hammerspoon snippet to c-n,c-p... in slack and chrome

init.lua

local function remap(from_key, to_key)
   return hs.hotkey.new(from_key[1], from_key[2],
                        function() hs.eventtap.keyStroke(to_key[1], to_key[2]) end)
end

local maps={}
local function remap_add(win_filter_name, from_key, to_key)
   maps[win_filter_name] = maps[win_filter_name] or {}
   table.insert(maps[win_filter_name], remap(from_key, to_key))
end

local function remap_init()
   for k, v in pairs(maps) do
      hs.window.filter.new(k)
         :subscribe(hs.window.filter.windowFocused,
                    function()
                       for _, v in ipairs(v) do v:enable() end
                    end)
         :subscribe(hs.window.filter.windowUnfocused,
                    function()
                       for _, v in ipairs(v) do v:disable() end
                    end)
   end
end

-- https://www.hammerspoon.org/docs/hs.keycodes.html
remap_add("Slack", {{"ctrl"}, "p"},{{}, "up"})
remap_add("Slack", {{"ctrl"}, "n"},{{}, "down"})
remap_add("Slack", {{"alt"}, "b"},{{"alt"}, "left"})
remap_add("Slack", {{"alt"}, "f"},{{"alt"}, "right"})
remap_add("Slack", {{"alt"}, "d"},{{"alt", "shift"}, "forwarddelete"})
remap_add("Chromium", {{"alt"}, "b"},{{"alt"}, "left"})
remap_add("Chromium", {{"alt"}, "f"},{{"alt"}, "right"})
remap_add("Chromium", {{"alt"}, "d"},{{"alt", "shift"}, "forwarddelete"})
remap_init()