Re: U+007E and U+02DC

From: Kenneth Whistler (kenw@sybase.com)
Date: Tue Jun 12 2001 - 20:44:46 EDT


Patrick Andries asked:

> The Unicode Standard 3.0 (page 149) says that U+007E can be used as a
> Spacing Clone of Combining Tilde. But isn't it this the function of U+02DC
> (the so called "SMALL TILDE") ? Why suggest this usage then and not point to
> U+02DC ?
>
> Could one say (as some typographers see it) that U+007E should form a kind
> of logical pair with the dash (same position, same width, similar function
> (see dictionaries)) ?

Just as for his fellow ASCII gang members, Hyphus the Weasel, A. Postroquote
(aka "Little Stinky"), and Astar Ix, "Big Jim" Tilde (aka "The Swung Dasher")
is so compromised by his questionable past that no one is sure when he
might turn up in any particular context or just what to make of him when
he does.

While U+02DC is clearly intended for a spacing version of the combining
tilde, this has to be counterbalanced by the legacy practice which has
treated any of the spacing accents in ASCII or Latin-1 as the counterparts
of the respective combining marks for accents.

Note, to make things worse, that U+007E could also be considered a spacing
version of U+0334 COMBINING TILDE OVERLAY.

--Ken

>
> P. Andries
> Saint-Hubert (Québec)



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