[generic] Add comment for unescaping webpage contents

diff --git a/youtube_dl/extractor/generic.py b/youtube_dl/extractor/generic.py
index a3de0ba60a8d8e33ebf89e8f2d768d338039b100..300485c7f81b2ee6cba9f03823592d31b2fc6f9a 100644 (file)
--- a/youtube_dl/extractor/generic.py
+++ b/youtube_dl/extractor/generic.py
@@ -291,6 +291,9 @@ class GenericIE(InfoExtractor):
         except compat_xml_parse_error:
             pass
 
+        # Sometimes embedded video player is hidden behind percent encoding
+        # (e.g. https://github.com/rg3/youtube-dl/issues/2448)
+        # Unescaping the whole page allows to handle those cases in a generic way
         webpage = compat_urllib_parse.unquote(webpage)
 
         # it's tempting to parse this further, but you would