[Feature Requests] Accept options in the placeholder

I would like to pass some options directly to the placeholder:

[toc level=2]

It would allow us to set different settings per note in the note taking app Joplin.

Would that be possible?

[nagaozen]

I made a try in this feature and I’d it working with some constraints:

• only works by default for the new $<toc...> syntax, where … is a special JSON. e.g. $<toc{"level":2}>
• it won’t accept spaces inside the JSON
• it won’t accept changing the slugify function, because the inline options are JSON compatible
• it won’t accept the characted ‘}’ inside the inline options
• changing level, as suggested in the initial request, will break markdown-it-anchorwhen the same content is used in many headers. e.g. # header\n\n## header\n\n###header

Anyone want to try? It’s available at inline_options branch. Are the constraints reasonable?

[tessus]

@nagaozen never mind the previous comment (which I have deleted). I screwed up. All good.