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When set to 1 (which is the default), causes (:pagelist:) and (:searchresults:) to exclude listing any pages for which the browser does not currently have read authorization. Setting this to zero means that read-protected pages can appear in a listing, but can also speed up searches considerably (because page permissions do not need to be checked).
The function used to compare values when ordering a page list, for historical reasons the default is ‘strcasecmp‘ and sorts alphabetically and case insensitively. If you regularly order numbers or strings with numbers, you can set this variable to ‘strnatcasecmp‘ and the list will be sorted according to a natural order, case insensitively:

$PageListSortCmpFunction = 'strnatcasecmp';# "natural" sorting of pagelists

Or you can write here the name of a custom function you have defined. This is the general sorting function, for specific needs you can create specific functions, see CustomPagelistSortOrder.
An array of page name patterns to be required or excluded from search and pagelist results. In order to be included in a search listing or page listing, a page’s name must not match any pattern that is delimited by exclamation points (!) and must match all other patterns. See Cookbook:SearchPatterns.

# Limit all searches to Main group$SearchPatterns['default'][] = '/^Main\./';# Exclude the Main group from search results$SearchPatterns['default'][] = '!^Main\.!';# Exclude RecentChanges pages from search results$SearchPatterns['default'][] = '!\.(All)?RecentChanges$!';# Prevent a page from listing itself in (:pagelist:) or (:searchresults:)$SearchPatterns['default'][] = FmtPageName('!^$FullName$!', $pagename);
For example$SearchBoxOpt ['target'] = '$DefaultGroup.Search';
The HTML "type" attribute for the search field. Default is "text" which is valid HTML4. If your skin uses HTML5, you can change this to "search":$SearchBoxInputType = "search";
When set to 1, causes PmWiki to maintain a "link and word index" in $PageIndexFile which significantly speeds up categories, backlinks, and searches.
The location of the "page index" file for (:pagelist:), defaults to $WorkDir/.pageindex.
The name of a writable directory where PmWiki can cache results of (:pagelist:) directives to speed up subsequent displays of the same list. Default is empty, which disables the pagelist cache.

# Enable pagelist caching in work.d/$PageListCacheDir = 'work.d/';
The page to be used to format search results for ?action=search (unless the current page has a "searchresults" directive in it). This variable can be an array, in which case the first page found from the array is used.

# Simple use of page search form in the default group$PageSearchForm = '$DefaultGroup.Search';
# Use Search page in current group if it exists, otherwise use Site.Search$PageSearchForm = array('$Group.Search', '[=$[$SiteGroup/Search]=]');
The pages to be searched for a pagelist template specified by a fmt=#xyz parameter. Defaults to searching the current page, Site.LocalTemplates and Site.PageListTemplates.

# PMWiki default setupglobal $FPLTemplatePageFmt;$FPLTemplatePageFmt = array(    '{$FullName}',     '{$SiteGroup}.LocalTemplates',     '{$SiteGroup}.PageListTemplates');

It can be customized to look in other pages.

# Search a Group.Templates page as well as the Site templatesglobal $FPLTemplatePageFmt;$FPLTemplatePageFmt = array(    '{$Group}.Templates',    '{$SiteGroup}.LocalTemplates',    '{$SiteGroup}.PageListTemplates');

Or declare defaults for the template array:

# Search a Group.Templates page as well as the Site templatesglobal $FPLTemplatePageFmt;SDV($FPLTemplatePageFmt, array('{$FullName}',    '{$Group}.Templates',    '{$SiteGroup}.LocalTemplates', '{$SiteGroup}.PageListTemplates')   );
This variable controls how undefined {$$Variable} is processed in includes and PageList templates. If set to 0 (default), undefined {$$Variable}s are removed from the included section or template. If set to 1, undefined {$$Variable}s are displayed as is, with {$$…}. Note that PmWiki versions 2.2.13 and earlier kept unset include/template variables.
$EnableUndefinedTemplateVars = 0; # Delete unset raw template variables
$EnableUndefinedTemplateVars = 1; # Keep and print unset raw template variables

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