fzfmenu - when there is no arguments - don't pass anything to fzf (instead of calling fzf '')

Examples.md

@@ -1468,11 +1468,12 @@ mkfifo $output
 chmod 600 $input $output
 
 # it's better to use st here (starts a lot faster than pretty much everything else)
-# the ugly printf thing is here to make args with quotes work.
+# the ugly printf | sed thing is here to make args with quotes work.
 # (e.g. --preview='echo {1}')
 # sadly we can't use "$@" here directly because we are inside sh -c "..." call
 # already
-st -c fzfmenu -n fzfmenu -e sh -c "cat $input | fzf $(printf -- " '%s'" "$@") | tee $output" & disown
+
+st -c fzfmenu -n fzfmenu -e sh -c "cat $input | fzf $(printf -- " '%s'" "$@" | sed "s/^ ''$//") | tee $output" & disown
 
 # handle ctrl+c outside child terminal window
 trap "kill $! 2>/dev/null; rm -f $input $output" EXIT