     } else {
                     } else {
-                        if (j % 2 == 0) {
-                            printf(BACK2COLOR "  " RESETCOLOR);
-                        } else {
-                            printf(BACK1COLOR "  " RESETCOLOR);
-                        }
+                        printf(BACK1COLOR "  " RESETCOLOR);
                     }
                     }
-                    last_pos_was_move = 0;
-                    break;
-                case BLACK+256:
-                    printf(BLACKCOLOR "  " RESETCOLOR);
-                    last_pos_was_move = 0;
-                    break;
-                case WHITE+256:
-                    printf(WHITECOLOR "  " RESETCOLOR);
-                    last_pos_was_move = 0;
-                    break;
-                default:
-                    fprintf(stderr, "Illegal board value %d\n", (int) BOARD(i, j));
-                    exit(EXIT_FAILURE);
-                    break;
+                }
+                last_pos_was_move = 0;
+                break;
+            case BLACK:
+                printf(BLACKCOLOR "  " RESETCOLOR);
+                last_pos_was_move = 0;
+                break;
+            case WHITE:
+                printf(WHITECOLOR "  " RESETCOLOR);
+                last_pos_was_move = 0;
+                break;
+            case BLACK + 128:
+                printf(BLACKCOLOR "()" RESETCOLOR);
+                last_pos_was_move = 0;
+                break;
+            case WHITE + 128:
+                printf(WHITECOLOR "()" RESETCOLOR);
+                last_pos_was_move = 0;
+                break;
+            case EMPTY + 256:
+                if (i % 2 == 0) {
+                    if (j % 2 == 0) {
+                        printf(BACK1COLOR "  " RESETCOLOR);
+                    } else {
+                        printf(BACK2COLOR "  " RESETCOLOR);
+                    }
+                } else {
+                    if (j % 2 == 0) {
+                        printf(BACK2COLOR "  " RESETCOLOR);
+                    } else {
+                        printf(BACK1COLOR "  " RESETCOLOR);
+                    }
+                }
+                last_pos_was_move = 0;
+                break;
+            case BLACK + 256:
+                printf(BLACKCOLOR "  " RESETCOLOR);
+                last_pos_was_move = 0;
+                break;
+            case WHITE + 256:
+                printf(WHITECOLOR "  " RESETCOLOR);
+                last_pos_was_move = 0;
+                break;
+            default:
+                fprintf(stderr, "Illegal board value %d\n", (int)BOARD(i, j));
+                exit(EXIT_FAILURE);
+                break;
             }
         }
             }
         }
-    
-    if (last_pos_was_move == 0) {
-      if (board_size > 10)
-       printf(" %2d", board_size - i);
-      else
-       printf(" %1d", board_size - i);
+
+        if (last_pos_was_move == 0) {
+            if (board_size > 10)
+                printf(" %2d", board_size - i);
+            else
+                printf(" %1d", board_size - i);
+        } else {
+            if (board_size > 10)
+                printf("%2d", board_size - i);
+            else
+                printf("%1d", board_size - i);
+        }
+        printf("\n");
     }
     }
-    else {
-      if (board_size > 10)
-       printf("%2d", board_size - i);
-      else
-       printf("%1d", board_size - i);
+
+    fflush(stdout);
+    printf("%s\n\n", letterbar);
+    fflush(stdout);
+
+    if (clock_on) {
+        clock_print(WHITE);
+        clock_print(BLACK);
     }
     }
-    printf("\n");
-  }
-  
-  fflush(stdout);
-  printf("%s\n\n", letterbar);
-  fflush(stdout);
-
-  if (clock_on) {
-    clock_print(WHITE);
-    clock_print(BLACK);
-  }
-  
-}  /* end ascii_showboard */
+
+} /* end ascii_showboard */
 
 /*
  * command help
 
 /*
  * command help
@@ -343,1004 +338,1045 @@ ascii_showboard(void)
 static void
 show_commands(void)
 {
 static void
 show_commands(void)
 {
-  printf("\nCommands:\n");
-  printf(" back                Take back your last move\n");
-  printf(" boardsize           Set boardsize (on move 1 only)\n");
-  printf(" comment             Write a comment to outputfile\n");
-  printf(" depth <num>         Set depth for reading\n");
-  printf(" display             Display game board\n");
-  printf(" exit                Exit GNU Go\n");
-  printf(" force <move>        Force a move for current color\n");
-  printf(" forward             Go to next node in game tree\n");
-  printf(" goto <movenum>      Go to movenum in game tree\n");
-  printf(" level <amount>      Playing level (default = 10)\n");
-  printf(" handicap <num>      Set fixed handicap (on move 1 only)\n");
-  printf(" freehandicap <num>  Place free handicap (on move 1 only)\n");
-  printf("                     Omit <num> to place handicap yourself\n");
-  printf(" help                Display this help menu\n");
-  printf(" helpdebug           Display debug help menu\n");
-  printf(" info                Display program settings\n");
-  printf(" komi                Set komi (on move 1 only)\n");
-  printf(" last                Goto last node in game tree\n");
-  printf(" pass                Pass on your move\n");
-  printf(" play <num>          Play <num> moves\n");
-  printf(" playblack           Play as Black (switch if White)\n");
-  printf(" playwhite           Play as White (switch if Black)\n");
-  printf(" quit                Exit GNU Go\n");
-  printf(" resign              Resign the current game\n");
-  printf(" save <file>         Save the current game\n");
-  printf(" load <file>         Load a game from file\n");
-  printf(" score               Toggle display of score On/Off\n");
-  printf(" showboard           Toggle display of board On/Off\n");
-  printf(" switch              Switch the color you are playing\n");
-  printf(" undo                Take the last move back (same as back)\n");
-  printf(" <move>              A move of the format <letter><number>");
-  printf("\n");
+    printf("\nCommands:\n");
+    printf(" back                Take back your last move\n");
+    printf(" boardsize           Set boardsize (on move 1 only)\n");
+    printf(" comment             Write a comment to outputfile\n");
+    printf(" depth <num>         Set depth for reading\n");
+    printf(" display             Display game board\n");
+    printf(" exit                Exit GNU Go\n");
+    printf(" force <move>        Force a move for current color\n");
+    printf(" forward             Go to next node in game tree\n");
+    printf(" goto <movenum>      Go to movenum in game tree\n");
+    printf(" level <amount>      Playing level (default = 10)\n");
+    printf(" handicap <num>      Set fixed handicap (on move 1 only)\n");
+    printf(" freehandicap <num>  Place free handicap (on move 1 only)\n");
+    printf("                     Omit <num> to place handicap yourself\n");
+    printf(" help                Display this help menu\n");
+    printf(" helpdebug           Display debug help menu\n");
+    printf(" info                Display program settings\n");
+    printf(" komi                Set komi (on move 1 only)\n");
+    printf(" last                Goto last node in game tree\n");
+    printf(" pass                Pass on your move\n");
+    printf(" play <num>          Play <num> moves\n");
+    printf(" playblack           Play as Black (switch if White)\n");
+    printf(" playwhite           Play as White (switch if Black)\n");
+    printf(" quit                Exit GNU Go\n");
+    printf(" resign              Resign the current game\n");
+    printf(" save <file>         Save the current game\n");
+    printf(" load <file>         Load a game from file\n");
+    printf(" score               Toggle display of score On/Off\n");
+    printf(" showboard           Toggle display of board On/Off\n");
+    printf(" switch              Switch the color you are playing\n");
+    printf(" undo                Take the last move back (same as back)\n");
+    printf(" <move>              A move of the format <letter><number>");
+    printf("\n");
 }
 
 }
 
-enum commands {INVALID = -1, END, EXIT, QUIT, RESIGN, 
-              PASS, MOVE, FORCE, SWITCH,
-              PLAY, PLAYBLACK, PLAYWHITE,
-              SETHANDICAP, FREEHANDICAP, SETBOARDSIZE, SETKOMI,
-              SETDEPTH,
-               INFO, DISPLAY, SHOWBOARD, HELP, UNDO, COMMENT, SCORE,
-               CMD_DEAD, CMD_BACK, CMD_FORWARD, CMD_LAST,
-               CMD_CAPTURE, CMD_DEFEND,
-               CMD_HELPDEBUG, CMD_SHOWAREA, CMD_SHOWMOYO, CMD_SHOWTERRI,
-               CMD_GOTO, CMD_SAVE, CMD_LOAD, CMD_SHOWDRAGONS, CMD_LISTDRAGONS,
-              SETLEVEL, NEW, COUNT, CONTINUE
+enum commands { INVALID = -1,
+    END,
+    EXIT,
+    QUIT,
+    RESIGN,
+    PASS,
+    MOVE,
+    FORCE,
+    SWITCH,
+    PLAY,
+    PLAYBLACK,
+    PLAYWHITE,
+    SETHANDICAP,
+    FREEHANDICAP,
+    SETBOARDSIZE,
+    SETKOMI,
+    SETDEPTH,
+    INFO,
+    DISPLAY,
+    SHOWBOARD,
+    HELP,
+    UNDO,
+    COMMENT,
+    SCORE,
+    CMD_DEAD,
+    CMD_BACK,
+    CMD_FORWARD,
+    CMD_LAST,
+    CMD_CAPTURE,
+    CMD_DEFEND,
+    CMD_HELPDEBUG,
+    CMD_SHOWAREA,
+    CMD_SHOWMOYO,
+    CMD_SHOWTERRI,
+    CMD_GOTO,
+    CMD_SAVE,
+    CMD_LOAD,
+    CMD_SHOWDRAGONS,
+    CMD_LISTDRAGONS,
+    SETLEVEL,
+    NEW,
+    COUNT,
+    CONTINUE
 };
 
