[tz] Proposed patch - Theory notes for backward file

[Guy Harris]

On Sep 4, 2013, at 10:01 AM, Stephen Colebourne <scolebourne at joda.org> wrote:

> +The file 'backward' consists of Link entries mapping deprecated names
> +to their replacements. Usage of a deprecated name is discouraged.
> +As such, the file permits canonicalization, where the use of a
> +deprecated name can be automatically replaced with the replacement.

Note that, as Norbert Linderberg indicates, this is *NOT* the canonicalization being proposed for JavaScript; the canonicalization being proposed for JavaScript is to replace a name that is defined as a Link, *whether it's defined in the "backward" file or not*, with its replacement.

It might be an useful form of canonicalization, but it's not the JavaScript form, for what that's worth.