Generic directives/plugins syntax

Extensions
119

It would be better if there was some way to distinguish containers from leaves in the first line, or the line after.

That’s why I think my proposal is better for block directives (you can tell between a leaf and a block quickly from the first line):

leaf

!spoiler: harrys kills voltmort. But spares hermimi

container

!spoiler: toggle visibility on hover
:::
  harrys kills voltmort
  But spares hermimi
:::

More compact

!spoiler::::::::::::::::
  harrys kills voltmort
  But spares hermimi
::::::::::::::::::::::::

A compact version for single paragraph directive.

!spoiler: 
  harrys kills voltmort
  But spares hermimi

where

block = !spoiler:

inline = !spoiler