Fix dangerous copy/move script in lf

Context: I accidentally pressed the C key on my .config directory and was presented with a list of directories to copy it to, then I pressed escape to quit the fzf menu without choosing anything - instead of doing nothing the script copied all of the contents inside my .config directory into my home directory. After dealing with that mess I decided to make this PR which does the following:

- Allow users to escape out of the fzf menu without unexpected copies
- Asks the user for confirmation before copying/moving files
- Some improvements in the UI

.config/lf/lfrc

@@ -92,25 +92,37 @@ cmd delete ${{
 }}
 
 cmd moveto ${{
-	clear; tput cup $(($(tput lines)/3)); tput bold
 	set -f
-	clear; echo "Move to where?"
-	dest="$(sed -e 's/\s*#.*//' -e '/^$/d' -e 's/^\S*\s*//' ${XDG_CONFIG_HOME:-$HOME/.config}/shell/bm-dirs | fzf | sed 's|~|$HOME|')" &&
+	dest=$(sed -e 's/\s*#.*//' -e '/^$/d' -e 's/^\S*\s*//' "${XDG_CONFIG_HOME:-$HOME/.config}/shell/bm-dirs" | fzf --prompt 'Move to where? ' | sed 's|~|$HOME|')
+	[ -z "$dest" ] && exit
+	destpath=$(eval printf '%s' \"$dest\")
+	clear; tput cup $(($(tput lines)/3)); tput bold
+	echo "From:"
+	echo "$fx" | sed 's/^/   /'
+	printf "To:\n   %s\n\n\tmove?[y/N]" "$destpath"
+	read -r ans
+	[ "$ans" != "y" ] && exit
 	for x in $fx; do
-		eval mv -iv \"$x\" \"$dest\"
+		mv -iv "$x" "$destpath"
 	done &&
-	notify-send "🚚 File(s) moved." "File(s) moved to $dest."
+	notify-send "🚚 File(s) moved." "File(s) moved to $destpath."
 }}
 
 cmd copyto ${{
-	clear; tput cup $(($(tput lines)/3)); tput bold
 	set -f
-	clear; echo "Copy to where?"
-	dest="$(sed -e 's/\s*#.*//' -e '/^$/d' -e 's/^\S*\s*//' ${XDG_CONFIG_HOME:-$HOME/.config}/shell/bm-dirs | fzf | sed 's|~|$HOME|')" &&
+	dest=$(sed -e 's/\s*#.*//' -e '/^$/d' -e 's/^\S*\s*//' "${XDG_CONFIG_HOME:-$HOME/.config}/shell/bm-dirs" | fzf --prompt 'Copy to where? ' | sed 's|~|$HOME|')
+	[ -z "$dest" ] && exit
+	destpath=$(eval printf '%s' \"$dest\")
+	clear; tput cup $(($(tput lines)/3)); tput bold
+	echo "From:"
+	echo "$fx" | sed 's/^/   /'
+	printf "To:\n   %s\n\n\tcopy?[y/N]" "$destpath"
+	read -r ans
+	[ "$ans" != "y" ] && exit
 	for x in $fx; do
-		eval cp -ivr \"$x\" \"$dest\"
+		cp -ivr "$x" "$destpath"
 	done &&
-	notify-send "📋 File(s) copied." "File(s) copies to $dest."
+	notify-send "📋 File(s) copied." "File(s) copied to $destpath."
 }}
 
 cmd setbg "$1"