Is there a standard way to make sure that a file full of LilyPond style definitions is included just once, no matter how many times it is mentioned?
I searched the Web site, mail archives, and /usr/shar/lilypond for "include once" and "include guard", to no avail. With the C preprocessor, there is a standard trick for setting and testing a variable to disable all but the first attempt to include a header file. Some languages have an "include-once" command. I am putting together a large choral score from bookparts for each number in the work. I like to be able to produce either a single number, or the whole score. The natural approach is to include style definitions in each of the files that I might set, including the file to format the whole score and the files to format individual numbers. Files to format individual numbers also include the style definitions. I find that repeated inclusion of the same definitions leads quickly to a segmentation fault. I can either add one more level of indirection, with one more file per number. Or, I can do some Scheme hacking, with a global variable to set showing inclusion (tricky, because the variable needs to be testable reliably even when it has never been set explicitly). But, I'd prefer to use a well-known standard method, if it exists. Thanks, Mike O'Donnell _______________________________________________ lilypond-user mailing list [email protected] http://lists.gnu.org/mailman/listinfo/lilypond-user
