David Kastrup wrote:
We used to have the same command for setting both context and object
properties, see
http://lilypond.org/doc/v2.2/Documentation/topdocs/out-www/NEWS.html
I read
The syntax for setting properties has been simplified: the following
table lists the differences:
(old) (new)
\property A.B = #C \set A.B = #C
\property A.B \unset \unset A.B
\property A.B \set #C = #D \override A.B #C = #D
\property A.B \override #C = #D (removed)
\property A.B \revert #C \revert A.B #C
There is no differentiation between "context" and "object" properties
here.
Of course there is! The \property A.B = #C syntax was used for context
properties (called "translation properties" in the 2.0 documentation)
whereas the \property A.B {\set,\override} #C = #D was used for object
properties (called "layout properties" in the 2.0 documentation). See
for example
http://lilypond.org/doc/v2.0/Documentation/user/out-www/lilypond/Tuning-output.html#Tuning-output
which explicitly states that you should not confuse layout properties
with translation properties. In
http://lists.gnu.org/archive/html/lilypond-user/2003-10/msg00195.html
you can find an attempt I did at that time to introduce the different
kinds of properties and how to set them. I'm still missing this kind of
overview in the Learning manual, but haven't really had the time to
write it down.
I share your concerns that there's no clear-cut distinction between what
is handled by layout properties and and what's handled by context
properties, but it used to be much worse in old LilyPond versions, where
we had more context properties that de facto dealt with only one
particular layout object.
/Mats
--
=============================================
Mats Bengtsson
Signal Processing
School of Electrical Engineering
Royal Institute of Technology (KTH)
SE-100 44 STOCKHOLM
Sweden
Phone: (+46) 8 790 8463
Fax: (+46) 8 790 7260
Email: mats.bengts...@ee.kth.se
WWW: http://www.s3.kth.se/~mabe
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