 };
 
-
 /*
  * Check if we have a valid command.
  */
 
 static int
 /*
  * Check if we have a valid command.
  */
 
 static int
-get_command(char *command)
+get_command(charcommand)
 {
 {
-  char c;
-  int d;
-
-  /* Check to see if a move was input. */
-  if (!((sscanf(command, "%c%d", &c, &d) != 2)
-       || ((c = toupper((int) c)) < 'A')
-       || ((c = toupper((int) c)) > 'Z')
-       || (c == 'I')))
-    return MOVE;
-
-  /* help shortcut */
-  if (command[0] == '?')
-    return HELP;
-
-  /* Kill leading spaces. */
-  while (command[0] == ' ')
-    command++;
-
-  if (!strncmp(command, "playblack", 9)) return PLAYBLACK;
-  if (!strncmp(command, "playwhite", 9)) return PLAYWHITE;
-  if (!strncmp(command, "showboard", 9)) return SHOWBOARD;
-  if (!strncmp(command, "showdragons", 9)) return CMD_SHOWDRAGONS;
-  if (!strncmp(command, "listdragons", 9)) return CMD_LISTDRAGONS;
-  if (!strncmp(command, "boardsize", 9)) return SETBOARDSIZE;
-  if (!strncmp(command, "freehandicap", 9)) return FREEHANDICAP;
-  if (!strncmp(command, "handicap", 5)) return SETHANDICAP;
-  if (!strncmp(command, "display", 7)) return DISPLAY;
-  if (!strncmp(command, "helpdebug", 7)) return CMD_HELPDEBUG;
-  if (!strncmp(command, "resign", 6)) return RESIGN;
-  if (!strncmp(command, "showmoyo", 6)) return CMD_SHOWMOYO;
-  if (!strncmp(command, "showterri", 6)) return CMD_SHOWTERRI;
-  if (!strncmp(command, "showarea", 6)) return CMD_SHOWAREA;
-  if (!strncmp(command, "depth", 5)) return SETDEPTH;
-  if (!strncmp(command, "switch", 5)) return SWITCH;
-  if (!strncmp(command, "komi", 4)) return SETKOMI;
-  if (!strncmp(command, "play", 4)) return PLAY;
-  if (!strncmp(command, "info", 4)) return INFO;
-  if (!strncmp(command, "force", 4)) return FORCE;
-  if (!strncmp(command, "level", 5)) return SETLEVEL;
-  if (!strncmp(command, "pass", 4)) return PASS;
-  if (!strncmp(command, "save", 3)) return CMD_SAVE;
-  if (!strncmp(command, "load", 3)) return CMD_LOAD;
-  if (!strncmp(command, "end", 3)) return END;
-  if (!strncmp(command, "move", 3)) return MOVE;
-  if (!strncmp(command, "undo", 3)) return UNDO;
-  if (!strncmp(command, "comment", 3)) return COMMENT;
-  if (!strncmp(command, "score", 3)) return SCORE;
-  if (!strncmp(command, "dead", 3)) return CMD_DEAD;
-  if (!strncmp(command, "capture", 3)) return CMD_CAPTURE;
-  if (!strncmp(command, "defend", 3)) return CMD_DEFEND;
-  if (!strncmp(command, "exit", 4)) return EXIT;
-  if (!strncmp(command, "quit", 4)) return QUIT;
-  if (!strncmp(command, "help", 1)) return HELP;
-  if (!strncmp(command, "back", 2)) return CMD_BACK;
-  if (!strncmp(command, "forward", 2)) return CMD_FORWARD;
-  if (!strncmp(command, "last", 2)) return CMD_LAST;
-  if (!strncmp(command, "goto", 2)) return CMD_GOTO;
-  if (!strncmp(command, "game", 2)) return NEW;
-  if (!strncmp(command, "count", 3)) return COUNT;
-  if (!strncmp(command, "continue", 4)) return CONTINUE;
-
-  /* No valid command was found. */
-  return INVALID;
+    char c;
+    int d;
+
+    /* Check to see if a move was input. */
+    if (!((sscanf(command, "%c%d", &c, &d) != 2)
+            || ((c = toupper((int)c)) < 'A')
+            || ((c = toupper((int)c)) > 'Z')
+            || (c == 'I')))
+        return MOVE;
+
+    /* help shortcut */
+    if (command[0] == '?')
+        return HELP;
+
+    /* Kill leading spaces. */
+    while (command[0] == ' ')
+        command++;
+
+    if (!strncmp(command, "playblack", 9))
+        return PLAYBLACK;
+    if (!strncmp(command, "playwhite", 9))
+        return PLAYWHITE;
+    if (!strncmp(command, "showboard", 9))
+        return SHOWBOARD;
+    if (!strncmp(command, "showdragons", 9))
+        return CMD_SHOWDRAGONS;
+    if (!strncmp(command, "listdragons", 9))
+        return CMD_LISTDRAGONS;
+    if (!strncmp(command, "boardsize", 9))
+        return SETBOARDSIZE;
+    if (!strncmp(command, "freehandicap", 9))
+        return FREEHANDICAP;
+    if (!strncmp(command, "handicap", 5))
+        return SETHANDICAP;
+    if (!strncmp(command, "display", 7))
+        return DISPLAY;
+    if (!strncmp(command, "helpdebug", 7))
+        return CMD_HELPDEBUG;
+    if (!strncmp(command, "resign", 6))
+        return RESIGN;
+    if (!strncmp(command, "showmoyo", 6))
+        return CMD_SHOWMOYO;
+    if (!strncmp(command, "showterri", 6))
+        return CMD_SHOWTERRI;
+    if (!strncmp(command, "showarea", 6))
+        return CMD_SHOWAREA;
+    if (!strncmp(command, "depth", 5))
+        return SETDEPTH;
+    if (!strncmp(command, "switch", 5))
+        return SWITCH;
+    if (!strncmp(command, "komi", 4))
+        return SETKOMI;
+    if (!strncmp(command, "play", 4))
+        return PLAY;
+    if (!strncmp(command, "info", 4))
+        return INFO;
+    if (!strncmp(command, "force", 4))
+        return FORCE;
+    if (!strncmp(command, "level", 5))
+        return SETLEVEL;
+    if (!strncmp(command, "pass", 4))
+        return PASS;
+    if (!strncmp(command, "save", 3))
+        return CMD_SAVE;
+    if (!strncmp(command, "load", 3))
+        return CMD_LOAD;
+    if (!strncmp(command, "end", 3))
+        return END;
+    if (!strncmp(command, "move", 3))
+        return MOVE;
+    if (!strncmp(command, "undo", 3))
+        return UNDO;
+    if (!strncmp(command, "comment", 3))
+        return COMMENT;
+    if (!strncmp(command, "score", 3))
+        return SCORE;
+    if (!strncmp(command, "dead", 3))
+        return CMD_DEAD;
+    if (!strncmp(command, "capture", 3))
+        return CMD_CAPTURE;
+    if (!strncmp(command, "defend", 3))
+        return CMD_DEFEND;
+    if (!strncmp(command, "exit", 4))
+        return EXIT;
+    if (!strncmp(command, "quit", 4))
+        return QUIT;
+    if (!strncmp(command, "help", 1))
+        return HELP;
+    if (!strncmp(command, "back", 2))
+        return CMD_BACK;
+    if (!strncmp(command, "forward", 2))
+        return CMD_FORWARD;
+    if (!strncmp(command, "last", 2))
+        return CMD_LAST;
+    if (!strncmp(command, "goto", 2))
+        return CMD_GOTO;
+    if (!strncmp(command, "game", 2))
+        return NEW;
+    if (!strncmp(command, "count", 3))
+        return COUNT;
+    if (!strncmp(command, "continue", 4))
+        return CONTINUE;
+
+    /* No valid command was found. */
+    return INVALID;
 }
 
 }
 
-
 /*
  * Write sgf root node. 
  */
 
 static void
 /*
  * Write sgf root node. 
  */
 
 static void
-init_sgf(Gameinfo *ginfo)
+init_sgf(Gameinfoginfo)
 {
 {
-  if (sgf_initialized)
-    return;
-  sgf_initialized = 1;
+    if (sgf_initialized)
+        return;
+    sgf_initialized = 1;
 
