GNU bug report logs - #77883
31.0.50; C-c C-e in *scratch* generates a missing lexical binding cookie warning

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: tracker <at> debbugs.gnu.org
Subject: bug#78206: closed (31.0.50; false warning "Missing
 ‘lexical-binding’ cookie")
Date: Sat, 03 May 2025 13:29:02 +0000

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Your message dated Sat, 03 May 2025 16:28:43 +0300
with message-id <86tt61j01g.fsf <at> gnu.org>
and subject line Re: bug#77883: 31.0.50; C-c C-e in *scratch* generates a missing lexical binding cookie warning
has caused the debbugs.gnu.org bug report #77883,
regarding 31.0.50; false warning "Missing ‘lexical-binding’ cookie"
to be marked as done.

(If you believe you have received this mail in error, please contact
help-debbugs <at> gnu.org.)


-- 
77883: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=77883
GNU Bug Tracking System
Contact help-debbugs <at> gnu.org with problems

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From: Andreas Röhler <andreas.roehler <at> easy-emacs.de>
To: bug-gnu-emacs <at> gnu.org
Subject: 31.0.50; false warning "Missing ‘lexical-binding’ cookie"
Date: Fri, 2 May 2025 11:33:02 +0200

When evaluating a narrowed part of buffer, get false "Warning (files): 
Missing ‘lexical-binding’ cookie".

Maybe check for something like

(/= (buffer-size) (- (point-max) (point-min)))

?

In GNU Emacs 31.0.50 (build 1, x86_64-pc-linux-gnu, GTK+ Version
 3.24.33, cairo version 1.16.0) of 2025-05-02 built on kanu
Repository revision: 3f8f738d1d6b583415aa5d5584299794838316ca
Repository branch: master
Windowing system distributor 'The X.Org Foundation', version 11.0.12101004
System Description: Ubuntu 22.04.5 LTS

Configured using:
 'configure --with-mailutils --with-modules -with-tree-sitter'

Configured features:
ACL CAIRO DBUS FREETYPE GIF GLIB GMP GNUTLS GSETTINGS HARFBUZZ JPEG
LIBOTF LIBSELINUX LIBSYSTEMD LIBXML2 MODULES NOTIFY INOTIFY PDUMPER PNG
RSVG SECCOMP SOUND THREADS TIFF TOOLKIT_SCROLL_BARS TREE_SITTER X11 XDBE
XIM XINERAMA XINPUT2 XPM XRANDR GTK3 ZLIB

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

Major mode: Elisp/l

Minor modes in effect:
  tooltip-mode: t
  global-eldoc-mode: t
  eldoc-mode: t
  show-paren-mode: t
  electric-indent-mode: t
  mouse-wheel-mode: t
  tool-bar-mode: t
  menu-bar-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  blink-cursor-mode: t
  minibuffer-regexp-mode: t
  line-number-mode: t
  indent-tabs-mode: t
  transient-mark-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t

Load-path shadows:
None found.

Features:
(shadow sort mail-extr emacsbug lisp-mnt warnings icons vc-filewise
vc-rcs log-view log-edit message sendmail mailcap yank-media puny rfc822
mml mml-sec password-cache epa derived epg rfc6068 epg-config gnus-util
text-property-search time-date subr-x mm-decode mm-bodies mm-encode
mail-parse rfc2231 rfc2047 rfc2045 mm-util ietf-drums mail-prsvr
mailabbrev mail-utils gmm-utils mailheader ring add-log easy-mmode
pcvs-util dired-aux cl-loaddefs cl-lib dired dired-loaddefs rmc
iso-transl tooltip cconv eldoc paren electric uniquify ediff-hook
vc-hooks lisp-float-type elisp-mode mwheel term/x-win x-win
term/common-win x-dnd touch-screen tool-bar dnd fontset image regexp-opt
fringe tabulated-list replace newcomment text-mode lisp-mode prog-mode
register page tab-bar menu-bar rfn-eshadow isearch easymenu timer select
scroll-bar mouse jit-lock font-lock syntax font-core term/tty-colors
frame minibuffer nadvice seq simple cl-generic indonesian philippine
cham georgian utf-8-lang misc-lang vietnamese tibetan thai tai-viet lao
korean japanese eucjp-ms cp51932 hebrew greek romanian slovak czech
european ethiopic indian cyrillic chinese composite emoji-zwj charscript
charprop case-table epa-hook jka-cmpr-hook help abbrev obarray oclosure
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 dynamic-setting system-font-setting
font-render-setting cairo gtk x-toolkit xinput2 x multi-tty move-toolbar
make-network-process tty-child-frames emacs)

Memory information:
((conses 16 97864 26215) (symbols 48 17182 0) (strings 32 39024 2454)
 (string-bytes 1 654016) (vectors 16 11130)
 (vector-slots 8 129218 11909) (floats 8 27 18) (intervals 56 638 8)
 (buffers 992 15))

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From: Eli Zaretskii <eliz <at> gnu.org>
To: Stefan Monnier <monnier <at> iro.umontreal.ca>
Cc: michael_heerdegen <at> web.de, 77883-done <at> debbugs.gnu.org,
 spwhitton <at> spwhitton.name
Subject: Re: bug#77883: 31.0.50; C-c C-e in *scratch* generates a missing
 lexical binding cookie warning
Date: Sat, 03 May 2025 16:28:43 +0300

> From: Stefan Monnier <monnier <at> iro.umontreal.ca>
> Cc: michael_heerdegen <at> web.de,  spwhitton <at> spwhitton.name,  77883 <at> debbugs.gnu.org
> Date: Sat, 03 May 2025 09:12:32 -0400
> 
> > I prefer the latter solution, as it sounds to me less ad-hoc.  Any
> > objections to installing the below on the master branch?
> 
> LGTM.

Thanks, installed on master, and closing the bug.

> > -settings in the buffer, and if there is no such setting, the buffer
> > -will be evaluated without lexical binding.
> > +settings in the buffer; if there is no such setting, and the
> > +buffer-local value of the variable is nil, the buffer will be
> > +evaluated without lexical binding.
> 
> BTW, this last point is not completely true any more: it depends
> on the `default-toplevel-value`.

Right, fixed.

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