Hello Federico, Lilypond with Guile 1.8 used a less capable version of the format command that did not feature a destination argument (the default simple-format of Guile). With Guile 2 Lilypond uses the full, powerful ice9 format (as can be seen using #(display format)).
ice9 format takes a destination argument as first argument. This one can be any output port, #t for the current output port (i.e. you print the result) or #f to return the result. If we omit this destination argument format will handle it as #f but pass this warning. Now these messages you get should either come from A) The score itself using format B) The score using a function that uses format I’ve grepped through the current git master sources and all occurances of format do specify a port. This means that most likely you are using some custom scheme functions or libraries that use format. To fix these warnings replace all occurrances of (format string ...) by (format #f string ...) in such files. Cheers, Valentin Am Samstag, 29. Oktober 2022, 00:06:03 CEST schrieb Federico Bruni: > Sorry for the long subject. > > I see some of my scores return this message: > > Omitting the destination on a call to format is deprecated. > Pass #f as the destination, before the format string. > > I have no idea of what could trigger it and I was not able to make a > minimal example. > I can share privately a score to anybody interested in debugging this > message. > > I found a discussion about this message between Harm and David K six > years ago: > https://lists.gnu.org/archive/html/lilypond-user/2016-11/msg00966.html > > I'm running LilyPond 2.23.80 (Guile 2), official binaries.
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