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Subject: bug#67920: 30.0.50; "*Compile-Log" is not `compilation-mode' if `byte-compile-file' found "no lexical-binding"
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`byte-compile-file' in current master branch behaves strange if the file
is not including "-*- lexical-binding: t; -*-" mark.

(progn
  (with-temp-file "foo.el" ())
  (byte-compile-file "foo.el"))

The above code outputs to "*Compile-Log" with `special-mode' like following

	In toplevel form:
	foo.el:1:1: Warning: file has no $B!F(Blexical-binding$B!G(B directive on its first
	    line

If there is "-*- lexical-binding: t; -*-" mark in the file,
"*Compile-Log*" is with `compilation-mode' as expected.



In GNU Emacs 30.0.50 (build 1, x86_64-pc-linux-gnu, GTK+ Version
 3.24.38, cairo version 1.18.0) of 2023-12-19 built on devron
Repository revision: d0e3dfa764cdb5c15c2a525b455df495097a86bb
Repository branch: master
Windowing system distributor 'The X.Org Foundation', version 11.0.12101009
System Description: Debian GNU/Linux trixie/sid

Configured using:
 'configure --with-x-toolkit=gtk3 --without-xim --with-imagemagick
 --with-wide-int --with-native-compilation=aot'

Configured features:
ACL CAIRO DBUS FREETYPE GIF GLIB GMP GNUTLS GSETTINGS HARFBUZZ
IMAGEMAGICK JPEG JSON LCMS2 LIBOTF LIBSELINUX LIBSYSTEMD LIBXML2
M17N_FLT MODULES NATIVE_COMP NOTIFY INOTIFY PDUMPER PNG RSVG SECCOMP
SOUND SQLITE3 THREADS TIFF TOOLKIT_SCROLL_BARS WEBP X11 XDBE XIM XINPUT2
XPM GTK3 ZLIB

Important settings:
  value of $LANG: ja_JP.UTF-8
  value of $XMODIFIERS: @im=ibus
  locale-coding-system: utf-8-unix

Major mode: Group

Minor modes in effect:
  gnus-topic-mode: t
  gnus-undo-mode: t
  bug-reference-mode: t
  server-mode: t
  flycheck-pos-tip-mode: t
  global-flycheck-mode: t
  global-company-mode: t
  company-mode: t
  auto-insert-mode: t
  yas-global-mode: t
  yas-minor-mode: t
  electric-pair-mode: t
  icomplete-mode: t
  savehist-mode: t
  repeat-mode: t
  tooltip-mode: t
  global-eldoc-mode: t
  show-paren-mode: t
  electric-indent-mode: t
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  file-name-shadow-mode: t
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  font-lock-mode: t
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  column-number-mode: t
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  indent-tabs-mode: t
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  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t

Load-path shadows:
None found.

Features:
(shadow bbdb-message mailalias emacsbug mule-util sort gnus-cite
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ucs-normalize uni-confusable textsec-check gnus-bcklg qp hl-line
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bbdb-gnus-aux gnus-ml disp-table gnus-topic url-http url-gw url-cache
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spam-stat bbdb-com crm bbdb bbdb-site timezone gnus-uu yenc gnus-demon
gnus-delay gnus-draft gnus-agent gnus-srvr gnus-score score-mode
nnvirtual nntp gnus-cache gnus-msg gnus-art mm-uu mml2015 mm-view
mml-smime smime gnutls dig gnus-sum shr pixel-fill kinsoku url-file svg
dom nndraft nnmh gnus-xoauth2 oauth2-ext plstore gnus-group gnus-undo
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git-modes-autoloads info compat-autoloads gnuplot-autoloads
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cl-preloaded button loaddefs theme-loaddefs faces cus-face macroexp
files window text-properties overlay sha1 md5 base64 format env
code-pages mule custom widget keymap hashtable-print-readable backquote
threads dbusbind inotify lcms2 dynamic-setting system-font-setting
font-render-setting cairo gtk x-toolkit xinput2 x multi-tty move-toolbar
make-network-process native-compile emacs)

Memory information:
((conses 16 1140993 1196637) (symbols 48 27817 12)
 (strings 32 1233466 63605) (string-bytes 1 49423824)
 (vectors 16 369106) (vector-slots 8 4736667 344176)
 (floats 8 91695 106205) (intervals 56 5080 3514) (buffers 984 30))

-- 
OGAWA Hirofumi <hirofumi@HIDDEN>

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From: help-debbugs@HIDDEN (GNU bug Tracking System)
To: OGAWA Hirofumi <hirofumi@HIDDEN>
Subject: bug#67920: Acknowledgement (30.0.50; "*Compile-Log" is not
 `compilation-mode' if `byte-compile-file' found "no lexical-binding")
Message-ID: <handler.67920.B.17030546374681.ack <at> debbugs.gnu.org>
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Subject: bug#67920: 30.0.50; "*Compile-Log" is not `compilation-mode' if `byte-compile-file' found "no lexical-binding"
Resent-From: Eli Zaretskii <eliz@HIDDEN>
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To: OGAWA Hirofumi <hirofumi@HIDDEN>, Mattias =?UTF-8?Q?Engdeg=C3=A5rd?= <mattiase@HIDDEN>
Cc: 67920 <at> debbugs.gnu.org
Date: Thu, 21 Dec 2023 15:07:15 +0200
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From: Eli Zaretskii <eliz@HIDDEN>
In-Reply-To: <87sf3xtlv6.fsf@HIDDEN> (message from OGAWA Hirofumi
 on Wed, 20 Dec 2023 15:43:25 +0900)
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> From: OGAWA Hirofumi <hirofumi@HIDDEN>
> Date: Wed, 20 Dec 2023 15:43:25 +0900
> 
> 
> `byte-compile-file' in current master branch behaves strange if the file
> is not including "-*- lexical-binding: t; -*-" mark.
> 
> (progn
>   (with-temp-file "foo.el" ())
>   (byte-compile-file "foo.el"))
> 
> The above code outputs to "*Compile-Log" with `special-mode' like following
> 
> 	In toplevel form:
> 	foo.el:1:1: Warning: file has no ‘lexical-binding’ directive on its first
> 	    line
> 
> If there is "-*- lexical-binding: t; -*-" mark in the file,
> "*Compile-Log*" is with `compilation-mode' as expected.

Mattias, this seems to be due to your change in commit a3db503351e:
the call to byte-compile-warn-x you added there logs a warning too
early, which has two adverse effects: (a) the compilation directory is
not logged as the directory of the file being compiled (Emacs thinks
it's the original directory where Emacs was started), and (b) the
value of byte-compile-last-logged-file is set to the name of the file
being compiled, which then defeats the logic in byte-compile-log-file
of turning on emacs-lisp-compilation-mode in the log buffer.

Could you please look into this?

Message sent to bug-gnu-emacs@HIDDEN:

Subject: bug#67920: 30.0.50; "*Compile-Log" is not `compilation-mode' if `byte-compile-file' found "no lexical-binding"
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21 dec. 2023 kl. 14.07 skrev Eli Zaretskii <eliz@HIDDEN>:

> From: OGAWA Hirofumi <hirofumi@HIDDEN>

>> `byte-compile-file' in current master branch behaves strange if the file
>> is not including "-*- lexical-binding: t; -*-" mark.

> Mattias, this seems to be due to your change in commit a3db503351e:

Guilty!

Ogawa-san, thank you for reporting this.
I've pushed a fix to master (c638a40d).

Last modified: Sat, 20 Jan 2024 12:30:02 UTC

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