>>>>> Richard Kenner writes: Richard> Now, suppose I apply it to the GPLv2 version of the file. One could argue Richard> that such file is now GPLv3 and I think that'd be correct. But since the Richard> parts of the file being patched are identical, the patch is indistinguishable Richard> from one that's derived from GPLv2 text. This strikes me as a VERY murky Richard> legal areas.
I believe this scenario is exactly RMS's expectation if someone other than the original author copies / backports a patch from a GPLv3 file. David