When the target is a channel it is not in, it would treat it as a user;
which, if userCapabilityRequired is empty, would unconditionally send it
to a channel.
This would usually result in an error, that would be logged,
hence the loop.
Caused by 'rss announce add' triggering headline announces, that would
delay the execution of the 'remove' commands.
Thanks to @mapreri and @Unit193 for help in reproducing the issue
and confirming the patch.
This is because the recommended method ('owner ircquote nickserv register mypassword bot@example.com')
does not work on charybdis, as Limnoria inserts a colon
before the trailing argument and Charybdis' m_alias module
does not parse commands using the IRC syntax, so it
considers the leading colon to be part of the email address.
The alternative would be to change the recommended command to:
'owner ircquote PRIVMSG nickserv :register mypassword bot@example.com'
but it is prone to typos, so I think we should avoid it.
feedparser should always catch the error, but someone reported it doesn't
catch this error on TLS cert issues:
```
Traceback (most recent call last):
File "/usr/lib/python3.8/threading.py", line 932, in _bootstrap_inner
self.run()
File "/usr/lib/python3.8/threading.py", line 870, in run
self._target(*self._args, **self._kwargs)
File "/home/falso/virtualenv/limnoria/lib/python3.8/site-packages/supybot/plugins/RSS/plugin.py", line 86, in newf
f(*args, **kwargs)
File "/home/falso/virtualenv/limnoria/lib/python3.8/site-packages/supybot/plugins/RSS/plugin.py", line 351, in update_feeds
self.update_feed_if_needed(feed)
File "/home/falso/virtualenv/limnoria/lib/python3.8/site-packages/supybot/plugins/RSS/plugin.py", line 337, in update_feed_if_needed
self.update_feed(feed)
File "/home/falso/virtualenv/limnoria/lib/python3.8/site-packages/supybot/plugins/RSS/plugin.py", line 311, in update_feed
d = feedparser.parse(feed.url, etag=feed.etag,
File "/home/falso/virtualenv/limnoria/lib/python3.8/site-packages/feedparser/api.py", line 214, in parse
data = _open_resource(url_file_stream_or_string, etag, modified, agent, referrer, handlers, request_headers, result)
File "/home/falso/virtualenv/limnoria/lib/python3.8/site-packages/feedparser/api.py", line 114, in _open_resource
return http.get(url_file_stream_or_string, etag, modified, agent, referrer, handlers, request_headers, result)
File "/home/falso/virtualenv/limnoria/lib/python3.8/site-packages/feedparser/http.py", line 158, in get
f = opener.open(request)
File "/usr/lib/python3.8/urllib/request.py", line 525, in open
response = self._open(req, data)
File "/usr/lib/python3.8/urllib/request.py", line 542, in _open
result = self._call_chain(self.handle_open, protocol, protocol +
File "/usr/lib/python3.8/urllib/request.py", line 502, in _call_chain
result = func(*args)
File "/usr/lib/python3.8/urllib/request.py", line 1393, in https_open
return self.do_open(http.client.HTTPSConnection, req,
File "/usr/lib/python3.8/urllib/request.py", line 1354, in do_open
r = h.getresponse()
File "/usr/lib/python3.8/http/client.py", line 1347, in getresponse
response.begin()
File "/usr/lib/python3.8/http/client.py", line 307, in begin
version, status, reason = self._read_status()
File "/usr/lib/python3.8/http/client.py", line 268, in _read_status
line = str(self.fp.readline(_MAXLINE + 1), "iso-8859-1")
File "/usr/lib/python3.8/socket.py", line 669, in readinto
return self._sock.recv_into(b)
File "/usr/lib/python3.8/ssl.py", line 1241, in recv_into
return self.read(nbytes, buffer)
File "/usr/lib/python3.8/ssl.py", line 1099, in read
return self._sslobj.read(len, buffer)
socket.timeout: The read operation timed out
```
So let's catch the error just in case, so it doesn't block all other
feeds.
It mistakenly used the bot's nick as target when the message is in private,
so 'more' after a private message always answered the user did not send
a command before (because said command was attributed to the bot)
