From dc05a7c3c4b2329f6718cbd84cccce05e4107cad Mon Sep 17 00:00:00 2001
From: "Alex A. Naanou" <alex.nanou@gmail.com>
Date: Sat, 20 Nov 2021 00:26:26 +0300
Subject: [PATCH] better error checking...

Signed-off-by: Alex A. Naanou <alex.nanou@gmail.com>
---
 scripts/cls2tex.sh     | 3 +--
 scripts/make-images.sh | 6 ++++++
 2 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/scripts/cls2tex.sh b/scripts/cls2tex.sh
index a085ba5..3bcd9ce 100755
--- a/scripts/cls2tex.sh
+++ b/scripts/cls2tex.sh
@@ -60,10 +60,9 @@ while true ; do
 			exit
 			;;
 		-p|--prefix)
+			PREFIX=$2
 			shift
-			PREFIX=$1
 			shift
-			continue
 			;;
 
 		# handle unknown options...
diff --git a/scripts/make-images.sh b/scripts/make-images.sh
index 9a352c6..7be3a53 100644
--- a/scripts/make-images.sh
+++ b/scripts/make-images.sh
@@ -177,6 +177,12 @@ while true ; do
 			shift
 			;;
 
+		# handle unknown options...
+		-*|--*)
+			echo "Error: unknown option \"$1\""
+			exit
+			;;
+
 		*)
 			break
 			;;