general/2249: SSI regex error: /^$/ should only match undef'd or empty vars

[Peter Jakobi <ja...@informatik.tu-muenchen.de>]

>Number:         2249
>Category:       general
>Synopsis:       SSI regex error: /^$/ should only match undef'd or empty vars
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    apache
>State:          open
>Class:          sw-bug
>Submitter-Id:   apache
>Arrival-Date:   Mon May 18 23:40:00 PDT 1998
>Last-Modified:
>Originator:     jakobi@informatik.tu-muenchen.de
>Organization:
apache
>Release:        1.2.5 onward
>Environment:
Linux, Kernel 2.0.x, binary distribution from 
SuSE 5.2 (apassl.*)
>Description:
<!--#if expr="$A = /^$/" --> 
(sp:)?) in 1.2.0 worked fine. However with newer
releases (1.2.5 and 1.2.6), above line seems
to be always true instead of just matching 
empty strings (or undefined variables).
>How-To-Repeat:
Output contains 12 on 1.2.0, and no date on 1.2.5+.
Hmmm.

<!--#set var="PRIMARY_LANG" value="e" -->
<!--#set var="LAST" value="12" -->
 
<!--#if expr="$PRIMARY_LANG = e && $LAST = /^$/" -->
   <!--#set var="LAST" value="No date available" -->
<!--#endif -->
 
<!--#if expr="$PRIMARY_LANG = e" -->
<!--#if expr="$DOCUMENT_NAME = e_home.shtml" -->
<br><font color="red">Last Update: <!--#echo var="LAST"--></font>
<!--#else -->
<h1><b><i><font color="#FF8000"><!--#echo var="TITLE"--></font></i></b></h1>
<font color="red">Last Update: <!--#echo var="LAST"--></font>
<!--#endif -->
<!--#endif -->
 
>Fix:
Have a look at regex, content of new vars, ssi...
>Audit-Trail:
>Unformatted:
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