 
-  sgf_write_header(sgftree.root, 1, get_random_seed(), komi,
-                  ginfo->handicap, get_level(), chinese_rules);
-  if (ginfo->handicap > 0)
-    sgffile_recordboard(sgftree.root);
+    sgf_write_header(sgftree.root, 1, get_random_seed(), komi,
+        ginfo->handicap, get_level(), chinese_rules);
+    if (ginfo->handicap > 0)
+        sgffile_recordboard(sgftree.root);
 }
 
 }
 
-
 /*
  * Generate the computer move. 
  */
 
 static int
 /*
  * Generate the computer move. 
  */
 
 static int
-computer_move(Gameinfo *gameinfo, int *passes)
+computer_move(Gameinfo* gameinfo, int* passes)
 {
 {
-  int move;
-  float move_value;
-  int resign;
-  int resignation_declined = 0;
-  float upper_bound, lower_bound;
-
-  init_sgf(gameinfo);
-
-  /* Generate computer move. */
-  if (autolevel_on)
-    adjust_level_offset(gameinfo->to_move);
-  move = genmove(gameinfo->to_move, &move_value, &resign);
-  if (resignation_allowed && resign) {
-    int state = ascii_endgame(gameinfo, 2);
-    if (state != -1)
-      return state;
-
-    /* The opponent declined resignation. Remember not to resign again. */
-    resignation_allowed = 0;
-    resignation_declined = 1;
-  }
-
-  if (showscore) {
-    gnugo_estimate_score(&upper_bound, &lower_bound);
-    current_score_estimate = (int) ((lower_bound + upper_bound) / 2.0);
-  }
-  
-  mprintf("%s(%d): %1m\n", color_to_string(gameinfo->to_move),
-         movenum + 1, move);
-  if (is_pass(move))
-    (*passes)++;
-  else
-    *passes = 0;
+    int move;
+    float move_value;
+    int resign;
+    int resignation_declined = 0;
+    float upper_bound, lower_bound;
+
+    init_sgf(gameinfo);
+
+    /* Generate computer move. */
+    if (autolevel_on)
+        adjust_level_offset(gameinfo->to_move);
+    move = genmove(gameinfo->to_move, &move_value, &resign);
+    if (resignation_allowed && resign) {
+        int state = ascii_endgame(gameinfo, 2);
+        if (state != -1)
+            return state;
+
+        /* The opponent declined resignation. Remember not to resign again. */
+        resignation_allowed = 0;
+        resignation_declined = 1;
+    }
 
 
-  gnugo_play_move(move, gameinfo->to_move);
-  sgffile_add_debuginfo(sgftree.lastnode, move_value);
-  sgftreeAddPlay(&sgftree, gameinfo->to_move, I(move), J(move));
-  if (resignation_declined)
-    sgftreeAddComment(&sgftree, "GNU Go resignation was declined");
-  sgffile_output(&sgftree);
+    if (showscore) {
+        gnugo_estimate_score(&upper_bound, &lower_bound);
+        current_score_estimate = (int)((lower_bound + upper_bound) / 2.0);
+    }
 
 
-  gameinfo->to_move = OTHER_COLOR(gameinfo->to_move);
-  return 0;
-}
+    mprintf("%s(%d): %1m\n", color_to_string(gameinfo->to_move),
+        movenum + 1, move);
+    if (is_pass(move))
+        (*passes)++;
+    else
+        *passes = 0;
 
 
+    gnugo_play_move(move, gameinfo->to_move);
+    sgffile_add_debuginfo(sgftree.lastnode, move_value);
+    sgftreeAddPlay(&sgftree, gameinfo->to_move, I(move), J(move));
+    if (resignation_declined)
+        sgftreeAddComment(&sgftree, "GNU Go resignation was declined");
+    sgffile_output(&sgftree);
+
+    gameinfo->to_move = OTHER_COLOR(gameinfo->to_move);
+    return 0;
+}
 
 /*
  * Make a move.
  */
 
 static int
 
 /*
  * Make a move.
  */
 
 static int
-do_move(Gameinfo *gameinfo, char *command, int *passes, int force)
+do_move(Gameinfo* gameinfo, char* command, int* passes, int force)
 {
 {
-  int move = string_to_location(board_size, command);
+    int move = string_to_location(board_size, command);
 
 
-  if (move == NO_MOVE) {
-    printf("\nInvalid move: %s\n", command);
-    return 0;
-  }
-  
-  if (!is_allowed_move(move, gameinfo->to_move)) {
-    printf("\nIllegal move: %s", command);
-    return 0;
-  }
-
-  *passes = 0;
-  TRACE("\nyour move: %1m\n\n", move);
-  init_sgf(gameinfo);
-  gnugo_play_move(move, gameinfo->to_move);
-  sgffile_add_debuginfo(sgftree.lastnode, 0.0);
-  sgftreeAddPlay(&sgftree, gameinfo->to_move, I(move), J(move));
-  sgffile_output(&sgftree);
-  
-  if (opt_showboard) {
-    ascii_showboard();
-    printf("GNU Go is thinking...\n");
-  }
+    if (move == NO_MOVE) {
+        printf("\nInvalid move: %s\n", command);
+        return 0;
+    }
 
 
-  if (force) {
-    gameinfo->computer_player = OTHER_COLOR(gameinfo->computer_player);
-    gameinfo->to_move = OTHER_COLOR(gameinfo->to_move);
-    sgftreeAddComment(&sgftree, "forced");
-    return 0;
-  }
+    if (!is_allowed_move(move, gameinfo->to_move)) {
+        printf("\nIllegal move: %s", command);
+        return 0;
+    }
 
 
-  gameinfo->to_move = OTHER_COLOR(gameinfo->to_move);
-  return computer_move(gameinfo, passes);
-}
+    *passes = 0;
+    TRACE("\nyour move: %1m\n\n", move);
+    init_sgf(gameinfo);
+    gnugo_play_move(move, gameinfo->to_move);
+    sgffile_add_debuginfo(sgftree.lastnode, 0.0);
+    sgftreeAddPlay(&sgftree, gameinfo->to_move, I(move), J(move));
+    sgffile_output(&sgftree);
+
+    if (opt_showboard) {
+        ascii_showboard();
+        printf("GNU Go is thinking...\n");
+    }
 
 
+    if (force) {
+        gameinfo->computer_player = OTHER_COLOR(gameinfo->computer_player);
+        gameinfo->to_move = OTHER_COLOR(gameinfo->to_move);
+        sgftreeAddComment(&sgftree, "forced");
+        return 0;
+    }
+
+    gameinfo->to_move = OTHER_COLOR(gameinfo->to_move);
+    return computer_move(gameinfo, passes);
+}
 
 /*
  * Make a pass.
  */
 
 static int
 
 /*
  * Make a pass.
  */
 
 static int
-do_pass(Gameinfo *gameinfo, int *passes, int force)
+do_pass(Gameinfo* gameinfo, int* passes, int force)
 {
 {
-  (*passes)++;
-  init_sgf(gameinfo);
-  gnugo_play_move(PASS_MOVE, gameinfo->to_move);
-  sgffile_add_debuginfo(sgftree.lastnode, 0.0);
-  sgftreeAddPlay(&sgftree, gameinfo->to_move, -1, -1);
-  sgffile_output(&sgftree);
-
-  gameinfo->to_move = OTHER_COLOR(gameinfo->to_move);
-  if (force) {
-    gameinfo->computer_player = OTHER_COLOR(gameinfo->computer_player);
-    sgftreeAddComment(&sgftree, "forced");
-    return 0;
-  }
+    (*passes)++;
+    init_sgf(gameinfo);
+    gnugo_play_move(PASS_MOVE, gameinfo->to_move);
+    sgffile_add_debuginfo(sgftree.lastnode, 0.0);
+    sgftreeAddPlay(&sgftree, gameinfo->to_move, -1, -1);
+    sgffile_output(&sgftree);
 
 
-  return computer_move(gameinfo, passes);
-}
+    gameinfo->to_move = OTHER_COLOR(gameinfo->to_move);
+    if (force) {
+        gameinfo->computer_player = OTHER_COLOR(gameinfo->computer_player);
+        sgftreeAddComment(&sgftree, "forced");
+        return 0;
+    }
 
