On 15 Jul 2011, at 09:47, Andrew West wrote: > I am agnostic on all the symbols, but would say a definite No to encoding > graphic clones of all the format (gc=Cf), space (gc=Zs) and separator > (gc=Zl|Zp) characters shown on pages 3, 8 and 9 of that > document. It is not necessary, and would set a bad precedent for always > encoding all format and space characters in duplicate, once as a visible > character and once as an invisible character.
I disagree. The standard already has http://www.unicode.org/charts/PDF/U2400.pdf which is little different. > If you want a font to display a visible glyph for a format or space character > then you should just map the glyph to its character in the font, as many > fonts already do for certain format characters. Sometimes I might want to show a dotted box for NBSP and sometimes a real NBSP. Or many other characters. Or show a RTL and LTR override character without actually overriding the text. You'd need a picture for that, because just putting in a glyph for it would also override the text. Michael Everson * http://www.evertype.com/
