Conditional Content more fine-grained

[JanPalasek]

Description

I would like to hide Conditional Content for html output, but show it in revealjs presentations. However, according to docs, I can't do that now: https://quarto.org/docs/authoring/conditional.html.

Typical usecase: I have a presentation in revealjs. For students, I output html document so they can later check out what was in the presentation. This output document needs to be e.g. without lecturer notes, and possibly without other presentation-specific things. However since format matching "html" (in when="html") matches both html and revealjs, I can't do that now.

To circle around this problem, I use my custom-defined hiding classes that I only apply for the output html document. However, since Quarto already has a conditional content, it would be nice to have it integrated inside. For example there could be new revealjs format, and I could specify when="html" unless="revealjs".

[mcanouil]

However, according to docs, I can't do that now

Where is this stated exactly as it is not true?

See:

• Conditional content: Website vs. Presentation #3215 (reply in thread)

[mcanouil]

Well pdf is a format and an alias.

[JanPalasek]

One example with something that isn't an alias.

[mcanouil]

I'll make a PR with the revealjs/html case from my previous answer.
This will also show a when/unless example.

[mcanouil]

FYI:

• docs: add example combining when/unless for revealjs/html quarto-web#910

[JanPalasek]

Looks great. Thx.

[harrelfe]

A far simpler approach is dual-use notes using standard Quarto. Multiple instructors have found this to be well received by students. Put side notes a .aside notes and use the long-form notes without somewhat distracting slide pagination. Merely by hitting curl + a few times the long form notes are converted into quite presentable slides. And long-term maintenance of the material is easy.

Besides the use of marginal notes, standard Quarto collapsed blocks are very effective for housing comments and further details.

[mcanouil]

Note that this is for a particular use case where there is a need to get content from html/revealjs to the other formats.
This won't work if the use case is to have format specific content.