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Re: script stack order regression

From: David Kastrup
Subject: Re: script stack order regression
Date: Wed, 24 Mar 2021 14:34:01 +0100
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux)

Werner LEMBERG <wl@gnu.org> writes:

>>> I don't think LilyPond guarantees a particular order of events
>>> occuring at the same moment, but I agree that wrapping them should
>>> not change the order.  An issue has been created to track this
>> But the regression test script-stack-order.ly is quite explicit
>> about the order being guaranteed.
> This is the trivial case.  The problematic case are constructs like
>   << { ... } { ... } ... >>
> and similar things.

There is not really an order of _events_ guaranteed, but LilyPond tries
preserving straightforward relations of the input to the music
expression.  Mapping the music expression to some behavior during
iteration is then a different endeavor.

David Kastrup

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