fret-diagrams in Lilypond + ConTeXt

fret-diagrams in Lilypond + ConTeXt

[Mikael Persson]

Hi all,

I have problems getting fret-diagrams working in Lilypond+ConTeXt. The
following works in lilypond

\markup \fret-diagram #"s:0.75;f:1;6-x;5-x;4-o;3-2-1;2-3-3;1-2-2;"

However, the following does not work in ConTeXt:

\usemodule[lilypond]
\starttext
\startlilypond
\markup \fret-diagram #"s:0.75;f:1;6-x;5-x;4-o;3-2-1;2-3-3;1-2-2;"
\stoplilypond
\stoptext

I have
ConTeXt  ver: 2007.08.08 14:35 MKII  fmt: 2007.8.26  int: english/english
Lilypond version 2.10.5 and the
Lilypond ConTeXt module t-lilypond-2007.09.02.zip

The examples on the wiki works well, and the problem seems to be that
\fret-diagram is written as \fret -diagram (note the space) in the
.tmp file, and thus producing the error(?)

Any ideas?

Best regards, Micke P
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Re: fret-diagrams in Lilypond + ConTeXt

[Arthur Reutenauer]

> Any ideas?

  This is a catcode problem.  Surround \start ... \stoplilypond with

	\catcode`\-=11

  and

	\catcode`\-=12

  Then you will probably experience a Lilypond problem because the line
of code you type (\markup \fret-diagram ...) apparently isn't a
legitimate Lilypond stand-alone score and you need to place it on the
page with \mark, for example.  But even then Lilypond is not so happy
and complains that there is no note on the page, and you'd better put
some there.

  To sum up, the following works for me:

---- cut after

\usemodule[lilypond]
\starttext

\catcode`\-=11
\startlilypond
d'' ^ \markup { \fret-diagram #"s:0.75;6-x;5-x;4-o;3-2;2-3;1-2;" }
\stoplilypond
\catcode`\-=12

\stoptext

---- cut before

  Have fun!

  Note for Hraban: this problem is apparently special to markups, that
somehow the minus signs loses his letterhood when used in a markup.
The fault lies obviously with Lilypond, since when I try to compile the
following exact line (with the added curly braces):

  { \markup \fret-diagram #"s:0.75;f:1;6-x;5-x;4-o;3-2-1;2-3-3;1-2-2;" }

Lilypond seems to suddenly forget that the minus is part of the command
and complains about an “unknown escaped string: `\fret'”.

  I have no idea what to do in t-lilypond to fix it.  Maybe you know?

	Arthur
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Re: fret-diagrams in Lilypond + ConTeXt

[Henning Hraban Ramm]

Am 2007-09-11 um 02:53 schrieb Arthur Reutenauer:

>   Note for Hraban: this problem is apparently special to markups, that
> somehow the minus signs loses his letterhood when used in a markup.
> The fault lies obviously with Lilypond, since when I try to compile  
> the
> following exact line (with the added curly braces):
>
>   { \markup \fret-diagram #"s:0.75;f:1;6-x;5-x;4-o; 
> 3-2-1;2-3-3;1-2-2;" }
>
> Lilypond seems to suddenly forget that the minus is part of the  
> command
> and complains about an “unknown escaped string: `\fret'”.
>
>   I have no idea what to do in t-lilypond to fix it.  Maybe you know?

Sorry, the catcode code is not by me, and I understand it only partly  
- I'm able to write PostScript and a lot of other languages, but TeX  
and Scheme are too obscure for me. Perhaps we can re-implement the  
module in Lua...

If you come up with a fix, I'll gladly put it in the module.

(There's still a lot more to be fixed/extended; since I'll have to  
finish my songbook soon, I'll have to cope with some of that...)

Greetlings from Lake Constance!
Hraban
---
http://www.fiee.net/texnique/
http://wiki.contextgarden.net
https://www.cacert.org (I'm an assurer)

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Re: fret-diagrams in Lilypond + ConTeXt

[Arthur Reutenauer]

> If you come up with a fix, I'll gladly put it in the module.

  I'll really don't know for the moment but I may have a look at it some
day ...

