00117: PmWiki generating null llinks ('/')

Summary: PmWiki generating null llinks ('/')
Created: 2004-10-27 01:45
Status: Closed - fixed in 2.0.devel19
Category: Bug
From: jr
Assigned:
Priority:
Version: 2.0 dev 17
OS: all

Description: At least, I think it's a bug. Description and example follow.

 $PageNameChars = '-_~[:alnum:]';
     $NamePattern = '[[:upper:]\\d][\\w]*(?:[-~]\\w+)*';
     Markup('[[_','<links','/\[\[_([^\|\]]+)\]\]/e',
    "'[[' . preg_replace('/~.*$/','',FmtPageName('\$Name',\$pagename)) .
    PSS('~$1 | ~$1') . ']]'");
 

If I write [[_Child]] this should produce a link to PITS.00117~Child. Instead it produces a link to '/' -- a null page. It is definitely generating [[PITS.00117~Child | ~Child]], but PmWiki doesn't like it. However, the following code

 $PageNameChars = '-_~[:alnum:]';
    $NamePattern = '[[:upper:]\\d][\\w]*(?:[-~]\\w+)*';
    Markup('[[_','<links','/\[\[(_[^\|\]]+)\]\]/e',
    "'[[' . preg_replace('/_.*$/','',FmtPageName('\$Name',\$pagename)) .
    PSS('$1 | $1') . ']]'");
 

correctly produces a link to the page PITS.00117_Child. Either it's a bug or something so obvious I can't see it. I get the same problem when using other characters, like a \* instead of _.

Array
(
    [post_max_size] => 64M
    [$_POST keys] => 
    [$_REQUEST keys] => n
    [$_SERVER] => Array
        (
            [CONTEXT_DOCUMENT_ROOT] => /home/pmwiki/public_html
            [CONTEXT_PREFIX] => 
            [DOCUMENT_ROOT] => /home/pmwiki/public_html
            [GATEWAY_INTERFACE] => CGI/1.1
            [HTTPS] => on
            [HTTP_ACCEPT] => */*
            [HTTP_ACCEPT_ENCODING] => gzip, br, zstd, deflate
            [HTTP_HOST] => www.pmwiki.org
            [HTTP_REFERER] => https://www.pmwiki.org/PITS/00117
            [HTTP_USER_AGENT] => Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
            [HTTP_X_HTTPS] => 1
            [PATH] => /bin:/usr/bin
            [PHP_INI_SCAN_DIR] => /opt/cpanel/ea-php70/root/etc:/opt/cpanel/ea-php70/root/etc/php.d:.
            [QUERY_STRING] => n=PITS%2f00117
            [REDIRECT_HTTPS] => on
            [REDIRECT_QUERY_STRING] => n=PITS%2f00117
            [REDIRECT_SCRIPT_URI] => https://www.pmwiki.org/wiki/PITS/00117
            [REDIRECT_SCRIPT_URL] => /wiki/PITS/00117
            [REDIRECT_SSL_TLS_SNI] => www.pmwiki.org
            [REDIRECT_STATUS] => 200
            [REDIRECT_UNIQUE_ID] => afMeS548VkPKklYeBR_0CAAAAMM
            [REDIRECT_URL] => /wiki/PITS/00117
            [REMOTE_ADDR] => 216.73.216.25
            [REMOTE_PORT] => 29009
            [REQUEST_METHOD] => GET
            [REQUEST_SCHEME] => https
            [REQUEST_URI] => /wiki/PITS/00117
            [SCRIPT_FILENAME] => /home/pmwiki/public_html/index.php
            [SCRIPT_NAME] => /index.php
            [SCRIPT_URI] => https://www.pmwiki.org/wiki/PITS/00117
            [SCRIPT_URL] => /wiki/PITS/00117
            [SERVER_ADDR] => 23.254.203.248
            [SERVER_ADMIN] => webmaster@pmwiki.org
            [SERVER_NAME] => www.pmwiki.org
            [SERVER_PORT] => 443
            [SERVER_PROTOCOL] => HTTP/1.1
            [SERVER_SIGNATURE] => 
            [SERVER_SOFTWARE] => Apache
            [SSL_TLS_SNI] => www.pmwiki.org
            [TZ] => America/Los_Angeles
            [UNIQUE_ID] => afMeS548VkPKklYeBR_0CAAAAMM
            [PHP_SELF] => /index.php
            [REQUEST_TIME_FLOAT] => 1777540683.7316
            [REQUEST_TIME] => 1777540683
            [argv] => Array
                (
                    [0] => n=PITS%2f00117
                )

            [argc] => 1
        )

)