Re: visualizing grob ancestry

[Mark Polesky]

Valentin Villenave wrote:
> What do you guys would like to do with it? LSR? Docs? Anywhere else?

In a weird way, I don't think either is appropriate. Sometimes I wish
there was something like an LSRD (for developers). You know, snippets
showing how to trace grob-parents, how to sort objects by specific
properties, how to know when to use #'(0 . 1) and when to use
#'(-0.5 . 0.5). These sorts of things.

What's sorely lacking in my opinion is a good reference documentation
for stuff like music-map, how to get a context from within a music-
function, the difference between ly:font-design-size and
ly:font-magnification, stuff like that. I'm learning all this stuff on
my own but it's like swimming through JELL-O. In the dark. And I think
there are a lot of useful functions that are totally undocumented (like
make-sequential-music and its kin). Sometimes I'll find stuff totally
accidentally, like lily-library.scm.

I could help with this documenting some of this stuff, but out of the
regular players, I probably understand these things the least.

But really, my fancy trick for tracing grob-parents is so snippetish,
it wouldn't really belong in the conventional documentation. I think
there should be a "Snippets List for Developers" node on the 
Developers resources page.

- Mark