Re: parser.yy: rearrange to allow more lenient use of music arguments for music functions. (issue4815052)

[Reinhold Kainhofer]

Am Freitag, 29. Juli 2011, 12:24:43 schrieb address@hidden:
> On 2011/07/29 08:55:24, Reinhold wrote:
> > Can you give some explicit examples that your patch now allows that
> > didn't work before (preferrably as a regtest, so we notice when a future
> > parser change breaks it)?
> 
> Well, one could now move a few things like \relative and \transpose into
> music functions (and Scheme-callable functions for the hard work, for
> efficiency's sake).
> 
> That would be a quite reliable regtest...

Actually, I think we should add a really simple test case to the regtests, 
like your example of \staffposition-at d' below.

> \tweak still works just the same.  But you could, for example, write
> something like
> \staffposition-at d'
> that resulted in a tweak of the next element to have it land in the
> position of a d'.

Can you turn that "could" into real lilypond code in a regtest, so that (1) we 
have a simple test case to check whether future parser changes affect this and 
(2) people like me, who easier understand things by examples, see what this 
patch achieves?

Quite often, I have found that trying to create a very simple regtest, I found 
several problems in my patches, because when thinking theoretically I might 
have missed how people would actually use the features.

Cheers,
Reinhold
-- 
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Reinhold Kainhofer, address@hidden, http://reinhold.kainhofer.com/
 * Financial & Actuarial Math., Vienna Univ. of Technology, Austria
 * http://www.fam.tuwien.ac.at/, DVR: 0005886
 * LilyPond, Music typesetting, http://www.lilypond.org