The URL should be reconstructed from scratch, or at least discard unrecognized parameters.
(Consideration: Perhaps it's good to allow dormant features that won't be stripped out by versions that don't understand the format. One option would be only to strip out paramters for forum links.)
Current behaviour:
The URL should be reconstructed from scratch, or at least discard unrecognized parameters.
(Consideration: Perhaps it's good to allow dormant features that won't be stripped out by versions that don't understand the format. One option would be only to strip out paramters for forum links.)