Add demo-it-presentation-jump-to-link

[nickbarnwell]

Sorry for bombarding you with PRs! If you rather I just maintain a fork, do let me know!

This function allows you to jump directly to a header or line as stored by org-store-link.

The motivation for this fn was being able to easily organise my demo-it presentations into a series of functions that could be moved around without relying on having state built up and keeping track of what the nextdemo-it-presentation-advance call will do.

[howardabrams]

Interesting idea. Let's merge this. Terribly sorry for the delay in getting back to you. Let me update the org base documentation (and generate the Info document from it). Any more examples you'd like me to include (or would you like to take a stab at it first)?

Thanks again for suggesting this.

[nickbarnwell]

I have a bunch of examples here, but they're functionally all the same. Is there anything you think needs to be added?

[howardabrams]

I guess I was looking for a simple use case, and an explanation of how this function is different from the demo-it--presentation-section with takes a string, and moves the currently displayed presentation to a particular section header, which if shown with org-tree-slide, jumps to that slide.

[nickbarnwell]

Oh, I hadn't found demo-it--presentation-section before. I guess the advantage of this is that it would also work with org-links to a specific file and line, but is probably unnecessary for the original use case given the function you just pointed me to. I haven't used it in the way I just mentioned, and text-size and other things would be incorrect compared to using the demo-it find-file equivalents.

If it were me, I'd reject the PR :)

[howardabrams]

:-D

Alright, I will, but I do appreciate you playing with it and coming up with a good idea. Seems like I need to make that function more noticeable in the documentation, so I'll work on that idea.

Thanks again.