Supported languages

cecli should work well with most popular coding languages. This is because top LLMs are fluent in most mainstream languages, and familiar with popular libraries, packages and frameworks.

cecli has specific support for linting many languages. By default, cecli runs the built in linter any time a file is edited. If it finds syntax errors, cecli will offer to fix them for you. This helps catch small code issues and quickly fix them.

cecli also does code analysis to help the LLM navigate larger code bases by producing a repository map. cecli can currently produce repository maps for many popular mainstream languages, listed below.

How to add support for another language

cecli should work quite well for other languages, even those without repo map or linter support. You should really try coding with cecli before assuming it needs better support for your language.

That said, if cecli already has support for linting your language, then it should be possible to add repo map support. To build a repo map, cecli needs the tags.scm file from the given language’s tree-sitter grammar. If you can find and share that file in a GitHub issue, then it may be possible to add repo map support.

If cecli doesn’t already support linting your language, it will be more complicated to add support. cecli relies on tree-sitter-language-pack to provide pre-packaged versions of tree-sitter language parsers. This makes it easy for users to install cecli in many diverse environments. You probably need to work with that project to get your language supported, which will easily allow cecli to lint that language. For repo-map support, you will also need to find or create a tags.scm file.

Language	File extension	Repo map	Linter
actionscript	.as		✓
ada	.adb		✓
ada	.ads		✓
agda	.agda		✓
arduino	.ino	✓	✓
asm	.asm		✓
asm	.s		✓
astro	.astro		✓
bash	.bash		✓
bash	.sh		✓
bash	.zsh		✓
beancount	.bean		✓
bibtex	.bib		✓
bicep	.bicep		✓
bitbake	.bb		✓
bitbake	.bbappend		✓
bitbake	.bbclass		✓
c	.c	✓	✓
c	.h	✓	✓
cairo	.cairo		✓
capnp	.capnp		✓
chatito	.chatito	✓	✓
clarity	.clar		✓
clojure	.clj	✓	✓
clojure	.cljc	✓	✓
clojure	.cljs	✓	✓
clojure	.end	✓	✓
cmake	.cmake		✓
cmake	CMakeLists.txt		✓
commonlisp	.cl	✓	✓
commonlisp	.lisp	✓	✓
cpon	.cpon		✓
cpp	.cc	✓	✓
cpp	.cpp	✓	✓
cpp	.cxx	✓	✓
cpp	.h++	✓	✓
cpp	.hpp	✓	✓
cpp	.hxx	✓	✓
csharp	.cs	✓	✓
css	.css		✓
csv	.csv		✓
cuda	.cu		✓
cuda	.cuh		✓
d	.d	✓	✓
dart	.dart	✓	✓
dockerfile	Dockerfile		✓
dtd	.dtd		✓
elisp	.el	✓	✓
elixir	.ex	✓	✓
elixir	.exs	✓	✓
elm	.elm	✓	✓
erlang	.erl		✓
erlang	.hrl		✓
fennel	.fnl		✓
firrtl	.fir		✓
fish	.fish		✓
fortran	.f	✓	✓
fortran	.f03	✓	✓
fortran	.f08	✓	✓
fortran	.f90	✓	✓
fortran	.f95	✓	✓
func	.fc		✓
gdscript	.gd		✓
gitattributes	.gitattributes		✓
gitcommit	.gitcommit		✓
gitignore	.gitignore		✓
gleam	.gleam	✓	✓
glsl	.frag		✓
glsl	.glsl		✓
glsl	.vert		✓
gn	.gn		✓
gn	.gni		✓
go	.go	✓	✓
gomod	go.mod		✓
gosum	go.sum		✓
groovy	.groovy		✓
gstlaunch	.launch		✓
hack	.hack		✓
hare	.ha		✓
haskell	.hs	✓	✓
haxe	.hx		✓
hcl	.hcl	✓	✓
hcl	.tf	✓	✓
hcl	.tfvars	✓	✓
heex	.heex		✓
hlsl	.hlsl		✓
html	.htm		✓
html	.html		✓
hyprlang	.hypr		✓
ispc	.ispc		✓
janet	.janet		✓
java	.java	✓	✓
javascript	.js	✓	✓
javascript	.jsx	✓	✓
javascript	.mjs	✓	✓
jsdoc	.jsdoc		✓
json	.json		✓
jsonnet	.jsonnet		✓
jsonnet	.libsonnet		✓
julia	.jl	✓	✓
kconfig	Kconfig		✓
kdl	.kdl		✓
kotlin	.kt	✓	✓
kotlin	.kts	✓	✓
latex	.cls		✓
latex	.sty		✓
latex	.tex		✓
linkerscript	.ld		✓
llvm	.ll		✓
lua	.lua	✓	✓
luadoc	.luadoc		✓
luap	.luap		✓
luau	.luau		✓
magik	.magik		✓
make	.mk		✓
make	Makefile		✓
markdown	.markdown		✓
markdown	.md		✓
matlab	.m	✓	✓
matlab	.mat	✓	✓
mermaid	.mermaid		✓
meson	meson.build		✓
ninja	.ninja		✓
nix	.nix		✓
nqc	.nqc		✓
objc	.mm		✓
ocaml	.ml	✓	✓
ocaml_interface	.mli	✓	✓
odin	.odin		✓
org	.org		✓
pascal	.pas		✓
pascal	.pp		✓
pem	.pem		✓
perl	.pl		✓
perl	.pm		✓
pgn	.pgn		✓
php	.php	✓	✓
po	.po		✓
po	.pot		✓
pony	.pony	✓	✓
powershell	.ps1		✓
powershell	.psm1		✓
printf	.printf		✓
prisma	.prisma		✓
properties	.properties	✓	✓
proto	.proto		✓
psv	.psv		✓
purescript	.purs		✓
pymanifest	MANIFEST.in		✓
python	.py	✓	✓
qmldir	qmldir		✓
qmljs	.qml		✓
r	.R	✓	✓
r	.r	✓	✓
racket	.rkt	✓	✓
re2c	.re2c		✓
readline	.inputrc		✓
requirements	requirements.txt		✓
ron	.ron		✓
rst	.rst		✓
ruby	.rb	✓	✓
rust	.rs	✓	✓
scala	.sc	✓	✓
scala	.scala	✓	✓
scheme	.scm		✓
scheme	.ss		✓
scss	.scss		✓
smali	.smali		✓
smithy	.smithy		✓
solidity	.sol	✓	✓
sparql	.rq		✓
sql	.sql		✓
squirrel	.nut		✓
starlark	.bzl		✓
starlark	BUILD		✓
starlark	WORKSPACE		✓
svelte	.svelte		✓
swift	.swift	✓	✓
tablegen	.td		✓
tcl	.tcl		✓
thrift	.thrift		✓
toml	.toml		✓
tsv	.tsv		✓
twig	.twig		✓
typescript	.ts	✓	✓
typescript	.tsx	✓	✓
typst	.typ		✓
udev	.rules	✓	✓
ungrammar	.ungram		✓
uxntal	.tal		✓
verilog	.sv		✓
verilog	.v		✓
vhdl	.vhd		✓
vhdl	.vhdl		✓
vim	.vim		✓
vim	.vimrc		✓
vue	.vue		✓
wgsl	.wgsl		✓
xcompose	.XCompose		✓
xml	.svg		✓
xml	.xml		✓
xml	.xsl		✓
yuck	.yuck		✓
zig	.zig	✓	✓