From: "Dr. Arne Babenhauserheide" <arne_bab@web.de>
To: Maxime Devos <maximedevos@telenet.be>
Cc: guile-devel@gnu.org
Subject: Re: [PATCH] add language/wisp to Guile?
Date: Sat, 04 Feb 2023 16:46:48 +0100 [thread overview]
Message-ID: <877cwxe4ar.fsf@web.de> (raw)
In-Reply-To: <f31a073e-6b8c-ce48-2917-53a13d76b108@telenet.be>
[-- Attachment #1: Type: text/plain, Size: 7161 bytes --]
Thank you for your review!
Maxime Devos <maximedevos@telenet.be> writes:
>> Why add Wisp?
>> For Wisp: it is then available directly wherever Guile is available.
>> This will make it much easier for people to follow tutorials.
>
> I'm not convinced of this argument, because package managers exist, but ...
>
>> For Guile:
>> - Wisp has proven to be good at enabling people to get an
>> entrance to Scheme² without pulling them out of the community.
>> - [...]
>
> ... all good points, and the implementation of Wisp is tiny anyway.
> For an additional reason: Wisp is a SRFI (Scheme Requests for
> Implementation) and Guile is a Scheme implementation.
That’s a good point — I should really have written it :-)
>> So I’d like to ask: can we merge Wisp as supported language into Guile?
>
> From some conversations elsewhere, I got the impression that
>
> (use-modules (foo))
>
> will search for foo.scm and not in foo.w. I think you'll need to
> tweak the loading mechanism to also look for foo.w instead of only
> foo.scm, if not done already.
This needs an addition to the extensions via guile -x .w — I wrote that
in the documentation. I didn’t want to do that unconditionally, because
detecting a wisp file as scheme import would cause errors.
Is there a way to only extend the loading mechanism to detect .w when
language is changed to wisp?
readable uses
(set! %load-extensions (cons ".sscm" %load-extensions))
Would that be the correct way of doing this?
> Also, I think that when foo.go exists, but foo.scm doesn't, then Guile
> refuses to load foo.scm, though I'm less sure of that. If this is the
> case, I propose removing the requirement that the source code is
> available, or alternatively keep the 'source code available'
> requirement and also accept 'foo.w', if not done already.
I think accepting any extension supported by any language in Guile would
be better.
>> +; Set locale to something which supports unicode. Required to avoid
>> using fluids.
>> +(catch #t
>
> * Why avoid fluids?
I’m not sure anymore. It has been years since I wrote that code …
I think it was because I did not understand what that would mean for the
program. And I actually still don’t know …
Hoow would I do that instead with fluids?
> * Assuming for sake of argument that fluids are to be avoided,
> what is the point of setting the locale to something supporting
> Unicode?
I had problems with reading unicode symbols. Things like
define (Σ . args) : apply + args
> As-is, it now becomes impossible to use 'gettext' to translate
> software to non-English locales when the software imports (language
> wisp), which seems unfortunate to me.
That is very much not what I want.
> If you elaborate on what your
> goal here is, maybe I have an alternative solution.
This is to ensure that Wisp are always read as Unicode. Since it uses
regular (read) as part of parsing, it must affect (read), too.
>> + ;; allow using "# foo" as #(foo).
>> + (read-hash-extend #\# (λ (chr port) #\#))
>
> That's a rather Wisp-specific extension, but it appears you are
> extending things globally. Instead, I propose extending it
> temporarily, with the undocumented '%read-hash-procedures' fluid.
>
>> + (let
>> + (
>> + (l
>
> Lonely parenthesis.
Thank you! Will be fixed :-)
> + (not (= 0 (line-real-indent (car lines ))))); -1 is a
> line with a comment
>
> Superfluous space after 'lines'.
>
>> + ; simple recursiive step to the next line
>
> I think the convention is ';;', OTOH there exist multiple conventions.
>
> +(define (wisp-scheme-replace-inline-colons lines)
> + "Replace inline colons by opening parens which close at the
> end of the line"
>
> Too much space; convention is two spaces.
> (Similar styles issues in other places.)
> "guix style" might be useful.
I’ll do that …
>> +(define (wisp-replace-paren-quotation-repr code)
>> + "Replace lists starting with a quotation symbol by
>> + quoted lists."
>> + (match code
>> + (('REPR-QUOTE-e749c73d-c826-47e2-a798-c16c13cb89dd a ...)
