A major mode for Kotlin, based on the built-in support for tree-sitter that was added in Emacs 29.

Install

Grammar

In order to use tree-sitter, you must have a grammar for the language. In this case, that is tree-sitter-kotlin.

git clone [email protected]:fwcd/tree-sitter-kotlin.git
cd tree-sitter-kotlin
cc -shared -fPIC -g -O2 -I src src/scanner.c src/parser.c -o libtree-sitter-kotlin.so

You must then either copy libtree-sitter-kotlin.so into your library location (probably /usr/local/lib) or you must add the directory to your treesit-extra-load-path variable:

(add-to-list 'treesit-extra-load-path "/path/to/tree-sitter-kotlin")

Major Mode

First, make sure that your Emacs is compiled with tree-sitter support:

(treesit-available-p) ; should return t

Then just install this package!

Raw Emacs

Clone this repository somewhere on your machine.

(add-to-list 'load-path "/path/to/emacs-kotlin-ts-mode")
(require 'kotlin-ts-mode)
(add-to-list 'auto-mode-alist '("\\.kt\\'" . kotlin-ts-mode)) ; if you want this mode to be auto-enabled

straight.el

(use-package kotlin-ts-mode
  :straight (:host gitlab :repo "bricka/emacs-kotlin-ts-mode")
  :mode "\\.kt\\'" ; if you want this mode to be auto-enabled
  )