bug#36717: 25.3; greek.el: deprecated vowel+oxia combinations should be replaced with vowel+tonos counterparts

[Eli Zaretskii <eliz@gnu.org>]

> From: Robert Pluim <rpluim@gmail.com>
> Cc: 36717@debbugs.gnu.org,  alessi@robertalessi.net
> Date: Fri, 19 Jul 2019 16:41:07 +0200
> 
> >>>>> On Fri, 19 Jul 2019 17:26:59 +0300, Eli Zaretskii <eliz@gnu.org> said:
> 
>     Eli> As hinted by the last line above, you should try the reverse: type
>     Eli> "C-x 8 RET 3b9" followed by "C-x 8 RET 301".  Then compare that with
>     Eli> what you get for "C-x 8 RET 3af".
> 
> OK, thatʼs clear now. No sane person would ever do it that way, though :-)

Exactly my point, wrt the "advice" to use characters from the Basic
Greek block + diacriticals instead of the precomposed characters.

> >> We donʼt provide both forms within the same input method.
> 
>     Eli> I don't see why this would be a problem.  We should provide the
>     Eli> variant expected by modern Greek in the input methods which target
>     Eli> modern Greek, and the variants for Classic Greek in input methods
>     Eli> which target that.  Bonus points for providing at least some of the
>     Eli> other variants in each type of the input methods.
> 
> That would be convenient, but should perhaps be a new, separate, input
> method.

Could be.  However, the existing input methods already provide some of
the characters in both variants, and they certainly provide both oxia
and tonos as separate diacriticals.