Lapce does not support only three languages. It uses LSP, which means any language with an LSP server should work out of the box. Some work has been done regard

Lapce does not support only three languages. It uses LSP, which means any language with an LSP server should work out of the box. Some work has been done regarding that on this release ( mainly making sure we respect the specification more), leading to making the Julia LSP works. Other LSP already tried and working are : C/CPP, Rust, Go, Python, and if I recall correctly JavaScript too. The only matter to take care of is to write a plugin to start the LSP server, which can be done in around 30 lines of Rust :)