Hello,
in these situations I use a little scheme-function like this:
parserDefine =
#(define-scheme-function (key val)(symbol? scheme?)
(ly:parser-define! key val))
!!!(I will correct this later, when I am on real computer ....)
This scheme-function works on every level defining a variable into the current
parser.
HTH
Jan-Peter
Am 7. November 2016 23:55:00 MEZ, schrieb Simon Albrecht
<simon.albre...@mail.de>:
>On 07.11.2016 17:56, David Kastrup wrote:
>> David Sumbler <da...@aeolia.co.uk> writes:
>>
>>> I had the following lines in the main file of my current Lilypond
>>> project:
>>>
>>> \book {
>>> \bookOutputName "../firstCello"
>>> partName = "Cello 1"
>>> \include "frontcover.ily"
>>> \bookpart { %music...
>>>
>>> The file "frontcover.ily" contains a \bookpart block which prints a
>>> front cover with title, composer etc. - these are defined elsewhere.
>>> But it needs one more variable, viz. 'partName'.
>>>
>>> I discovered that Lilypond will not accept a variable definition in
>>> Lilypond format in the position I have put it: at the top level of a
>>> \book block. Nor will it accept it in a \bookpart block. But at a
>>> higher or a lower level, it will.
>>>
>>> This seems a bit weird (to say the least), in view of the fact that
>by
>>> replacing the line
>>> partName = "Cello 1"
>>> with the Scheme form
>>> #(define partName "Cello 1")
>>> everything works as intended.
>>>
>>> Is there any useful reason why a variable cannot be defined in
>Lilypond
>>> format in these contexts?
>> Because they would not be local to these contexts?
>
>In other words, to make this work, books and bookparts would need their
>
>own namespaces, am I right? What would be the drawbacks of that? I
>daresay it would be pretty intuitive to use, and I’ve also found myself
>
>wanting that feature in the past, mainly to simplify \include
>structures.
>
>Best, Simon
>
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