Asmus Freytag scripsit:Surely Variation Selectors are "default ignorable" characters, which implies that if a process (including collation?) doesn't know what to do with them they should be ignored, i.e. treated as not present rather than as undefined characters. It is that behaviour which makes them so useful for the purposes I had in mind.
This can be tricky esp,. when the user doesn't know a VS is present
and the font used to view the data doesn't have an alternate glyph.
Well, surely it'll turn into the black blob, or the reversed question mark, or whatever. It won't just vanish, except in a font which explicitly makes it vanish, and such a font ought to have the mandatory ligatures too.
Should comparison, by default, ignore VS?
No, I think not. Of course proper collation is a different matter. What does the collation standard say to do with unassigned codepoints anyhow?
The last question above is irrelevant as these are not unassigned code points.
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