[SallyK]

For the last few years I've been using a custom column which somebody posted here, which makes the title as it appears in the sidebar a link to where the text was downloaded from.

Recently I've started getting an error message, instead of the link, and I was hoping somebody might be able to help me with what I need to change to make it work again. Thank you to anyone who can help.

The error message I'm getting is:
EXCEPTION: Formatter: Missing closing parenthesis near ';'

and the custom column command is:

{identifiers:'
    strcmp(
        assign(title, field('title'));
        substr($, 0, 4),
        'url:',
        title,
        strcat('<a href="', substr($, 4, 0), '">', title, '</a>'),
        title,
    )
'}