exclamation mark bang do not work in wordpress directory structure

[here]

Installed with exclamation mark or bang in directory structure, fails when saving new page:

​http://localhost/code/!wp-test/<wp-files>

works fine with:

​http://localhost/code/wp-test/<wp-files>

tested only with xampp 1.7 on win xp

Please confirm ;) --

see also #3206

Can you explain what you mean by "fails when saving new page", please?

moving to 2.9 from lack of patch

Changed Permalink Structure to

/bang!bang!/%year%/%monthnum%/%day%/%postname%/

which runs into errors when WP makes a redirect. seems to me that the redirect function is not properly working. again (?) another esoteric behavior.

In a second test I configured WordPress to be accessible under the following address:

http://example.com/bang!bang!beauty!/

with each redirect, the path is reduced to bangbangbeatuy, the exclamation marks get stripped out.

Yes, ! (Exclamation mark) is a valid and safe char in an URI.

Someone has forgotten to add that char to the whitelist. Thanks for reporting.

(In [11147]) Exclamation mark is a valid and safe character in a URI. props hakre. fixes #8904