0.9.79

What's new in 0.9.79?

Here is a summary of what's changed in Hammerspoon 0.9.79.

• Improvements
• Other Changes
• Bug Fixes
• New Extensions
• New Features

---

Improvements

Lua Updated

Hammerspoon now uses Lua 5.4.0 (as opposed to 5.3.5). It's main new features are discussed here.

If you use Luarocks, you may need to make some changes to your code, which is discussed in the Wiki.

Fixed coroutine support

Hammerspoon fixed various things to allow coroutine support to work properly.

You can also find more information about coroutines on the Wiki.

Crash Reporting

We now use sentry.io instead of Crashlytics for monitoring crash data.

You can review our new privacy policy here.

Stream Deck Support

hs.streamdeck has been refactored to add support for the Stream Deck XL and Stream Deck Mini.

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Other Changes

• Added ability to pass optional alert message in Spoon hotkey bindings.
• Changed hs.watchable to allow for a nil (or not provided) callback for cleaner watcher construction.
• The MJConfigFile preferences option now resolves symlinks. However, please note that we may revert back to the original behaviour in a future release.

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Bug Fixes

• Fixed potential memory leak in hs.eventtap.event:getUnicodeString()
• hs.chooser now correctly shows icons in their original colors.
• Fixed potential crashes due to dispatches in various modules: hs.application, hs.battery.watcher, hs.caffeinate.watcher, hs.canvas, hs.dialog, hs.host.locale, hs.http, hs.httpserver, hs.image, hs.keycodes, hs.location, hs.network, hs.noises, hs.screen, hs.socket.udp, hs.spaces.watcher, hs.webviewandhs.wifi`.
• hs.dialog.chooseFileOrFolder() now supports filenames with space.
• Fixed bug which allows sending binary data with hs.socket.udp().
• Fixed bug in hs.webview.toolbar, which could cause a delay.
• Minor bug fixes to hs.caffienate and hs.canvas.
• Fixed a potential crash in the hs.midi callback.
• Fixed a potential crash in hs.settings.
• Fixed potential nil error in hs.window.focus()

---

New Extensions

hs.axuielement

This extension allows you to access the accessibility objects of running applications, their windows, menus, and other user interface elements that support the macOS Accessibility API.

You can learn more here.

You can find some examples of usage here.

hs.serial

This extension allows you to communicate with external devices through a serial port (most commonly RS-232).

You can learn more here.

Here's a simple example of it's usage:

local portNames = hs.serial.availablePortNames()
local portOne = portNames and portNames[1]
if portOne then
    serialPort = hs.serial.newFromName(portOne)
        :baudRate(4800)
        :dataBits(5)
        :parity("odd")
        :shouldEchoReceivedData(false)
        :stopBits(1)
        :usesDTRDSRFlowControl(false)
        :usesRTSCTSFlowControl(false)
        :callback(function(_ callbackType, message)
            print(string.format("callbackType: %s", callbackType))
            print(string.format("message: %s", message))            
        end)
        :open()
end

hs.websocket

This extension allows you to create a simple websocket client. A websocket is a communications protocol, providing full-duplex communication channels over a single TCP connection. Previously you could use the undocumented hs.http.websocket for working with websockets, however it never worked quite as expected, so this new extension replaces that.

You can learn more here.

Here's a simple example of it's usage:

echoTest = hs.websocket.new("wss://echo.websocket.org/", function(e, m)
    if e == "open" then
        echoTest:send("this is a test")
    else
        print(string.format("event: %s", e))
        print(string.format("message: %s", m))    
    end
end)

---

New Features

hs.screenRecordingState()

Checks the Screen Recording Permissions for Hammerspoon, and optionally allows you to prompt for permissions.

You can learn more here.

hs.window.list()

Gets a table containing all the window data retrieved from CGWindowListCreate. This allows you to get window information without Accessibility Permissions.

You can learn more here.

hs.pasteboard.watcher()

This extension allows you to watch for Pasteboard Changes. macOS doesn't offer any API for getting Pasteboard notifications, so this extension uses polling to check for Pasteboard changes at a chosen interval (defaults to 0.25).

You can learn more here.

Example usage:

generalPBWatcher = hs.pasteboard.watcher.new(function(v) print(string.format("General Pasteboard Contents: %s", v)) end)
specialPBWatcher = hs.pasteboard.watcher.new(function(v) print(string.format("Special Pasteboard Contents: %s", v)) end, "special")
hs.pasteboard.writeObjects("This is on the general pasteboard.")
hs.pasteboard.writeObjects("This is on the special pasteboard.", "special")

hs.relaunch()

Quits and relaunches Hammerspoon.

You can learn more here.

hs.coroutineApplicationYield()

Yield coroutine to allow the Hammerspoon application to process other scheduled events and schedule a resume in the event application queue.

You can learn more here. You can also find more information about coroutines on the Wiki.

hs.math.isNaN

Returns whether or not the value is the mathematical equivalent of "Not-A-Number".

You can learn more here.

hs.math.isFinite

Returns whether or not the value is a finite number.

You can learn more here.

hs.math.isInfinite

Returns whether or not the value is the mathematical equivalent of either positive or negative "Infinity".

You can learn more here.

hs.chooser:invalidCallback()

Sets/clears a callback for invalid choices.

You can learn more here.

hs.fs.urlFromPath()

Returns the encoded URL from a path. This is useful for supplying URLs to functions like hs.pasteboard.writeObjects({url=URL})

You can learn more here.

hs.canvas.useCustomAccessibilitySubrole()

Get or set whether or not canvas objects use a custom accessibility subrole for the contaning system window.

You can learn more here.