Re: [PATCH] libcpp: Update cpp_wcwidth() to Unicode 14.0.0

[Lewis Hyatt <lhyatt@gmail.com>]

On Fri, Jun 24, 2022 at 3:26 PM Joseph Myers <joseph@codesourcery.com> wrote:
>
> On Fri, 24 Jun 2022, David Malcolm via Gcc-patches wrote:
>
> > > BTW, is this something simple enough I should just commit it without
> > > bugging
> > > the list for approval?
> >
> > The patch seems reasonable to me, but Joseph seems to be the expert on
> > i18n-related matters.
> >
> > Joseph, do we have a policy on this?
>
> I don't think we have a policy on Unicode updates specifically, but the
> general principle for updating files maintained outside GCC and copied
> verbatim into the GCC sources doesn't require prior approval.
>
> (Note that Unicode data is also used to generate ucnid.h - data for
> Unicode characters in identifiers - we should probably also include
> DerivedNormalizationProps.txt and DerivedCoreProperties.txt in the
> checked-in Unicode data for that purpose.)

Thank you both for the feedback. I have pushed the change for wcwidth,
and then I will follow up with a patch that adds these other two
Unicode data files and updates contrib/unicode/README so that the
procedure there will update both wcwidth and ucnid.h... and the patch
will follow that procedure to update ucnid.h from Unicode 13 to
Unicode 14.

-Lewis