[Plugin: Live Comment Preview] any updates for WP 2.6 and 2.7?

I may have almost figured out #2 after finding the right functions in wp-includes/pluggable.php
I just wish these functions were documented somewhere.

I ended up changing a few lines and adding a new variable, $gravatar_show. Here are the relevant lines of code:

// Gravatar settings
	$gravatar_size = 64;
	$gravatar_show = get_option('show_avatars'); // showing or hiding avatars can be set in the admin panel under Settings - Discussion
	$gravatar_default = get_option('avatar_default'); // The default avatar style can be chosen under Settings - Discussion
	// $gravatar_default = 'https://www.gravatar.com/avatar/ad516503a11cd5ca435acc9bb6523536'; // or put a URI to your custom default image here
	$gravatar_rating = get_option('avatar_rating');

	// Customize this string if you want to modify the preview output
	// %1 - author's name (as hyperlink if available)
	// %2 - comment text
	// %3 - gravatar image url
	$previewFormat = '
		<ol class="commentlist" style="clear: both; margin-top: 3em;">
			<li id="comment-preview" class="alt" style="overflow: hidden;">
				<div class="comment-author vcard">';
	if ($gravatar_show) {
	$previewFormat .= '
					<img src="%3" alt="" class="avatar avatar-' . $gravatar_size . '" width="' . $gravatar_size . '" height="' . $gravatar_size . '"/>';
	}
	$previewFormat .= '
					<span class="fn n">%1</span>
				</div>
				<div class="comment-meta">Posted (date) at (time) <span class="meta-sep">| Permalink</div>
				%2

		';

The preview format is sort-of customized to my Sandbox theme.

// You shouldn't need to edit anything else.

	ob_start ("ob_gzhandler"); //compress with gzip if possible
	header('Content-type: text/javascript');

<?php
		if ($gravatar_show) :
		?>
	var user_gravatar = '<?php echo addslashes($user_gravatar); ?>';
	var gravatar = '<?php echo addslashes($gravatar_default); ?>?';
	if (eml != '') {
		gravatar = 'https://www.gravatar.com/avatar/' + hex_md5(eml) + '?d=<?php echo urlencode($gravatar_default); ?>&amp;';
	}
	else if (user_gravatar != '') {
		gravatar = user_gravatar + '?d=<?php echo urlencode($gravatar_default); ?>&amp;';
	}

	gravatar += 's=<?php echo $gravatar_size; ?>';

    <?php
	if (!empty($gravatar_rating)) {
		?>
		gravatar += '&amp;r=<?php echo urlencode($gravatar_rating) ?>';
		<?php
	}
		endif;

    $previewFormat = str_replace("\r", "", $previewFormat);
    $previewFormat = str_replace("\n", "", $previewFormat);
    $previewFormat = str_replace("'", "\'", $previewFormat);
    $previewFormat = str_replace("%1", "' + name + '", $previewFormat);
    $previewFormat = str_replace("%2", "' + cmnt + '", $previewFormat);
		if ($gravatar_show) {
			$previewFormat = str_replace("%3", "' + gravatar + '", $previewFormat);
		}
    $previewFormat = "'" . $previewFormat . "';\n";
    ?>

Sorry for the mess… I’ll post a link as soon as I upload it to my server.
https://noisychaos.com/external/wp-work/live-comment-preview.zip

oops