>> + (list 'quote (map wisp-replace-paren-quotation-repr a)))
>> [...]
>> +(define wisp-uuid "e749c73d-c826-47e2-a798-c16c13cb89dd")
>> +; define an intermediate dot replacement with UUID to avoid clashes.
>> +(define repr-dot ; .
>> + (string->symbol (string-append "REPR-DOT-" wisp-uuid)))
>
> There is a risk of collision -- e.g., suppose that someone translates
> your implementation of Wisp into Wisp. I imagine there might be a
> risk of misinterpreting the 'REPR-QUOTE-...' in
> wisp-replace-parent-quotation-repr, though I haven't tried it out.
This is actually auto-translated from wisp via wisp2lisp :-)
> As such, assuming this actually works, I propose using uninterned
> symbols instead, e.g.:
>
> (define repr-dot (make-symbol "REPR-DOT")).
That looks better — does uninterned symbol mean it can’t be
mis-interpreted?
Can I (match l ...) on uninterned symbols? They are used to match on
precisely these symbols later.
Can I write it into a string and then read it back?
When I see them, I have to turn them into a different representation
that I can then write back into the string and allow it to be read by
the normal reader.
> If this change is done, you might need to replace
>
> + ;; literal array as start of a line: # (a b) c -> (#(a b) c)
> + ((#\# a ...)
> + (with-input-from-string ;; hack to defer to read
> + (string-append "#"
> + (with-output-to-string
> + (λ ()
> + (write (map
> wisp-replace-paren-quotation-repr a)
> + (current-output-port)))))
> + read))
>
>
> (unverified -- I think removing this is unneeded but I don't
> understand this REPR-... stuff well enough).
The REPR supports the syntactic sugar like '(...) for (quote ...) by turning
(' ...) into '(...).
Also it is needed to turn ((. a b c)) into (a b c).
However the literal array is used to make it possible to define
procedure properties which need a literal array.
> Also, I wonder if you could just do something like
>
> (apply vector (map wisp-replace-paren-quotation-repr a))
>
> instead of this 'hack to defer to read' thing. This seems simpler to
> me and equivalent.
That looks much cleaner. Thank you!
> (AFAIK, these REPR-... symbols are never written to a port or turned
> into syntax, so I think that uninterned symbols would work here.)
They are unread into a string.
> (Aside from the REPR-... thing, I'm assuming (language wisp) is
> alright -- the SRFI is in 'final' status and it has been stable for
> years now, after all.)
Thank you!
Best wishes,
Arne
--
Unpolitisch sein
heißt politisch sein,
ohne es zu merken.
draketo.de
[-- Attachment #2: signature.asc --]
[-- Type: application/pgp-signature, Size: 1125 bytes --]
next prev parent reply other threads:[~2023-02-04 15:46 UTC|newest]
Thread overview: 83+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-02-03 21:26 [PATCH] add language/wisp to Guile? Dr. Arne Babenhauserheide
2023-02-04 15:08 ` Maxime Devos
2023-02-04 15:46 ` Dr. Arne Babenhauserheide [this message]
2023-02-04 19:09 ` Maxime Devos
2023-02-04 21:35 ` Dr. Arne Babenhauserheide
2023-02-05 15:08 ` Maxime Devos
2023-02-14 8:32 ` Dr. Arne Babenhauserheide
2023-02-14 21:24 ` Dr. Arne Babenhauserheide
2023-02-14 23:01 ` Maxime Devos
2023-02-15 1:46 ` Matt Wette
2023-02-16 21:38 ` Dr. Arne Babenhauserheide
2023-02-17 1:26 ` Matt Wette
2023-02-23 11:36 ` Ludovic Courtès
2023-02-23 17:48 ` Dr. Arne Babenhauserheide
2023-02-23 18:42 ` Maxime Devos
