With tr7 scheme engine, the syntax set! has no return value. The specification 4.1.6 tells that the result is unspecified. Maybe some discussion is needed to decide if "the result is unspecified" includes the case that there is no result.
This patch solves the issue for tr7 without any discussion.
With tr7 scheme engine, the syntax set! has no return value. The specification 4.1.6 tells that the result is unspecified. Maybe some discussion is needed to decide if "the result is unspecified" includes the case that there is no result.
This patch solves the issue for tr7 without any discussion.