Ideally, an LSP client should make use of Vim's built-ins as much as possible.
| LSP Feature | Mandatory | Vim built-in |
|---|---|---|
| completion | yes | completion |
| hover | yes | ballooneval |
| go to definition | yes | tags via a temp tags file? gd? |
| find references | yes | qf |
| document symbols | yes | ? |
| diagnostics | yes | makeprg, :make, quickfix |
| signature help | no | :ptag, etc. |
| go to type definition | no | tags |
| go to implementation | no | tags |
| document highlights | no | ? |
| code actions | no | maybe a prompt? |
| code lens | no | ? |
| document link | no | gx or gf? |
| document color | no | ? |
| color presentation | no | ? |
| document formatting | no | formatprg and gq |
| document range formatting | no | idem |
| document on type formatting | no | idem + formatoptions |
| rename | no | search > qf > cdo/cfdo |
| prepare rename | no | ? |
| folding | no | foldexpr |