--- ray/src/common/header.c	2022/03/14 22:57:24	2.47
+++ ray/src/common/header.c	2025/06/07 05:09:45	2.51
@@ -1,5 +1,5 @@
 #ifndef lint
-static const char	RCSid[] = "$Id: header.c,v 2.47 2022/03/14 22:57:24 greg Exp $";
+static const char	RCSid[] = "$Id: header.c,v 2.51 2025/06/07 05:09:45 greg Exp $";
 #endif
 /*
  *  header.c - routines for reading and writing information headers.
@@ -12,7 +12,6 @@ static const char	RCSid[] = "$Id: header.c,v 2.47 2022
  *  gmtval(t,s)		get GMT as UTC
  *  fputdate(t,fp)	put out the given UTC
  *  fputnow(fp)		put out the current date and time
- *  printargs(ac,av,fp) print an argument list to fp, followed by '\n'
  *  formatval(r,s)	copy the format value in s to r
  *  fputformat(s,fp)	write "FORMAT=%s" to fp
  *  nativebigendian()	are we native on big-endian machine?
@@ -161,28 +160,6 @@ fputnow(			/* write out the current time */
 }
 
 
-void
-printargs(		/* print arguments to a file */
-	int  ac,
-	char  **av,
-	FILE  *fp
-)
-{
-#if defined(_WIN32) || defined(_WIN64)
-	extern char	*fixargv0(char *arg0);
-	char		myav0[128];
-				/* clean up Windows executable path */
-	if (ac-- <= 0) return;
-	fputs(fixargv0(strcpy(myav0, *av++)), fp);
-	fputc(ac ? ' ' : '\n', fp);
-#endif
-	while (ac-- > 0) {
-		fputword(*av++, fp);
-		fputc(ac ? ' ' : '\n', fp);
-	}
-}
-
-
 int
 formatval(			/* get format value (return true if format) */
 	char  fmt[MAXFMTLEN],
@@ -191,15 +168,20 @@ formatval(			/* get format value (return true if forma
 {
 	const char  *cp = FMTSTR;
 	char  *r = fmt;
-
+				/* check against format string */
 	while (*cp) if (*cp++ != *s++) return(0);
 	while (isspace(*s)) s++;
 	if (!*s) return(0);
-	if (r == NULL) return(1);
-	do
+	if (r == NULL)		/* just checking if format? */
+		return(1);
+	do			/* copy format ID */
 		*r++ = *s++;
-	while (*s && !isspace(*s) && r-fmt < MAXFMTLEN-1);
-	*r = '\0';
+	while (*s && r-fmt < MAXFMTLEN-1);
+
+	do			/* remove trailing white space */
+		*r-- = '\0';
+	while (r > fmt && isspace(*r));
+
 	return(1);
 }