Allow multicols env in LaTeX reader

[ip1981]

The multicols environment has a mandatory argument - number of columns.
It is incorrectly parsed as plain string. Wrap multicols content into nested divs.

Signed-off-by: Igor Pashev pashev.igor@gmail.com

[jgm]

Maybe even better, we could parse it into a structure with Divs.
This would give people a chance to do something with the structured data.

Div [("",["columns"],[])
  [ Div [("",["column"],[])
    [...]

We actually support this in beamer output.

[ip1981]

Maybe even better, we could parse it into a structure with Divs.
This would give people a chance to do something with the structured data.

Div [("",["columns"],[])
  [ Div [("",["column"],[])
    [...]

Agree! I just discovered that HTML/CSS support multi-columns docs nowadays (not very useful to me, though).
I think we then should keep the number of columns somehow, probably as a key-value pair?
And maybe use just one Div - I fail to see how the external Div might be helpful.

[jgm]

There is one external div with class "columns", and N internal divs (where N = the number of columns) each with class "column".

[jgm]

I think you may have misunderstood what I meant about two column Divs: the structure should be:

Div columns
[ Div column
, Div column ]

and not

Div columns
[ Div column
  [ Div column ...

Does that make more sense?

[ip1981]

Oh, what would be the content of the first div for example? Empty?

Div columns
[ Div column ""
, Div column "text foo hello"]

?

[jgm]

Maybe I need to understand better what you're trying to do.

The latex multicols environment creates columned text, but it computes where the column breaks go.
In order to duplicate this in pandoc we'd need pandoc to compute where a new column starts.
Is this something you're trying to do?

[ip1981]

No, I am basically trying to ignore the number of columns in latex :)

\begin{multicols}{2} % <- here
% ...
\end{multicols}

There is nothing more we can do, I think.

[jgm]

OK, then maybe I led you astray in my advice to include the nested column divs.
Maybe it makes most sense simply to include an outer "columns" div, and then the content inside.