-preview switches

[Jonathan M Davis]

On Thursday, April 2, 2020 12:30:49 AM MDT Jacob Carlborg via Digitalmars-d 
wrote:
> On 2020-04-01 21:15, Steven Schveighoffer wrote:
> > I think compiler deprecation messages can be designated as not becoming
> > errors for -de.
>
> Not sure I follow. The whole point of the `-de` flag is to turn
> deprecation messages into errors. By default, they're not errors.

For compiler changes which have involved deprecated features or behavior,
for better or worse, the messages haven't necessarily been affected by the
compiler flags related to deprecation, whereas because deprecations in
druntime or Phobos have actually used the deprecated keyword, they've been
affected by the deprecation flags.

- Jonathan M Davis