Re: Articulate and tied tremolo - unexpected result
David Kastrup writes:
> Thomas Morley writes:
>
>> 2018-06-02 13:04 GMT+02:00 David Baptista :
>>> Good morning to all, I have recently picked up an unexpected behaviour when
>>> using the articulate script in conjuction with tremolo and ties. Here is a
>>> minimal example:
>>>
>>> \include "articulate.ly"
>>>
>>> \score{
>>> c'1:16~ c'1:16
>>> \layout{}
>>> }
>>>
>>> \score{
>>> \articulate { c'1:16~ c'1:16 }
>>> \layout{}
>>> }
>>>
>>> When this type of notation appears in scores, the meaning is that the
>>> tremolo is to last (in this example) for 2 measures. But the resulting
>>> output of articulate has one long sustained note with tremolo only in the
>>> second measure. I suspect the underlying bug is that the tied C is being
>>> replicated resulting in a sequence of tied Cs, but musically this is an
>>> incorrect behaviour.
>>>
>>> I reproduced this bug both in the latest stable (2.18.2) and unstable
>>> (2.19.48) release.
>>
>>
>> Hi,
>>
>> to me it looks more like a problem of \unfoldRepeats:
>>
>> mus = {
>> \repeat tremolo 16 c'16
>> ~
>> \repeat tremolo 16 c'16
>> }
>
> This is misleadingly formatted since it is interpreted as
>
> mus = {
> \repeat tremolo 16
> c'16~
> \repeat tremolo 16
> c'16
> }
>
> My own gut feeling is that c'1:16~ is supposed to mean something
> different, applying ~ to the whole rather than its parts. But what with
> things like ( \( ) \) -. -- and such?
>
>> So a fix may be tricky.
>
> We'd need to figure out what stuff means before fixing it.
Probably worth pointing out that x:y produces a TremoloEvent (not fazed
in any manner by \expandRepeats) while \repeat tremolo produces a
TremoloRepeatedMusic event.
--
David Kastrup
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Re: Articulate and tied tremolo - unexpected result
Thomas Morley writes:
> 2018-06-02 13:04 GMT+02:00 David Baptista :
>> Good morning to all, I have recently picked up an unexpected behaviour when
>> using the articulate script in conjuction with tremolo and ties. Here is a
>> minimal example:
>>
>> \include "articulate.ly"
>>
>> \score{
>> c'1:16~ c'1:16
>> \layout{}
>> }
>>
>> \score{
>> \articulate { c'1:16~ c'1:16 }
>> \layout{}
>> }
>>
>> When this type of notation appears in scores, the meaning is that the
>> tremolo is to last (in this example) for 2 measures. But the resulting
>> output of articulate has one long sustained note with tremolo only in the
>> second measure. I suspect the underlying bug is that the tied C is being
>> replicated resulting in a sequence of tied Cs, but musically this is an
>> incorrect behaviour.
>>
>> I reproduced this bug both in the latest stable (2.18.2) and unstable
>> (2.19.48) release.
>
>
> Hi,
>
> to me it looks more like a problem of \unfoldRepeats:
>
> mus = {
> \repeat tremolo 16 c'16
> ~
> \repeat tremolo 16 c'16
> }
This is misleadingly formatted since it is interpreted as
mus = {
\repeat tremolo 16
c'16~
\repeat tremolo 16
c'16
}
My own gut feeling is that c'1:16~ is supposed to mean something
different, applying ~ to the whole rather than its parts. But what with
things like ( \( ) \) -. -- and such?
> So a fix may be tricky.
We'd need to figure out what stuff means before fixing it.
--
David Kastrup
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Re: Articulate and tied tremolo - unexpected result
2018-06-02 13:04 GMT+02:00 David Baptista :
> Good morning to all, I have recently picked up an unexpected behaviour when
> using the articulate script in conjuction with tremolo and ties. Here is a
> minimal example:
>
> \include "articulate.ly"
>
> \score{
> c'1:16~ c'1:16
> \layout{}
> }
>
> \score{
> \articulate { c'1:16~ c'1:16 }
> \layout{}
> }
>
> When this type of notation appears in scores, the meaning is that the
> tremolo is to last (in this example) for 2 measures. But the resulting
> output of articulate has one long sustained note with tremolo only in the
> second measure. I suspect the underlying bug is that the tied C is being
> replicated resulting in a sequence of tied Cs, but musically this is an
> incorrect behaviour.
>
> I reproduced this bug both in the latest stable (2.18.2) and unstable
> (2.19.48) release.
Hi,
to me it looks more like a problem of \unfoldRepeats:
mus = {
\repeat tremolo 16 c'16
~
\repeat tremolo 16 c'16
}
{ \mus \unfoldRepeats tremolo \mus }
Simply dropping the Tie while unfolding will not cover the case of:
{ \repeat tremolo 16 c'16 ~ c'1 }
which is not unknown.
So a fix may be tricky.
Cheers,
Harm
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