 
+    return computer_move(gameinfo, passes);
+}
 
 /*
  * Play a game against an ascii client.
  */
 
 
 /*
  * Play a game against an ascii client.
  */
 
-void
-play_ascii(SGFTree *tree, Gameinfo *gameinfo, char *filename, char *until)
+void play_ascii(SGFTree* tree, Gameinfo* gameinfo, char* filename, char* until)
 {
 {
-  int sz;
-  
-  setvbuf(stdout, (char *)NULL, _IONBF, 0); /* No buffering. */
-  
-  sgftree = *tree;
-
-  if (filename) {
-    /* No need to check for failure here since that was already done
+    int sz;
+
+    setvbuf(stdout, (char*)NULL, _IONBF, 0); /* No buffering. */
+
+    sgftree = *tree;
+
+    if (filename) {
+        /* No need to check for failure here since that was already done
      * when it was loaded in main().
      *
      * FIXME: Why do we load the game again?
      */
      * when it was loaded in main().
      *
      * FIXME: Why do we load the game again?
      */
-    gameinfo_play_sgftree(gameinfo, &sgftree, until);
-    sgf_initialized = 1;
-  }
-  else {
-    if (sgfGetIntProperty(sgftree.root, "SZ", &sz)) 
-      gnugo_clear_board(sz);
-    if (gameinfo->handicap == 0)
-      gameinfo->to_move = BLACK;
-    else {
-      gameinfo->handicap = place_fixed_handicap(gameinfo->handicap);
-      gameinfo->to_move = WHITE;
+        gameinfo_play_sgftree(gameinfo, &sgftree, until);
+        sgf_initialized = 1;
+    } else {
+        if (sgfGetIntProperty(sgftree.root, "SZ", &sz))
+            gnugo_clear_board(sz);
+        if (gameinfo->handicap == 0)
+            gameinfo->to_move = BLACK;
+        else {
+            gameinfo->handicap = place_fixed_handicap(gameinfo->handicap);
+            gameinfo->to_move = WHITE;
+        }
+        sgf_initialized = 0;
     }
     }
-    sgf_initialized = 0;
-  }
 
 
-  do_play_ascii(gameinfo);
-  printf("\nThanks! for playing GNU Go.\n\n");
+    do_play_ascii(gameinfo);
+    printf("\nThanks! for playing GNU Go.\n\n");
 
 
-  /* main() frees the tree and we might have changed it. */
-  *tree = sgftree;
+    /* main() frees the tree and we might have changed it. */
+    *tree = sgftree;
 }
 
 }
 
-
-void
-do_play_ascii(Gameinfo *gameinfo)
+void do_play_ascii(Gameinfo* gameinfo)
 {
 {
-  int m, num;
-  float fnum;
-  int passes = 0;  /* two passes and its over */
-  int tmp;
-  char line[80];
-  char *line_ptr = line;
-  char *command;
-  char *tmpstring;
-  int state = 1;
-
-  if (have_time_settings())
-    clock_on = 1;
-
-  while (state == 1) {
-    state = 0;
-
-    /* No score is estimated yet. */
-    current_score_estimate = NO_SCORE;
-
-    /* Allow resignation at interface level (the engine may still be not
+    int m, num;
+    float fnum;
+    int passes = 0; /* two passes and its over */
+    int tmp;
+    char line[80];
+    char* line_ptr = line;
+    char* command;
+    char* tmpstring;
+    int state = 1;
+
+    if (have_time_settings())
+        clock_on = 1;
+
+    while (state == 1) {
+        state = 0;
+
+        /* No score is estimated yet. */
+        current_score_estimate = NO_SCORE;
+
+        /* Allow resignation at interface level (the engine may still be not
      * allowed to resign.
      */
      * allowed to resign.
      */
-    resignation_allowed = 1;
+        resignation_allowed = 1;
 
 
-    printf("\nBeginning ASCII mode game.\n\n");
-    gameinfo_print(gameinfo);
+        printf("\nBeginning ASCII mode game.\n\n");
+        gameinfo_print(gameinfo);
 
 
-    /* Does the computer play first?  If so, make a move. */
-    if (gameinfo->computer_player == gameinfo->to_move)
-      state = computer_move(gameinfo, &passes);
+        /* Does the computer play first?  If so, make a move. */
+        if (gameinfo->computer_player == gameinfo->to_move)
+            state = computer_move(gameinfo, &passes);
 
 
-    /* main ASCII Play loop */
-    while (state == 0) {
-      /* Display game board. */
-      if (opt_showboard)
-       ascii_showboard();
+        /* main ASCII Play loop */
+        while (state == 0) {
+            /* Display game board. */
+            if (opt_showboard)
+                ascii_showboard();
 
 #if !READLINE
 
 #if !READLINE
-      /* Print the prompt */
-      mprintf("%s(%d): ", color_to_string(gameinfo->to_move), movenum + 1);
+            /* Print the prompt */
+            mprintf("%s(%d): ", color_to_string(gameinfo->to_move), movenum + 1);
 
 
-      /* Read a line of input. */
-      line_ptr = line;
-      if (!fgets(line, 80, stdin))
-       return;
+            /* Read a line of input. */
+            line_ptr = line;
+            if (!fgets(line, 80, stdin))
+                return;
 #else
 #else
-      snprintf(line, 79, "%s(%d): ",
-              color_to_string(gameinfo->to_move), movenum + 1);
-      if (!(line_ptr = readline(line)))
-       return;
+            snprintf(line, 79, "%s(%d): ",
+                color_to_string(gameinfo->to_move), movenum + 1);
+            if (!(line_ptr = readline(line)))
+                return;
 
