Almost pretty permalinks with non-ASCII characters do not work in Apache

[peaceablewhale]

Almost pretty permalinks (using PATH_INFO) with non-ASCII characters do not work in Apache; a not found error is returned. The same permalink works in IIS when UTF-8 is used for server variables. It also works when mod_rewrite is used.

[solarissmoke]

The problem is not just with Apache. Here's the issue: PATH_INFO is (according to the CGI spec) supplied url-decoded, but REQUEST_URI us url-encoded. !Wordpress does string comparisons on these two, which is fine when there are only ascii characters in the URL, but fails when there are others.

Here is a patch that works for me. I imagine it will need some testing to make sure the behaviour is consistent in all environments.

[peaceablewhale]

Patch breaks almost pretty permalinks in IIS. Trying to fix it.

[peaceablewhale]

Revised patch. Workaround now applies to Apache only.

[peaceablewhale]

Unfortunately, encoding PATH_INFO does not work either. I have reversed the patch logic so that we now decode REQUEST_URI instead. Verified effective in both IIS and Apache.

[peaceablewhale]

westi, I guess you may be the appropriate person to review this ticket, as I noticed your experience in resolving tickets related to servers~

[SergeyBiryukov]

This is caused by [15960] and can be fixed by the latest patches in #10249.

[SergeyBiryukov]

Not exactly a duplicate of the original #10249 bug, just related. 3.1 is the earliest affected version.

Still, 10249.4.patch​ fixes this.

[peaceablewhale]

How may unit test cases be made?

[nacin]

Keeping on the same path as #10249.

[chriscct7]

This and #10249 could be fixed and tested together probably considering comment:8