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)