Re: Support for Windows unicode paths

[David Given <dg@...>]

Alex Queiroz wrote:
[...]
>      This is an interesting point. I and thought I had everything
> figured out for my VM's text handling...

There's some good reading here (which I hadn't found before):

http://www.unicode.org/reports/tr29

It turns out to be possible to programmatically split a Unicode string 
up into its component grapheme clusters (what I was incorrectly 
referring to as glyphs, and what most people think of as characters). 
So, it ought to be fairly simple to do a Lua addon where you can say:

for c in s:graphemes() do
  print(c)
end

...where c is a *string* containing a particular grapheme cluster (which 
might be quite long; the link has an example of a four-code point 
cluster). This would actually allow a string to be broken down into an 
array of grapheme clusters to give true random access, which I'd 
previously thought of as being impossible. It'd be expensive, though... 
possibly it'd be worth doing lazily.

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