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* bug#51926: 29.0.50; Narrow to defun fails with Javascript async functions
@ 2021-11-17 20:11 Matthias Meulien
  2021-11-18 10:25 ` Lars Ingebrigtsen
  0 siblings, 1 reply; 5+ messages in thread
From: Matthias Meulien @ 2021-11-17 20:11 UTC (permalink / raw)
  To: 51926


1. Create a buffer and enable `js-mode' in that buffer
2. Enter the following function definition:

async function test_async() {
  return true;
}

3. Move cursor past the "f" of the "function" keyword.

4. Call `narrow-to-defun' (C-x n d) and observe that the buffer now
displays the following:

function test_async() {
    // nothing to do
}

This is wrong (async has disappeared).



In GNU Emacs 29.0.50 (build 3, x86_64-pc-linux-gnu, GTK+ Version 3.24.24, cairo version 1.16.0)
 of 2021-11-14 built on carbon
Repository revision: 2ff42ad0e8468a5979a8c5db90333d9c2949bd2e
Repository branch: dev/mm
Windowing system distributor 'The X.Org Foundation', version 11.0.12011000
System Description: Debian GNU/Linux 11 (bullseye)

Configured using:
 'configure --with-native-compilation'

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

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

Major mode: JavaScript

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Load-path shadows:
/home/matthias/.config/emacs/elpa/transient-20211029.1405/transient hides /usr/local/share/emacs/29.0.50/lisp/transient
/home/matthias/.config/emacs/elpa/dictionary-20201001.1727/dictionary hides /usr/local/share/emacs/29.0.50/lisp/net/dictionary

Features:
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native-compile emacs)

Memory information:
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 (vectors 16 74556)
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 (intervals 56 15481 1242)
 (buffers 992 74))





^ permalink raw reply	[flat|nested] 5+ messages in thread

end of thread, other threads:[~2021-11-20  9:21 UTC | newest]

Thread overview: 5+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2021-11-17 20:11 bug#51926: 29.0.50; Narrow to defun fails with Javascript async functions Matthias Meulien
2021-11-18 10:25 ` Lars Ingebrigtsen
2021-11-18 11:30   ` Matthias Meulien
2021-11-19 22:22   ` Matthias Meulien
2021-11-20  9:21     ` Lars Ingebrigtsen

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