"Bertalan Fodor (LilyPondTool)" <lilypondt...@organum.hu> writes:
> Now, the real problem I see with this approach is that no perfect
> formatting (which is not the same as indentation) can be done without
> actually parsing the input.
I don't see that.
> Complete parsing of LilyPond input is _impossible_ without LilyPond
> itself.
There are very few things actually affecting input syntax (redefining
note names is one of those). Chord and lyrics mode, too, but I don't
think that the subtleties are actually important for formatting and
indentation. It is perfectly acceptable to just break on spaces, and
indent according to >> } > nesting. After discounting quoted strings,
-> \> \< and similar articulation.
> For example you need to format LilyPond code _inside_ Scheme code
> (remember the #{ construct used in define-music-function)
Yes, but it is not like there are multiple arbitrary ways in which this
can happen. It is actually just #{ IIRC.
> So a standard formatting engine can only be written inside LilyPond,
> or at least using LilyPond to generate metadata describing the
> structure of the input.
I think that view is overly pessimistic.
--
David Kastrup
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