Fix for "read more" comment tags in Facebook Page Publish

This may have something to do with how my more tag is inline amongst some other HTML, but in either case, here’s a quick fix to ensure that these do not end up posted to Facebook and that the text is cut at the right position:

Replace:

// Facebook link description allows max. 420 characters:
if (strlen($message) >= 420) {
$last_space_pos = strrpos(substr($message, 0, 417), ' ');
$message = substr($message, 0, $last_space_pos).'...';
}


With the following:


// Facebook link description allows max. 420 characters:
if (strpos($message, '<!--more-->') !== false) {
$message = substr($message, 0, strpos($message, '<!--more-->'));
}
if (strlen($message) >= 420) {
$last_space_pos = strrpos(substr($message, 0, 417), ' ');
$message = substr($message, 0, $last_space_pos).'...';
}


http://wordpress.org/extend/plugins/facebook-page-publish/