[Plugin: Twitter Widget Pro] Problem with tweet including link

You really shouldn’t modify the plugin code like that. Instead you should use the widget_twitter_content filter to add your link. Then you’ll need to remove the existing autolinking by removing those filters. It should all be done from another plugin or from your theme’s functions.php file so you don’t break future upgrades. I haven’t tested it, but code like this should work:

function range_plugins_loaded() {
	// Instantiate Twitter Widget
	$wpTwitterWidget = wpTwitterWidget::getInstance();

	// Remove auto-linking
	remove_filter( 'widget_twitter_content', array( $wpTwitterWidget, 'linkTwitterUsers' ) );
	remove_filter( 'widget_twitter_content', array( $wpTwitterWidget, 'linkUrls' ) );
	remove_filter( 'widget_twitter_content', array( $wpTwitterWidget, 'linkHashtags' ) );
	add_filter( 'widget_twitter_content', 'range_link_whole_tweet', null, 2 );
}
add_action( 'plugins_loaded', 'range_plugins_loaded' );

function range_link_whole_tweet( $tweet_text, $tweet ) {
	return "<a href='http://twitter.com/{$tweet->user->screen_name}/statuses/{$tweet->id_str}'>{$tweet_text}</a>";
}

Again, you don’t want to directly edit the plugin because you’ll have to re-do your edits every time I release an update! This way you’re changes will continue to work.