[tou.tv] Problem in VALID_URL regex for special features episodes

[oxidius3]

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If the purpose of this issue is a bug report, site support request or you are not completely sure provide the full verbose output as follows:

In youtube_dl/extractor/toutv.py, line 17 indicates valid urls for tou.tv
_VALID_URL = r'https?://ici\.tou\.tv/(?P<id>[a-zA-Z0-9_-]+(?:/S[0-9]+E[0-9]+)?)'

Some series have special features or extras that do not fit the regex.
Here's an examples : https://ici.tou.tv/l-age-adulte/S01C501

I'm not sure if modifying the regex is the only thing to do.

Thank you.

[dstftw]

https://ici.tou.tv/l-age-adulte/S01C501 fits the regex just fine.

[oxidius3]

Well specials episode to not download, they fallback on the first episode of the season, in this case both
https://ici.tou.tv/l-age-adulte/S01C501 and
https://ici.tou.tv/l-age-adulte/S01C502
Download https://ici.tou.tv/l-age-adulte/S01E01

I was under the impression it was becasue "S01C501" does not match the final group (?:/S[0-9]+E[0-9]+)?)

But it might be for another reason