TYPO3 Core

I think there is a bug with inconsistent url encoding inside the redirect extension.

I want to match an url with parameters like url?foo[bar]=42
So i use #^/url\?foo%5Bbar%5D=([0-9]+)# as regex and as new target /path2/$1

The thing is, this will not work and outputs the target path without replacements.

After some debugging i found out that the url is first matched with the urldecoded version "url?foo%5Bbar%5D=42".
But for the later preg_match which generates the capture groups to build the target uri, it is matched against "url?foo[bar]=42".

As a workaround i now use as regex #^/url\?foo(?:%5B|\[)bar(?:%5D|\]=([0-9]+)# which matches in both cases.

I found a related task #94934 which introduced this change.