running the command
lilypond -dseparate-log-files a.ly ab.ly
results in:
GNU LilyPond 2.15.95
C:/Program Files
(x86)/LilyPond/usr/share/lilypond/current/scm/lily.scm:807:15: In
procedure
open-file in expression (open-file (if # # ...) "a"):
C:/Program Files
(x86)/LilyPond/usr/share/lilypond/current/scm/lily.scm:807:15: No such
file
or directory: "/dev/stderr"
workaround (for windows):
FOR %x IN (*.ly) DO lilypond %x [1>"%~nx.out"] 2>"%~nx.log"
did I use this command/option incorrectly? if not I will add this to the
issue list.