scripts/preview: Add support for multiple files

.scripts/preview

@@ -2,9 +2,9 @@
 
 usage () {
 	cat <<EOF>&2
-Usage: ${0##*/} FILE
+Usage: ${0##*/} FILES
 
-Preview FILE:
+Preview FILES:
 
 - If folder, list it.
 
@@ -16,8 +16,8 @@ Preview FILE:
 EOF
 }
 
-[ $# -ne 1 ] && usage && exit 1
-[ "$1" = "-h" ] && usage && exit
+[ $# -lt 1 ] && usage && return 1
+[ "$1" = "-h" ] && usage && return
 [ "$1" = "--" ] && shift
 
 ls="ls -1 --color=always"
@@ -28,12 +28,8 @@ if [ "$(uname -o)" = "GNU/Linux" ]; then
 	ls="$ls  --group-directories-first"
 fi
 
-## Folders.
-[ -d "$1" ] && $ls "$1" && exit
-
 ## scope.sh.
 XDG_CONFIG_HOME=${XDG_CONFIG_HOME:-~/.config}
-
 scope="$XDG_CONFIG_HOME/ranger/scope.sh"
 if [ ! -x "$scope" ]; then
 	XDG_DATA_DIRS=${XDG_DATA_DIRS:-"/usr/local/share"}
@@ -43,27 +39,45 @@ if [ ! -x "$scope" ]; then
 	fi
 fi
 
-buf=$("$scope" "$1" $(tput cols) $(tput lines) 2>/dev/null)
-status=$?
+## Several files must share the screen space.
+lines=$(expr $(tput lines) / $#)
+[ $lines -lt 1 ] && lines=1
+echo HHH $lines
 
-case $status in
-1)
-	break ;;
-2)
-	## Text files
-	sed $(tput lines)q "$1"
-	exit ;;
-*)
-	echo "$buf" | sed $(tput lines)q
-	exit ;;
-esac
+_preview() {
+	## Folders.
+	[ -d "$1" ] && $ls "$1" && return
 
-## All files.
-path="$1"
-[ ! -e "$path" ] && path=$(command -v "$1")
-[ ! -e "$path" ] && exit 1
-$ls -l "$path"
-file "$path" | cut -d':' -f2 | cut -b 2-
-if command -v pacman >/dev/null 2>&1; then
-	pacman -Qo "$path" 2>/dev/null
-fi
+	buf=$("$scope" "$1" $(tput cols) $lines 2>/dev/null)
+	status=$?
+
+	case $status in
+	1)
+		break ;;
+	2)
+		## Text files
+		sed ${lines}q "$1"
+		return ;;
+	*)
+		echo "$buf" | sed ${lines}q
+		return ;;
+	esac
+
+	## All files.
+	path="$1"
+	[ ! -e "$path" ] && path=$(command -v "$1")
+	[ ! -e "$path" ] && return
+	$ls -l "$path"
+	file "$path" | cut -d':' -f2 | cut -b 2-
+	if command -v pacman >/dev/null 2>&1; then
+		pacman -Qo "$path" 2>/dev/null
+	fi
+}
+
+[ $# -eq 1 ] && _preview $1 && exit
+
+for i; do
+	## GNU head uses this echo when outputting multiple files.
+	echo "==> $i <=="
+	_preview "$i"
+done