This is becoming quite the list! Thanks for your recommendations, everybody. I’ll have enough for a couple more bike rides (but feel free to keep them coming).

Help me out, here. What’s your favorite podcast? I’m just about to get ready to bike home, so I could do with a few recommendations.

Another great thing about coc.nvim is its ability to automatically format files on save through its plugins.

I've turned on automatic formatting for Elixir and Rust files by adding both to `coc.preferences.formatOnSaveFiletypes` in `coc-settings.json`.

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Just received an unsolicited email from [email API service] to invite me to their webinar on deliverability. It had a working unsubscribe link (although I have to unsubscribe from every type of these, apparently) and a physical address in it, so it’s all good, I guess. 🤷‍♂️

“How’s that for a quick turnaround? From lunch to patch release in 22 minutes!”

With Twitter now requiring developers to sign up and have their idea reviewed before they get an API token, we’re missing out on some really stupid bots.

Like the “rt for reach”-retweeting bot I wanted to build, which would have been the most fun you can have with recursion. 🤷‍♂️

That’s it for now! Please take it for a spin and let me know if you find something I can improve on.

Have a smart configuration in your ~/.vimrc yourself? Turn it into a plugin! A good place to start (and the source of most of my VimL-fu) is learnvimscriptthehardway.steve.

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That’s it! Sourcing our plugin once more, we can switch macOS’s appearance to dark mode and have Vim automatically follow when it gains focus.

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To add our autocommand to our plugin, we’ll wrap it in an `augroup` to make sure it’s reloaded properly when we load the plugin multiple times, for whatever reason:

augroup nightfall
autocmd FocusGained,BufEnter * call UpdateBackground()
augroup END

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We’ll use autocommands, which fire automatically when a certain trigger happens. In our case, we’ll call our function when Vim gains focus (`FocusGained`) or when entering a buffer (`BufEnter`):

:autocmd FocusGained,BufEnter * call UpdateBackground()

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Let’s try our function. To load our file, call `:source %` (`%` is a shortcut for the current file).

Then, we can switch the background by running `:call UpdateBackground()`. It should switch to match macOS’s background mode. 🎉

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In nightfall.vim, we'll define a function:

function UpdateBackground()
if system("defaults read -g AppleInterfaceStyle") == "Dark\n"
if &bg == "light" | set bg=dark | endif
if &bg == "dark" | set bg=light | endif

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With our prototype done, let’s build that plugin. After settling on a name, we’ll create a directory and a file to store our plugin in.

$ mkdir -p ~/.vim/pack/plugins/start/vim-nightfall/plugin
$ nvim ~/.vim/pack/plugins/start/vim-nightfall/plugin/nightfall.vim

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Combining these, we can set our background color based on the `AppleInterfaceStyle`:

:if system("defaults read -g AppleInterfaceStyle") == "Dark\n"
: if &bg == "light" | set bg=dark | endif
: if &bg == "dark" | set bg=light | endif

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We can use an if-statement to set `bg=dark` if it’s currently “light”, and vice versa:

:if &bg == "light" | set bg=dark | endif

:if &bg == "dark" | set bg=light | endif

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First things first. We need to know when to switch the background color. We’ll check `defaults read -g AppleInterfaceStyle`, which produces `Dark\n` when macOS’s dark mode is turned on.

In Vim, as a boolean:

:echom system("defaults read -g AppleInterfaceStyle") == "Dark\n"

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