 
-      add_history(line_ptr);
+            add_history(line_ptr);
 #endif
 
 #endif
 
-      while (state == 0
-            && (command = strtok(line_ptr, ";"), line_ptr = 0, command)) {
-       /* Get the command or move. */
-       switch (get_command(command)) {
-       case RESIGN:
-         state = ascii_endgame(gameinfo, 1);
-         break;
-
-       case END:
-       case EXIT:
-       case QUIT:
-         return;
-
-       case HELP:
-         show_commands();
-         break;
-
-       case CMD_HELPDEBUG:
-         printf(DEBUG_COMMANDS);
-         break;
-
-       case SHOWBOARD:
-         opt_showboard = !opt_showboard;
-         break;
-
-       case INFO:
-         printf("\n");
-         gameinfo_print(gameinfo);
-         break;
-
-       case SETBOARDSIZE:
-         if (sgf_initialized) {
-           printf("Boardsize cannot be changed after record is started!\n");
-           break;
-         }
-         command += 10;
-         if (sscanf(command, "%d", &num) != 1) {
-           printf("\nInvalid command syntax!\n");
-           break;
-         }
-         if (!check_boardsize(num, stdout))
-           break;
-         /* Init board. */
-         board_size = num;
-         clear_board();
-         /* In case max handicap changes on smaller board. */
-         gameinfo->handicap = place_fixed_handicap(gameinfo->handicap);
-         sgfOverwritePropertyInt(sgftree.root, "SZ", board_size);
-         sgfOverwritePropertyInt(sgftree.root, "HA", gameinfo->handicap);
-         break;
-
-       case SETHANDICAP:
-         if (sgf_initialized) {
-           printf("Handicap cannot be changed after game is started!\n");
-           break;
-         }
-         command += 9;
-         if (sscanf(command, "%d", &num) != 1) {
-           printf("\nInvalid command syntax!\n");
-           break;
-         }
-         if (num < 0 || num > MAX_HANDICAP) {
-           printf("\nInvalid handicap: %d\n", num);
-           break;
-         }
-         /* Init board. */
-         clear_board();
-         /* Place stones on board but don't record sgf 
+            while (state == 0
+                && (command = strtok(line_ptr, ";"), line_ptr = 0, command)) {
+                /* Get the command or move. */
+                switch (get_command(command)) {
+                case RESIGN:
+                    state = ascii_endgame(gameinfo, 1);
+                    break;
+
+                case END:
+                case EXIT:
+                case QUIT:
+                    return;
+
+                case HELP:
+                    show_commands();
+                    break;
+
+                case CMD_HELPDEBUG:
+                    printf(DEBUG_COMMANDS);
+                    break;
+
+                case SHOWBOARD:
+                    opt_showboard = !opt_showboard;
+                    break;
+
+                case INFO:
+                    printf("\n");
+                    gameinfo_print(gameinfo);
+                    break;
+
+                case SETBOARDSIZE:
+                    if (sgf_initialized) {
+                        printf("Boardsize cannot be changed after record is started!\n");
+                        break;
+                    }
+                    command += 10;
+                    if (sscanf(command, "%d", &num) != 1) {
+                        printf("\nInvalid command syntax!\n");
+                        break;
+                    }
+                    if (!check_boardsize(num, stdout))
+                        break;
+                    /* Init board. */
+                    board_size = num;
+                    clear_board();
+                    /* In case max handicap changes on smaller board. */
+                    gameinfo->handicap = place_fixed_handicap(gameinfo->handicap);
+                    sgfOverwritePropertyInt(sgftree.root, "SZ", board_size);
+                    sgfOverwritePropertyInt(sgftree.root, "HA", gameinfo->handicap);
+                    break;
+
+                case SETHANDICAP:
+                    if (sgf_initialized) {
+                        printf("Handicap cannot be changed after game is started!\n");
+                        break;
+                    }
+                    command += 9;
+                    if (sscanf(command, "%d", &num) != 1) {
+                        printf("\nInvalid command syntax!\n");
+                        break;
+                    }
+                    if (num < 0 || num > MAX_HANDICAP) {
+                        printf("\nInvalid handicap: %d\n", num);
+                        break;
+                    }
+                    /* Init board. */
+                    clear_board();
+                    /* Place stones on board but don't record sgf 
           * in case we change more info. */
           * in case we change more info. */
-         gameinfo->handicap = place_fixed_handicap(num);
-         printf("\nSet handicap to %d\n", gameinfo->handicap);
-          gameinfo->to_move = (gameinfo->handicap ? WHITE : BLACK);
-         break;
-
-       case FREEHANDICAP:
-         if (sgf_initialized) {
-           printf("Handicap cannot be changed after game is started!\n");
-           break;
-         }
-         while (*command && *command != ' ')
-           command++;
-         ascii_free_handicap(gameinfo, command);
-         break;
-
-       case SETKOMI:
-         if (sgf_initialized) {
-           printf("Komi cannot be modified after game record is started!\n");
-           break;
-         }
-         command += 5;
-         if (sscanf(command, "%f", &fnum) != 1) {
-           printf("\nInvalid command syntax!\n");
-           break;
-         }
-         komi = fnum;
-         printf("\nSet Komi to %.1f\n", komi);
-         break;
-
-       case SETDEPTH:
-         command += 6;
-         if (sscanf(command, "%d", &num) != 1) {
-           printf("\nInvalid command syntax!\n");
-           break;
-         }
-         mandated_depth = num;
-         printf("\nSet depth to %d\n", mandated_depth);
-         break;
-
-       case SETLEVEL:
-         command += 6;
-         if (sscanf(command, "%d", &num) != 1) {
-           printf("\nInvalid command syntax!\n");
-           break;
-         }
-         set_level(num);
-         printf("\nSet level to %d\n", num);
-         break;
-
-       case DISPLAY:
-         if (!opt_showboard)
-           ascii_showboard();
-         break;
-
-       case FORCE:
-         command += 6; /* skip the force part... */
-         switch (get_command(command)) {
-         case MOVE:
-           state = do_move(gameinfo, command, &passes, 1);
-           break;
-         case PASS:
-           state = do_pass(gameinfo, &passes, 1);
-           break;
-         default:
-           printf("Illegal forced move: %s %d\n", command,
-                  get_command(command));
-           break;
-         }
-         break;
-
-       case MOVE:
-         state = do_move(gameinfo, command, &passes, 0);
-         break;
-
-       case PASS:
-         state = do_pass(gameinfo, &passes, 0);
-         break;
-
-       case PLAY:
-         command += 5;
-         if (sscanf(command, "%d", &num) != 1) {
-           printf("\nInvalid command syntax!\n");
-           break;
-         }
-         if (num >= 0)
-           for (m = 0; m < num; m++) {
-             gameinfo->computer_player 
-               = OTHER_COLOR(gameinfo->computer_player);
-             state = computer_move(gameinfo, &passes);
-             if (state)
-               break;
-             if (passes >= 2)
-               break;
-           }
-         else {
-           printf("\nInvalid number of moves specified: %d\n", num);
-           break;
-         }
-         break;
-
-       case PLAYBLACK:
-         if (gameinfo->computer_player == WHITE)
-           gameinfo->computer_player = BLACK;
-         if (gameinfo->computer_player == gameinfo->to_move)
-           state = computer_move(gameinfo, &passes);
-         break;
-
-       case PLAYWHITE:
-         if (gameinfo->computer_player == BLACK)
-           gameinfo->computer_player = WHITE;
-         if (gameinfo->computer_player == gameinfo->to_move)
-           state = computer_move(gameinfo, &passes);
-         break;
-
-       case SWITCH:
-         gameinfo->computer_player = OTHER_COLOR(gameinfo->computer_player);
-         state = computer_move(gameinfo, &passes);
-         break;
-
-       case UNDO:
-       case CMD_BACK:
-         if (undo_move(1)) {
-            sgftreeAddComment(&sgftree, "undone");
-           sgftreeBack(&sgftree);
-           gameinfo->to_move = OTHER_COLOR(gameinfo->to_move);
-         }
-         else
-           printf("\nCan't undo.\n");
-         break;
-
-       case CMD_FORWARD:
-         if (sgftreeForward(&sgftree))
-           gameinfo->to_move = gnugo_play_sgfnode(sgftree.lastnode,
-                                                 gameinfo->to_move);
-         else
-           printf("\nEnd of game tree.\n");
-         break;
-
-       case CMD_LAST:
-         while (sgftreeForward(&sgftree))
-           gameinfo->to_move = gnugo_play_sgfnode(sgftree.lastnode,
-                                                 gameinfo->to_move);
-         break;
-
-       case COMMENT:
-         printf("\nEnter comment. Press ENTER when ready.\n");
-         fgets(line, 80, stdin);
-         sgftreeAddComment(&sgftree, line);
-         break;
-
-       case SCORE:
-         showscore = !showscore;
-         if (!showscore)
-           current_score_estimate = NO_SCORE;
-         break;
-
-       case CMD_DEAD:
-         silent_examine_position(FULL_EXAMINE_DRAGONS);
-         showdead = !showdead;
-         break;
-
-       case CMD_CAPTURE:
-         strtok(command, " ");
-         showcapture(strtok(NULL, " "));
-         break;
-
-       case CMD_DEFEND:
-         strtok(command, " ");
-         showdefense(strtok(NULL, " "));
-         break;
-
-       case CMD_SHOWMOYO:
-         tmp = printmoyo;
-         printmoyo = PRINTMOYO_MOYO;
-         silent_examine_position(EXAMINE_DRAGONS);
-         printmoyo = tmp;
-         break;
-
-       case CMD_SHOWTERRI:
-         tmp = printmoyo;
-         printmoyo = PRINTMOYO_TERRITORY;
-         silent_examine_position(EXAMINE_DRAGONS);
-         printmoyo = tmp;
-         break;
-
-       case CMD_SHOWAREA:
-         tmp = printmoyo;
-         printmoyo = PRINTMOYO_AREA;
-         silent_examine_position(EXAMINE_DRAGONS);
-         printmoyo = tmp;
-         break;
-
-       case CMD_SHOWDRAGONS:
-         silent_examine_position(EXAMINE_DRAGONS);
-         showboard(1);
-         break;
-
-       case CMD_GOTO:
-         strtok(command, " ");
-         ascii_goto(gameinfo, strtok(NULL, " "));
-         break;
-
-       case CMD_SAVE:
-         strtok(command, " ");
-         tmpstring = strtok(NULL, " ");
-         if (tmpstring) {
-           /* discard newline */
-           tmpstring[strlen(tmpstring) - 1] = 0;
-           /* make sure we are saving proper handicap */
-           init_sgf(gameinfo);
-           writesgf(sgftree.root, tmpstring);
-           printf("You may resume the game");
-           printf(" with -l %s --mode ascii\n", tmpstring);
-           printf("or load %s\n", tmpstring);
-         }
-         else
-           printf("Please specify filename\n");
