On Thu, 10 May 2012 11:26:21 +0200 Simon Josefsson wrote: > Hi, Hi Simon! > > Has this license been evaluated before? RFC 1950-1952 contains: > > Copyright (c) 1996 L. Peter Deutsch and Jean-Loup Gailly > > Permission is granted to copy and distribute this document for any > purpose and without charge, including translations into other > languages and incorporation into compilations, provided that the > copyright notice and this notice are preserved, and that any > substantive changes or deletions from the original are clearly > marked. > > A pointer to the latest version of this and related documentation in > HTML format can be found at the URL > <ftp://ftp.uu.net/graphics/png/documents/zlib/zdoc-index.html>. > > The license initially doesn't give permissions to make modifications, > although it later require that any changes are clearly marked, which I > guess can be seen as the intention is to allow modifications. > > Is the license DFSG-free? To me it's really unclear whether this license really wants to grant permission to make modifications and redistribute the result. Do I understand correctly that the RFC documents you are referring to are related to the zlib library? I think the copyright holders for these RFC documents should really be persuaded to re-license them under the terms of the zlib license [1]. It is always recommendable that the documentation for a program or library is released under the same licensing terms as the program or library itself. [1] http://www.zlib.net/zlib_license.html I hope this re-licensing may happen soon... -- http://www.inventati.org/frx/frx-gpg-key-transition-2010.txt New GnuPG key, see the transition document! ..................................................... Francesco Poli . GnuPG key fpr == CA01 1147 9CD2 EFDF FB82 3925 3E1C 27E1 1F69 BFFE
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