Bug: htmlentities messes code blocks

[intelx86]

Greek characters are unicode supported. If entered as regulart text, they make no difference than other text.
If entered in a <code> block they are presented with their entity form. This results to

Code:

π = 3.14
φ = 1.62

instead of

Code:

π = 3.14
φ = 1.62

The problem lies into safe_slash_html() function inside admin/inc/basic.php where htmlentities is used. htmlentities() and htmlspecialcharacters() are identical in all ways, except with htmlentities(), all characters which have HTML character entity equivalents are translated into these entities.

Fix:

FIND

Code:

function safe_slash_html($text) {
    if (get_magic_quotes_gpc()==0) {
        $text = addslashes(htmlentities($text, ENT_QUOTES, 'UTF-8'));
    } else {
        $text = htmlentities($text, ENT_QUOTES, 'UTF-8');
    }
    return $text;
}

REPLACE, WITH

Code:

function safe_slash_html($text) {
    if (get_magic_quotes_gpc()==0) {
        $text = addslashes(htmlspecialchars($text, ENT_QUOTES, 'UTF-8'));
    } else {
        $text = htmlspecialchars($text, ENT_QUOTES, 'UTF-8');
    }
    return $text;
}