add -w flag for custom widths

allioli.sh

@@ -21,6 +21,7 @@ show_help() {
 	echo "usage: $(basename "$0") [flags] [reference...]"
 	echo
 	echo "  -l      list books"
+	echo "  -w <n>  set custom terminal width"
 	echo "  -W      no line wrap"
 	echo "  -F      no footnotes"
 	echo "  -g      show only German (no Latin)"
@@ -64,6 +65,14 @@ while [ $# -gt 0 ]; do
 		# List all book names with their abbreviations
 		get_data allioli.tsv | awk -v cmd=list "$(get_data allioli.awk)"
 		exit
+	elif [ "$1" = "-w" ]; then
+		shift
+		if [ $# -eq 0 ] || [ -z "$1" ]; then
+			echo "error: -w requires a width argument" >&2
+			exit 1
+		fi
+		export ALLIOLI_MAX_WIDTH="$1"
+		shift
 	elif [ "$1" = "-W" ]; then
 		export ALLIOLI_NOLINEWRAP=1
 		shift
@@ -83,9 +92,11 @@ while [ $# -gt 0 ]; do
 	fi
 done
 
-cols=$(tput cols 2>/dev/null)
-if [ $? -eq 0 ]; then
-	export ALLIOLI_MAX_WIDTH="$cols"
+if [ -z "$ALLIOLI_MAX_WIDTH" ]; then
+	cols=$(tput cols 2>/dev/null)
+	if [ $? -eq 0 ]; then
+		export ALLIOLI_MAX_WIDTH="$cols"
+	fi
 fi
 
 if [ $# -eq 0 ]; then