Stuart Duff - a11n

Single Post Search Result is a small WordPress plugin that will redirect your search result if there is only a single matching result to the actual post instead of the search results page.

Single Post Search Result

I'm not redirected directly to a single post result and plus get that warning.

Warning: call_user_func_array() expects parameter 1 to be a valid callback, function 'skeleton_single_post_search_result' not found or invalid function name in /home/clients/fc2d20bb6ab959323d7c657f13b5ffbf/libertereligieuse/wp-includes/plugin.php on line 524

Great idea but get a warning and no result

Redirects a single search result to the single post page.

The Krotek

If you have an IPS Community Suite (former IP.Board) based forum, this extension is a must. It’ll allow your vititors to search for forum posts and topics right from your WordPress site. A lot of options, available in Premium version, will also give you full control on search process.
STANDARD FEATURES
<ul>
<li>Compatible with all versions of IPS Community Suite 4.</li>
<li>Allows you to search for IP.Board (IPS Community) content from WordPress.</li>
<li>Follows IP.Board SEF URLs structure.</li>
<li>Applies all necessary WordPress filters to search results.</li>
<li>Template independent.</li>
</ul>
PREMIUM FEATURES
<ul>
<li>Limit number of search results (useful for large databases).</li>
<li>Sort results by topic title, number of views or post date.</li>
<li>Search for exact phrase or any keyword from the list.</li>
<li>Position results before or after WordPress posts. Or even replace them!</li>
<li>Limit search by topic titles only (useful for large databases).</li>
<li>Search in member names as well.</li>
<li>Include closed topics in search results.</li>
<li>Show or hide parent Forum category before topic name.</li>
<li>Set custom thumbnail for search results.</li>
<li>Exclude forums from search results or include only certain forums.</li>
</ul>
You can purchase Premium version <a href="https://thekrotek.com/wordpress-extensions/ipboard-search" rel="nofollow ugc">here</a>.

IP.Board Search

Allows you to search for IPS Community Suite (former IP.Board) topics and posts right from WordPress.

Single Post Search Result vs IP.Board Search