Corrigendum #9

[Markus Scherer]

On Sun, Jun 1, 2014 at 7:49 AM, Karl Williamson <public at khwilliamson.com>
wrote:

> Thanks, I had not thought about that.  I'm thinking wording something like
> this is more appropriate
>
> "Noncharacters may be openly interchanged, but it is inadvisable to do so
> without prior agreement, since at each stage any of them might be replaced
> by a REPLACEMENT CHARACTER or otherwise disposed of, at the sole discretion
> of that stage's implementation."


I think that would invite again the kinds of implementations that triggered
Corrigendum #9, where you couldn't use CLDR files with Gnome-based tools
(plain text editors, file diff tools, command-line terminal) if the files
contained noncharacters. (CLDR data uses them for boundary mappings in
collation data.)

markus
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