On Mon, Jun 8, 2015 at 12:58 AM, <random...@fastmail.us> wrote:
> On Sun, Jun 7, 2015, at 07:42, Steven D'Aprano wrote:
>> The question of graphemes (what "ordinary people" consider letters and
>> characters, e.g. "ch" is two letters to an English speaker but one letter
>> to a Czech speaker) should be left to libraries.
>
> Do Czech speakers expect to be able to select and delete it as a single
> unit and never have the cursor in the middle of it? If not, then this is
> not really fundamentally the same thing as what we have with combining
> characters or certain sequences of Indic letters.
Not sure about Indic letters, but with combining characters, you *should*
select and delete a single unit containing a base character and all its
combining characters, and you should never have the cursor in the middle of
it. (Not everything gets this right; SciTE, though otherwise a decent text
editor, does allow the cursor to go inside combining characters.) But I
suspect that with the Czech "ch", like the Dutch "ij" and the German "oe"
(when it's not ö), should be treated as two separate characters.
Digression: English has seventy phonograms, which are what words are really
built out of. Digraphs like "th" and "sh", represent single sounds despite
being spelled with multiple letters - but nobody ever expects them to be
treated as single character units just because other languages spell them
"þ" or "ş". The alphabet of English includes "q", which is not a phonogram
on its own ("qu" is), and doesn't include all the digraphs, and any
character-based representation of English should correspondingly work with
letters, not phonograms.
I don't know Czech enough to be able to say whether "ch" is more like a
single letter or a phonogram, but even if it basically functions as a
letter, I suspect that treating it as two characters will be no surprise to
most people.
ChrisA
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