2023-02-24 15:45 ` Ludovic Courtès
2023-02-24 16:34 ` Dr. Arne Babenhauserheide
2023-03-08 10:34 ` Dr. Arne Babenhauserheide
2023-05-01 9:54 ` [PATCH] add SRFI-119 / language/wisp to Guile? (new patch, squashed) Dr. Arne Babenhauserheide
2023-06-10 16:40 ` Ludovic Courtès
2023-06-12 10:22 ` Maxime Devos
2023-08-10 6:28 ` Dr. Arne Babenhauserheide
2023-08-14 20:11 ` Dr. Arne Babenhauserheide
2023-08-14 20:30 ` Dr. Arne Babenhauserheide
2023-08-14 22:43 ` Dr. Arne Babenhauserheide
2023-08-18 10:29 ` Ludovic Courtès
2023-08-18 12:16 ` Dr. Arne Babenhauserheide
2023-08-18 17:50 ` Dr. Arne Babenhauserheide
2023-09-08 17:46 ` Dr. Arne Babenhauserheide
2023-10-05 14:10 ` Dr. Arne Babenhauserheide
2023-10-10 23:04 ` Dr. Arne Babenhauserheide
2023-10-27 22:05 ` Dr. Arne Babenhauserheide
2024-01-09 7:05 ` Dr. Arne Babenhauserheide
2024-01-19 8:21 ` Dr. Arne Babenhauserheide
2024-03-11 1:16 ` [PATCH] add SRFI-119 / language/wisp to Guile? (new patch with more tests, squashed) Dr. Arne Babenhauserheide
2024-01-19 12:10 ` [PATCH] add SRFI-119 / language/wisp to Guile? (new patch, squashed) Christina O'Donnell
2024-01-19 21:37 ` Ricardo Wurmus
2024-01-19 21:47 ` Christina O'Donnell
2024-01-20 11:01 ` Damien Mattei
2024-01-20 19:18 ` Dr. Arne Babenhauserheide
2024-01-20 22:59 ` Damien Mattei
2024-01-20 23:22 ` Dr. Arne Babenhauserheide
2024-01-21 23:21 ` Damien Mattei
2024-01-19 23:56 ` Dr. Arne Babenhauserheide
2023-02-24 23:48 ` [PATCH] add language/wisp to Guile? Maxime Devos
2023-02-24 23:51 ` Maxime Devos
2023-02-25 0:15 ` Matt Wette
2023-02-25 10:42 ` Maxime Devos
2023-02-17 23:06 ` Maxime Devos
2023-02-18 3:50 ` Philip McGrath
2023-02-18 15:58 ` Maxime Devos
2023-02-18 19:56 ` Matt Wette
2023-02-21 12:09 ` Dr. Arne Babenhauserheide
2023-02-26 7:45 ` Philip McGrath
2023-02-26 15:42 ` Maxime Devos
2023-02-26 16:14 ` Dr. Arne Babenhauserheide
2023-02-26 17:58 ` Matt Wette
2023-02-26 18:03 ` Dr. Arne Babenhauserheide
2023-02-26 18:20 ` Matt Wette
2023-02-26 21:39 ` Dr. Arne Babenhauserheide
2023-10-02 14:59 ` Christine Lemmer-Webber
2023-10-02 21:46 ` guile support for multiple languages [was: [PATCH] add language/wisp to Guile?] Matt Wette
2023-02-23 7:59 ` [PATCH] add language/wisp to Guile? Maxime Devos
2023-02-23 8:51 ` Dr. Arne Babenhauserheide
2023-02-23 18:04 ` Maxime Devos
2023-02-23 18:22 ` Maxime Devos
2023-02-23 18:36 ` Maxime Devos
2023-02-23 18:37 ` Maxime Devos
2023-02-15 8:36 ` Dr. Arne Babenhauserheide
2023-02-15 20:13 ` Maxime Devos
2023-02-16 7:01 ` Dr. Arne Babenhauserheide
2023-02-16 8:03 ` Dr. Arne Babenhauserheide
2023-02-16 11:30 ` Maxime Devos
2023-02-16 21:35 ` Dr. Arne Babenhauserheide
2023-09-30 13:17 ` Christine Lemmer-Webber
2023-09-30 20:09 ` Maxime Devos
2023-10-02 14:48 ` Christine Lemmer-Webber
[not found] <mailman.886.1677397547.13386.guile-devel@gnu.org>
2023-02-26 11:02 ` Marc Nieper-Wißkirchen
2023-02-26 23:22 ` Philip McGrath
2023-02-27 5:00 ` Dr. Arne Babenhauserheide
2023-02-27 7:26 ` Marc Nieper-Wißkirchen
2023-02-28 4:27 ` Philip McGrath
2023-02-28 6:57 ` Marc Nieper-Wißkirchen
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
List information: https://www.gnu.org/software/guile/
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=877cwxe4ar.fsf@web.de \
--to=arne_bab@web.de \
--cc=guile-devel@gnu.org \
--cc=maximedevos@telenet.be \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).