function open_doc_in_vsplit()
	local word = vim.fn.expand("<cword>")
	if word == "" then
		vim.notify("No word under cursor", vim.log.levels.INFO)
		return
	end

	-- Try to get LSP hover documentation
	local params = vim.lsp.util.make_position_params()
	local results = vim.lsp.buf_request_sync(0, "textDocument/hover", params, 1000) or {}
	local doc_lines = nil

	for _, res in pairs(results) do
		local contents = res.result and res.result.contents
		if contents then
			doc_lines = vim.lsp.util.convert_input_to_markdown_lines(contents)
			doc_lines = vim.lsp.util.trim_empty_lines(doc_lines)
			if #doc_lines > 0 then
				break
			end
		end
	end

	if doc_lines and #doc_lines > 0 then
		-- Open a new vertical split for LSP hover documentation
		vim.cmd("vnew")
		local bufnr = vim.api.nvim_get_current_buf()
		-- Set the buffer to unmodifiable scratch buffer
		vim.api.nvim_buf_set_lines(bufnr, 0, -1, false, doc_lines)
		vim.bo[bufnr].modifiable = false
		vim.bo[bufnr].bufhidden = "wipe"
		vim.bo[bufnr].filetype = "markdown"
		return
	end

	-- Fallback to vim help command
	local help_cmd = "vertical help " .. word
	local ok, _ = pcall(vim.cmd, help_cmd)
	if not ok then
		vim.notify("No documentation available for '" .. word .. "'", vim.log.levels.INFO)
	end
end

return open_doc_in_vsplit