--- ray/src/util/radcompare.c	2018/10/19 23:56:15	2.14
+++ ray/src/util/radcompare.c	2018/11/17 20:22:17	2.17
@@ -1,5 +1,5 @@
 #ifndef lint
-static const char RCSid[] = "$Id: radcompare.c,v 2.14 2018/10/19 23:56:15 greg Exp $";
+static const char RCSid[] = "$Id: radcompare.c,v 2.17 2018/11/17 20:22:17 greg Exp $";
 #endif
 /*
  * Compare Radiance files for significant differences
@@ -109,6 +109,8 @@ usage()
 static int
 read_line(LINEBUF *bp, FILE *fp)
 {
+	static int	doneWarn = 0;
+
 	bp->len = 0;
 	if (!bp->str) {
 		bp->str = (char *)malloc(bp->siz = 512);
@@ -121,8 +123,15 @@ read_line(LINEBUF *bp, FILE *fp)
 			break;		/* found EOL */
 		if (bp->len < bp->siz - 4)
 			continue;	/* at EOF? */
-		if (bp->siz >= MAXBUF)
-			break;		/* don't go to extremes */
+		if (bp->siz >= MAXBUF) {
+			if ((report >= REP_WARN) & !doneWarn) {
+				fprintf(stderr,
+			"%s: warning - input line(s) past %ld MByte limit\n",
+					progname, MAXBUF>>20);
+				doneWarn++;
+			}
+			break;		/* return MAXBUF partial line */
+		}
 		if ((bp->siz += bp->siz/2) > MAXBUF)
 			bp->siz = MAXBUF;
 		bp->str = (char *)realloc(bp->str, bp->siz);
@@ -190,8 +199,8 @@ color_check(COLOR c1, COLOR c2)
 {
 	int	p;
 
-	if (!real_check(colval(c1,RED)+colval(c1,GRN)+colval(c1,BLU)*(1./3.),
-			colval(c2,RED)+colval(c2,GRN)+colval(c2,BLU))*(1./3.))
+	if (!real_check((colval(c1,RED)+colval(c1,GRN)+colval(c1,BLU))*(1./3.),
+			(colval(c2,RED)+colval(c2,GRN)+colval(c2,BLU))*(1./3.)))
 		return(0);
 
 	p = (colval(c1,GRN) > colval(c1,RED)) ? GRN : RED;
@@ -768,13 +777,13 @@ main(int argc, char *argv[])
 	ign_header |= !has_header(typ1);	/* check headers if indicated */
 	if (!ign_header && !headers_match())
 		return(1);
-	lu_done(&hdr1); lu_done(&hdr2);
+	lu_done(&hdr1); lu_done(&hdr2);		/* done with header info. */
 	if (!ign_header & (report >= REP_WARN)) {
-		if (typ1 == TYP_UNKNOWN)
-			printf("%s: warning - unrecognized format, comparing as binary\n",
-					progname);
 		if (lin1cnt != lin2cnt)
 			printf("%s: warning - headers are different lengths\n",
+					progname);
+		if (typ1 == TYP_UNKNOWN)
+			printf("%s: warning - unrecognized format\n",
 					progname);
 	}
 	if (report >= REP_VERBOSE)