diff options
| -rw-r--r-- | youtube_dl/jsinterp.py | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/youtube_dl/jsinterp.py b/youtube_dl/jsinterp.py index 186d2594a..f0c4fa928 100644 --- a/youtube_dl/jsinterp.py +++ b/youtube_dl/jsinterp.py @@ -1208,9 +1208,10 @@ class JSInterpreter(object): elif member == 'join': assertion(isinstance(obj, list), 'must be applied on a list') assertion(len(argvals) <= 1, 'takes at most one argument') - return (',' if len(argvals) == 0 else argvals[0]).join( - ('' if x in (None, JS_Undefined) else _js_toString(x)) - for x in obj) + return (',' if len(argvals) == 0 or argvals[0] in (None, JS_Undefined) + else argvals[0]).join( + ('' if x in (None, JS_Undefined) else _js_toString(x)) + for x in obj) elif member == 'reverse': assertion(not argvals, 'does not take any arguments') obj.reverse() |