[masp]

I've created a very useful custom column (built from other columns) that hold canonicalized author names: it works great (I used author links to hold the canonical form of any given name, and then this regex: {:'list_re(author_links(":", " & "), " & ", ".*?([^:]+):?$", "\1")'}). All is good, except that I had to use the "built form other columns" type rather than the "built from other columns, behaves like tags" type because the names may contain commas, which causes havoc with the tag-like behaviour. But as a result, when I look at my new category in the tag browser, it doesn't behave like a list: for multiple authors I see single entries such as "bob & jane & clare". So what I believe I need (but can't find) is a way to create a custom column that is "built from other columns" and "behaves like authors". I do see that if I create a "comma-separated text, like tags" custom column then I can set "contains names", which seems to do what I want (ie. make the separator & rather than ",") but is it possible to get that behaviour from the "built from other columns, behaves like tags" type? (ie. ampersands rather than commas as separator).

Thanks!

Mike