Ancient Greek apostrophe marking elision

[James Kass via Unicode]

On 2019-01-28 7:31 AM, Mark Davis ☕️ via Unicode wrote:
> Expecting people to type in hard-to-find invisible characters just to 
> correct double-click is not a realistic expectation.

True, which is why such entries, when consistent, are properly handled 
at the keyboard driver level.  It's a presumption that Greek classicists 
are already specifying fonts and using dedicated keyboard drivers.  
Based on the description provided by James Tauber, it should be 
relatively simple to make the keyboard insert some kind of joiner before 
U+2019 if it follows a Greek letter. This would not be visible to the 
end-user.

This approach would also mean that plain-text, which has no language 
tagging mechanism, would "get it right" cross-platform, cross-applications.