textDocument/inlineCompletion support

[taylorplewe]

textDocument/inlineCompletion was added in the latest version of the LSP spec (3.18.0). It's main purpose is for providing similar functionality to that of Copilot in VS Code and Zed--displaying suggestions to the user via ghost text following the cursor.

Inline completion items usually complete bigger portions of text (e.g., whole methods) and in contrast to completions, items can complete code that might be syntactically or semantically incorrect.

Due to this, inline completion items are usually not suited to be presented in normal code completion widgets like a list of items. One possible approach can be to present the information inline in the editor with lower contrast.

Is this something we feel should be implemented in Helix? It was discussed a little in this discussion about Copilot support. This would allow (among other things I'm sure) for full support of the official Copilot LSP.

[David-Else]

Is this something we feel should be implemented in Helix?

Yes!