I am running Ubuntu 18.04, Lilypond 2.21.4, emacs 25.2.2 Ever since I started my current Lilypond project, I have been getting occasional segmentation faults when compiling. Until today I thought it was something to do with errors or inconsistencies in my Lilypond code, and I have been able to make changes which appeared to solve the problem.
However, today I discovered something very odd. I edit my files in emacs, and I compile the main file by using Ctrl_C Ctrl_L in emacs, which issues the command 'lilypond <filename>'. Since earlier today, whenever I do this, the compile fails with a segmentation fault. Sometimes commenting out one or more instruments in the score allows the incomplete score to compile, but there seems to be no rhyme or reason as to which combinations of instruments allow compilation to take place successfully. As a result, I have spent several hours today trying to work out why this crash has started occurring again. But now I find that if I issue the command 'lilypond <filename>' directly from a GNOME terminal, the file compiles faultlessly. Yet even if I issue 'lilypond <filename>' as a shell command within emacs (rather than using Ctrl_C Ctrl_L) I again get a segmentation fault reported. I have tried rebooting the computer and then running emacs without starting any other programs at the same time, but I still get the same result. As I don't really understand what "segmentation fault" actually implies, can anybody suggest why this apparently inconsistent behaviour might be occurring? David
