David Nalesnik <[email protected]> writes: > An optional argument can be skipped only if there is some place in > the argument list where it can go. So in final position, optional > arguments are indistinguishable from mandatory arguments (actually > not quite, since they make preceding optional arguments also > mandatory). You can, however, still explicitly skip them by > writing \default in the actual argument list, like commands like > \key and \mark let you do. > > > Ah, OK! So (for the record) writing > > \test #'color #blue \default > > works perfectly with the test function. And > > \test #'color #@(list green red) > > does too.
This use of \default for skipping optional arguments even in end position may appear a bit contrived. However, \key \default and \mark \default existed (hardwired in the parser) even before music functions ever heard of optional arguments, so I consider it an accomplishment to have made this preexisting syntax fit into a coherent whole. -- David Kastrup _______________________________________________ lilypond-devel mailing list [email protected] https://lists.gnu.org/mailman/listinfo/lilypond-devel
