For future reference, on HN you can format code snippets by indenting it (that is, to say, indenting every line) by two spaces:

  # Copy-Paste re-implementation for Mac Keyboard
  set $mod Mod4
  bindsym --to-code $mod+z exec wtype -P XF86Undo
  bindsym --to-code $mod+Shift+z exec wtype -P XF86Redo
  bindsym --to-code $mod+x exec wtype -P XF86Cut
  bindsym --to-code $mod+c exec wtype -P XF86Copy
  bindsym --to-code $mod+v exec wtype -P XF86Paste

Oh, thanks, I didn’t know how to do that, and since you fixed it already, I’m going to keep it as it is, for others to know too.