Ancient Greek apostrophe marking elision

[Richard Wordingham via Unicode]

On Sat, 26 Jan 2019 17:11:49 -0800
Asmus Freytag via Unicode <unicode at unicode.org> wrote:

> To make matters worse, users for languages that "should" use U+02BC
> aren't actually consistent; much data uses U+2019 or U+0027. Ordinary
> users can't tell the difference (and spell checkers seem not
> successful in enforcing the practice).

That appears to contradict Michael Everson's remark about a Polynesian
need to distinguish the two visually.

Richard.