-         break;
-
-       case CMD_LOAD:
-         strtok(command, " ");
-         tmpstring = strtok(NULL, " ");
-         if (tmpstring) {
-           /* discard newline */
-           tmpstring[strlen(tmpstring) - 1] = 0;
-           if (!sgftree_readfile(&sgftree, tmpstring)) {
-             fprintf(stderr, "Cannot open or parse '%s'\n", tmpstring);
-             break;
-           }
-            /* to avoid changing handicap etc. */
-           if (gameinfo_play_sgftree(gameinfo, &sgftree, NULL) == EMPTY)
-             fprintf(stderr, "Cannot load '%s'\n", tmpstring);
-           else {
-             sgf_initialized = 1;
-             sgfOverwritePropertyInt(sgftree.root, "HA", gameinfo->handicap);
-           }
-         }
-         else
-           printf("Please specify a filename\n");
-         break;
-
-       case CMD_LISTDRAGONS:
-         silent_examine_position(EXAMINE_DRAGONS);
-         show_dragons();
-         break;
-
-       default:
-         printf("\nInvalid command: %s", command);
-         break;
-       }
-
-       if (passes >= 2)
-         state = ascii_endgame(gameinfo, 0);
-      }
+                    gameinfo->handicap = place_fixed_handicap(num);
+                    printf("\nSet handicap to %d\n", gameinfo->handicap);
+                    gameinfo->to_move = (gameinfo->handicap ? WHITE : BLACK);
+                    break;
+
+                case FREEHANDICAP:
+                    if (sgf_initialized) {
+                        printf("Handicap cannot be changed after game is started!\n");
+                        break;
+                    }
+                    while (*command && *command != ' ')
+                        command++;
+                    ascii_free_handicap(gameinfo, command);
+                    break;
+
+                case SETKOMI:
+                    if (sgf_initialized) {
+                        printf("Komi cannot be modified after game record is started!\n");
+                        break;
+                    }
+                    command += 5;
+                    if (sscanf(command, "%f", &fnum) != 1) {
+                        printf("\nInvalid command syntax!\n");
+                        break;
+                    }
+                    komi = fnum;
+                    printf("\nSet Komi to %.1f\n", komi);
+                    break;
+
+                case SETDEPTH:
+                    command += 6;
+                    if (sscanf(command, "%d", &num) != 1) {
+                        printf("\nInvalid command syntax!\n");
+                        break;
+                    }
+                    mandated_depth = num;
+                    printf("\nSet depth to %d\n", mandated_depth);
+                    break;
+
+                case SETLEVEL:
+                    command += 6;
+                    if (sscanf(command, "%d", &num) != 1) {
+                        printf("\nInvalid command syntax!\n");
+                        break;
+                    }
+                    set_level(num);
+                    printf("\nSet level to %d\n", num);
+                    break;
+
+                case DISPLAY:
+                    if (!opt_showboard)
+                        ascii_showboard();
+                    break;
+
+                case FORCE:
+                    command += 6; /* skip the force part... */
+                    switch (get_command(command)) {
+                    case MOVE:
+                        state = do_move(gameinfo, command, &passes, 1);
+                        break;
+                    case PASS:
+                        state = do_pass(gameinfo, &passes, 1);
+                        break;
+                    default:
+                        printf("Illegal forced move: %s %d\n", command,
+                            get_command(command));
+                        break;
+                    }
+                    break;
+
+                case MOVE:
+                    state = do_move(gameinfo, command, &passes, 0);
+                    break;
+
+                case PASS:
+                    state = do_pass(gameinfo, &passes, 0);
+                    break;
+
+                case PLAY:
+                    command += 5;
+                    if (sscanf(command, "%d", &num) != 1) {
+                        printf("\nInvalid command syntax!\n");
+                        break;
+                    }
+                    if (num >= 0)
+                        for (m = 0; m < num; m++) {
+                            gameinfo->computer_player
+                                = OTHER_COLOR(gameinfo->computer_player);
+                            state = computer_move(gameinfo, &passes);
+                            if (state)
+                                break;
+                            if (passes >= 2)
+                                break;
+                        }
+                    else {
+                        printf("\nInvalid number of moves specified: %d\n", num);
+                        break;
+                    }
+                    break;
+
+                case PLAYBLACK:
+                    if (gameinfo->computer_player == WHITE)
+                        gameinfo->computer_player = BLACK;
+                    if (gameinfo->computer_player == gameinfo->to_move)
+                        state = computer_move(gameinfo, &passes);
+                    break;
+
+                case PLAYWHITE:
+                    if (gameinfo->computer_player == BLACK)
+                        gameinfo->computer_player = WHITE;
+                    if (gameinfo->computer_player == gameinfo->to_move)
+                        state = computer_move(gameinfo, &passes);
+                    break;
+
+                case SWITCH:
+                    gameinfo->computer_player = OTHER_COLOR(gameinfo->computer_player);
+                    state = computer_move(gameinfo, &passes);
+                    break;
+
+                case UNDO:
+                case CMD_BACK:
+                    if (undo_move(1)) {
+                        sgftreeAddComment(&sgftree, "undone");
+                        sgftreeBack(&sgftree);
+                        gameinfo->to_move = OTHER_COLOR(gameinfo->to_move);
+                    } else
+                        printf("\nCan't undo.\n");
+                    break;
+
+                case CMD_FORWARD:
+                    if (sgftreeForward(&sgftree))
+                        gameinfo->to_move = gnugo_play_sgfnode(sgftree.lastnode,
+                            gameinfo->to_move);
+                    else
+                        printf("\nEnd of game tree.\n");
+                    break;
+
+                case CMD_LAST:
+                    while (sgftreeForward(&sgftree))
+                        gameinfo->to_move = gnugo_play_sgfnode(sgftree.lastnode,
+                            gameinfo->to_move);
+                    break;
+
+                case COMMENT:
+                    printf("\nEnter comment. Press ENTER when ready.\n");
+                    fgets(line, 80, stdin);
+                    sgftreeAddComment(&sgftree, line);
+                    break;
+
+                case SCORE:
+                    showscore = !showscore;
+                    if (!showscore)
+                        current_score_estimate = NO_SCORE;
+                    break;
+
+                case CMD_DEAD:
+                    silent_examine_position(FULL_EXAMINE_DRAGONS);
+                    showdead = !showdead;
+                    break;
+
+                case CMD_CAPTURE:
+                    strtok(command, " ");
+                    showcapture(strtok(NULL, " "));
+                    break;
+
+                case CMD_DEFEND:
+                    strtok(command, " ");
+                    showdefense(strtok(NULL, " "));
+                    break;
+
+                case CMD_SHOWMOYO:
+                    tmp = printmoyo;
+                    printmoyo = PRINTMOYO_MOYO;
+                    silent_examine_position(EXAMINE_DRAGONS);
+                    printmoyo = tmp;
+                    break;
+
+                case CMD_SHOWTERRI:
+                    tmp = printmoyo;
+                    printmoyo = PRINTMOYO_TERRITORY;
+                    silent_examine_position(EXAMINE_DRAGONS);
+                    printmoyo = tmp;
+                    break;
+
+                case CMD_SHOWAREA:
+                    tmp = printmoyo;
+                    printmoyo = PRINTMOYO_AREA;
+                    silent_examine_position(EXAMINE_DRAGONS);
+                    printmoyo = tmp;
+                    break;
+
+                case CMD_SHOWDRAGONS:
+                    silent_examine_position(EXAMINE_DRAGONS);
+                    showboard(1);
+                    break;
+
+                case CMD_GOTO:
+                    strtok(command, " ");
+                    ascii_goto(gameinfo, strtok(NULL, " "));
+                    break;
+
+                case CMD_SAVE:
+                    strtok(command, " ");
+                    tmpstring = strtok(NULL, " ");
+                    if (tmpstring) {
+                        /* discard newline */
+                        tmpstring[strlen(tmpstring) - 1] = 0;
+                        /* make sure we are saving proper handicap */
+                        init_sgf(gameinfo);
+                        writesgf(sgftree.root, tmpstring);
+                        printf("You may resume the game");
+                        printf(" with -l %s --mode ascii\n", tmpstring);
+                        printf("or load %s\n", tmpstring);
+                    } else
+                        printf("Please specify filename\n");
+                    break;
+
+                case CMD_LOAD:
+                    strtok(command, " ");
+                    tmpstring = strtok(NULL, " ");
+                    if (tmpstring) {
+                        /* discard newline */
+                        tmpstring[strlen(tmpstring) - 1] = 0;
+                        if (!sgftree_readfile(&sgftree, tmpstring)) {
+                            fprintf(stderr, "Cannot open or parse '%s'\n", tmpstring);
+                            break;
+                        }
+                        /* to avoid changing handicap etc. */
+                        if (gameinfo_play_sgftree(gameinfo, &sgftree, NULL) == EMPTY)
+                            fprintf(stderr, "Cannot load '%s'\n", tmpstring);
+                        else {
+                            sgf_initialized = 1;
+                            sgfOverwritePropertyInt(sgftree.root, "HA", gameinfo->handicap);
+                        }
+                    } else
+                        printf("Please specify a filename\n");
+                    break;
+
+                case CMD_LISTDRAGONS:
+                    silent_examine_position(EXAMINE_DRAGONS);
+                    show_dragons();
+                    break;
+
+                default:
+                    printf("\nInvalid command: %s", command);
+                    break;
+                }
+
+                if (passes >= 2)
+                    state = ascii_endgame(gameinfo, 0);
+            }
 #if READLINE
 #if READLINE
-       free(line_ptr);
+            free(line_ptr);
 #endif
 #endif
+        }
 
