:ShowRootHighlightUnderCursor

ShowRootHighlightUnderCursor.lua

vim.api.nvim_create_user_command('ShowRootHighlightUnderCursor', function()
	local function findRoot(id, tree)
		local transId = vim.fn.synIDtrans(id)
		local name = vim.fn.synIDattr(id, 'name')
		table.insert(tree, name)

		if id == transId then
			print(table.concat(tree, ' -> '))
		else
			findRoot(transId, tree)
		end
	end

	local id = vim.fn.synID(vim.fn.line("."), vim.fn.col("."), 0)
	findRoot(id, {})
end, {})

By cursor you don't mean mouse cursor, right?

I can't get this to print anything at all 🤔

When executing the user command and my cursor is over a JS variable, for example, it just throws an empty notification window (I changed print to vim.notify).

Any idea what could be going on here?