completion is very slow when enabling call snippets

[folke]

Describe the bug
I generated an EmmyLua Annotations library for the neovim lua API.

When I enable call snippets Lua.completion.callSnippet = "Both", completions become very slow (about 15 seconds to complete vim.api. on my laptop. (fyi, it returns about 300 functions)

When disabling the setting, the completion returns instantly.

Environment (please complete the following information):

• OS: macos latest version
• Client: neovim 0.5

If there's any additional information I can give you, let me know!

[oblitum]

ugh, my problem doesn't seem related with callSnippet in special, just that the language server becomes horribly slow on a 1.5k LoC file (my monolithic init.lua). (fixed)

[oblitum]

Okay, having fixed my former problem which was unrelated, I can now confirm this issue on my side as well, it happens for either callSnippet = "Both" or callSnippet = "Replace" (this one actually nicer as it removes duplicates).

[oblitum]

Confirmed solved (it's working really nice with coc.nvim). Can be a new default for lua-dev.nvim :)

[oblitum]

I suggest "Replace" is better default than "Both"?

[folke]

@sumneko that's awesome, thank you!!