bug#33503: 27.0.50; EWW error copyig URL

[Live System User]

Hi,

        When clicking on "Copy Page URL" while viewing a webpage
        using eww, I got the following error:

Debugger entered--Lisp error: (wrong-type-argument stringp nil)
  string-match("\\`-+\\'" nil)
  menu-bar-update-yank-menu(nil nil)
  kill-new(nil)
  eww-copy-page-url()
  funcall-interactively(eww-copy-page-url)
  call-interactively(eww-copy-page-url nil nil)
  command-execute(eww-copy-page-url)


        Thanks.




In GNU Emacs 27.0.50 (build 90, x86_64-pc-linux-gnu, GTK+ Version 3.20.10)
 of 2018-11-24 built on localhost.localdomain
Repository revision: 7559c6a8ba3964a8b1c7a699e39453d538e1c5f6
Repository branch: master
Windowing system distributor 'Fedora Project', version 11.0.11803000
System Description: Fedora 24 (Workstation Edition)

Recent messages:
nnimap read 299k from imap.aim.com
Fetching headers for nnimap+aol:INBOX...done
Scoring...done
Sorting threads...done
Generating summary...done
Auto-saving...done
nil
menu-bar-update-yank-menu: Wrong type argument: stringp, nil
Making completion list...
mwheel-scroll: Beginning of buffer

Configured using:
 'configure 'CFLAGS=-DMAIL_USE_LOCKF -O0 -ggdb3 -pipe -Wall
 -Werror=format-security -fexceptions -fstack-protector-strong
 --param=ssp-buffer-size=4 -grecord-gcc-switches -m64 -mtune=generic'
 LDFLAGS=-Wl,-z,relro
 --prefix=/tmp/emacs-27.0-git-master
 --with-dbus --with-gif --with-jpeg --with-png --with-rsvg --with-lcms2
 --with-tiff --with-xft --with-xpm --with-x-toolkit=gtk3 --with-gpm=yes
 --with-xwidgets --with-modules --with-json'

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

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

Major mode: Summary

Minor modes in effect:
  gnus-desktop-notify-mode: t
  tooltip-mode: t
  global-eldoc-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
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  buffer-read-only: t
  line-number-mode: t
  transient-mark-mode: t

Load-path shadows:
None found.

Features:
(shadow sort mail-extr emacsbug sendmail qp gnus-ml disp-table macros
kmacro cursor-sensor nndraft nnmh nndoc mm-archive url-handlers utf-7
rfc2104 nnfolder nnagent nnml gnus-agent gnus-srvr gnus-score score-mode
nnvirtual gnus-msg gnus-cache gnus-demon nntp gnus-desktop-notify
easy-mmode notifications dbus epa-file nnreddit gnus-art mm-uu mml2015
mm-view mml-smime smime dig cl sieve sieve-mode sieve-manage sasl
sasl-anonymous sasl-login sasl-plain advice nnir gnus-sum gnus-group
gnus-undo gnus-start gnus-cloud nnimap nnmail mail-source utf7 netrc
gnus-spec gnus-int gnus-range message dired dired-loaddefs rfc822 mml
mml-sec epa derived epg epg-config mm-decode mm-bodies mm-encode
mailabbrev gmm-utils mailheader gnus-win nnoo misearch multi-isearch
help-fns radix-tree cl-print debug backtrace find-func cus-start
cus-load pp timezone shr-color color parse-time face-remap cl-extra
help-mode gnutls network-stream url-http mail-parse rfc2231 url-gw nsm
rmc url-cache url-auth eww easymenu mm-url gnus nnheader gnus-util rmail
rmail-loaddefs rfc2047 rfc2045 ietf-drums time-date mail-utils wid-edit
mm-util mail-prsvr url-queue url url-proxy url-privacy url-expand
url-methods url-history url-cookie url-domsuf url-util url-parse
auth-source cl-seq eieio eieio-core cl-macs eieio-loaddefs
password-cache json map url-vars mailcap shr text-property-search puny
svg xml seq byte-opt gv bytecomp byte-compile cconv dom browse-url
format-spec cl-loaddefs cl-lib elec-pair mule-util tooltip eldoc
electric uniquify ediff-hook vc-hooks lisp-float-type mwheel term/x-win
x-win term/common-win x-dnd tool-bar dnd fontset image regexp-opt fringe
tabulated-list replace newcomment text-mode elisp-mode lisp-mode
prog-mode register page menu-bar rfn-eshadow isearch timer select
scroll-bar mouse jit-lock font-lock syntax facemenu font-core
term/tty-colors frame cl-generic 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 charscript charprop case-table epa-hook jka-cmpr-hook
help simple abbrev obarray minibuffer cl-preloaded nadvice loaddefs
button faces cus-face macroexp files text-properties overlay sha1 md5
base64 format env code-pages mule custom widget hashtable-print-readable
backquote threads dbusbind inotify lcms2 dynamic-setting
system-font-setting font-render-setting xwidget-internal move-toolbar
gtk x-toolkit x multi-tty make-network-process emacs)

Memory information:
((conses 16 30040383 89223)
 (symbols 48 129168 23)
 (strings 32 168425 13080)
 (string-bytes 1 10493261)
 (vectors 16 31469)
 (vector-slots 8 1037331 71044)
 (floats 8 404 1041)
 (intervals 56 90748 1206)
 (buffers 992 38)
 (heap 1024 616599 514982))