Support for includes/multiple markdown files

[Pablo Ovelleiro Corral]

Is your feature request related to a problem? Please describe.
With long presentations, it would be nice if there was some convenient mechanism to split them up into multiple markdown files. It makes editing and working in a team easier.

Describe the solution you'd like
Possible solutions I can think of would be:

• A include otherfile.md directive to import other files into a main.md
• The ability run the slides command with multiple files as parameter, e.g. slides chapter1.md chapter2.md chapter3.md or even slides *.md

Describe alternatives you've considered
This might be possible to workaround with #17 but I have not found a nice way of doing it that ensures the correct order and doesn't involve an external script or huge one-liner.

Additional context
If this is already possible, please let me know how or point me to the docs for this feature. If it's undocumented, it might be worth adding an example

[Ronaldo Martins]

The is most magnificent developer builders.
My curious 🧐 to attend. Now I believe this is more satisfactory working.

Thank you for your contribution!!

[Maas Lalani]

Hey @pinpox, have you tried using cat to concatenate slides then pass them through stdin?

cat *.md | slides

You could prefix the files with 00_, 01_, 02_, etc... to maintain order.

[erszk]

Along similar lines, this is one reason why m4 exists.

Inside your file presentation.md:

...

m4_include(otherslides.md)
m4_include(somemoreslides.md)

...

run slides <(m4 -P presentation.md)

[Maas Lalani]

We may add this feature later, but for now I believe using unix tools (cat) is the way to go!