Thanks Aaron. I didn't give an MWE as it was a preliminary probe to see if this is a known issue.
Here's the code in question: #(define fonts (set-global-fonts #:roman "Linux Libertine O" #:sans "Linux Biolinum O" #:typewriter "Linux Libertine Mono O" #:factor (/ staff-height pt 20) )) However, I have only recently moved to Arch, so I am setting up all anew. After a) going nuts and b) exploring everything there is to be known about fontconfig, I tried deleting all files in ~/.cache, which includes a lot of fontconfig cache data. Now the issue has gone away. I suspect, but I can't be sure that this is a subtle issue - the Linux Libertine and Biolinum original font site seems to have been defunct for a long time, and while setting up my new system I had to source the fonts from a whole lot of dubious free font download sites, and the all seem to be different all in different ways. I think I just had a bad set of font data cached. Possibly. but clearing the cache solved this. I do not know what happened to the original source of these fonts. They are veyr fine,. and Biolinum is a very good stand in for Optima. Andrew _______________________________________________ bug-lilypond mailing list bug-lilypond@gnu.org https://lists.gnu.org/mailman/listinfo/bug-lilypond