The last paragraph of 1.2.2 LilyPond variables<http://lilypond.org/doc/v2.18/Documentation/extending/lilypond-variables> in Extending LilyPond<http://lilypond.org/doc/v2.18/Documentation/extending/index> is very hard to understand. The whole thing might need to be rewritten but I don't understand enough to do that. All I can do is offer suggestions for rephrasing, although I might be misinterpreting as I'm not fully understanding what I'm reading!
Original text ------- The usual way to refer to Lilypond variables, LilyPond Scheme syntax<http://lilypond.org/doc/v2.18/Documentation/extending/lilypond-scheme-syntax>, is to call them using a backslash, i.e., \twentyFour. Since this creates a copy of the value for most of LilyPond’s internal types, in particular music expressions, music functions don’t usually create copies of material they change. For this reason, music expressions given with # should usually not contain material that is not either created from scratch or explicitly copied rather than directly referenced. ------- Rephrased ------- Lilypond variables are usually called using a backslash, e.g. \twentyFour (see LilyPond Scheme syntax<http://lilypond.org/doc/v2.18/Documentation/extending/lilypond-scheme-syntax>), which creates a copy of the value. For that reason music functions in LilyPond don't usually create copies of material they change. Because of this, scheme music expressions written with the # syntax should not directly reference material. They should only be used for material created from scratch or explicitly copied. ------- Greetings, Martin _______________________________________________ bug-lilypond mailing list [email protected] https://lists.gnu.org/mailman/listinfo/bug-lilypond