 
-    }
+        sgffile_output(&sgftree);
+        passes = 0;
 
 
-    sgffile_output(&sgftree);
-    passes = 0;
-    
-    /* Play a different game next time. */
-    update_random_seed();
-
-    /* Free the sgf tree and prepare for a new game. */
-    sgfFreeNode(sgftree.root);
-    sgftree_clear(&sgftree);
-    sgftreeCreateHeaderNode(&sgftree, board_size, komi, gameinfo->handicap);
-    sgf_initialized = 0;
-
-    gameinfo_clear(gameinfo);
-  }
-}
+        /* Play a different game next time. */
+        update_random_seed();
+
+        /* Free the sgf tree and prepare for a new game. */
+        sgfFreeNode(sgftree.root);
+        sgftree_clear(&sgftree);
+        sgftreeCreateHeaderNode(&sgftree, board_size, komi, gameinfo->handicap);
+        sgf_initialized = 0;
 
 
+        gameinfo_clear(gameinfo);
+    }
+}
 
 /* Communicates with user after a game has ended. */
 static int
 
 /* Communicates with user after a game has ended. */
 static int
-ascii_endgame(Gameinfo *gameinfo, int reason)
+ascii_endgame(Gameinfogameinfo, int reason)
 {
 {
-  char line[80];
-  char *line_ptr;
-  char *command;
-  char *tmpstring;
-  int state = 0;
+    char line[80];
+    char* line_ptr;
+    char* command;
+    char* tmpstring;
+    int state = 0;
+
+    if (reason == 0) { /* Two passes, game is over. */
+        who_wins(gameinfo->computer_player, stdout);
+        printf("\nIf you disagree, we may count the game together.\n");
+
+        sgftreeWriteResult(&sgftree, (white_score + black_score) / 2.0, 1);
+    } else {
+        int color = OTHER_COLOR(gameinfo->to_move);
+
+        if (reason == 1) /* Our opponent has resigned. */
+            printf("GNU Go wins by resignation.\n");
+        else /* We have resigned. */
+            printf("You win by resignation.\n");
+
+        printf("Result: %c+Resign\n\n", color == WHITE ? 'W' : 'B');
+        sgftreeWriteResult(&sgftree, color == WHITE ? 1000.0 : -1000.0, 1);
+    }
 
 
-  if (reason == 0) {           /* Two passes, game is over. */
-    who_wins(gameinfo->computer_player, stdout);
-    printf("\nIf you disagree, we may count the game together.\n");
-
-    sgftreeWriteResult(&sgftree, (white_score + black_score)/2.0, 1);
-  }
-  else {
-    int color = OTHER_COLOR(gameinfo->to_move);
-
-    if (reason == 1)           /* Our opponent has resigned. */
-      printf("GNU Go wins by resignation.\n");
-    else                       /* We have resigned. */
-      printf("You win by resignation.\n");
-
-    printf("Result: %c+Resign\n\n", color == WHITE ? 'W' : 'B');
-    sgftreeWriteResult(&sgftree, color == WHITE ? 1000.0 : -1000.0, 1);
-  }
-
-  while (state == 0) {
-    printf("You may optionally save the game as an SGF file.\n\n");
-    printf("Type \"save <filename>\" to save,\n");
-    if (reason == 0)
-      printf("     \"count\" to recount,\n");
-    else if (reason == 2)
-      printf("     \"continue\" to decline resignation and continue the game,\n");
-    printf("     \"quit\" to quit\n");
-    printf(" or  \"game\" to play again\n");
-
-    line_ptr = line;
-    if (!fgets(line, 80, stdin))
-      break;
-
-    command = strtok(line_ptr, "");
-    switch (get_command(command)) {
-    case CMD_SAVE:
-      strtok(command, " ");
-      tmpstring = strtok(NULL, " ");
-      if (tmpstring) {
-       /* discard newline */
-       tmpstring[strlen(tmpstring) - 1] = 0;
-       init_sgf(gameinfo);
-       writesgf(sgftree.root, tmpstring);
-      }
-      else
-       printf("Please specify filename\n");
-      break;
-
-    case COUNT:
-      if (reason == 0)
-       ascii_count(gameinfo);
-      break;
-
-    case CONTINUE:
-      state = -1;
-      break;
-
-    case NEW:
-      state = 1;
-      break;
-
-    case QUIT:
-      state = 2;
-      break;
-
-    default:
-      state = 0;
+    while (state == 0) {
+        printf("You may optionally save the game as an SGF file.\n\n");
+        printf("Type \"save <filename>\" to save,\n");
+        if (reason == 0)
+            printf("     \"count\" to recount,\n");
+        else if (reason == 2)
+            printf("     \"continue\" to decline resignation and continue the game,\n");
+        printf("     \"quit\" to quit\n");
+        printf(" or  \"game\" to play again\n");
+
+        line_ptr = line;
+        if (!fgets(line, 80, stdin))
+            break;
+
+        command = strtok(line_ptr, "");
+        switch (get_command(command)) {
+        case CMD_SAVE:
+            strtok(command, " ");
+            tmpstring = strtok(NULL, " ");
+            if (tmpstring) {
+                /* discard newline */
+                tmpstring[strlen(tmpstring) - 1] = 0;
+                init_sgf(gameinfo);
+                writesgf(sgftree.root, tmpstring);
+            } else
+                printf("Please specify filename\n");
+            break;
+
+        case COUNT:
+            if (reason == 0)
+                ascii_count(gameinfo);
+            break;
+
+        case CONTINUE:
+            state = -1;
+            break;
+
+        case NEW:
+            state = 1;
+            break;
+
+        case QUIT:
+            state = 2;
+            break;
+
+        default:
+            state = 0;
+        }
     }
     }
-  }
 
 
-  return state;
+    return state;
 }
 
 }
 
-
 /* ascii_count() scores the game.
  */
 static void
 /* ascii_count() scores the game.
  */
 static void
-ascii_count(Gameinfo *gameinfo)
+ascii_count(Gameinfogameinfo)
 {
 {
-  char line[12];
-  int done = 0;
-  int i;
-  int xyzzy = 1;
-  
-  printf("\nGame over. Let's count!.\n");  
-  showdead = 1;
-  ascii_showboard();
-  while (!done) {
-    printf("Dead stones are marked with small letters (x,o).\n");
-    printf("\nIf you don't agree, enter the location of a group\n");
-    printf("to toggle its state or \"done\".\n");
-
-    if (!fgets(line, 12, stdin))
-      return; /* EOF or some error */
-    
-    for (i = 0; i < 12; i++)
-      line[i] = tolower((int) line[i]);
-    if (!strncmp(line, "done", 4))
-      done = 1;
-    else if (!strncmp(line, "quit", 4))
-      return;
-    else if (!strncmp(line, "xyzzy", 5)) {
-      if (xyzzy) {
-       printf("\nYou are in a debris room filled with stuff washed in from the\n");
-       printf("surface.  A low wide passage with cobbles becomes plugged\n");
-       printf("with mud and debris here, but an awkward canyon leads\n");
-       printf("upward and west.  A note on the wall says:\n");
-       printf("   Magic Word \"XYZZY\"\n\n");
-       xyzzy = 0;
-      }
-      else {
-       printf("You are inside a building, a well house for a large spring.\n\n");
-       xyzzy = 1;
-      }
-    }
-    else if (!strncmp(line, "help", 4)) {
-      printf("\nIf there are dead stones on the board I will remove them.\n");
-      printf("You must tell me where they are. Type the coordinates of a\n");
-      printf("dead group, or type \"done\"\n");
-    }      
-    else if (!strncmp(line, "undo", 4)) {
-      printf("UNDO not allowed anymore. The status of the stones now\n");
-      printf("toggles after entering the location of it.\n");
-      ascii_showboard();
-    }
-    else {
-      int pos = string_to_location(board_size, line);
-      if (pos == NO_MOVE || board[pos] == EMPTY)
-       printf("\ninvalid!\n");
-      else {
-       enum dragon_status status = dragon_status(pos);
-       status = (status == DEAD) ? ALIVE : DEAD;
-       change_dragon_status(pos, status);
-       ascii_showboard();
-      }
+    char line[12];
+    int done = 0;
+    int i;
+    int xyzzy = 1;
+
+    printf("\nGame over. Let's count!.\n");
+    showdead = 1;
+    ascii_showboard();
+    while (!done) {
+        printf("Dead stones are marked with small letters (x,o).\n");
+        printf("\nIf you don't agree, enter the location of a group\n");
+        printf("to toggle its state or \"done\".\n");
+
+        if (!fgets(line, 12, stdin))
+            return; /* EOF or some error */
+
+        for (i = 0; i < 12; i++)
+            line[i] = tolower((int)line[i]);
+        if (!strncmp(line, "done", 4))
+            done = 1;
+        else if (!strncmp(line, "quit", 4))
+            return;
+        else if (!strncmp(line, "xyzzy", 5)) {
+            if (xyzzy) {
+                printf("\nYou are in a debris room filled with stuff washed in from the\n");
+                printf("surface.  A low wide passage with cobbles becomes plugged\n");
+                printf("with mud and debris here, but an awkward canyon leads\n");
+                printf("upward and west.  A note on the wall says:\n");
+                printf("   Magic Word \"XYZZY\"\n\n");
+                xyzzy = 0;
+            } else {
+                printf("You are inside a building, a well house for a large spring.\n\n");
+                xyzzy = 1;
+            }
+        } else if (!strncmp(line, "help", 4)) {
+            printf("\nIf there are dead stones on the board I will remove them.\n");
+            printf("You must tell me where they are. Type the coordinates of a\n");
+            printf("dead group, or type \"done\"\n");
+        } else if (!strncmp(line, "undo", 4)) {
+            printf("UNDO not allowed anymore. The status of the stones now\n");
+            printf("toggles after entering the location of it.\n");
+            ascii_showboard();
+        } else {
+            int pos = string_to_location(board_size, line);
+            if (pos == NO_MOVE || board[pos] == EMPTY)
+                printf("\ninvalid!\n");
+            else {
+                enum dragon_status status = dragon_status(pos);
+                status = (status == DEAD) ? ALIVE : DEAD;
+                change_dragon_status(pos, status);
+                ascii_showboard();
+            }
+        }
     }
     }
-  }
-  who_wins(gameinfo->computer_player, stdout);
+    who_wins(gameinfo->computer_player, stdout);
 }
 