	Arthur
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Re: fret-diagrams in Lilypond + ConTeXt

[Mikael Persson]

On 9/11/07, Henning Hraban Ramm <hraban@fiee.net> wrote:
> Am 2007-09-11 um 02:53 schrieb Arthur Reutenauer:
>
> >   Note for Hraban: this problem is apparently special to markups, that
> > somehow the minus signs loses his letterhood when used in a markup.
> > The fault lies obviously with Lilypond, since when I try to compile
> > the
> > following exact line (with the added curly braces):
> >
> >   { \markup \fret-diagram #"s:0.75;f:1;6-x;5-x;4-o;
> > 3-2-1;2-3-3;1-2-2;" }
> >
> > Lilypond seems to suddenly forget that the minus is part of the
> > command
> > and complains about an "unknown escaped string: `\fret'".
> >
> >   I have no idea what to do in t-lilypond to fix it.  Maybe you know?
>
> Sorry, the catcode code is not by me, and I understand it only partly
> - I'm able to write PostScript and a lot of other languages, but TeX
> and Scheme are too obscure for me. Perhaps we can re-implement the
> module in Lua...
>
> If you come up with a fix, I'll gladly put it in the module.
>
> (There's still a lot more to be fixed/extended; since I'll have to
> finish my songbook soon, I'll have to cope with some of that...)
>
> Greetlings from Lake Constance!
> Hraban
> ---

Arthur, tanks for your kind reply! I'll try it when I get home. It was
a bit confusing with the - for me, but I should have tried the catcode
solution! Actually, I want to typeset only fret-diagrams, no notes.
Maybe I should look that up in the Lilypond manual (if it is
possible). The lacking of {}'s was because of the error I got without
them.

Hraban, thanks for bringing a nice module!

/Micke P
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___________________________________________________________________________________

Re: fret-diagrams in Lilypond + ConTeXt

[Arthur Reutenauer]

> Maybe I should look that up in the Lilypond manual (if it is
> possible).

  I guess you should. Look for the general documentation on markups
because that's what you need here. As for the braces, it seems
extremely weird to me and I have not been able to draw any general
conclusion about it, but you may try.

  I've wikified the entire discussion, in the hope that someone could
sort it out in the future.

	Arthur
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Re: fret-diagrams in Lilypond + ConTeXt

[Mojca Miklavec]

On 9/11/07, Arthur Reutenauer wrote:
> > Any ideas?
>
>   This is a catcode problem.  Surround \start ... \stoplilypond with
>
>         \catcode`\-=11
>
>   and
>
>         \catcode`\-=12
>
>   Then you will probably experience a Lilypond problem because the line
> of code you type (\markup \fret-diagram ...) apparently isn't a
> legitimate Lilypond stand-alone score and you need to place it on the
> page with \mark, for example.  But even then Lilypond is not so happy
> and complains that there is no note on the page, and you'd better put
> some there.
>
>   To sum up, the following works for me:
>
> ---- cut after
>
> \usemodule[lilypond]
> \starttext
>
> \catcode`\-=11
> \startlilypond
> d'' ^ \markup { \fret-diagram #"s:0.75;6-x;5-x;4-o;3-2;2-3;1-2;" }
> \stoplilypond
> \catcode`\-=12
>
> \stoptext
>
> ---- cut before
>
>   I have no idea what to do in t-lilypond to fix it.  Maybe you know?

For some strange reason it works here if I replace
    /catcode`/-=/@@letter
by
    /catcode`/-=11
in t-lilypond.tex.

Mojca
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___________________________________________________________________________________

Re: fret-diagrams in Lilypond + ConTeXt

[Arthur Reutenauer]

> For some strange reason it works here if I replace
>     /catcode`/-=/@@letter
> by
>     /catcode`/-=11
> in t-lilypond.tex.

  Strange indeed. This may hint that \@@letter is defined to something
else that what we want at that point ...
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___________________________________________________________________________________

Re: fret-diagrams in Lilypond + ConTeXt

[Henning Hraban Ramm]

Am 2007-09-13 um 10:14 schrieb Mojca Miklavec:

> For some strange reason it works here if I replace
>     /catcode`/-=/@@letter
> by
>     /catcode`/-=11
> in t-lilypond.tex.

Should I change it in the module or is it not save?

Greetlings from Lake Constance!
Hraban
---
http://www.fiee.net/texnique/
http://wiki.contextgarden.net
https://www.cacert.org (I'm an assurer)

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___________________________________________________________________________________

Re: fret-diagrams in Lilypond + ConTeXt

[Arthur Reutenauer]

On Fri, Sep 14, 2007 at 07:09:02PM +0200, Henning Hraban Ramm wrote:
> Am 2007-09-13 um 10:14 schrieb Mojca Miklavec:
> 
> > For some strange reason it works here if I replace
> >     /catcode`/-=/@@letter
> > by
> >     /catcode`/-=11
> > in t-lilypond.tex.
> 
> Should I change it in the module or is it not save?

  I'm convinced it is very safe, but as far as I'm concerned I've not
been able to reproduce this behaviour; could anyone please confirm what
Mojca says above?

	Arthur
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