GNU Guile Scheme REPL not showing output

[francium]

I'm trying to do some very simple Scheme REPL work.

I've got a very simple config and almost everything is working except for,

(display "Hello, World!")

Which is just giving me, when I do <leader>ee,

; --------------------------------------------------------------------------------
; eval (current-form): (display "Hello, World!")
; Empty result

Here's my relevant config,

Plug 'https://github.com/Olical/conjure'
let g:conjure#filetype#scheme = "conjure.client.guile.socket"
let g:conjure#client#guile#socket#pipename = ".guile-repl.socket"

And the script for creating the REPL and socket,

#!/usr/bin/env bash

SOCKET=$(git rev-parse --show-toplevel 2> /dev/null || pwd)/.guile-repl.socket

echo "$(tput bold)$SOCKET$(tput sgr0)"

if [ -f $SOCKET ]; then rm $SOCKET; fi
guile --listen=$SOCKET

rm $SOCKET

In the guile command line REPL, I get the expected result,

scheme@(guile-user)> (display "Hello, World!")
Hello, World!scheme@(guile-user)> 

Contrast this with ConjureSchool,

  (print "Hello, World!")

Here doing <leader>ee on this form results in,

; --------------------------------------------------------------------------------
; eval (current-form): (print "Hello, World!")
; (out) Hello, World!
nil

The (out) Hello, World! as expected.

So is this perhaps a GNU Guile limitation?

I'm very new to Lisp, Scheme, Guile and Conjure, so hopefully I'm not making some very obvious novice mistake. If I am please let me know.

[Olical]

I think you need a newline at the end of the display call? Which isn't ideal, but that should work?

This is something that would probably be fixed by the future stdio client support rewrite.

[francium]

So this right,

(display "Hello, World!\n")

Then <leader>ee gives,

; --------------------------------------------------------------------------------
; eval (current-form): (display "Hello, World!\n")
; Empty result

[francium]

I tried out vim-slime with this config,

Plug 'https://github.com/jpalardy/vim-slime'
let g:slime_target = "tmux"
let g:slime_paste_file = tempname()

That was working without any issues, so may just be an issue with with stdio client in conjure as you mentioned.

So it's not too urgent for me. I can work with vim-slime for my very basic needs and use conjure if I play around with another Lisp at some point.

conjure is really great compared to vim-slimebtw based on my very brief experience using both.

[Olical]

Sorry it's been so long, someone on Mastodon just brought this to my attention again. Had a quick go at fixing it and it seems to work for me now. If someone else can confirm that I'll merge and close this 😄

It's on the develop branch.

[aleksandersumowski]

Seems to be fixed in develop! Thanks a lot! Saved from Emacs once again 😆

[Olical]

🍻🥳🎉🎉🎉

…

On Fri, 1 Dec 2023, 22:56 Aleksander Sumowski, ***@***.***> wrote: Seems to be fixed in develop! Thanks a lot! Saved from Emacs once again 😆 — Reply to this email directly, view it on GitHub <#412 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AACM6XPYEF4VUCLCGNQUV5DYHJOABAVCNFSM6AAAAAAQJSRJ7CVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMYTQMZWHA4DMMRQGY> . You are receiving this because you commented.Message ID: ***@***.***>

[austinmlv]

With the current situation the following doesn't work as expected for me:

(define (print-hi-and-return x)
  (begin
    (display "Hi")
    (newline))
  x)

(print-hi-and-return 123)
;; The above returns:
123

If the Guile client were to behave similar to the client for built-in Fennel shouldn't it produce output in the log like the following:

; (out) Hi
123

At the Guile repl this happens:

scheme@(guile-user)> (print-hi-and-return 123)
Hi
$5 = 123
scheme@(guile-user)>

I have a possible fix with #552 but that may not be what people expect with the Guile client.
There's also the issue where:

(define (return-values)
  (values 123 "Hi"))

(return-values) 
;; Returns only:
123
;; Should be:
123
"Hi"

At the Guile repl:

scheme@(guile-user)> (return-values)
$9 = 123
$10 = "Hi"
scheme@(guile-user)>

I'm planning on working on a PR to address the second problem but that might be better dealt with in another issue.

[Olical]

Merged the PR so that should address the print example given, the final multi-value return example still doesn't work though. We might need to do some wider refactoring to get that to work as expected, clearly we're missing something fundamental and a change in approach might make the behaviour flawless while simplifying the code.