Re: Including tweaks in a variable

[David Kastrup]

Simon Albrecht  writes:

> On 01.03.2018 17:51, Michael Stickles wrote:
>> It was driving me crazy at first because it still wouldn't work,
>> until I dug through the documentation a bit more and found that 2.18
>> and 2.19 have a slightly different syntax for the
>> function arguments:
>
> Truly the fact that it’s difficult for power users to provide the
> proper syntax for 2.18 shows how old that stable release is.

It isn't that old but like with most stable releases so far, there are
few "catchy" syntactic changes (usually backwards-compatible) that one
gets used to very fast.  This is one.  The \etc is another one.

-- 
David Kastrup

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Re: Including tweaks in a variable

[Simon Albrecht]

On 01.03.2018 17:51, Michael Stickles wrote:
It was driving me crazy at first because it still wouldn't work, until 
I dug through the documentation a bit more and found that 2.18 and 
2.19 have a slightly different syntax for the function arguments:


Truly the fact that it’s difficult for power users to provide the proper 
syntax for 2.18 shows how old that stable release is. We’re working on a 
2.20 release, but until then you’re also pretty safe using 2.19.81 and 
enjoying its multiple improvements.


Best, Simon

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Re: Including tweaks in a variable

[Michael Stickles]

Jan-Peter,


Thanks. That was the correct idea. It was driving me crazy at first because 
it still wouldn't work, until I dug through the documentation a bit more 
and found that 2.18 and 2.19 have a slightly different syntax for the 
function arguments:


2.19

===

smNote = #(define-music-function

  (m)(ly:music?)

  #{

\tweak font-size #-2 #m

  #}

)


2.18
===
smNote = #(define-music-function

  (parser location m)(ly:music?)

  #{

\tweak font-size #-2 #m

  #}

)

After adding "parser location" to the start of the arguments section, it 
works perfectly. Thanks again!



From: "Jan-Peter Voigt" <jp.vo...@gmx.de>

Sent: Thursday, March 01, 2018 10:43 AM

To: lilypond-user@gnu.org

Subject: Re: Including tweaks in a variable


Hello Michael,


it works if you add \etc to the variable (in lily-dev 2.19.x IIRC):

smNote = \tweak font-size #-2 \etc

That way smNote becomes a music-function that takes the note as argument 

and the tweak is applied.

If you are using 2.18 you have to create the function like this:

smNote = #(define-music-function (m)(ly:music?) #{ \tweak font-size #-2 

#m #})


HTH

Jan-Peter


Am 01.03.2018 um 15:33 schrieb Michael Stickles:

> This should be simple, but I just can't seem to get it to work.  I'm 

> working on re-doing a lot of our church music, and use variables 

> extensively to help make the .ly files more readable. There are a lot 

> of places where one vocal part splits and we want the "secondary" 

> notes to be smaller, resulting in code like this:

>

> 1

>

> What I want to do is replace the "tweak" section with a variable, like 

> this:

>

> smNote = \tweak font-size #-2

>

> 1

>

> But this results in errors:

>

> error: unknown escaped string: `\smNote'

> error: wrong type for argument 3.  Expecting symbol list or music, 

> found #

>

> (the "smNote" definition is at the end of the variables section, and 

> the first line after the variables section is "\book {" )

>

> Some online searching came up with a few suggestions, but none of them 

> worked for me. Given that they worked for the original posters, I'd 

> guess I implemented them incorrectly, but I can't figure out what I'm 

> doing wrong. Ideas?

>

>

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Re: Including tweaks in a variable

[Jan-Peter Voigt]

Hello Michael,

it works if you add \etc to the variable (in lily-dev 2.19.x IIRC):
smNote = \tweak font-size #-2 \etc
That way smNote becomes a music-function that takes the note as argument 
and the tweak is applied.

If you are using 2.18 you have to create the function like this:
smNote = #(define-music-function (m)(ly:music?) #{ \tweak font-size #-2 
#m #})


HTH
Jan-Peter

Am 01.03.2018 um 15:33 schrieb Michael Stickles:
This should be simple, but I just can't seem to get it to work.  I'm 
working on re-doing a lot of our church music, and use variables 
extensively to help make the .ly files more readable. There are a lot 
of places where one vocal part splits and we want the "secondary" 
notes to be smaller, resulting in code like this:


1

What I want to do is replace the "tweak" section with a variable, like 
this:


smNote = \tweak font-size #-2

1

But this results in errors:

error: unknown escaped string: `\smNote'
error: wrong type for argument 3.  Expecting symbol list or music, 
found #


(the "smNote" definition is at the end of the variables section, and 
the first line after the variables section is "\book {" )


Some online searching came up with a few suggestions, but none of them 
worked for me. Given that they worked for the original posters, I'd 
guess I implemented them incorrectly, but I can't figure out what I'm 
doing wrong. Ideas?



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Including tweaks in a variable

[Michael Stickles]

This should be simple, but I just can't seem to get it to work.  I'm 
working on re-doing a lot of our church music, and use variables 
extensively to help make the .ly files more readable. There are a lot of 
places where one vocal part splits and we want the "secondary" notes to be 
smaller, resulting in code like this:


1


What I want to do is replace the "tweak" section with a variable, like 
this:


smNote = \tweak font-size #-2


1


But this results in errors:


error: unknown escaped string: `\smNote'

error: wrong type for argument 3.  Expecting symbol list or music, 
found 
#


(the "smNote" definition is at the end of the variables section, and the 
first line after the variables section is "\book {" )


Some online searching came up with a few suggestions, but none of them 
worked for me. Given that they worked for the original posters, I'd guess I 
implemented them incorrectly, but I can't figure out what I'm doing wrong. 
Ideas?



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