[texhax] Question about LPPL version 1.3

[Vafa Khalighi]

Thanks a lot for the explanations Karl.

On Fri, Oct 21, 2011 at 9:05 AM, Karl Berry <karl at freefriends.org> wrote:

>    Is it true that with version 1.3, if you modify a package, you no
>    longer need to change its name (it is not compulsory to change the
>    name of the file or package)?
>
> That is correct, though it is strongly recommended to do so.  What you
> have to do, technically, is ensure the modified version "unambiguously
> identifies itself as a modified version" .  See Section 6 of the LPPL
> (especially).
>
> As you may know, Frank M wrote an article for TUGboat on LPPL history
> and decisions.  He just asked me about posting it, and I've made it
> available from the TUGboat site:
> http://tug.org/TUGboat/tb32-1/tb100mitt.pdf
>
>    Also by this version of the license, if you change a package, but
>    you only do it for your own personal usage, will you still need to
>    change the name of the file?
>
> 1) It is not likely that any copyright-based license can legally restrict
> what you name a file on your own computer.
>
> 2) In any case, since LPPL 1.3 does not require renaming files in the
> case of distribution, it certainly does not require renaming in the case
> of personal use.  There is a recommendation in the LPPL that such
> renaming be done (and I agree with that recommendation), but it is not a
> legal requirement.
>
> karl
>
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