rubyfmt VS coc-solargraph

We're using rubyfmt along with a rubocop config which does its best to strip out any styling decisions.

Looked at https://github.com/penelopezone/rubyfmt and other options but none seem to actually work.

RubyFmt is a brand-new code formatter that's written in Rust and currently under active development. Like Prettier, it is intended to be a formatter and not a code analysis tool. It hasn't seen a stable release just yet, so you should probably hold off on adopting it right now, but it's definitely one to keep an eye on.

Another example: code formatters. You mention gofmt (which you incorrectly put next to Ruby even though it's for Go)... There are lots of code formatters for Ruby, even if you only consider ones directly inspired/influenced by gofmt. A quick google turned up at least three of those: https://github.com/pariz/rubo-format, https://github.com/penelopezone/rubyfmt, and https://github.com/ruby-formatter/rufo. I'm pretty sure rubocop is used in Ruby more than any of those, but rubocop is less directly influenced by gofmt. So what do you choose? The project(s) that's more closely analogous? Or the more popular formatter?

I've been using coc.nvim along with the coc-solargraph plugin. These work well for me and provide very good code completion and error highlighting. There are some key intellisense features that aren't available (or I don't use them), but these two plugins do well enough for my purposes.

If you use Vim or Neovim, you can display RuboCop's diagnostics through coc.nvim. You need to install the Solargraph language server (gem install solargraph), followed by the coc-solargraph extension (:CocInstall coc-solargraph). Afterwards, configure your coc-settings.json file as shown below: