Prefix search Option

Introduced in release: 7 Update 4

The  Indexer option specifies which, if any, search parameters sent to an external   should be preceded by a "&#x2a;", so that a search for   would match " "  as well as " ". The search parameter will not be preceded by the &#x27;&#x2a;&#x27; character, if it contains a space character or a double quote character or a opening parentheses in the beginning or a closing parenthesis at the end. The value given should be one or more of  separated by one or more spaces. Use with caution as this imposes a significant load on the search engine. The default is the empty string.

(Note that the meanings of  and   could be considered reversed; read carefully before setting.)

When the internal search engine is used, a substring match is always performed and this option is ignored.

See also:
 * substring_search Option
 * suffix_search Option
 * Indexer options