Because github pages cannot open a bookmarklet from firefox, I can't bookmark pages to pinboard. So I've created this Hammerspoon script to open a firefox page on safari.

open-firefox-page-in-safari.lua

getUrl = [[
tell application "System Events"
  tell application "Firefox" to activate
  delay .5
  tell application "System Events"
    keystroke "l" using command down
    keystroke "c" using command down
  end tell
  delay .5
  set u to the clipboard
  tell application "Safari"
    tell window 1
        set current tab to (make new tab with properties {URL:u})
    end tell
  end tell
  tell application "Safari" to activate
  return u
end tell
]]

hs.hotkey.bind({"cmd", "alt", "ctrl"}, "Y", function()
  ok,result = hs.applescript(getUrl)
  hs.alert.show(result)
end)