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Re: [Scheme-reports] mutable unicode strings

On Wed, 2014-07-02 at 08:04 -0700, Per Bothner wrote:

> In other words: Supporting string-replace! has no extra overheads beyond
> requiring an "indirect" representation.  The latter is forced anyway if
> you support mutability and full Unicode, unless you use 3- or 4-byte characters.
> Even if you do use 3- or 4-byte characters, indirection is worth it, because
> mutable fixed-size strings is an essentially-useless feature.

Are there any extant examples of 3-byte code units in strings?  
I would find that - interesting.


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