350556 - percent-encoded host part of URL is handled contrary to RFC 3986

Status: RESOLVED DUPLICATE of bug 309671

(Firefox :: Address Bar, defect)

Description

[Dwayne C. Litzenberger]

User-Agent:       Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.8.0.4) Gecko/20060406 Firefox/1.5.0.4 (Debian-1.5.dfsg+1.5.0.4-1) XpcomViewer/0.9
Build Identifier: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.8.0.4) Gecko/20060406 Firefox/1.5.0.4 (Debian-1.5.dfsg+1.5.0.4-1) XpcomViewer/0.9

According to RFC 3986, the host part of an URL is allowed to be percent-encoded, but Firefox/Mozilla don't do the percent-decoding like they should.  Thus, URLs like http://w%77w%7emozilla%7eorg/ don't work.  Konqueror 3.5.3 and MSIE 6.0 both do the right thing.

Reproducible: Always

Steps to Reproduce:
1. Type in http://w%77w.mozilla.org/ or http://www%2emozilla%2eorg/ into the address bar, or click a link that refers to one of those URLs, or put one of those URLs into the url() section of a CSS style sheet.

Actual Results:  
"Firefox can't find the server at w%77w.mozilla.org"

Expected Results:  
The browser should navigate to http://www.mozilla.org/

This problem occurs on the following builds:

- Debian GNU/Linux's i386 firefox (1.5.dfsg+1.5.0.4-1) package: "Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.8.0.4) Gecko/20060406 Firefox/1.5.0.4 (Debian-1.5.dfsg+1.5.0.4-1) XpcomViewer/0.9"

- Firefox 1.5.0.6 (Win32) "Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.8.0.6) Gecko/20060728 Firefox/1.5.0.6"

- Nightly Mozilla build (Win32): "Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.8b2) Gecko/20050702"

- Nightly Firefox build (Win32): "Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.9a1) Gecko/20060828 Minefield/3.0a1"

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This is an edge case.  I found this bug trying to develop a standards-compliant workaround for MSIE's improper handling of backslash-escaping within CSS url(...) values.  Still, Konqueror and MSIE (!) handle this correctly, and it would be great if Firefox and Mozilla did also.

This might not be a bug in the address bar so much as it's a bug in Gecko, but Bugzilla doesn't seem to have a "Gecko" option (at least, not one that's easy to find).

Comment 1

[Dwayne C. Litzenberger]

This is a dupe of bug #309671.  I didn't find it originally because I searched for the wrong terms.  Sorry.

*** This bug has been marked as a duplicate of 309671 ***