Note that every other character appears to work with this same syntax that neg doesn't,  take for example:

(global-set-key (kbd "C-x g > =") "≥")

That and every other character in quotes that I have tried, works fine.  Only neg is different.

On Mon, Feb 15, 2016 at 1:03 PM, Andreas Schwab <schwab@suse.de> wrote:
Alexis <flexibeast@gmail.com> writes:

> The documentation for the `global-set-key` function, at least in 24.5.3
> and in the emacs-25 branch as at d9ea7950, doesn't mention this
> possibility:
>
>    (global-set-key KEY COMMAND)
>
>    Give KEY a global binding as COMMAND.  COMMAND is the command
> definition to use; usually it is a symbol naming an
> interactively-callable function.
>
> Perhaps it should be modified to refer to COMMAND-OR-VECTOR?

A vector is a kind of command.  It's a keyboard macro.

ELISP> (commandp [?¬])
t

For non-interactive use, define-key is preferred, which has all details.

Andreas.

--
Andreas Schwab, SUSE Labs, schwab@suse.de
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"And now for something completely different."