↩ in URLs

Watching the log, though, I find one thing interesting:

It looks like Safari and Firefox encode the ↩ differently in URLs. I’m not sure which, if either, is “wrong ((I’m sure it’s in the HTTP spec, but I can’t be bothered looking it up right now.)),” but I found this interesting. When I was testing the ↩ in the URL, I only checked that it worked in Firefox and Safari. I didn’t think to check that they requested it the same way. I imagine Apache is doing the conversion here, but would other web servers do it as well?