Thanks.
When using first_non_empty, is there any performance difference between checking a default and custom column? Trying to figure out the optimal order for this (e.g. the more complex ones with multiple checks at the end).
Code:
program:
## Missing metadata
first_non_empty(
if !$formats then 'plus.png' fi,
if !$tags then 'tags.png' fi,
if !$languages then 'languages.png' fi,
if !$#booktype then 'catalog.png' fi,
if !$#pagecount then 'cover_flow.png' fi,
if !$#chaptercount && !'paperbook' in approximate_formats() then 'cover_flow.png' fi,
if $#booktype == 'Documentation & Manuals' && !$#manualtype then 'catalog.png' fi,
if $#kobostatus && $#kobostatus != 'Kobo Store' && !$#kobopath then 'snippets.png' fi,
)