 }
 
-
 static void
 static void
-showcapture(char *line)
+showcapture(charline)
 {
 {
-  int str;
-  int move;
+    int str;
+    int move;
+
+    gg_assert(line);
+    str = string_to_location(board_size, line);
+    if (str == NO_MOVE || board[str] == EMPTY) {
+        printf("\ninvalid point!\n");
+        return;
+    }
 
 
-  gg_assert(line);
-  str = string_to_location(board_size, line);
-  if (str == NO_MOVE || board[str] == EMPTY) {
-    printf("\ninvalid point!\n");
-    return;
-  }
-  
-  if (attack(str, &move))
-    mprintf("\nSuccessful attack of %1m at %1m\n", str, move);
-  else
-    mprintf("\n%1m cannot be attacked\n", str);
+    if (attack(str, &move))
+        mprintf("\nSuccessful attack of %1m at %1m\n", str, move);
+    else
+        mprintf("\n%1m cannot be attacked\n", str);
 }
 
 }
 
-
 static void
 static void
-showdefense(char *line)
+showdefense(charline)
 {
 {
-  int str;
-  int move;
-  
-  gg_assert(line);
-  str = string_to_location(board_size, line);
-  if (str == NO_MOVE || board[str] == EMPTY) {
-    printf("\ninvalid point!\n");
-    return;
-  }
-
-  if (attack(str, NULL)) {
-      if (find_defense(str, &move))
-        mprintf("\nSuccessful defense of %1m at %1m\n", str, move);
-      else
-        mprintf("\n%1m cannot be defended\n", str);
+    int str;
+    int move;
+
+    gg_assert(line);
+    str = string_to_location(board_size, line);
+    if (str == NO_MOVE || board[str] == EMPTY) {
+        printf("\ninvalid point!\n");
+        return;
     }
     }
-    else
-      mprintf("\nThere is no need to defend %1m\n", str);
-}
 
 
+    if (attack(str, NULL)) {
+        if (find_defense(str, &move))
+            mprintf("\nSuccessful defense of %1m at %1m\n", str, move);
+        else
+            mprintf("\n%1m cannot be defended\n", str);
+    } else
+        mprintf("\nThere is no need to defend %1m\n", str);
+}
 
 static void
 
 static void
-ascii_goto(Gameinfo *gameinfo, char *line)
+ascii_goto(Gameinfo* gameinfo, char* line)
 {
 {
-  const char *movenumber = line;
+    const char* movenumber = line;
 
 
-  if (!line)
-    return;
-  
-  if (!strncmp(line, "last", 4))
-    movenumber = "9999";
-  else if (!strncmp(line, "first", 4))
-    movenumber = "1";
-  
-  printf("goto %s\n", movenumber);
-  gameinfo_play_sgftree(gameinfo, &sgftree, movenumber);
-}
+    if (!line)
+        return;
 
 
+    if (!strncmp(line, "last", 4))
+        movenumber = "9999";
+    else if (!strncmp(line, "first", 4))
+        movenumber = "1";
+
+    printf("goto %s\n", movenumber);
+    gameinfo_play_sgftree(gameinfo, &sgftree, movenumber);
+}
 
 static void
 
 static void
-ascii_free_handicap(Gameinfo *gameinfo, char *handicap_string)
+ascii_free_handicap(Gameinfo* gameinfo, char* handicap_string)
 {
 {
-  int handi;
-  int i;
-  char line[80];
-  int stones[MAX_BOARD*MAX_BOARD];
-
-  if (sscanf(handicap_string, "%d", &handi) == 1) {
-    /* GNU Go is to place handicap */
-    if (handi < 0 || handi == 1) {
-      printf("\nInvalid command syntax!\n");
-      return;
-    }
+    int handi;
+    int i;
+    char line[80];
+    int stones[MAX_BOARD * MAX_BOARD];
+
+    if (sscanf(handicap_string, "%d", &handi) == 1) {
+        /* GNU Go is to place handicap */
+        if (handi < 0 || handi == 1) {
+            printf("\nInvalid command syntax!\n");
+            return;
+        }
 
 
-    clear_board();
-    handi = place_free_handicap(handi);
-    printf("\nPlaced %d stones of free handicap.\n", handi);
-  }
-  else { /* User is to place handicap */
-    clear_board();
-    handi = 0;
-
-    while (1) {
-      ascii_showboard();
-      printf("\nType in coordinates of next handicap stone, or one of the following commands:\n");
-      printf("  undo        take back the last stone placed\n");
-      printf("  clear       remove all the stones placed so far\n");
-      printf("  done        finish placing handicap\n\n");
-      printf("You have placed %d handicap stone(s) so far.\n\n", handi);
-
-      if (!fgets(line, 80, stdin))
-        return; /* EOF or some error */
-      for (i = 0; i < 80; i++)
-        line[i] = tolower((int) line[i]);
-
-      if (!strncmp(line, "undo", 4)) {
-        if (!handi)
-         printf("\nNothing to undo.\n");
-       else {
-         remove_stone(stones[--handi]);
-         gprintf("\nRemoved the stone at %m.\n", I(stones[handi]),
-                 J(stones[handi]));
-       }
-      }
-      else if (!strncmp(line, "clear", 5)) {
+        clear_board();
+        handi = place_free_handicap(handi);
+        printf("\nPlaced %d stones of free handicap.\n", handi);
+    } else { /* User is to place handicap */
         clear_board();
         handi = 0;
         clear_board();
         handi = 0;
-      }
-      else if (!strncmp(line, "done", 4)) {
-       if (handi == 1) /* Don't bother with checks later */
-         printf("\nHandicap cannot be one stone. Either add "
-                "some more, or delete the only stone.\n");
-       else
-         break;
-      }
-      else {
-       int pos = string_to_location(board_size, line);
-       if (pos != NO_MOVE) {
-         if (board[pos] != EMPTY)
-           printf("\nThere's already a stone there.\n");
-         else {
-           add_stone(pos, BLACK);
-           stones[handi++] = pos;
-         }
-       }
-       else
-         printf("\nInvalid command: %s", line);
-      }
+
+        while (1) {
+            ascii_showboard();
+            printf("\nType in coordinates of next handicap stone, or one of the following commands:\n");
+            printf("  undo        take back the last stone placed\n");
+            printf("  clear       remove all the stones placed so far\n");
+            printf("  done        finish placing handicap\n\n");
+            printf("You have placed %d handicap stone(s) so far.\n\n", handi);
+
+            if (!fgets(line, 80, stdin))
+                return; /* EOF or some error */
+            for (i = 0; i < 80; i++)
+                line[i] = tolower((int)line[i]);
+
+            if (!strncmp(line, "undo", 4)) {
+                if (!handi)
+                    printf("\nNothing to undo.\n");
+                else {
+                    remove_stone(stones[--handi]);
+                    gprintf("\nRemoved the stone at %m.\n", I(stones[handi]),
+                        J(stones[handi]));
+                }
+            } else if (!strncmp(line, "clear", 5)) {
+                clear_board();
+                handi = 0;
+            } else if (!strncmp(line, "done", 4)) {
+                if (handi == 1) /* Don't bother with checks later */
+                    printf("\nHandicap cannot be one stone. Either add "
+                           "some more, or delete the only stone.\n");
+                else
+                    break;
+            } else {
+                int pos = string_to_location(board_size, line);
+                if (pos != NO_MOVE) {
+                    if (board[pos] != EMPTY)
+                        printf("\nThere's already a stone there.\n");
+                    else {
+                        add_stone(pos, BLACK);
+                        stones[handi++] = pos;
+                    }
+                } else
+                    printf("\nInvalid command: %s", line);
+            }
+        }
     }
     }
-  }
-  gameinfo->handicap = handi;
-  gameinfo->to_move = (handi ? WHITE : BLACK);
+    gameinfo->handicap = handi;
+    gameinfo->to_move = (handi ? WHITE : BLACK);
 }
 
 }
 
-
 /*
  * Local Variables:
 /*
  * Local Variables:
- * tab-width: 8
- * c-basic-offset: 2
+ * tab-width: 4
+ * c-basic-offset: 4
  * End:
  */
  * End:
  */