precomposed polytonic Greek characters with macrons and other diacritics

James Tauber jtauber at
Mon Feb 8 17:59:10 CST 2016

On Mon, Feb 8, 2016 at 1:29 PM, Elizabeth Mattijsen <liz at> wrote:

> > On 08 Feb 2016, at 20:10, Markus Scherer < at> wrote:
> >
> > On Mon, Feb 8, 2016 at 10:47 AM, James Tauber <jtauber at>
> wrote:
> > Even with all this, though, my own work includes accentuation and
> syllabification algorithms, all of which are made more cumbersome by the
> lack of precomposed characters indicating vowel length. I'm currently
> leaning towards adding a layer of "character" processing on top of Python
> 3's otherwise decent support that effectively treats the relevant character
> sequences as single characters even if they aren't (and can't be
> precomposed).
> >
> > I suggest you normalize the text (NFC or NFD), and then look for
> "grapheme clusters".
> >
> > In C++ and Java, you could use an ICU BreakIterator for the latter.
> Might I suggest looking at Rakudo Perl 6’s implementation of NFG
> (Normalization Form Grapheme) which will generate synthetic codepoints on
> the fly under the hood.
> For an introduction, see

Thanks very much, I'll look into this.

Having done a Python implementation of the UCA, I'm quite looking forward
to doing more Unicode tools for Python.

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