+local escapes = {
+ [" "] = "\\20"; ['"'] = "\\22";
+ ["&"] = "\\26"; ["'"] = "\\27";
+ ["/"] = "\\2f"; [":"] = "\\3a";
+ ["<"] = "\\3c"; [">"] = "\\3e";
+ ["@"] = "\\40"; ["\\"] = "\\5c";
+};
+local unescapes = {};
+for k,v in pairs(escapes) do unescapes[v] = k; end
+