Le lundi 08 mai 2023 à 11:27 -0400, dfro a écrit : > > Jean, > > Thank you, for catching my omission of the CC to lilypond-user@gnu.org. I > intended to reply to the group. > > > > > The use of variables for the \paper block makes more sense to me. However, I > see that sometimes the numbers have no "#" before them, and sometimes they do > as with: > > inst-name-indent = #4.8 > > ...and sometimes they do not, as with: > > left-margin-title-page = 45 > > Also, setting true and false values use "##", as with: > > ragged-last-setting = ##f > > > > > I am still not comprehending why the "#" is used sometimes and sometimes not. > I am trying to grasp the nuances of how the lilypond language and the scheme > language translate to each other. > > > > > Somewhere, in the documentation it talks about lilypond using the "#" to > translate values into scheme language. Leaving off the "#" with numbers seems > to break this rule.
inst-name-indent = 4.8 and inst-name-indent = #4.8 are equivalent. LilyPond offers the first as syntactic sugar for the second. When it sees a number, it interprets it as number, like the Scheme interpreter behind # would have done. The exception is markup mode. There is no such syntactic sugar for booleans, so you have to use an initial # to switch to Scheme mode. The second # is part of the syntax of booleans in Scheme (#t and #f, or #true and #false). > > I also have a question about modes. Is normal mode where you input data > outside a music block or without stating a mode explicitly, as with "\include > "..."? I do not see it mentioned in "Notation > Reference Manual, 3.1 Input modes". What I called “normal mode” is what the manual calls “note mode”. > > Thank you, for the clear explanation of why \paper must be used for a > "set-..." variable outside the main \paper block. That makes sense to me now. > > > > > I hope this is not too far off topic, but your "42 is the answer" reference > led me to find this interesting article that is way over my > head:https://news.mit.edu/2019/answer-life-universe-and-everything-sum-three-cubes-mathematics-0910. Interesting, thanks for the link! Best, Jean >
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