XML pretty-print in separate option

Who reads plain XML anyway?

morss/feeds.py

@@ -361,7 +361,7 @@ class FeedParser(FeedBase):
     items = FeedListDescriptor('items')
 
     def tostring(self, **k):
-        return etree.tostring(self.xml.getroottree(), pretty_print=True, **k)
+        return etree.tostring(self.xml.getroottree(), **k)
 
     def tojson(self, indent=None):
         return json.dumps(OrderedDict(self), indent=indent)

morss/morss.py

@@ -631,7 +631,10 @@ def Format(rss, options):
     elif options.reader:
         return rss.tohtml()
     else:
-        return rss.tostring(xml_declaration=True, encoding='UTF-8')
+        if options.indent:
+            return rss.tostring(xml_declaration=True, encoding='UTF-8', pretty_print=True)
+        else:
+            return rss.tostring(xml_declaration=True, encoding='UTF-8')
 
 
 def process(url, cache=None, options=None):