Re: [PATCH] Make display-time-mode time zone configurable

[Paul Eggert]

Mark Oteiza wrote:
> +(defcustom display-time-zone nil
> +  "Variable specifying the time zone used in `display-time-string-forms'.
> +See the function `format-time-string' for an explanation of
> +its ZONE variable."
> +  :type '(choice (const :tag "Emacs Local Time" nil)
> +                 (const :tag "Universal Time" t)
> +                 (const :tag "System Wall Clock Time" wall)
> +                 (string "Time Zone Rule"))
> +  :link '(function-link format-time-string)
> +  :group 'display-time)

This new defcustom seems to duplicate some or all of the existing defcustom 
time-stamp-time-zone. Should there be just custom var? or if there should be 
two, how should they differ in operation?