[R-SIG-Mac] ANSI escape weirdness on M1 (libedit issue?)

[Simon Urbanek]

Gabor,

as you can see the x86_64 readline is a very old build 5.2-14 - it is the last version released under GPL-2. Later versions are to my best knowledge license-incompatible since they are released under GPL-3 only and thus do not allow the use in GPL-2 software. The arm64 version currently relies on the system library which is libedit. If it is of interest I can check if readline 5.2 can be built for arm64, but it predates the architecture by quite a few years ;).

Cheers,
Simon


> On Nov 4, 2021, at 7:12 AM, Gábor Csárdi <csardi.gabor using gmail.com> wrote:
> 
> On Wed, Nov 3, 2021 at 7:00 PM Prof Brian Ripley <ripley using stats.ox.ac.uk> wrote:
> [...]
>> AFAIK the reason for not distributing readline with binary distributions
>> of R is perceived licence restrictions.
> 
> So is the license different for x86_64? Because those builds come with readline:
> ❯ R-4.1 -q -e 'extSoftVersion()[["readline"]]'
>> extSoftVersion()[["readline"]]
> [1] "5.2"
> 
> Whereas the arm64 build has:
> ❯ R-4.1-arm64 -q -e 'extSoftVersion()[["readline"]]'
>> extSoftVersion()[["readline"]]
> [1] "4.2 (EditLine wrapper)"
> 
> Gabor
> 
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