XML pretty-print in separate option

Who reads plain XML anyway?

README.md

@@ -36,7 +36,6 @@ The arguments are:
 
 - Change what morss does
 	- `json`: output as JSON
-	`indent`: returns indented JSON, takes more place, but human-readable
 	- `proxy`: doesn't fill the articles
 	- `clip`: stick the full article content under the original feed content (useful for twitter)
 	- `keep`: by default, morss does drop feed description whenever the full-content is found (so as not to mislead users who use Firefox, since the latter only shows the description in the feed preview, so they might believe morss doens't work), but with this argument, the description is kept
@@ -44,6 +43,7 @@ The arguments are:
 - Advanced
 	- `csv`: export to csv
 	- `md`: convert articles to Markdown
+	- `indent`: returns indented XML or JSON, takes more place, but human-readable
 	- `nolink`: drop links, but keeps links' inner text
 	- `noref`: drop items' link
 	- `hungry`: grab full-article even if it already looks long enough

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):