Le vendredi 14 juillet 2006 à 13:02 -0400, Tony Nelson a écrit : > At 4:05 PM +0200 7/14/06, Nicolas Mailhot wrote: > > >The slash is there to distinguish between O and 0 in the monospace font. > >It's an explicit requirement for a font which may be used in terminals, > >software IDEs and other technical contexts. > > oOØ0ø > > OK, which are which? As the small attached shot DejaVu Mono perfectly distinguishes between your variations (as Vera did BTW) > It's well known already that slash does not distinguish between Oh and > Zero, because of the Slashed Oh (U+00D8 LATIN CAPITAL LETTER O WITH STROKE) > used in Europe. Which is why Vera uses a dot > >In non-monospace families it's possible to get without it, since O is > >then wider than 0. In monospace it's the only possible choice. > > It's not the only possible choice. My hack has been to put a dot in the > upper-right of a Zero. And how well does this play with 0xAE and others O-with-diatrics glyphs? (ignoring for a while computer convention has long been to disambiguate 0 by putting something in its middle) > Keep on trying. If a Zero looks like an Oh, at least people know to watch > out, but if it looks like a Slashed Oh or Eight, then they're just going to > be misled. It does not look one bit like an 8 on my screen so I suspect bad configuration on the user side, no knowledge of usual 0 presentation in technical fonts, too little time spent with DejaVu Mono to train its eyes, or some mix of all these causes. The basic latin part of Vera Sans Mono (which DejaVu Sans Mono) inherits has been audited to death by all the Gnome, Xorg and Freedesktop developers precisely to disambiguate 0O, lI1 and other combos font usually do bad (precisely because most hackers use a mono variant as their primary font). Nothing is perfect, so it can certainly be perfected, but its current level is pretty good. -- Nicolas Mailhot
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