--- main.c.orig	Fri Jan 26 21:31:22 2001
+++ main.c	Fri Dec 15 01:11:42 2006
@@ -49,11 +49,17 @@
  *
  * 4.0	Petri Kutvonen, 1-Sep-91
  *
- * 4.0  convert from Linux source code to FreeBSD.
- *      Added tabmask change option. (-T) tabsize 8 to 4.
- *	Added automatic .c file setup cmode. like OS-9 uEMacs.
- *      Tadashi Yumoto, 27-Jan-01
+ * 4.0      convert from Linux source code to FreeBSD.
+ *          Added tabmask change option. (-T) tabsize 8 to 4.
+ *          Added automatic .c file setup cmode. like OS-9 uEMacs.
+ *          Tadashi Yumoto, 27-Jan-01
+ * 4.0.17   added file access permission test in file.c.
+ *          Tadashi Yumoto, 14-Apr-01
  *
+ *          modified -t option for -t4 or -t or -t8 supported.
+ *			fixed bug in eval.c not set "tabsize".
+ *			added help message.
+ *			Tadashi Yumoto 30-Dec-01
  */
 
 #include        <stdio.h>
@@ -89,6 +95,19 @@
 #include <signal.h>
 #endif
 
+static int prtuse(char*);
+
+#if UNIX
+static void emergencyexit();
+#ifdef SIGWINCH
+extern void sizesignal();
+#endif
+#endif
+
+#if	defined(TOYCODE) && defined(BSD)
+#include	<sys/unistd.h>
+#include	<errno.h>
+#endif
 #if	CALLED
 emacs(argc, argv)
 #else
@@ -131,13 +150,6 @@
 	int sink;			/* for file name scan */
 #endif
 
-#if UNIX
-	static void emergencyexit();
-#ifdef SIGWINCH
-	extern void sizesignal();
-#endif
-#endif
-
 #if	PKCODE & VMS
 	(void) umask(-1);	/* use old protection (this is at wrong place) */
 #endif
@@ -225,9 +237,21 @@
 #if	TOYCODE
 				case 't':	/* -t for tabmask change */
 				case 'T':
-					tabmask = 0x03;
-					tabsize = 4;
-					break;
+				case 'x':
+				case 'X':
+					if ( argv[carg][2] == '4' || argv[carg][2] == NULL ) {
+						tabsize = 4;
+						tabmask = 0x03;
+					} else if ( argv[carg][2] == '8' ) {
+						tabmask = 0x07;
+					}
+					break;
+				case 'h': case 'H': case '?':
+					TTclose();
+					TTkclose();
+					vttidy();
+					prtuse(argv[0]);
+					exit(0);
 #endif
 				default:	/* unknown switch */
 					/* ignore this for now */
@@ -273,7 +297,11 @@
 			sink = strlen(argv[carg]);
 			if (sink >= 2 && (argv[carg][sink-2] == '.' &&
 				 (argv[carg][sink-1] == 'c' || argv[carg][sink-1] == 'h')))
-				bp->b_mode |= MDCMOD;
+				bp->b_mode |= gmode | MDCMOD;
+			/* for C++ */
+			if (sink >= 3 && (argv[carg][sink-3] == '.' &&
+				 (argv[carg][sink-2] == 'c' && argv[carg][sink-1] == 'c')))
+				bp->b_mode |= gmode | MDCMOD;
 #endif
 		}
 	}
@@ -769,7 +797,7 @@
 			ALWAYS null terminate
 */
 
-char *strncpy(dst, src, maxlen)
+char *mystrncpy(dst, src, maxlen)
 
 char *dst;	/* destination of copied string */
 char *src;	/* source */
@@ -913,5 +941,44 @@
 #undef	exit
 	exit(status);
 #endif
+}
+#endif
+
+#if TOYCODE
+static char	*helpmsg[] = {
+	"Description:\n",
+	"   Light-weight full screen editor.\n",
+#if PKCODE
+	"   use termcap but,\n",
+	"   em recognizes the size of the screen dynamically.\n",
+#endif
+	"\n",
+	"Options: upper/lower case handling same way.\n",
+	"   -a      ... process error file.\n",
+	"   -e      ... edit file.\n",
+	"   -g<n>   ... initial goto line <n>.\n",
+#if PKCODE
+	"   +g<n>   ... initial goto line <n>.\n",
+#endif
+#if CRYPT
+	"   -k<key> ... cryption.\n",
+#endif
+#if PKCODE
+	"   -n      ... accept null chars.\n",
+#endif
+    "   -r      ... restrictive use.\n",
+    "   -s<str> ... initial serarch string.\n",
+    "   -v      ... view file.\n",
+	"   -t<4/8> ... force tab width change to 4/8.\n",
+};
+
+static int prtuse(pname)
+char	*pname;
+{
+	char	**p = helpmsg,
+			**e = helpmsg + (sizeof (helpmsg) / (sizeof (char **)));
+
+	fprintf(stderr,"Syntax: %s {[<opt>] file ...}\n",pname);
+	while ( p < e ) fputs(*p++,stderr);
 }
 #endif