Re: Get context in Scheme function (determining current moment)

[Urs Liska]

Am 04.12.2013 16:39, schrieb David Kastrup:
> Again: what are you trying to do?
Probably my reply to your previous answer will have told you in the 
meantime.

My \annotate function should also store the position in the score (to 
print that out and to sort by it).
So when I use the function in the input file it should store location 
elements and current measure and measure position in several variables.

The main goal of that is to make it possible to annotate a score with 
different types of comments (general annotation, todo, technical 
question, musical question, critical note etc.).
When compiling the score it will (among other things) output one or 
several files (don't know yet) with sorted list(s) of (clickable) 
annotations. That way I'll have a list of things that still have to be 
done. Reading the list I can simply click on an item and go to the input 
file.

Once that's reasonably stable I intend to write a LaTeX package that can 
use the output of \annotate (at least the critical notes) and insert 
them as a critical report in a LaTeX file. (Of course it won't be 
trivial to make that generally useful, but I think it's possible).

This way one will be able to edit a critical report directly in the 
musical score.
I found proof-reading of our Fried songs edition _very_ tedious. I had 
repeatedly (and with repeatedly I mean 7 pages of three-column 
scriptsize revision entries) to
- compare original edition with new engraving
- if there was a difference: check if there is an entry for that
- if not: decide if it's an error in our score or if I have to add an entry.
always switching between paper print, LilyPond edition and files and the 
LaTeX file with the report.

With that \annotate framework I could immediately see if there's an 
entry - in the .ly file - and add or edit it.

Also, while preparing the edition I could add an annotation at any time 
when I notice a questionable item. And when I'm decided about the issue 
I can change the annotation type from "question" to "critical-note" to 
make it available for the official report.

Surely a long way to go (particulary if I'm still having to poke around 
so much with Scheme basics), but hopefully very rewarding.
If it works out it will be a big selling point towards professional 
academics.

Best
Urs