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Re: Getting readline to work in scheme-sandbox

From: Michael Käppler
Subject: Re: Getting readline to work in scheme-sandbox
Date: Tue, 14 Jan 2020 07:59:00 +0100
User-agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:68.0) Gecko/20100101 Thunderbird/68.3.1

Hi Knute,
I'm currently working on this problem. A library called
libguilereadline, that comes with guile,
does provide the interface to the libreadline library. The version we
ship with our packages, however,
seems to be broken somehow.
There are some ways to get around this. Do you have
guile-2.2-libs installed, too?
If installing guile-2.2-libs does not help either, please send me the output

strace -o readlinedebug.log lilypond

where you type the mentioned commands for activating readline.


Am 14.01.2020 um 01:31 schrieb Knute Snortum:
I recently discovered the scheme-sandbox in LilyPond and I want to get
line editing to work.  In the comments say:

% One typical thing you might want to put there is
% (use-modules (ice-9 readline))
% (activate-readline)
% in order to activate command line editing for interactive sessions.

I'm assuming that these are commands to type into the sandbox.  But
when I do this I get an error:

guile> (use-modules (ice-9 readline))
ERROR: readline is not provided in this Guile installation
ABORT: (misc-error)

When I search for installed packages at the Linux command line, I see this:

libreadline8/eoan,now 8.0-3 amd64 [installed,automatic]

Any idea why readline is not available?

My system is Ubuntu 19.10, Guile is 2.2 and LilyPond is 2.19.83.

Knute Snortum
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