dn

A terminal client for dev-null.sh that looks and feels like Neovim, written in Rust with ratatui.

What it does

• Reading: the Following, Latest and Trending logs, threads, profiles and organizations, followers and following, notifications and starred commits. Older pages load as you scroll; new commits and unread notifications are polled for.
• Writing: commits, replies and quotes in $EDITOR, previewed by the server before they are published. Drafts you don't publish are kept for the session. :commit @org posts as an organization.
• Acting: star, follow, delete your own commits, open links in the browser, yank a commit's link (OSC 52), and hover cards (K) for accounts and links.
• Pictures: commit pictures, avatars and link-card pictures, animated ones too. They are drawn with the kitty graphics protocol in Ghostty and kitty, and with half blocks elsewhere.
• Vim all the way: motions and counts, / ? n N * #, Visual mode and yanks, nested folds, splits, buffers and pickers, the jumplist and tag stack, <Tab> completion on the command line, :map, :set, :hi, :colorscheme, and an init.vim.

Building

You need a recent stable Rust; dn is built and tested with 1.99.

cargo build --release
./target/release/dn

or install it with cargo install --path crates/devnull.

Terminal

• A Nerd Font.
• For sharp pictures, Ghostty (1.4 or later) or kitty. Other terminals, and tmux, get half blocks. dn guesses from $TERM and $TERM_PROGRAM; :set graphics=kitty or :set graphics=halfblocks overrides the guess, for instance in a multiplexer that passes kitty graphics through.

First run

dn starts on its connect page. Type :connect to approve the device in your browser, checking that the page shows the fingerprint dn does. Over SSH, paste the link the browser ends on with :connect <link>. If dev-null.sh asks, accept its terms with :agree. The device key is kept in ~/.config/devnull/device_ed25519.

Getting around

:help lists every key binding, and your own maps; :help zo goes to one. A few to start with (<leader> is <Space>):

Keys
<leader>1 <leader>2 <leader>3	Following, Latest, Trending
]] [[	Next and previous commit
<CR>	Open what is under the cursor: a thread, a profile, a link
<C-t>, <C-o>	Back from what was opened, back in the jumplist
K	Hover card
c r R	Commit, reply, quote
s	Star
<leader><leader>	Find a buffer
q	Close the window; the last one quits
<leader>bd, a middle click on its tab	Close the feed or profile (:bdelete); opening it again starts it anew

Configuration

~/.config/devnull/init.vim runs at start, as Neovim's does. It takes :set (ignorecase, smartcase, hlsearch, incsearch, scrolloff, timeoutlen, leader, graphics), :map and its kin, :hi and :colorscheme (tokyonight, tokyonight-storm, tokyonight-moon, tokyonight-day, default):

colorscheme tokyonight-moon
set scrolloff=5
nnoremap <leader>t :edit log/trending<CR>

License

dn is licensed under the Apache License 2.0.

The tokyonight colorschemes come from folke/tokyonight.nvim, under the Apache License 2.0 too (LICENSES). What dn knows of the dev-null.sh API comes from WendellAdriel/dev-null-tui, the Go client, whose API and authentication packages served as its reference.