Define for generic usernames which prompt for name

Instead of hard-coding the "play", "player", etc. usernames
which will prompt the user for their name, allow defining
the names in config.h

include/config.h

@@ -316,6 +316,11 @@
 #endif /* CHDIR */
 
 
+/* If GENERIC_USERNAMES is defined, and the user name is found
+ * in that list, prompt for username instead.
+ * A public server should probably disable this. */
+#define GENERIC_USERNAMES "play player game games nethack nethacker"
+
 
 /*
  * Section 3:	Definitions that may vary with system type.

src/role.c

@@ -1332,12 +1332,15 @@ plnamesuffix()
     char *sptr, *eptr;
     int i;
 
+#ifdef GENERIC_USERNAMES
     /* some generic user names will be ignored in favor of prompting */
     i = (int)strlen(plname);
-    if ((i >= 4 && !strncmpi(plname, "player", i)) ||	    /* play[er] */
-	    (i >= 4 && !strncmpi(plname, "games", i)) ||	   /* game[s] */
-	    (i >= 7 && !strncmpi(plname, "nethacker", i)))  /* nethack[er] */
+    eptr = GENERIC_USERNAMES;
+    sptr = strstri(eptr, plname);
+    if (sptr && ((sptr == eptr && (sptr[i] == ' ' || sptr[i] == '\0'))
+		 || sptr[i] == ' ' || sptr[i] == '\0'))
 	*plname = '\0'; /* call askname() */
+#endif
 
     do {
 	if (!*plname) askname();	/* fill plname[] if necessary */