From: Henning Hraban Ramm <hraban@fiee.net>
Subject: Re: programming: doifdefined & friends
Date: Thu, 5 Oct 2006 02:56:43 +0200 [thread overview]
Message-ID: <2BF20575-AAB1-4E75-8F03-31DB6E89F663@fiee.net> (raw)
In-Reply-To: <A6B13FFF-B2C2-4BD5-9996-025BA13344A8@fiee.net>
Am 2006-10-05 um 02:42 schrieb Henning Hraban Ramm:
> -----
> \starttext
>
> \def\myvar{JAJAJA}
>
> \input tufte
> \doifdefined{\myvar}{\par bla \myvar blub\par}
> \input tufte
>
> \stoptext
> -----
Sorry for bothering you, I found it myself: I must leave out the
backslash in the condition.
But so I'm still stuck with this snippet from the LilyPond module,
where Christopher used a lot of catcode trickery:
-----
/doifdefined{lily!fontname}/bgroup
\layout {/string^^J
\override Staff.TimeSignature #'font-name = #/lily!fontname/string^^J
\override Staff.MultiMeasureRestText #'font-name = #/lily!fontname/
string^^J
\override Score.LyricText #'font-name = #/lily!fontname/string^^J
\override ChordNames.ChordName #'font-name = #/lily!fontname/string^^J
}/string^^J
/egroup
-----
gives:
! Undefined control sequence.
\lily!prefix ...ure #'font-name = #\lily!fontname
\string
\override Staff....
<argument> ...nd-\the \lily!figures ]\lily!prefix
\lily!hash (set-
global-sta...
\expanded ...\long \xdef \@@expanded {\noexpand #1
}\@@expanded
\dodostartlilypond ...e \lily!fragmentsuffix \fi }
\endbuffer \par
\def \LP {...
l.43 \stoplilypond
-----
I'm trying to introduce a "fontname" setting in \setuplilypond that
should generate the \layout{...} block in the LilyPond file if used
and nothing if not.
I know how to do that with numbers and yes/no settings, because there
are some samples in the module, but unfortunately no string settings
- and I don't understand the samples that I found in the ConTeXt
sources either.
Greetlings from Lake Constance!
Hraban
---
http://www.fiee.net/texnique/
http://contextgarden.net
http://www.cacert.org (I'm an assurer)
next prev parent reply other threads:[~2006-10-05 0:56 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-10-05 0:42 Henning Hraban Ramm
2006-10-05 0:56 ` Henning Hraban Ramm [this message]
2006-10-05 1:15 ` Henning Hraban Ramm
2006-10-05 4:04 ` Aditya Mahajan
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