List Field Merge Tag Modifier to convert text URLs into clickable links

gk-urlify-list-fields.php

<?php // DO NOT COPY THIS LINE

add_filter( 'gform_merge_tag_filter', 'gv_list_columns', 30, 6 );
function gv_list_columns( $value, $merge_tag, $modifier, $field, $raw_value, $format ) {

	if ( $field->type == 'list' && $merge_tag != 'all_fields' && 'urlify' === $modifier ) {

		$values = unserialize( $raw_value );
		$output = '<ul>';

		foreach ( $values as $value ) {
			$output .= '<li><a href="'.$value.'">'.$value.'</a></li>';
		}

		$value = $output.'</ul>';

	}
    
	return $value;
}

Usage: {Listfield:1:urlify} where 'Listfield:1' is the proper Merge Tag for your List field (1 column) containing URLs