Am 27.06.2015 um 11:34 schrieb David Kastrup: > Urs Liska <u...@openlilylib.org> writes: > >> Am 27.06.2015 um 11:04 schrieb N. Andrew Walsh: >>> Well, I've now loaded this up on my laptop, and re-cloned the >>> openlilylib directory, and now the problem no longer appears. I have >>> other issues -- namely that my production box is running lilypond >>> 2.19.22, which I can't seem to install from ubuntu -- but those are minor. >> >> 2.19.22 isn't released yet AFAICS. Do you have a custom built LilyPond? >> >>> >>> Urs, did you update something on the git tree, or was this simply a >>> problem on my side that I'll run into again when I get back home? >> >> It's not clear what you say. Do you have a laptop with something < >> 2.19.22 and a home pc with a custom build from the 2.19.22 line? >> >> If that's the case then probably you'll experience the problem at home >> again because the changes in LilyPond have been introduced there. >> >> I assume I'll have to change the implementation (and look for other >> parts where this might matter) and introduce a version switch so the >> code executed from openLilyLib depends on the LilyPond version. > > Unfortunately, 2.19.22 has not yet been released so there is "2.19.22 > before change" and "2.19.22 after change" rather than "2.19.22 at the > point of its release". > > It might be more reliable to use something like > > (catch 'wrong-number-of-args > (lambda () (something bla)) > (lambda _ (something parser bla))) > > which just tries the new calling convention and, failing that, reverts > to the old call.
That's surely cleaner. But I'll stick to my simpler approach because if I add this switch which will execute the new code when version >= 2.19.22 this will only fail for someone who has a custom build from not the latest master. *If* someone should run in that corner case and really needs to use that functionality that person could afford pulling the latest master and building LilyPond IMO Urs _______________________________________________ lilypond-user mailing list lilypond-user@gnu.org https://lists.gnu.org/mailman/listinfo/lilypond-user
