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Re: Odd interaction between ly:grob-property and hairpin

From: Simon Albrecht
Subject: Re: Odd interaction between ly:grob-property and hairpin
Date: Thu, 10 Feb 2022 15:42:31 +0100

Hi Aaron,

thanks a lot for the help! I knew that these pure vs. impure issues exist, but I’ve never been able to wrap my head around them and this is the first time I ever needed to account for them in practice.

Looking at Extending Manual section 2.8, it seems that Y-offset is likely to be affected, so that makes sense.

What I don’t quite get is the meaning of the ‘begin’ and ‘end’ parameters in ly:grob-pure-property, but as long as 0 0 works, I’m good ;) (and it’s not a topic for the bug list)

Best, Simon

On 10/02/2022 03:29, Aaron Hill wrote:

A pure vs. unpure issue perhaps?  If you use ly:grob-pure-property to access it, it seems to work.

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