[mini.completion] Adding snippet to completion candidates of ItemKind Function to add parantheses and place the cursor inside

[just-wasted]

Contributing guidelines

• I have read CODE_OF_CONDUCT.md

Module(s)

mini.completion

Question

Hi :)
would it be possible to get this behavior implemented in mini.completion? I think it improves usabilty alot and is the expected behaviour coming from other completion engines or editors/IDEs. Or maybe i have missed something when configuring mini.completion then please point me in the right direction.
One relevant comment i found was this #1557 (comment).

So in the meantime i'm using this to get what i want:

require("mini.completion").setup({
	lsp_completion = {
		source_func = "omnifunc",
		auto_setup = false,
		process_items = function(items, base)
			items = require("mini.completion").default_process_items(items, base)

			local Function = vim.lsp.protocol.CompletionItemKind.Function
			for _, item in ipairs(items) do
				if item.kind == Function then
					local text = item.insertText or item.label or ""
					if not text:match("%(.-%)$") then
						item.insertTextFormat = 2
						item.insertText = text .. "($0)"
					end
					if item.textEdit and item.textEdit.newText and not item.textEdit.newText:match("%(.-%)$") then
						item.textEdit.newText = item.textEdit.newText .. "($0)"
					end
				end
			end
			return items
		end,
	},
	delay = {
		completion = 25,
		info = 25,
		signature = 25,
	},
})

[echasnovski]

LSP completion in 'mini.completion' is used as close to what LSP server provided as possible. If the server didn't mark a candidate as a snippet, then I don't think it is up to the completion provider to make choices in server's behalf.

The config.lsp_completion.process_items is there exactly for users to adjust LSP completion to their liking. Maybe even per LSP server by setting it in buffer-local vim.b.minicompletion_config. So if this setup works for you, it is the suggested way of handling this use case.