(debug-lexer #f "debug the flex lexer")
(debug-midi #f "generate human readable MIDI")
(debug-parser #f "debug the bison parser")
+ (debug-skylines #f "debug skylines")
(delete-intermediate-files #f
"delete unusable PostScript files")
(dump-signatures #f "dump output signatures of each system")
(ly:error (_ "failed files: ~S") (string-join failed))
(exit 1))
(begin
+ (ly:do-atexit)
;; HACK: be sure to exit with single newline
(ly:message "")
(exit 0)))))