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bug#15221: provide a mechanism to activate readline systemwide

From: Arne Babenhauserheide (IMK)
Subject: bug#15221: provide a mechanism to activate readline systemwide
Date: Tue, 3 Sep 2013 10:52:42 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130816 Thunderbird/17.0.8

I am not a lawyer either, but I know that the license of the executable
does not place restrictions on the license of the guile-specific code
(as long as that code is GPL-compatible).

Best wishes,

Am 30.08.2013 17:49, schrieb Noah Lavine:
> I am not a lawyer, but it seems to me that libguile could be under LGPL,
> but guile the executable could be under GPL, and therefore use readline
> by default.
> As you say, there would have to be an option to turn it off. Maybe
> --no-readline?
> Noah
> On Fri, Aug 30, 2013 at 10:01 AM, <address@hidden
> <mailto:address@hidden>> wrote:
>     ---- "Arne Babenhauserheide (IMK)" <address@hidden
>     <mailto:address@hidden>> wrote:
>     > Hi,
>     >
>     > Not having readline at the guile interpreter from the get-go in a GNU
>     > environment was a quite scarring experience for me, so it would be
>     great
>     > to have a way to enable readline by default.
>     >
>     > init.scm could provide that, but:
>     >
>     > <wingo> it seems to search the load path for init.scm
>     > <wingo> before loading anything else
>     > <wingo> tricky though, apparently that happens even before loading
>     boot-9
>     >
>     > Ideally there should be either a compileflag or a systemwide
>     config file
>     > to enable readline support in the whole system. If it is a
>     compile-flag
>     > it might be useful to not make it default, because developers why
>     > develop proprietary applications could then by accident compile a
>     > program with activated readline support.
>     >
>     > If such a flag existed, most GNU/Linux distributions could simply
>     > activate it for guile itself (as long as they do not ship unfree
>     scripts
>     > using guile which depend on readline support — those scripts would
>     > violate the GPL, but they would not work at all without readline
>     > support, so this dependency should be pretty clear).
>     Sometimes readline gets in the way, for example, when using guile
>     with emacs.
>     If it was enabled by default, then there also must be an option to
>     disable it when not needed.
>     The main reason readline is not enabled by default (IIRC), is the
>     license differences between readline and guile. (GPL and LGPL)
>     -Dale

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