Merged multiline cells in latex output

[JonasIsensee]

Hi,
thank you for this neat package! :)

The docs already state that Multiline is not nestable.
Still, at least from an API perspective merge=true does not feel like nesting and it works in HTML output.
Would you consider this a bug or just not supported?

Table([
    Cell("column1") Cell("multlinecoll")
    Cell("row1") Cell(Multiline("line1","line2", "line3", "line4"); merge=true)
    Cell("row2") Cell(Multiline("line1","line2", "line3", "line4"); merge=true)
]; header = 1)

Latex

html

[jkrumbiegel]

Multiline needs to be top level because it's basically just adding linebreaks however the backend does that, and you cannot break lines in other things like superscripts or so.

But merging cells does not affect that, the two cells are just one for the backend, that's not nesting. This looks to me like a latex table rendering issue. Maybe the syntax that's being generated could be improved though, I'm not the most knowledgeable person about latex and tables are a complex topic 😄

[jkrumbiegel]

So I've looked some more into this and it seems like this is something LaTeX has a bit of trouble with and there are many kinds of workarounds floating around, for example here https://stackoverflow.com/questions/3991259/latex-how-to-break-the-line-in-multirow-inside-the-tabular

I couldn't get those to work reliably in some quick testing, so I'm not going to try further and fix it. If anybody has a good solution, I'd be happy about a PR to improve the situation. Until then, all other backends seem to handle this case ok, even though the row heights of row1 and row2 are not necessarily even, but there's also no constraint that would force them to be.