A Big Thank You to Marnen Laibow-Koser — Mac OS 64 bit Lilypond 2.20 downloaded, installed and is running! This is a huge relief since my skill level is basically; download file and drag to application folder.
The only thing not running quite as expected is convert.ly
updating. It isn't flagging the syntax differences. It does execute without error messages and it changes the version number.
I thought that if it was run from the LilyPad app bundle, it would just silently update the whole file (I don't like that behavior, but it seemed to be design in LilyPad). I'll admit that I haven't tested it thoroughly, though; if you run it from within Frescobaldi, you at least see the diff. Is it missing syntax differences? If so, I'd appreciate a sample file that it's not behaving properly on.
Not a huge problem, since any instances of the old syntax (2.18.2) get highlighted during the compile anyway.
If convert-ly is working properly, there shouldn't *be* any of the old syntax left. If there are, that *is* a huge problem and means that the version I packaged is broken. Is that the case?