simplify output options for zfind

[icornelius]

Output of zfind is controlled with options of the form --show-<FIELD>, e.g. --show-title, --show-summary, --show-bibkey. Usage and documentation would be simplified if the syntax were changed to

--show [field]...

The option --show, without arguments, would be synonymous with the current --show-all.

[gkthiruvathukal]

Are you thinking something like --show f1:f2:f3, e.g. --show title:summary?

[gkthiruvathukal]

Specific delimiter to be discussed with @icornelius.

[icornelius]

Or just a space as delimiter?

[gkthiruvathukal]

We can work on this, @icornelius!

I want to turn the entire suite into an information tool (+ some other ideas related to generative AI). Publishing is a separate step than can be achieved primarily by transformation. Possibly outputs could include JSON, XML or YAML itself. Then the user can postprocess at will.