character escapes work differenetly

Please read the following before submitting:

• The following either do not make sense for Wayland or we have decided against supporting:
  • restart
  • resource
  • saving and loading layouts
  • the i3 sync protocol

Please fill out the following:

• i3 PR:

  • If this is new i3 functionality, please add a link to the i3 pull request.

• Description:

  • Please describe in plain English how Sway and i3's behaviors differ or what functionality Sway is lacking.

# following line works in sway, but not in i3
bindsym $mod+Alt+Right exec temp=$(echo "let data=$($msg -t get_workspaces);console.log(data.filter(e=>e.focused)[0].num+1)" | node -) && $msg workspace number $temp
# following line works in i3, but not in sway
bindsym $mod+Alt+Left exec "temp=$(echo \\"let data=$($msg -t get_workspaces);console.log(data.filter(e=>e.focused)[0].num-1)\\" | node -) && $msg workspace number $temp"