On 1/2/10 6:44 PM, "Graham Percival" <gra...@percival-music.ca> wrote:
> On Sat, Jan 02, 2010 at 07:18:51PM +0100, Wilbert Berendsen wrote:
>> I could imagine one other addition to the list of topics in Scope and
>> Limitation:
>>
>> - the values that are used as arguments to common used overrides. Sometimes
>> they are a symbol (e.g. #'around), sometimes a predefined variable referring
>> to a Scheme value or object (e.g. #LEFT, #all-visible ). The main trouble is
>> that for novice users it is not clear when there should be an apostrophe and
>> when not.
>
> I added this to the specifics list. IIRC we have a doc policy to
> add #' to everything to try to resolve this exact problem, but I'm
> not certain if I'm remembering correctly.
No, the doc policy is to add # to everything so it will be a Scheme value
(strings can generally be LilyPond strings (no #) or Scheme strings (with #)
without any difference to the parser; numbers often can too). But having a
' or not depends on whether you want to get the symbol itself (with ', used
for names of properties) or the value of a variable (no ', generally used
for values of properties).
We can't always use the ' or always avoid using it, as far as I can see.
Thanks,
Carl
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