Frank from WPEngineer explains how to make pretty URLs for the WordPress search function. Also take a look in the comments on the post as Chuck Reynolds provides a snippet of code you can place in your htaccess file to accomplish the same thing.
Or with WordPress Rewrite Rules in functions.php :
function feed_dir_rewrite( $wp_rewrite ) {
$feed_rules = array( 'search/(.+)' => 'index.php?s=' . $wp_rewrite->preg_index(1));
$wp_rewrite->rules = $feed_rules + $wp_rewrite->rules;
}
add_filter( 'generate_rewrite_rules', 'feed_dir_rewrite' );
Another quality find – thank you for bringing this to my attention
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Here’s a better way:
RewriteCond %{QUERY_STRING} s=(.*)
RewriteRule ^$ /search/%1? [R,L]
That will do more what people are expecting, I think.