[IO-611] FilenameUtils.normalize does not sanitize multiple slashes after prefix

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.6
• Fix Version/s: 2.12.0
• Assignee: Unassigned
• Reporter: Urvanov
• Created: 01/Aug/19 13:59
• Updated: 12/Sep/22 15:15
• Resolved: 12/Sep/22 15:15

Description

FilenameUtils.#normalize states in javadoc that //foo//./bar becomes /foo/bar

System.out.println(FilenameUtils.normalize("//foo//./bar"));
System.out.println(FilenameUtils.normalize("\\\\foo\\\\.\\bar"));

Result:

//foo//bar
//foo//bar

So, javadoc says, that it should be /foo/bar. I think, that //foo is prefix, so it should be //foo/bar. But in real life it becomes the third way (//foo//bar).

 

I think we should fix javadoc and the code. The correct result should be //foo/bar