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Understanding Source Code

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Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.

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Line Code
1666                if (strpos($_SERVER['HTTP_USER_AGENT'], 'Firefox') !== false)
1667                     $link .= 'setTimeout(a,0);';
1668                else
1669                     $link .= 'a();';
1670
1671                $link .= "void(0);";
1672
1673      $link = str_replace(array("\r", "\n", "\t"),  '', $link);
1674
1675      return apply_filters('shortcut_link', $link);
1676 }
1677
1678 /**
1679  * Retrieve the site url.
1680  *
1681  * Returns the 'site_url' option with the appropriate protocol,  'https' if
1682  * is_ssl() and 'http' otherwise. If $scheme is 'http' or 'https', is_ssl() is
1683  * overridden.
1684  *