--- ray/src/util/rcode_norm.c	2019/07/19 02:18:44	2.1
+++ ray/src/util/rcode_norm.c	2019/08/13 16:31:35	2.3
@@ -1,5 +1,5 @@
 #ifndef lint
-static const char RCSid[] = "$Id: rcode_norm.c,v 2.1 2019/07/19 02:18:44 greg Exp $";
+static const char RCSid[] = "$Id: rcode_norm.c,v 2.3 2019/08/13 16:31:35 greg Exp $";
 #endif
 /*
  * Encode and decode surface normal map using 32-bit integers
@@ -22,10 +22,10 @@ usage_exit(int code)
 {
 	fputs("Usage: ", stderr);
 	fputs(progname, stderr);
-	fputs(" [-h[io]][-H[io]][-f[afd]] [input [output]]\n", stderr);
+	fputs(" [-h[io]][-H[io]][-f[afd]] [input [output.nrm]]\n", stderr);
 	fputs("   Or: ", stderr);
 	fputs(progname, stderr);
-	fputs(" -r [-i][-u][-h[io]][-H[io]][-f[afd]] [input [output]]\n",
+	fputs(" -r [-i][-u][-h[io]][-H[io]][-f[afd]] [input.nrm [output]]\n",
 			stderr);
 	exit(code);
 }
@@ -38,11 +38,11 @@ encode_normals(NORMCODEC *ncp)
 	long	nexpected = (long)ncp->res.xr * ncp->res.yr;
 
 	if (ncp->inpfmt[0]) {
-		if (strcasestr(ncp->inpfmt, "ascii") != NULL)
+		if (strstr(ncp->inpfmt, "ascii") != NULL)
 			ncp->format = 'a';
-		else if (strcasestr(ncp->inpfmt, "float") != NULL)
+		else if (strstr(ncp->inpfmt, "float") != NULL)
 			ncp->format = 'f';
-		else if (strcasestr(ncp->inpfmt, "double") != NULL)
+		else if (strstr(ncp->inpfmt, "double") != NULL)
 			ncp->format = 'd';
 		else {
 			fputs(ncp->inpname, stderr);
@@ -304,7 +304,7 @@ main(int argc, char *argv[])
 			fputs(": -i option requires input resolution\n", stderr);
 			usage_exit(1);
 		}
-		nc.hdrflags &= ~(HF_HEADOUT|HF_RESOUT);
+		nc.hdrflags &= ~HF_RESOUT;
 	}
 	if (a < argc-2) {
 		fputs(progname, stderr);