COLUMNS=40
diffcmd='diff --unchanged-line-format= --old-line-format=<%L --new-line-format=>%L'
+for option in "$@"
+do
+ case "$option" in
+ -*) echo "Usage: $0 [<files>...]"; exit 64;;
+ esac
+done
+
for candidate in ${@:-t*.in}
do
test_count=$((test_count+1))