Errors using fences within tabs

[fherreazcue]

When using a tab or group-tab (as implemented here), if a fence is used within, the content gets triplicated.
This is a minimal example to reproduce the error:

:::::::::::: tab

### tab 1

some text

### tab 2

some other text

:::::: spoiler

some text that should be hidden

::::::::::::::

::::::::::::::::::

And this is the output:

[froggleston]

Hey @astroDimitrios - as the author of #571 - do you have any thoughts about this?

[astroDimitrios]

Hi both! @froggleston @fherreazcue This is a limitation of the lua, see the caveats section on 571 in the first comment. I tried several ways to get fenced blocks to work inside the tabs but because of the way some of the admonitons are rendered as multiple inline elements there was no way to capture those properly inside a tab (although I'm still a Lua novice so maybe there is a better way).

Can the content you are writing be re-written to not include the hidden text? I can try and have another look at the Lua code but can't make any promises! Also I see now the docs say you can use fenced content in tabs which probably needs changing!