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1. Alacritty undercurl how to#
2. Alacritty undercurl install#
3. Alacritty undercurl update#
4. Alacritty undercurl code#

The vi mode allows moving around Alacritty's viewport and scrollback using the keyboard. Tips and tricks Spawn new instance in same directoryĪdd the following lines to your configuration file to spawn a new instance of Alacritty in the current working directory by pressing Ctrl+Shift+Enter: Note that some fonts do not provide an Italic style but an Oblique style instead. Substitute monospace with a font name from the output of If you do not want to use your system’s default font, you can specify a different font by changing the following lines:

Alacritty undercurl code#

If your preferred color scheme is on the list, paste the provided code into your configuration file. See the upstream wiki for a list of available color schemes. Most settings take effect as soon as you save the file.

Alacritty undercurl install#

Install the alacritty package or alacritty-git AUR for the development version.Īlacritty searches for a configuration file at the following places in this order: It supports scrollback, 24-bit colors ( w:Color depth#True color (24-bit), copy/paste, clicking on URLs, and custom key bindings. So in the end, when our underlying terminal is * (anything, but you could be more specific and just narrow it down to alacritty, for example) and tmux receives a Smulx from Neovim, it will spit out something like E[4:2m, which the host terminal Alacritty understands and renders into an actual wobbly red (or orange, or blue, or whatever) line.Alacritty is a simple, GPU-accelerated terminal emulator written in Rust. And as the application author I didn't need to write it to know the sequence that every terminal needs to see to make an undercurl.

Alacritty undercurl how to#

So you as the application writer could say, hey I need an undercurl so I'm asking for Smulx and any terminal that knows how to Smulx will then match on that and provide the relevant escape codes. You can read more about what terminfo is here, but my basic understanding is that it lets calling applications ask for the capability without needing to know exactly how each terminal has it implemented. And Smulx and Setulc are terminfo capability names. The last parts to understand here are terminal-overrides and what the heck are Smulx and Setulc? The terminal-overrides allow terminal descriptions read using terminfo to be overriden. You can see the \E[4 and \E[58 in there followed by sequences that allow tmux to interpolate incoming values to handle the escape sequences we just saw above. Set -as terminal-overrides ',*:Setulc=\E[58::2::%p1%%&%d% m' # underscore colours - needs tmux-3.0 Set -as terminal-overrides ',*:Smulx=\E[4::%p1%dm' # undercurl support

Set-option -gas terminal-overrides "*:RGB" # true color support Set-option -gas terminal-overrides "*:Tc" # true color support

Alacritty undercurl update#

May need to update terminfo to recognize tmux-256color. # MacOS ships with a very old ncurses and terminfo. Older terminfo won't recognize tmux-256color, which Neovim prefers to work with. As noted in the comments, you'll need at least tmux 3.0 for colors, and you may need to update your terminfo if you're on MacOS or just generally have an older terminfo. Right up front without reading the rest, here's what you need. It worked in Alacritty but not when combined with tmux. The very next day I started a tmux session inside of Alacritty, opened Neovim, and was aghast to see that the diagnostics were once again a pedestrian regular underline and in the wrong color to boot. The LSP server sends diagnostic errors, which Neovim as the LSP client can mark with some sort of underline.The undercurl entered my life on that fateful day for a few reasons: A single tear rolled down my cheek at the sight of this thing that I later learned was called an undercurl. a little red squiggly line underneath a variable with a typo in the name. And it was going to be such a quick edit that I didn't bother to start a tmux session first. One day I popped open Alacritty to edit something quickly in Neovim.