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Re: license question

From: Urs Liska
Subject: Re: license question
Date: Tue, 21 Jan 2020 20:30:35 +0100
User-agent: K-9 Mail for Android

Am 21. Januar 2020 20:25:43 MEZ schrieb David Kastrup <address@hidden>:
>David Nalesnik <address@hidden> writes:
>> Hi all,
>> I have a question concerning the GPL.  Is it permissible for an app
>> under a GPL-incompatible license to provide output in LilyPond code?
>> For example, could Finale provide a Finale->LilyPond converter even
>> though the mechanics are shrouded in mystery?
>Most certainly so.  Making a combined application running in the same
>process space would be a problem, but calling LilyPond as an executable
>is pretty uncontroversial.  If you distribute it as an aggregate
>solution, you need to provide the source of the LilyPond component (as
>it is being used) on request or by default.  But running it as a server
>is unproblematic.
>But if you don't even include LilyPond but produce LilyPond output, no
>license comes into play.  I mean, unless your output contains
>copyrightable code taken from somewhere else.

I would put it like this: you can produce LilyPond input files/code with 
whatever you want, even your copyrighted brain.

Also  you can produce with GPLed software any content, the copyright in 
question is only thd content author's, not that of LilyPond.

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