Re: How to get a useful repl with Chicken 5?

Updates:

1. breadline installed out of the box, no extra effort required, on SLES11 at work.

2. breadline did exactly what I expected when I added (repl) to the code in the given csirc example and put it in my program.

3. ^R, history saving and all the other powerful features of readline all seem to work.

4. Code completion works!! Maybe it is a bit much to ask but it'd be useful if completion rolled over from internal symbols to files. (*)

Thanks Vasilij, this egg is very much appreciated. If no one else is reporting problems on Ubuntu 18.04 then likely I've got something messed up on my home machine. I'll debug further and report back on what I find.

This is what I included in my code to get a repl with line editing, history etc:

(case command
((repl)
(import (chicken load))
(load-verbose #f)
(let ()
(import (chicken format))
(import (chicken process-context))
(unless (get-environment-variable "INSIDE_EMACS")
(import breadline)
(import breadline-scheme-completion)
(history-file (format "~a/.csi_history" (get-environment-variable "HOME")))
(stifle-history! 10000)
(completer-word-break-characters-set! "\"\'`;|(")
(completer-set! scheme-completer)
(basic-quote-characters-set! "\"|")
(variable-bind! "blink-matching-paren" "on")
(paren-blink-timeout-set! 200000)
(current-input-port (make-readline-port))))
(repl) ;; added this

)

. . .

(*) What I mean by rollover is this:

#;> (publis<tab>

;; fills out from internal symbols and the publish is filled out. Then I'd like to enter a filename:

#;> (publish "examples/a<tab>

;; if breadline doesn't find an internal symbol "examples/a" then it could look at the filesystem and list the files that match.

On Fri, Jan 31, 2020 at 4:30 AM Matt Welland <address@hidden> wrote:

For linenoise I was not able to get saving history to work.

I'm having trouble getting breadline to install on Ubuntu on this old laptop. I have libreadline-dev installed but when I do chicken-install breadline I get:

matt@matt-HP-EliteBook-6930p:~$ chicken-install breadline
building breadline
/home/matt/.cache/chicken-install/breadline/build-breadline -host -D compiling-extension -J -s -regenerate-import-libraries -setup-mode -I /home/matt/.cache/chicken-install/breadline -C -I/home/matt/.cache/chicken-install/breadline -O2 -d1 breadline.scm -o /home/matt/.cache/chicken-install/breadline/breadline.so
Package readline was not found in the pkg-config search path.
Perhaps you should add the directory containing `readline.pc'
to the PKG_CONFIG_PATH environment variable
No package 'readline' found
Package readline was not found in the pkg-config search path.
Perhaps you should add the directory containing `readline.pc'
to the PKG_CONFIG_PATH environment variable
No package 'readline' found
Package readline was not found in the pkg-config search path.
Perhaps you should add the directory containing `readline.pc'
to the PKG_CONFIG_PATH environment variable
No package 'readline' found
Package readline was not found in the pkg-config search path.
Perhaps you should add the directory containing `readline.pc'
to the PKG_CONFIG_PATH environment variable
No package 'readline' found
/usr/bin/ld: cannot find -lncurses
collect2: error: ld returned 1 exit status

Error: shell command terminated with non-zero exit status 256: 'gcc' '/home/matt/.cache/chicken-install/breadline/breadline.o' -o '/home/matt/.cache/chicken-install/breadline/breadline.so' -shared -lreadline -lncurses -L/opt/chicken/5.1.0_WW45/lib -Wl,-R/opt/chicken/5.1.0_WW45/lib -lchicken -lm -ldl
/home/matt/.cache/chicken-install/breadline/build-breadline -regenerate-import-libraries -setup-mode -static -I /home/matt/.cache/chicken-install/breadline -emit-link-file /home/matt/.cache/chicken-install/breadline/breadline.link -host -D compiling-extension -c -unit breadline -D compiling-static-extension -C -I/home/matt/.cache/chicken-install/breadline -O2 -d1 breadline.scm -o /home/matt/.cache/chicken-install/breadline/breadline.static.o
Package readline was not found in the pkg-config search path.
Perhaps you should add the directory containing `readline.pc'
to the PKG_CONFIG_PATH environment variable
No package 'readline' found
Package readline was not found in the pkg-config search path.
Perhaps you should add the directory containing `readline.pc'
to the PKG_CONFIG_PATH environment variable
No package 'readline' found
Package readline was not found in the pkg-config search path.
Perhaps you should add the directory containing `readline.pc'
to the PKG_CONFIG_PATH environment variable
No package 'readline' found
Package readline was not found in the pkg-config search path.
Perhaps you should add the directory containing `readline.pc'
to the PKG_CONFIG_PATH environment variable
No package 'readline' found
/opt/chicken/5.1.0_WW45/bin/csc -setup-mode -s -host -I /home/matt/.cache/chicken-install/breadline -C -I/home/matt/.cache/chicken-install/breadline -O2 -d0 breadline.import.scm -o /home/matt/.cache/chicken-install/breadline/breadline.import.so
/opt/chicken/5.1.0_WW45/bin/csc -host -D compiling-extension -J -s -regenerate-import-libraries -setup-mode -I /home/matt/.cache/chicken-install/breadline -C -I/home/matt/.cache/chicken-install/breadline -O2 -d1 breadline-scheme-completion.scm -o /home/matt/.cache/chicken-install/breadline/breadline-scheme-completion.so
/opt/chicken/5.1.0_WW45/bin/csc -regenerate-import-libraries -setup-mode -static -I /home/matt/.cache/chicken-install/breadline -emit-link-file /home/matt/.cache/chicken-install/breadline/breadline-scheme-completion.link -host -D compiling-extension -c -unit breadline-scheme-completion -D compiling-static-extension -C -I/home/matt/.cache/chicken-install/breadline -O2 -d1 breadline-scheme-completion.scm -o /home/matt/.cache/chicken-install/breadline/breadline-scheme-completion.static.o
/opt/chicken/5.1.0_WW45/bin/csc -setup-mode -s -host -I /home/matt/.cache/chicken-install/breadline -C -I/home/matt/.cache/chicken-install/breadline -O2 -d0 breadline-scheme-completion.import.scm -o /home/matt/.cache/chicken-install/breadline/breadline-scheme-completion.import.so
installing breadline
install: cannot stat '/home/matt/.cache/chicken-install/breadline/breadline.so': No such file or directory

Error: shell command terminated with nonzero exit code
256
"sh /home/matt/.cache/chicken-install/breadline/breadline.install.sh"

On Fri, Jan 31, 2020 at 12:21 AM Vasilij Schneidermann <address@hidden> wrote:
Hello Matt,

> I've read the docs on linenoise and breadline but I'm not seeing how to get
> a useful editable repl.
>
> Any pointers or suggestions would be appreciated.

I've developed breadline. Its wiki page has an examples section which
shows how to create a custom REPL for programs and points to
<https://github.com/wasamasa/breadline/tree/master/examples> for two
more examples, a `.csirc` (for your other scenario of customizing `csi`)
and how a simple completer can be created.

The story is similar with linenoise, its wiki page has an example
section for general use and a "Using linenoise in csi" one. Did you
have issues with setting either up?

Vasilij

--
--
Complexity is your enemy. Any fool can make something complicated.
It is hard to keep things simple. - Richard Branson.

From:	Matt Welland
Subject:	Re: How to get a useful repl with Chicken 5?
Date:	Fri, 31 Jan 2020 08:38:41 -0700