Filter content in show_text_block()

I want suggest this modify for the method show_text_block function:

This method is used in version 1.4.8

// SHOW TEXT BLOCK
function show_text_block($id, $plain = false, $atts = false)
{
	$id = apply_filters( 'text_blocks_show_text_block_id', $id );

	// IF ID IS NOT NUMERIC CHECK FOR SLUG
	if(!is_numeric($id))
	{
		$page = get_page_by_path( $id, null, 'text-blocks' );
		$id = $page->ID;
	}

	if( !$id ) return false;
	
	
	// LOOK FOR TEMPLATE IN THEME
	$template = isset($atts['template']) ? $atts['template'] : $id;
	$template = locate_template( array( "text-blocks-{$template}.php" ) );

    // Daniele: This filter is used from template to translate content for multilanguage
    $content = apply_filters('text_blocks_content', get_post_field( 'post_content', $id ), $id, $plain, $atts);
	
	// LOAD TEMPLATE IF FOUND
	if( $template )
	{
		ob_start();
		include( $template );
		$output = ob_get_contents();
		ob_end_clean();
		return $output;
	}

	// LOAD PLAIN CONTENT
	if($plain)
	{
		return apply_filters( 'text_blocks_shortcode_html', $content, $atts );
	}

	// APPLY 'the_content' FILTER TO BLEND WITH EVERYTHING ELSE
	$content = apply_filters( 'the_content', $content, $atts );
	return apply_filters( 'text_blocks_shortcode_html', $content, $atts, $id );
}

I’ve added this line

$content = apply_filters('text_blocks_content', get_post_field( 'post_content', $id ), $id, $plain, $atts);

For me it’s really helpful to increase performance when this plugin load content of multilanguage; For example: I use qTranslateX, the content page split language content like is [:en]En content[:it]IT content[:]

Adding my suggested filter I can filter loaded content in my template to return only the content with current language (and other minor fix related to qTranslateX).

Best regards,
Daniele