Allow empty strings to disable mapping

Author: Thales Mello

lua/debugprint/setup.lua

@@ -7,7 +7,7 @@ local debugprint = require("debugprint")
 ---@param opts table
 ---@return nil
 local map_key = function(mode, lhs, opts)
-    if lhs ~= nil then
+    if lhs ~= nil and lhs ~= '' then
         vim.api.nvim_set_keymap(mode, lhs, "", opts)
     end
 end