From: Stefan Monnier via "Bug reports for GNU Emacs, the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org>
To: "Mattias Engdegård" <mattias.engdegard@gmail.com>
Cc: Alan Mackenzie <acm@muc.de>,
65017@debbugs.gnu.org,
Eric Marsden <eric.marsden@risk-engineering.org>
Subject: bug#65017: 29.1; Byte compiler interaction with cl-lib function objects, removes symbol-function
Date: Mon, 07 Aug 2023 22:33:31 -0400 [thread overview]
Message-ID: <jwvsf8uxob0.fsf-monnier+emacs@gnu.org> (raw)
In-Reply-To: <DBB81517-794F-403B-8F2A-9AD40B073E11@gmail.com> ("Mattias Engdegård"'s message of "Sun, 6 Aug 2023 12:47:15 +0200")
>>> Separate data structures for locations might be an option worth exploring,
>>> keeping the actual s-expressions unadorned. Consider a reader mode that also
>>> produces a table mapping cons cells read to their locations, for example.
>> When Alan looked at it, the cost seemed prohibitive.
> I'm not aware of the details but think that it may be worth revisiting.
Feel free :-)
> The only serious difficulty a priori appears to be keeping locations in
> transformed code, but most of our diagnostics are issued on code before Lisp
> optimisations so this should mostly matter to macro-expansion.
We shouldn't emit errors/warnings from byte-opt, indeed, so that part
doesn't need to preserve the info, but we still need to preserve it
at least through macro-expansion and cconv.
> Yes, Scheme doesn't have much problems with user code manipulating Lisp as data.
> But what do actual Lisp compilers do? Do they perform a slow re-read when
> until they get to the location they want, when they need to issue
> a diagnostic? (Relint does something similar, in fact.)
Scheme's macro system has a notion of "syntactic object" (i.e. an sexp
combined with metainfo), and the macros make it clear when you're
looking inside a syntactic object or when you're building a new
syntactic object.
Don't know what Common Lisp systems do with `defmacro`, sorry.
I know Gambit Scheme has "defmacro" (under the name `define-macro`) but
it treats it as "second class citizen" in the sense that when using
a macro defined with `define-macro`, the metainfo is just lost.
Stefan
next prev parent reply other threads:[~2023-08-08 2:33 UTC|newest]
Thread overview: 51+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-08-02 10:28 bug#65017: 29.1; Byte compiler interaction with cl-lib function objects, removes symbol-function Eric Marsden
2023-08-03 9:39 ` Mattias Engdegård
2023-08-03 14:43 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-08-03 15:37 ` Mattias Engdegård
2023-08-03 16:36 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-08-03 16:53 ` Mattias Engdegård
2023-08-03 17:30 ` Mattias Engdegård
2023-08-03 16:43 ` Alan Mackenzie
2023-08-03 17:30 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-08-03 18:22 ` Alan Mackenzie
2023-08-03 21:00 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-08-03 21:10 ` Alan Mackenzie
2023-08-03 21:46 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-08-04 9:55 ` Alan Mackenzie
2023-08-05 22:45 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-08-04 10:14 ` Mattias Engdegård
2023-08-04 11:11 ` Alan Mackenzie
2023-08-04 13:41 ` Mattias Engdegård
2023-08-05 22:40 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-08-06 10:47 ` Mattias Engdegård
2023-08-08 2:33 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors [this message]
2023-08-04 5:35 ` Eli Zaretskii
2023-08-04 14:16 ` Alan Mackenzie
2023-08-05 20:22 ` Alan Mackenzie
2023-08-06 4:49 ` Eli Zaretskii
2023-08-04 13:22 ` Alan Mackenzie
2023-08-04 14:04 ` Eli Zaretskii
2023-08-04 14:49 ` Alan Mackenzie
2023-08-04 15:22 ` Eli Zaretskii
2023-08-04 16:43 ` Alan Mackenzie
2023-08-04 17:54 ` Eli Zaretskii
2023-08-05 22:58 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-08-05 22:53 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-08-06 11:59 ` Alan Mackenzie
2023-08-08 2:44 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-08-08 16:56 ` Alan Mackenzie
2023-08-10 3:41 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-08-10 14:50 ` Alan Mackenzie
2023-08-12 3:28 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-08-12 9:59 ` Mattias Engdegård
2023-08-12 18:21 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-08-12 10:40 ` Mattias Engdegård
2023-08-12 16:46 ` Alan Mackenzie
2023-08-12 18:28 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-08-13 10:10 ` Alan Mackenzie
2023-08-13 16:12 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-08-14 17:10 ` Alan Mackenzie
2023-08-03 16:11 ` Alan Mackenzie
2023-08-03 16:41 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-08-03 18:48 ` Alan Mackenzie
2023-08-09 12:27 ` Alan Mackenzie
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
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=jwvsf8uxob0.fsf-monnier+emacs@gnu.org \
--to=bug-gnu-emacs@gnu.org \
--cc=65017@debbugs.gnu.org \
--cc=acm@muc.de \
--cc=eric.marsden@risk-engineering.org \
--cc=mattias.engdegard@gmail.com \
--cc=monnier@iro.umontreal.ca \
/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.
Code repositories for project(s) associated with this external index
https://git.savannah.gnu.org/cgit/emacs.git
https://git.savannah.gnu.org/cgit/emacs/org-mode.git
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.