--- ray/src/common/loadvars.c	1996/04/19 09:09:28	2.4
+++ ray/src/common/loadvars.c	1998/07/09 10:47:59	2.8
@@ -32,7 +32,7 @@ char	*rfname;
 		fp = stdin;
 	else if ((fp = fopen(rfname, "r")) == NULL) {
 		perror(rfname);
-		exit(1);
+		quit(1);
 	}
 	while (fgetline(buf, sizeof(buf), fp) != NULL) {
 		for (cp = buf; *cp; cp++) {
@@ -48,14 +48,20 @@ char	*rfname;
 			}
 			break;
 		}
-		setvariable(buf);
+		if (setvariable(buf, matchvar) < 0) {
+			fprintf(stderr, "%s: unknown variable: %s\n",
+					rfname, buf);
+			quit(1);
+		}
 	}
 	fclose(fp);
 }
 
 
-setvariable(ass)		/* assign variable according to string */
+int
+setvariable(ass, mv)		/* assign variable according to string */
 register char	*ass;
+VARIABLE	*(*mv)();
 {
 	char	varname[32];
 	int	n;
@@ -71,27 +77,19 @@ register char	*ass;
 		*cp++ = *ass++;
 	*cp = '\0';
 	if (!varname[0])
-		return;		/* no variable name! */
+		return(0);	/* no variable name! */
 					/* trim value */
 	while (isspace(*ass) || *ass == '=')
 		ass++;
 	for (n = strlen(ass); n > 0; n--)
 		if (!isspace(ass[n-1]))
 			break;
-	if (!n) {
-		if (!nowarn)
-			fprintf(stderr,
-			"%s: warning - missing value for variable '%s'\n",
-					progname, varname);
-		return;
-	}
+	if (!n)
+		return(0);	/* no assignment */
 					/* match variable from list */
-	vp = matchvar(varname);
-	if (vp == NULL) {
-		fprintf(stderr, "%s: unknown variable '%s'\n",
-				progname, varname);
-		exit(1);
-	}
+	vp = (*mv)(varname);
+	if (vp == NULL)
+		return(-1);
 					/* assign new value */
 	if (i = vp->nass) {
 		cp = vp->value;
@@ -104,7 +102,7 @@ register char	*ass;
 		vp->value = malloc(n+1);
 	if (vp->value == NULL) {
 		perror(progname);
-		exit(1);
+		quit(1);
 	}
 	cp = vp->value+i;		/* copy value, squeezing spaces */
 	*cp = *ass;
@@ -118,7 +116,7 @@ register char	*ass;
 	}
 	if (isspace(*cp))		/* remove trailing space */
 		*cp = '\0';
-	vp->nass++;
+	return(++vp->nass);
 }
 
 
@@ -221,7 +219,7 @@ register VARIABLE	*vp;
 	}
 	fprintf(stderr, "%s: illegal value for boolean variable '%s'\n",
 			progname, vp->name);
-	exit(1);
+	quit(1);
 }
 
 
@@ -243,7 +241,7 @@ register VARIABLE	*vp;
 	}
 	fprintf(stderr, "%s: illegal value for qualitative variable '%s'\n",
 			progname, vp->name);
-	exit(1);
+	quit(1);
 }
 
 
@@ -255,7 +253,7 @@ register VARIABLE	*vp;
 	if (isint(vp->value)) return;
 	fprintf(stderr, "%s: illegal value for integer variable '%s'\n",
 			progname, vp->name);
-	exit(1);
+	quit(1);
 }
 
 
@@ -267,7 +265,7 @@ register VARIABLE	*vp;
 	if (isflt(vp->value)) return;
 	fprintf(stderr, "%s: illegal value for real variable '%s'\n",
 			progname, vp->name);
-	exit(1);
+	quit(1);
 }
 
 
@@ -281,23 +279,26 @@ register FILE	*fp;
 	    for (j = 0; j < vdef(i); j++) {	/* print each assignment */
 		fputs(vnam(i), fp);
 		fputs("= ", fp);
-		k = clipline = ( vv[i].fixval == catvalues ? 64 : 320 )
+		k = clipline = ( vv[i].fixval == catvalues ? 64 : 236 )
 				- strlen(vnam(i)) ;
 		cp = nvalue(i, j);
 		while (*cp) {
 		    putc(*cp++, fp);
 		    if (--k <= 0) {		/* line too long */
 			while (*cp && !isspace(*cp))
-			    putc(*cp++, fp);	/* finish this word */
+			    fputc(*cp++, fp);	/* finish this word */
 			if (*cp) {		/* start new line */
-			    putc('\n', fp);
-			    fputs(vnam(i), fp);
-			    putc('=', fp);
+			    if (vv[i].fixval == catvalues) {
+				fputc('\n', fp);
+				fputs(vnam(i), fp);
+				fputc('=', fp);
+			    } else
+				fputs(" \\\n", fp);
 			    k = clipline;
 			}
 		    }
 		}
-	        putc('\n', fp);
+	        fputc('\n', fp);
 	    }
 	fflush(fp);
 }