Trailers are part of the commit message, but are separated from the body by a blank linke: Subject ... Body body body body body ... Signed-off-by: ..

Trailers are part of the commit message, but are separated from the body by a blank linke: Subject ... Body body body body body ... Signed-off-by: ... This is all one commit message, but it is understood by convention has having several parts: subject line, body and trailers.