New Package: greek-polytonic.el (First-time contributor)

[Johannes Choo <jhanschoo@gmail.com>]

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Hi all,

I'd like to contribute a new package greek-polytonic.el to ELPA, or where
ever it is more appropriate. It's a single file located at
https://github.com/jhanschoo/quail-greek-polytonic/blob/master/greek-polytonic.el
,
and I'd like instructions on next steps. I have no problem with giving the
FSF full copyright rights.

Rationale: Polytonic Greek input is of interest primarily to classicists,
people who want to reproduce Ancient Greek quotations, and for input of
Katharevousa Greek. There already exist several input methods for Polytonic
Greek in the greek.el file distributed with Emacs, but this file improves
over them in the following 2 ways:

1) Mapping based on "standard" Win and Mac layouts—The existing input
methods' mappings are modeled after ad-hoc polytonic input schemes devised
by classicists, in conjunction with specialized software. The mappings I
use are modeled after Mac and Windows polytonic Greek keyboard mappings,
(in turn modeled after monotonic Greek), and hence require less
context-switching to use for people accustomed to modern and popular Greek
keyboards.

2) Input of combining character sequences possible—While the existing input
methods allow for the input of bare letters and precomposed
letter+diacritics, but not for Unicode letter+diacritic sequences that are
not represented by precomposed characters. For example, the sequence
<alpha>+<combining macron>+<combining acute accent> is not represented by
any precomposed character, but appears frequently in critical editions of
classics. greek-polytonic.el allows for the input of combining characters
themselves, and substitutes such sequences with their Unicode-canonical
precomposed equivalents if they exist; hence input from this method
satisfies Unicode-NFC (Normalization Form Canonical Composition), while
allowing input of sequences that have no corresponding precomposed
character. Though it is to be admitted that font support and Emacs's
display support for such decomposed sequences is still rudimentary and the
sequence may visually appear funky.

While I consider this package functionally complete, there are several
avenues for further work when I have time and if there is interest:
—Allow "prefix" input of diacritics à la most other input methods.
(currently only "postfix" diacritic input is supported)
—Allow input of greek numeral modifiers, of archaic letters, and of greek
"symbols".
—Allow input of non-combining versions of diacritics.

Thanks for your attention and hard work.

Bests,
Johannes Choo
-- 
Johannes Choo
B. Comp student at National University of Singapore
NUSHackers Coreteam

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