[Wordpress]Regex on searchform - regex

Question

I have to tweak the searchform from my wordpress theme, because it wont allows me to use accents such as é/è/à/ù etc, I dont to make them non-special chars and I thought about using Regex but cant figure out how/where to put the regex snippet.
Here is the page code :
do_action( 'mytheme_before_searchform' ); ?>
<form role="search" method="get" id="searchform" action="<?php echo home_url( '/' ); ?>">
<div class="row collapse">
<?php do_action( 'mytheme_searchform_top' ); ?>
<div class="small-11 columns">
<input type="text" value="" class="search-form" name="s" id="s" placeholder="SEARCH">
</div>
<?php do_action( 'mytheme_searchform_before_search_button' ); ?>
<?php do_action( 'mytheme_searchform_after_search_button' ); ?>
</div>
Any idea how I should proceed ?
Thanks

Answer 1

You have to put it on your theme's function file. In my case the form is redirected to the wp page /google-search (permalink), like this:
function add_rewrite_rules($aRules) {
$aNewRules = array('google-search/([^/]+)/?$' => 'google-search?pagename=page-google-search&q=$matches[1]');
$aRules = $aNewRules + $aRules;
return $aRules;
}
And i have registered the q var so wp allows it to be passed on the url.
Hope this help!