Re: Unicode grapheme clusters

From: Bruce Momjian <bruce(at)momjian(dot)us>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: Greg Stark <stark(at)mit(dot)edu>, Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Unicode grapheme clusters
Date: 2023-01-21 18:18:25
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On Sat, Jan 21, 2023 at 01:17:27PM -0500, Tom Lane wrote:
> Bruce Momjian <bruce(at)momjian(dot)us> writes:
> > I just checked if wcswidth() would honor graphene clusters, though
> > wcwidth() does not, but it seems wcswidth() treats characters just like
> > wcwidth():
> Well, that's at least potentially fixable within libc, while wcwidth
> clearly can never do this right.
> Probably our long-term answer is to avoid depending on wcwidth
> and use wcswidth instead. But it's hard to get excited about
> doing the legwork for that until popular libc implementations
> get it right.


Bruce Momjian <bruce(at)momjian(dot)us>

Embrace your flaws. They make you human, rather than perfect,
which you will never be.

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