GNU bug report logs - #31459
25.3; Uninitialised unicode-property-table-internal

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From: "Peter" <craven <at> gmx.net>
To: 31459 <at> debbugs.gnu.org
Subject: bug#31459: 25.3; Uninitialised unicode-property-table-internal
Date: Tue, 15 May 2018 10:50:54 +0200

I've run into the following bug with Emacs GNU Emacs 25.3.1 (x86_64-pc-linux-gnu, GTK+ Version 3.22.26) of 2018-02-09:

When starting up a new Emacs with `emacs -Q', running the following elisp results in garbage:

(let ((names (unicode-property-table-internal 'name)))
  (message "%s" (get-unicode-property-internal names #x1f600))
  ;; grinning face emoji, should return "GRINNING FACE"
  )

This does not in fact show "GRINNING FACE", but what seems like a random
string, e.g. (after string-to-list):
(0 1805 140 1 3 534 447 0 140 3 1804 64 1314 0 534 140 3 104 429 1 85 9 534 447 1 104 1279 1056 2 1803 6 266 447 1 58 3455 1 52 1802 0 1801 140 0 534 140 3 534 447 0 140 3454 3453 1302 0 1800 140 0 534 140 3 314 6 672 447 1 55 1811 0 3452 46 46 46 46)

*After* I run M-x counsel-unicode-char, things work fine.

It seems that the unicode property table is somehow uninitialised initially, and gets initialised by something that counsel-unicode-char does. Is there a way I can run this initialisation myself? I've looked at the elisp and C sources, but haven't been able to find what I'm doing incorrectly here :-/

Thanks for any help with this!

Greetings, Peter



In GNU Emacs 25.3.1 (x86_64-pc-linux-gnu, GTK+ Version 3.22.26)
 of 2018-02-09 built on bisson
Windowing system distributor 'The X.Org Foundation', version 11.0.11906000
Configured using:
 'configure --prefix=/usr --sysconfdir=/etc --libexecdir=/usr/lib
 --localstatedir=/var --with-x-toolkit=gtk3 --with-xft --with-modules
 'CFLAGS=-march=x86-64 -mtune=generic -O2 -pipe -fstack-protector-strong
 -fno-plt' CPPFLAGS=-D_FORTIFY_SOURCE=2
 LDFLAGS=-Wl,-O1,--sort-common,--as-needed,-z,relro,-z,now'

Configured features:
XPM JPEG TIFF GIF PNG RSVG IMAGEMAGICK SOUND GPM DBUS GCONF GSETTINGS
NOTIFY ACL GNUTLS LIBXML2 FREETYPE M17N_FLT LIBOTF XFT ZLIB
TOOLKIT_SCROLL_BARS GTK3 X11 MODULES

Important settings:
  value of $LANG: en_GB.UTF-8
  locale-coding-system: utf-8-unix

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