I think I have solved this problem. My work computer has Windows language options enabled by default that appear to conflict with emacs. I disabled the "Auto-Adjust" option on the language toolbar, and I removed an "Alt-Shift" hotkey for switching the keyboard language, and the problems with funny characters in emacs have gone away.

From: Tandon, Neil (EC)
Sent: September 21, 2017 12:34 PM
To: 'bug-gnu-emacs@gnu.org'
Subject: 25.2; erratic keyboard mapping


When I start emacs, my keyboard mapping is fine. But after some time, the keyboard mapping spontaneously changes. For example:

-instead of backslash, < appears

-when I type left curly brace, right curly brace or apostrophe, nothing appears

-when I type left curly brace twice, ^^ appears

-when I type right curly brace twice, `` appears

Switching out of Latex mode has no effect. No other windows applications are affected. For example, my keyboard mapping in Notepad works fine. When I restart emacs, the keyboard mapping returns to normal.

I have not been able to pinpoint a precise sequence of events or amount of time leading up to the change of keyboard mapping.

Neil



In GNU Emacs 25.2.1 (x86_64-w64-mingw32)

of 2017-04-24 built on LAPHROAIG

Windowing system distributor 'Microsoft Corp.', version 6.1.7601

Configured using:

'configure --without-dbus --without-compress-install 'CFLAGS=-O2

-static -g3''



Configured features:

XPM JPEG TIFF GIF PNG RSVG SOUND NOTIFY ACL GNUTLS LIBXML2 ZLIB

TOOLKIT_SCROLL_BARS



Important settings:

  value of $LANG: ENU

  locale-coding-system: cp1252



Major mode: LaTeX



Minor modes in effect:

  shell-dirtrack-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

  line-number-mode: t

  transient-mark-mode: t



Recent messages:

Auto-saving...done

Mark set

Saving file m:/My Documents/dynex-tex/supplementary3.tex...

Wrote m:/My Documents/dynex-tex/supplementary3.tex

Auto-saving...done

Quit [2 times]

Saving file m:/My Documents/dynex-tex/supplementary3.tex...

Wrote m:/My Documents/dynex-tex/supplementary3.tex

Saving file m:/My Documents/dynex-tex/supplementary3.tex...

Wrote m:/My Documents/dynex-tex/supplementary3.tex



Load-path shadows:

None found.



Features:

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

mml-sec password-cache epg epg-config gnus-util mm-decode mm-bodies

mm-encode mail-parse rfc2231 mailabbrev gmm-utils mailheader sendmail

rfc2047 rfc2045 ietf-drums mm-util help-fns help-mode easymenu

cl-loaddefs pcase cl-lib mail-prsvr mail-utils misearch multi-isearch

tex-mode compile shell pcomplete comint ansi-color ring latexenc

time-date mule-util tooltip eldoc electric uniquify ediff-hook vc-hooks

lisp-float-type mwheel dos-w32 ls-lisp disp-table w32-win w32-vars

term/common-win tool-bar dnd fontset image regexp-opt fringe

tabulated-list newcomment elisp-mode lisp-mode prog-mode register page

menu-bar rfn-eshadow timer select scroll-bar mouse jit-lock font-lock

syntax facemenu font-core 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 charscript case-table epa-hook jka-cmpr-hook help

simple abbrev 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

w32notify w32 multi-tty make-network-process emacs)



Memory information:

((conses 16 112318 5317)

(symbols 56 20559 0)

(miscs 48 123 158)

(strings 32 19936 2973)

(string-bytes 1 553502)

(vectors 16 13111)

(vector-slots 8 437405 5388)

(floats 8 169 890)

(intervals 56 4001 3)

(buffers 976 23))