Re: usage example for pure-unpure container sought

[Jean Abou Samra]

Le 08/10/2021 à 09:24, Werner LEMBERG a écrit :
> I've found some minor documentation and formatting issues in NR
> section 5.5.6, "Unpure-pure containers", which I'm going to fix.  In
> general, however, there is a serious problem with the example in this
> subsubsection, as documented in issue #3512:
>
>    https://gitlab.com/lilypond/lilypond/-/issues/3512
>
> The given example no longer works, or rather, the proposed solution to
> the formatting problem is useless because LilyPond already does the
> right thing automatically.
>
> Looking at the current output of regtest `unpure-pure-container.ly` I
> have the feeling that the description text doesn't fit the code at
> all: It always talks about the second note of each group, while the
> code modifies the first note.  Of course, it is also possible that I'm
> too dumb to really understand what's going on ...
>
> I thus search a good example for using an unpure-pure container that I
> could add to the documentation.  And if someone explains to me how the
> regtest works I'm going to reformulate its documentation text, too, so
> that even I can understand it :-)


Don't waste your time with this. The whole point
of my pure project driven by tied accidentals is
to eliminate unpure-pure containers and replace
them with something more workable and user-friendly.
In particular, I expect the need for user-written
pure callbacks to become much more rare.

Best,
Jean