© and ™ not stripped from sanitize_title

[thomask]

© and ™ (© ™) and probably many other symbols are not stripped out when sanitizing title.

quick workaround:

function mc_sanitize_title( $title ) {
	return str_replace(array("%e2%84%a2", "%c2%a9"), "", $title);
}
add_filter('sanitize_title', 'mc_sanitize_title');

but i guess that there should be some most robust and standard solution, e.g. using PHP transliteration first and then removing anything but alphanumeric, coma and underscore like in this function

function friendly_url($raw_title) {
    $url = $raw_title;
    $url = preg_replace('~[^\\pL0-9_]+~u', '-', $url);
    $url = trim($url, "-");
    $url = iconv("utf-8", "us-ascii//TRANSLIT", $url);
    $url = strtolower($url);
    $url = preg_replace('~[^-a-z0-9_]+~', '', $url);
    return $url;
}

this should also create nice url even for special alphabets. (setlocale must be set, but imho it is somewhere in wordpress core)

[unsalkorkmaz]

​http://core.trac.wordpress.org/ticket/12361 related i think

[sivel]

Punting to 3.1.

[hakre]

I wonder if those chars should be stripped at all. They look valid in a posts, title, aren't they?

[SergeyBiryukov]

Merged into the patch in #10797.