From: Stefan Monnier via "Bug reports for GNU Emacs, the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org>
To: Michael Heerdegen <michael_heerdegen@web.de>
Cc: eliz@gnu.org, zack@owlfolio.org, 64232@debbugs.gnu.org
Subject: bug#64232: 28.2; Incorrect(?) byte compilation warning about ‘ansi-color-apply-on-region’
Date: Thu, 29 Jun 2023 00:51:08 -0400 [thread overview]
Message-ID: <jwvy1k2evd1.fsf-monnier+emacs@gnu.org> (raw)
In-Reply-To: <87wmznhr1q.fsf@web.de> (Michael Heerdegen's message of "Thu, 29 Jun 2023 05:43:13 +0200")
> The warning is the same as when one did just
>
> #+begin_src emacs-lisp
> (eval-when-compile
> (require 'ansi-color))
> #+end_src
>
> When removing that `eval-when-compile' the warning message goes away.
> So the compiler warns stricter when something is required inside
> `eval-when-compile', even if there would be no warning at all without
> it.
Indeed, it's a vaguely known problem which we haven't tried to
fix seriously.
The usual workaround is to shuffle things around (e.g. move the
(eval-when-compile
(check-declare-file byte-compile-current-file))
earlier or later in the file) ... until the warnings disappear :-(
Someone™ should sit down and figure out how to make `bytecomp.el` keep
track of those things more reliably/predictably.
In the mean time, maybe we can simply tweak `byte-compile-eval` so it
never adds to `byte-compile-noruntime-functions` functions which have
already been seen/declared during the current compilation?
Stefan
diff --git a/lisp/emacs-lisp/bytecomp.el b/lisp/emacs-lisp/bytecomp.el
index 99202185d8d..cfec4b3be06 100644
--- a/lisp/emacs-lisp/bytecomp.el
+++ b/lisp/emacs-lisp/bytecomp.el
@@ -1128,7 +1128,8 @@ byte-compile-eval
;; we arguably should add it to b-c-noruntime-functions,
;; but it's not clear it's worth the trouble
;; trying to recognize that case.
- (unless (get f 'function-history)
+ (unless (or (get f 'function-history)
+ (assq f byte-compile-function-environment))
(push f byte-compile-noruntime-functions)))))))))))))
(defun byte-compile-eval-before-compile (form)
next prev parent reply other threads:[~2023-06-29 4:51 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-06-22 19:56 bug#64232: 28.2; Incorrect(?) byte compilation warning about ‘ansi-color-apply-on-region’ Zack Weinberg
2023-06-24 11:49 ` Eli Zaretskii
2023-06-24 15:15 ` Zack Weinberg
2023-06-28 2:10 ` Michael Heerdegen
2023-06-28 13:41 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-06-29 3:43 ` Michael Heerdegen
2023-06-29 4:51 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors [this message]
2023-06-30 4:02 ` Michael Heerdegen
2023-06-30 6:00 ` Eli Zaretskii
2023-07-06 6:43 ` Eli Zaretskii
2023-07-07 16:10 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-07-07 18:15 ` Eli Zaretskii
2023-06-29 4:17 ` Michael Heerdegen
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