[eschwartz]

2) That was the other error I "fixed".

{series:'in_list($, "&", "Perry Rhodan", $, strcat($, ' - '))'|_ | }{series:lookup(Perry Rhodan,,authors)}/{series_index:0>4s| | - }{title} - {authors}

Ah, screw that, GPM makes more sense:

program:

# return separator+authors if bad series isn't found, or return empty
various_authors=in_list(
	field('series'),
	'&',
	'Perry Rhodan',
	'',
	 strcat(' - ', field('authors'))
);
end_template=template('{series_index:0>4s| | - }{title} - {authors}');

start_template=test(
	field('series'),
	strcat(
		'_ ',
		field('series'),
		various_authors
	),
	field('authors')
);

strcat(start_template, '/', end_template);

P.S. 11:53 -- so almost.