local xml_escape
do
- local escape_table = { ["'"] = "'", ["\""] = """, ["<"] = "<", [">"] = ">", ["&"] = "&" };
- function xml_escape(str) return (s_gsub(str, "['&<>\"]", escape_table)); end
+ local escape_table = {
+ ["'"] = "'";
+ ['"'] = """;
+ ["<"] = "<";
+ [">"] = ">";
+ ["&"] = "&";
+ -- escape this whitespace because [\r\n\t] change into spaces in attributes
+ -- and \r\n changes into \n in text, and we want to preserve original bytes
+ ["\t"] = "	";
+ ["\n"] = "
";
+ ["\r"] = "
";
+ };
+ function xml_escape(str) return (s_gsub(str, "['&<>\"\t\n\r]", escape_table)); end
_M.xml_escape = xml_escape;
end