SEARCH box content - expanded

I noticed my search box is limited at 20 characters.

I'd like to know how to expand this limit to 40 characters (e.g.), in order to allow searches with bigger expressions used in my website.

You can change max length from search module parameters.

I did it, but the result was a largger box in pixels...
I just want more characters...

open

language\en-GB\en-GB.localise.php

you will see function:

public static function getUpperLimitSearchWord() {
return 20;
}

replace 20 with bigger value.

Do the same for other languages