mod_rewrite/6805: Regex back-reference not working with RewriteMap

[Billy Choy <bi...@ss.qesosa.edu.hk>]

>Number:         6805
>Category:       mod_rewrite
>Synopsis:       Regex back-reference not working with RewriteMap
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    apache
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   apache
>Arrival-Date:   Mon Nov 06 20:50:00 PST 2000
>Closed-Date:
>Last-Modified:
>Originator:     billy@ss.qesosa.edu.hk
>Release:        1.3.14
>Organization:
apache
>Environment:
Linux 2.2.17
>Description:
The following used to work in Apache 1.3.12:
...
RewriteCond %{REQUEST_URI} ^/([a-zA-Z\-]+)(/.*)?$
RewriteCond ${langtoext:%1} !=""
...

Similarly:
...
RewriteRule ^/([a-zA-Z\-]+)(/.*)?$ $2 [E=LANG_NAM:$1,E=LANG_EXT:${langtoext:$1}]
...

In either case, ${langtoext:XX} returns nothing in Apache 1.3.14
>How-To-Repeat:

>Fix:

>Release-Note:
>Audit-Trail:
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