always reset options. typo.

README.md

@@ -77,7 +77,7 @@ var html = marked(markdown, options);
 - __pedantic__: Conform to obscure parts of `markdown.pl` as much as possible.
   Don't fix any of the original markdown bugs or poor behavior.
 - __gfm__: Enabled github flavored markdown (default for backward compatibility).
-- __sanitize__: Sanitize the output. Ignore an HTML that has been input.
+- __sanitize__: Sanitize the output. Ignore any HTML that has been input.
 
 None of the above are mutually exclusive/inclusive.
 

lib/marked.js

@@ -704,7 +704,7 @@ noop.exec = noop;
  */
 
 var marked = function(src, opt) {
-  if (opt) setOptions(opt);
+  setOptions(opt);
   return parse(block.lexer(src));
 };
 
@@ -715,7 +715,9 @@ var marked = function(src, opt) {
 var options;
 
 var setOptions = function(opt) {
-  options = opt || marked.defaults;
+  if (!opt) opt = marked.defaults;
+  if (options === opt) return;
+  options = opt;
 
   if (options.gfm) {
     block.fences = block.gfm.fences;
@@ -756,12 +758,12 @@ options = marked.defaults;
  */
 
 marked.parser = function(src, opt) {
-  if (opt) setOptions(opt);
+  setOptions(opt);
   return parse(src);
 };
 
 marked.lexer = function(src, opt) {
-  if (opt) setOptions(opt);
+  setOptions(opt);
   return block.lexer(src);
 };