Subject: 26.1; Unicode codepoint 177, PLUS-MINUS SIGN doesn't insert

From: Drew Adams <[email-masked]>
Date: Fri, 21 Dec 2018 08:50:51 -0800 (PST)

See https://emacs.stackexchange.com/q/46713/105

emacs -Q

(global-set-key (kbd "C-o") "±")

Then try `C-o'.  Instead of inserting the char you get `C-u 1-' in the
minibuffer.  Emacs seems to be interpreting `C-o' as a partial numeric
prefix arg.

But this works fine:

(global-set-key (kbd "C-o") "☬") to insert ☬.

In GNU Emacs 26.1 (build 1, x86_64-w64-mingw32)
 of 2018-05-30
Repository revision: 07f8f9bc5a51f5aa94eb099f3e15fbe0c20ea1ea
Windowing system distributor `Microsoft Corp.', version 10.0.16299
Configured using:
 `configure --without-dbus --host=x86_64-w64-mingw32
 --without-compress-install 'CFLAGS=-O2 -static -g3''