--- ray/src/cv/mgflib/parser.h	1995/05/10 17:46:05	1.22
+++ ray/src/cv/mgflib/parser.h	1995/05/11 20:17:36	1.24
@@ -48,14 +48,20 @@
 
 extern char	mg_ename[MG_NENTITIES][MG_MAXELEN];
 
-			/* Handler routines for each entity */
+			/* Handler routines for each entity and unknown ones */
 
 #ifdef NOPROTO
 extern int	(*mg_ehand[MG_NENTITIES])();
+extern int	(*mg_uhand)();
+extern int	mg_defuhand();
 #else
 extern int	(*mg_ehand[MG_NENTITIES])(int argc, char **argv);
+extern int	(*mg_uhand)(int argc, char **argv);
+extern int	mg_defuhand(int, char **);
 #endif
 
+extern unsigned	mg_nunknown;		/* count of unknown entities */
+
 			/* Error codes */
 #define MG_OK		0		/* normal return value */
 #define MG_EUNK		1		/* unknown entity */
@@ -71,7 +77,7 @@ extern int	(*mg_ehand[MG_NENTITIES])(int argc, char **
 
 #define MG_NERRS	11
 
-extern char	*mg_err[MG_NERRS];
+extern char	*mg_err[MG_NERRS];	/* list of error messages */
 
 /*
  * The general process for running the parser is to fill in the mg_ehand
@@ -341,17 +347,21 @@ struct xf_array {
 
 typedef struct xf_spec {
 	long	xid;			/* unique transform id */
-	short	xav0;			/* zeroeth argument in xf_argv array */
-	short	xac;			/* transform argument count */
+	short	xac;			/* context argument count */
 	short	rev;			/* boolean true if vertices reversed */
 	XF	xf;			/* cumulative transformation */
 	struct xf_array	*xarr;		/* transformation array pointer */
 	struct xf_spec	*prev;		/* previous transformation context */
 } XF_SPEC;			/* followed by argument buffer */
 
-extern int	xf_argc;			/* total # transform args. */
-extern char	**xf_argv;			/* transform arguments */
-extern XF_SPEC	*xf_context;			/* current context */
+extern XF_SPEC	*xf_context;			/* current transform context */
+extern char	**xf_argend;			/* last transform argument */
+
+#define xf_ac(xf)	((xf)->xac)
+#define xf_av(xf)	(xf_argend - (xf)->xac)
+
+#define xf_argc		(xf_context==NULL ? 0 : xf_ac(xf_context))
+#define xf_argv		xf_av(xf_context)
 
 /*
  * The transformation handler should do most of the work that needs