Bug 4034

Summary: URLs with square brackets are shortened
Product: Claws Mail (GTK 2) Reporter: Hans <bugzilla.hivomail>
Component: UIAssignee: users
Status: RESOLVED INVALID    
Severity: normal    
Priority: P3    
Version: 3.13.2   
Hardware: PC   
OS: Linux   

Description Hans 2018-06-09 21:14:31 UTC 
In Claws Mail 3.13.2 (this is what my distribution provides, sorry), URLs like

https://www.frankfurt.de/sixcms/detail.php?id=2805&_ffmpar[_id_inhalt]=54568

are not correctly detected. In this example, the URL is shortened to

https://www.frankfurt.de/sixcms/detail.php?id=2805&_ffmpar

You can still see the full URL, but only this part gets underlined and works as a link. If square brackets are allowed in URLs this is a bug.

I noticed this behaviour with emails in my outbox and my drafts folder. Didn't check with incoming emails.
Comment 1 Andrej Kacian 2018-06-09 21:48:13 UTC 
Square brackets should not be used like this in an URL. Looks like people at frankfurt.de should have a look at RFC 3986, where in section 3.2.2, it says:

  A host identified by an Internet Protocol literal address, version 6
  [RFC3513] or later, is distinguished by enclosing the IP literal
  within square brackets ("[" and "]").  This is the only place where
  square bracket characters are allowed in the URI syntax.

https://tools.ietf.org/html/rfc3986#section-3.2.2
Comment 2 Hans 2018-06-10 16:47:33 UTC 
Thank you, Andrej! Will inform the webmaster and see if he / she cares.