On 26/01/14 19:23, Graham Samuel wrote:
The first 255 characters on Unicode will occupy double the number of bytes as
the first 255 characters of ascii: this means that a transformation has to take
place, however trivial (the extra byte in each case is perhaps all zeros - I
have not looked at this yet). This is what I call 'promoting' - it transforms a
mean and restrictive encoding to a generous and universal one. 'Promotion'
seems to me a good word for this transformation. Or one could of course stick
to the word 'transformation'.
If you're saying that ascii can become Unicode without any manipulation at all,
then I see that I don't understand the basic format of Unicode, which I thought
was basically 16 bits (2 bytes) per character. Maybe I am being fooled by my
history as a binary bit-twiddler whose experience pre-dates even the word
'byte'. Octal, anyone?
G
On 26 Jan 2014, at 17:23, Richmond <[email protected]> wrote:
I don't know what you mean by "'promoting' non-Unicode character strings to
Unicode; that sounds a bit odd: as far as I know the ASCII
set is subsumed as the first 255 chars on Unicode so that is neither here nor
there.
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I'm not sure that ALL Unicode chars are double-byte ones; possibly the
first 255 are not.
And, to be honest, I'm not sure where to check.
Richmond.
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