Evergreen

🌳 Treesitter support for Lite XL.

Evergreen adds Treesitter syntax highlighting support for Lite XL. It is work in progress, but functions well.

Warning Evergreen is only tested on Linux and will definitely not work on Windows.

Showcase

Without Evergreen	With Evergreen

Supported Languages

• C
• C++
• CSS
• D
• Diff
• Go
• go.mod
• HTML
• Javascript/JSX
• Julia
• Lua
• Rust
• Zig

If you want more languages supported, open an issue.

Requirements

• Lite XL 2.1+ or Pragtical
• lua_tree_sitter library

Installation

Plugin Manager

Miq

Evergreen can be easily installed with Miq by adding this to your plugin declaration:

{'TorchedSammy/Evergreen.lxl'},

lpm / ppm

Evergreen can be installed using lpm for Lite XL or ppm for Pragtical:

lpm install evergreen
ppm install evergreen

Manual

• Git clone Evergreen into Lite XL plugins directory Or symlink:

cd ~/Downloads
git clone https://github.com/TorchedSammy/Evergreen.lxl
ln -s ~/Downloads/Evergreen.lxl ~/.config/lite-xl/plugins/evergreen

lua_tree_sitter Installation

Plugin Manager

Plugin managers will handle the installation of the lua_tree_sitter library automatically.

Manual Install

You can download the library from here, and then place it inside the libraries/tree_sitter directory inside your user directory. Rename the binary to init.so.

Usage

To use Evergreen, you have to install the parser for your language of choice. This can be done with the Evergreen: Install command.

The next thing to do is add style variables for the highlighting groups in your config. This can be done like:

local style = require 'core.style'

style.syntax['<name>'] = '#ffffff'

There are a lot of highlight groups to have better control over what specific parts to highlight. This may be overwhelming for some people though, so some of these have aliases to the default Lite XL style variables, and groups like keyword.return will default to the keyword group, conditional.ternary will default to conditional if its set, etc.

Evergreen will warn in the log if there are any groups missing, you can look at this to see what to set to highlight.

These are the available highlight groups:

• attribute
• boolean: A group to highlight booleans specifically
• character
• comment
• comment.documentation: Doc comments
• conditional: Keywords relating to conditionals (if/else)
• conditional.ternary
• constant
• constant.builtin: Constants that are builtins to the language (Go's iota, nil)
• constructor: Constructors (like new functions)
• define
• exception: Keywords relating to exceptions (try and catch)
• field: Like a field in a Lua table
• float
• function: Function declaration
• function.call: Function call
• function.macro
• function.builtin
• include: Keywords related to including modules/packages
• keyword.function: The function operator in a language (like func in Go)
• keyword.operator: Operators that are words (like and, or in Lua)
• keyword.return: The return operator
• keyword.coroutine
• label
• method
• method.call
• namespace
• number
• operator
• parameter: Parameters to a function (in declaration)
• preproc: Preprocessor directives (#if in C)
• punctuation.delimiter: Punctuation that delimits items (, and :)
• punctuation.bracket: Brackets of all kinds (() or {}, etc)
• punctuation.special: # in rust, treated as an operator by default
• repeat: Keywords relating to loops (while, for)
• storageclass: static, const in C
• storageclass.lifetime: Specifically for lifetimes in Rust currently
• string
• string.escape: string special character (e.g.: \n)
• tag: HTML/JSX tags
• tag.delimiter: <>
• tag.attribute: Tag attributes
• text.diff.add: Highlights additions in diffs
• text.diff.delete: Highlights deletions in diffs
• type
• type.builtin: Builtin types (int, bool)
• type.definition
• type.qualifier: Type qualifiers (private, public)
• property: class field
• variable
• variable.builtin: Builtin variables (this, self)
• error

License

MIT