License of code posted to this list

[David Bellows]

Hello all,

I have a big coding project that generates Lilypond files to be
processed by Lilypond in an external process. My software is GPL. I
make use of a couple of scripts that were produced on this list but
have not been uploaded to the LSR. They are significant enough that I
would consider them of concern when thinking about licensing issues.

I've contacted the authors in each of these cases asking them to add
license information to these scripts but so far I haven't heard back
from them.

OK, that's how these things go, but since things like this can come up
again I was wondering if anyone has a knowledgeable opinion on the
state of code posted to a mail list like this? Is it automatically
public domain and so I don't need any additional licensing from the
original authors?

Does it make a difference if the scripts were derived from code from the LSR?

Thanks!