### Web browsers
It seems all current browsers (Firefox 39, Chromium 31 and Opera 30) have no issue with our url encoded single quote ('), but Opera 12 falls into a redirect loop and finally displays a blank page. I know Opera 12.16 is a browser which is becoming old, I’m accustomed to.
This is similar to T105265 and probably comes from 155d555b83eca6403e..
In the Opera Developer Tools (Dragonfly):
1. Opera fetches URL: https://fr.wikipedia.org/wiki/O'Hare_Branch
2. MediaWiki server redirects to: https://fr.wikipedia.org/wiki/O%27Hare_Branch
3. Opera enforces the url to have an unencoded single quote and before fetching from network rewrites the url as: https://fr.wikipedia.org/wiki/O'Hare_Branch
4. Back to #1.
For now I have not searched if the single quote has the same status in RFC 3986 than the tilde of T105265.
### Search engines
(merged from T112425)
>>! @eranroz wrote
> New pages with apostrophe characters aren't indexed by external web search engines.
>
> __Exmples__
> English Wikipedia examples:
> * <https://en.wikipedia.org/wiki/Conference_USA_Men%27s_Soccer_Freshman_of_the_Year> (works in Bing, doesn't work in Google and Baidu)
> * <https://en.wikipedia.org/wiki/Holland%27s_Next_Top_Model_(cycle_8)> (works in Bing, doesn't work in Google and Baidu)
> Hebrew Wikipedia examples:
> * https://he.wikipedia.org/wiki/%D7%9E%D7%99%D7%A7%D7%94_%D7%91%D7%96'%D7%96'%D7%99%D7%A0%D7%A1%D7%A7%D7%99 (created at 30 August 2015; doesn't yield results in Google and Bing)
> * https://he.wikipedia.org/wiki/%D7%92'%D7%A8%D7%9E%D7%99_%D7%A7%D7%95%D7%A8%D7%91%D7%99%D7%9F (created at 14 August 2015; doesn't yield results in Bing and Google)
>
>
> __See also__
> * https://duck.co/forum/thread/15098/hebrew-wikipedia-articles-with-in-their-names
> * https://productforums.google.com/d/msg/webmasters/wTPr_r_73sc/KyYsScvOnB4J
### Google Translate
(merged from T122786)
>>! @Schnark wrote:
> Trying to translate https://fr.wikipedia.org/wiki/O'Hare_Branch via https://translate.google.com/translate?hl=en&sl=fr&tl=en&u=https%3A%2F%2Ffr.wikipedia.org%2Fwiki%2FO%27Hare_Branch&sandbox=1 just gives a complain about an infinite loop.