From: Per Bothner <per@bothner.com>
To: Andrea Bernardini <andrebask@gmail.com>, kawa@sourceware.org
Subject: Re: tab-completion implemented for Kawa
Date: Thu, 25 Feb 2016 23:51:00 -0000 [thread overview]
Message-ID: <56CF9386.6040001@bothner.com> (raw)
In-Reply-To: <CAPFJfsuKUjZSkKCZLTFUMybXpp6N4SMXqGerduNEsrhfnJ=J2g@mail.gmail.com>
On 02/25/2016 03:33 PM, Andrea Bernardini wrote:
> Hi Per,
> This is a very nice feature!
Thanks!
>
> BTW, something I miss in the Kawa REPL is some kind of history. I'm
> used to the bash shell, where you can use the up arrow key to get the
> previous executed commands. Currently pressing the arrow key in Kawa
> inserts a weird sequence of characters.
That what the arrow keys are supposed to send. However, Java doesn't
have a portable pure-Java mechanism to interpret those key sequences.
> I know that other languages'
> REPLs have the same problem (like Racket), however there are some that
> support this feature (Python, Haskell). Do you think that could be
> doable for Kawa?
That's what the --enable-kawa-frontend configure option does. It compiles
a C program as a front-end to Kawa. This front-end program uses GNU readline.
There may be some portability issues with the frontend - I haven't made any
effort to port it, and it would certainly need major changes on Windows.
More portable is the JLine2 support I recently announced. That is a 99%-pure-Java
re-implementation of GNU readline. That gives you input editing, history,
and (now) tab-completion.
JLine2 may requires some native code on Windows; I haven't tried it under Windows yet.
It should work out-of-the-box on most Unix-like OSes, including GNU/Linux and MacOS.
(It should work on Windows too - I just don't have the instructions for doing that.)
--
--Per Bothner
per@bothner.com http://per.bothner.com/
next prev parent reply other threads:[~2016-02-25 23:51 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-02-25 2:13 Per Bothner
[not found] ` <CAPFJfsva4VPt_RQ5NrNzY8n7oyZB0EGL7VuFAzsEcGS8ruDqbA@mail.gmail.com>
[not found] ` <CAPFJfsvV+Lnrko6Bj008DLA7007of_1a-XOM0oAYH5JTXrFRpA@mail.gmail.com>
2016-02-25 23:33 ` Andrea Bernardini
2016-02-25 23:51 ` Per Bothner [this message]
2016-02-26 0:48 ` Andrea Bernardini
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