Examples:
* https://www.mediawiki.org/w/api.php?action=query&list=recentchanges&rcuser=%e2%80%8e192.0.2.0
* https://www.mediawiki.org/w/api.php?action=query&list=recentchanges&rcuser=%20192.0.2.0%20
* https://www.mediawiki.org/w/api.php?action=query&list=recentchanges&rcuser=_192.0.2.0_
versus
* https://www.mediawiki.org/w/api.php?action=query&list=recentchanges&rcuser=%E2%80%8EAnomie
* https://www.mediawiki.org/w/api.php?action=query&list=recentchanges&rcuser=%20Anomie%20
* https://www.mediawiki.org/w/api.php?action=query&list=recentchanges&rcuser=_Anomie_
----
#### Original report:
This started to happen before few days, but no for all IP addresses.
```
kizule@kizule:~/development/pywikibot-core$ python3 pwb.py patrol -usercontribs:'213.149.159.237' -ask
/home/kizule/development/pywikibot-core/pywikibot/config2.py:1138: _ConfigurationDeprecationWarning: "sysopnames" present in our user-config.py is no longer a supported configuration variable. Please inform the maintainers if you depend on it.
'depend on it.'.format(_key), _ConfigurationDeprecationWarning)
Processing user: 213.149.159.237
Newpages:
Loading Корисник:Zoranzoki21/patrol_whitelist
WARNING: API error baduser_rcuser: Invalid value "213.149.159.237" for user parameter "rcuser".
Traceback (most recent call last):
File "pwb.py", line 321, in <module>
if not main():
File "pwb.py", line 316, in main
run_python_file(filename, [filename] + args, argvu, file_package)
File "pwb.py", line 101, in run_python_file
main_mod.__dict__)
File "./scripts/patrol.py", line 505, in <module>
main()
File "./scripts/patrol.py", line 490, in main
bot.run(feed)
File "./scripts/patrol.py", line 286, in run
for page in feed:
File "./scripts/patrol.py", line 410, in api_feed_repeater
for page in generator:
File "/home/kizule/development/pywikibot-core/pywikibot/site.py", line 6627, in newpages
for pageitem in gen:
File "/home/kizule/development/pywikibot-core/pywikibot/data/api.py", line 2808, in __iter__
self.data = self.request.submit()
File "/home/kizule/development/pywikibot-core/pywikibot/data/api.py", line 2080, in submit
raise APIError(**result['error'])
pywikibot.data.api.APIError: baduser_rcuser: Invalid value "213.149.159.237" for user parameter "rcuser". [help:See https://sr.wikipedia.org/w/api.php for API usage. Subscribe to the mediawiki-api-announce mailing list at <https://lists.wikimedia.org/mailman/listinfo/mediawiki-api-announce> for notice of API deprecations and breaking changes.]
CRITICAL: Exiting due to uncaught exception <class 'pywikibot.data.api.APIError'>
kizule@kizule:~/development/pywikibot-core$
```
**Version of pywikibot:**
```
kizule@kizule:~/development/pywikibot-core$ python3 pwb.py version
/home/kizule/development/pywikibot-core/pywikibot/config2.py:1138: _ConfigurationDeprecationWarning: "sysopnames" present in our user-config.py is no longer a supported configuration variable. Please inform the maintainers if you depend on it.
'depend on it.'.format(_key), _ConfigurationDeprecationWarning)
Pywikibot: [ssh] pywikibot-core (e78bbf3, g11512, 2019/09/10, 11:30:54, ok)
Release version: 3.1.dev0
requests version: 2.21.0
cacerts: /etc/ssl/certs/ca-certificates.crt
certificate test: ok
Python: 3.7.3 (default, Aug 20 2019, 17:04:43)
[GCC 8.3.0]
PYWIKIBOT_DIR: Not set
PYWIKIBOT_DIR_PWB:
PYWIKIBOT_NO_USER_CONFIG: Not set
Config base dir: /home/kizule/development/pywikibot-core
Usernames for family "wikipedia":
sr: Zoranzoki21 (also sysop)
kizule@kizule:~/development/pywikibot-core$
```