Evaluate the following

   

   (global-set-key (kbd "C-x g neg") "¬")

Now use it, and instead of getting neg, you get the error:

   After 0 kbd macro iterations: user-error: No M-x tags-search or M-x tags-query-replace in progress

In GNU Emacs 24.5.1 (x86_64-pc-linux-gnu, GTK+ Version 3.18.2)

 of 2015-10-24 on trouble, modified by Debian

Windowing system distributor `The X.Org Foundation', version 11.0.11703000

System Description: Debian GNU/Linux testing (stretch)

Configured using:

 `configure --build x86_64-linux-gnu --prefix=/usr

 --sharedstatedir=/var/lib --libexecdir=/usr/lib

 --localstatedir=/var/lib --infodir=/usr/share/info

 --mandir=/usr/share/man --with-pop=yes

 --enable-locallisppath=/etc/emacs24:/etc/emacs:/usr/local/share/emacs/24.5/site-lisp:/usr/local/share/emacs/site-lisp:/usr/share/emacs/24.5/site-lisp:/usr/share/emacs/site-lisp

 --build x86_64-linux-gnu --prefix=/usr --sharedstatedir=/var/lib

 --libexecdir=/usr/lib --localstatedir=/var/lib

 --infodir=/usr/share/info --mandir=/usr/share/man --with-pop=yes

 --enable-locallisppath=/etc/emacs24:/etc/emacs:/usr/local/share/emacs/24.5/site-lisp:/usr/local/share/emacs/site-lisp:/usr/share/emacs/24.5/site-lisp:/usr/share/emacs/site-lisp

 --with-x=yes --with-x-toolkit=gtk3 --with-toolkit-scroll-bars

 'CFLAGS=-g -O2 -fstack-protector-strong -Wformat

 -Werror=format-security -Wall' CPPFLAGS=-D_FORTIFY_SOURCE=2

 LDFLAGS=-Wl,-z,relro'

Important settings:

  value of $LANG: en_US.utf8

  locale-coding-system: utf-8-unix

Major mode: Shell

Minor modes in effect:

  dirtrack-mode: t

  tooltip-mode: t

  electric-indent-mode: t

  mouse-wheel-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

  line-number-mode: t

  transient-mark-mode: t

Recent messages:

uncompressing utf-7.el.gz...done

Note: file is write protected

End of buffer [3 times]

Mark set

Making completion list...

Quit [2 times]

Making completion list...

Mark set

C-c M-w is undefined

Mark activated

Load-path shadows:

/usr/share/emacs/24.5/site-lisp/debian-startup hides /usr/share/emacs/site-lisp/debian-startup

/usr/share/emacs24/site-lisp/latex-cjk-thai/thai-word hides /usr/share/emacs/24.5/lisp/language/thai-word

Features:

(shadow sort gnus-util mail-extr emacsbug message format-spec rfc822 mml

mml-sec mm-decode mm-bodies mm-encode mail-parse rfc2231 mailabbrev

gmm-utils mailheader sendmail rfc2047 rfc2045 ietf-drums mm-util

mail-prsvr mail-utils dired pcmpl-gnu thai-util thai-word jka-compr

iso-transl pcmpl-unix rect mule-util ispell misearch multi-isearch

help-mode vc-git dirtrack shell pcomplete info package epg-config

wheatgrass-theme slime-fancy slime-trace-dialog slime-fontifying-fu

slime-package-fu slime-references slime-compiler-notes-tree

slime-scratch slime-presentations advice bridge slime-mdot-fu

slime-enclosing-context slime-fuzzy slime-fancy-trace

slime-fancy-inspector slime-c-p-c slime-editing-commands slime-autodoc

eldoc slime-repl elp slime-parse slime byte-opt bytecomp byte-compile

cconv derived cl-extra help-fns gud apropos compile etags arc-mode

archive-mode noutline outline easy-mmode easymenu pp comint ansi-color

ring hyperspec cl-macs thingatpt browse-url cl gv slime-autoloads

edmacro kmacro cl-loaddefs cl-lib time-date tooltip electric uniquify

ediff-hook vc-hooks lisp-float-type mwheel x-win x-dnd tool-bar dnd

fontset image regexp-opt fringe tabulated-list newcomment lisp-mode

prog-mode register page menu-bar rfn-eshadow timer select scroll-bar

mouse jit-lock font-lock syntax facemenu font-core frame cham georgian

utf-8-lang misc-lang vietnamese tibetan thai tai-viet lao korean

japanese hebrew greek romanian slovak czech european ethiopic indian

cyrillic chinese case-table epa-hook jka-cmpr-hook help simple abbrev

minibuffer 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 make-network-process

dbusbind gfilenotify dynamic-setting system-font-setting

font-render-setting move-toolbar gtk x-toolkit x multi-tty emacs)

Memory information:

((conses 16 538849 23698)

  (symbols 48 36343 0)

  (miscs 40 791 842)

  (strings 32 89094 14725)

  (string-bytes 1 2124898)

  (vectors 16 31542)

  (vector-slots 8 1464374 205774)

  (floats 8 108 762)

  (intervals 56 18016 1613)

  (buffers 960 28)

  (heap 1024 100326 1595))