Feature request: hs.hotkey.bind - Allow to use fn/globe/🌐 key as a modifier

[salmanuc]

Title

[evantravers]

Yes please!

[maptv]

When I run

hs.hotkey.bind(
  {"cmd","alt","shift","ctrl","fn"},
  "e",
  function() 
    print(hs.inspect(hs.eventtap.checkKeyboardModifiers())) 
  end
)

in the HS console, I get

yyyy-mm-dd hh:mm:ss:              hotkey: Enabled hotkey ✧E

Then, when I press Cmd Alt Shift Ctrl e, I get

 yyyy-mm-dd hh:mm:ss:              {
  alt = true,
  cmd = true,
  ctrl = true,
  shift = true,
  ["⇧"] = true,
  ["⌃"] = true,
  ["⌘"] = true,
  ["⌥"] = true
}

but Cmd Alt Shift Ctrl Fn e does nothing.

The fn is ignored entirely by hs.hotkey.bind() and not present in the output of hs.inspect(hs.eventtap.checkKeyboardModifiers())).

I could use Hyper (Cmd Alt Shift Ctrl), but I prefer to use Fn, because then HS could function independently of Karabiner and my HS shortcuts could fit in with native macOS window management shortcuts: https://support.apple.com/guide/mac-help/mac-window-tiling-icons-keyboard-shortcuts-mchl9674d0b0/mac

[kovacm]

When I run

hs.hotkey.bind(
  {"cmd","alt","shift","ctrl","fn"},
  "e",
  function() 
    print(hs.inspect(hs.eventtap.checkKeyboardModifiers())) 
  end
)

Run this code:

-- Create a local variable to store the eventtap watcher so it isn't garbage collected
local modifierWatcher = hs.eventtap.new({hs.eventtap.event.types.flagsChanged}, function(event)
    -- Get the current state of all modifiers (cmd, alt, shift, ctrl, fn, capslock)
    local modifiers = hs.eventtap.checkKeyboardModifiers()
    -- Format the active modifiers into a readable string
    local activeMods = {}
    for mod, isPressed in pairs(modifiers) do
        if isPressed then
            table.insert(activeMods, mod)
        end
    end
    print("Pressed Modifiers: " .. table.concat(activeMods, ", "))
end)

modifierWatcher:start()

and you will see that Hamerspoon correctly report: "Pressed Modifiers: fn" when you press fn or Globe key.

But my prolem is that this code:

hs.hotkey.bind({"fn"}, "b", function()
    hs.alert.show("You pressed fn + B!")
end)

does not get invoke if you press fn + b but it get invoke if you press only b! 😔

So, Hammerspoon detect fn press in hs.eventtap.checkKeyboardModifiers() but for some reason it wont detect in it .bind!

What is more intreguing, I can not assign in System Settings > Keyboard Shortcuts any shortcuts with fn (globe) key although I can see that there are many default "globe" shortcuts defined! More at: https://forums.macrumors.com/threads/function-key-globe-key-as-shortcut.2470194/

btw why my code is not properly repsrent in this post?!? `` <- this should render text as monotype font? btw2 it is not single as you get when you press on icon but triple ``` ... gosh.