Remove default of disallowing null and option to allow it. Allow null is default and no option.

edef.h

@@ -82,7 +82,6 @@ extern char palstr[];		/* palette string               */
 extern int saveflag;		/* Flags, saved with the $target var */
 extern int rval;		/* return value of a subprocess */
 #if	PKCODE
-extern int nullflag;
 extern int justflag;		/* justify, don't fill */
 #endif
 extern int overlap;		/* line overlap in forw/back page */

globals.c

@@ -94,7 +94,6 @@ char palstr[49] = "";		/* palette string               */
 int saveflag = 0;		/* Flags, saved with the $target var */
 int rval = 0;			/* return value of a subprocess */
 #if	PKCODE
-int nullflag = FALSE;		/* accept null characters */
 int justflag = FALSE;		/* justify, don't fill */
 #endif
 int overlap = 0;		/* line overlap in forw/back page */

main.c

@@ -117,7 +117,6 @@ static void usage( void) {
 #if CRYPT
            "      -k|K<key>     use code key\n"
 #endif
-           "      -n|N          accept null chars\n"
            "      -r|R          restrictive use\n"
            "      -s|S<string>  search string\n"
            "      -v|V          view file\n"
@@ -221,12 +220,6 @@ int main(int argc, char **argv)
 				cryptflag = TRUE;
 				strcpy(ekey, &argv[carg][2]);
 				break;
-#endif
-#if	PKCODE
-			case 'n':	/* -n accept null chars */
-			case 'N':
-				nullflag = TRUE;
-				break;
 #endif
 			case 'r':	/* -r restrictive use */
 			case 'R':