Custom Lua pipes

[l1mey112]

I am trying to recreate a lot of functionality inside Hugo's templating language, for example:

• the ability to concatenate arrays,
• convert date representations,
• urlize (https://gohugo.io/functions/urls/urlize/),
• zipping two arrays (we have /pairs so why not this?),
• and probably some others.

Other things like wordcount have been emulated using a filter that assigns metadata after running, however to implement the above it would be nice to have a way to write a custom Lua pipe.

{{ . | urlize }} - converted to -> $tag/urlize$

Is there a way to do this?

[jgm]

See jgm/doctemplates#28
though this is for pipes written in Haskell.

A big obstacle is that the doctemplates library is independent of pandoc and doesn't know about pandoc's Lua subsystem (with its ability to marshall between pandoc and Lua types).

[l1mey112]

Fair enough. I appreciate it!