From: John H. Jenkins (firstname.lastname@example.org)
Date: Wed Mar 18 2009 - 20:39:38 CST
Mac OS X uses font fallbacks (unless the program specifically tells it
not to), so if you have *any* font that covers a particular character,
you'll see something. I saw Last Resort glyphs, so no font (other
than the Last Resort font, which covers everything) I have installed
covers that particular character. In this particular case, I'm pretty
much limited to the standard fonts that ship with Mac OS X and Apple
And I don't mean that you installed the font incorrectly. I mean that
an installed font is doing something it shouldn't (IMHO) do.
On Mar 18, 2009, at 8:17 PM, Chris Weber wrote:
> I've looked on three systems, two Mac's - one is a colleagues, and
> one is my
> wife's which I don't do any funky stuff on. And on my Windows
> system, I
> looked at these in 'all' available fonts I have. Most of the fonts
> installed showed empty whitespace, including Arial Unicode MS,
> Courier New,
> Lucida Sans Unicode, and Everson Mono. Some fonts, not many, showed
> Do you know which font you used and could you try a few more on
> Mac? How
> does system and application configuration determine which font
> displays a
> character when many fonts are capable?
> When you say you think I have a font installed incorrectly on these
> systems, do you mean the font is the problem or the way it's
> installed is
> the problem?
> -----Original Message-----
> From: email@example.com [mailto:firstname.lastname@example.org]
> Behalf Of John H. Jenkins
> Sent: Wednesday, March 18, 2009 3:54 PM
> To: Unicode List
> Subject: Re: Attack vectors through Unassigned Code Points in IDN
> On Mar 18, 2009, at 4:23 PM, Chris Weber wrote:
>> My question is - why would these code point ranges U+115A..U+1160
>> and U+11A3..U+11A7 render as white space in Mac and Windows? This
>> isn't just a product of Firefox, which I agree handles this poorly.
>> In any application (e.g. notepad) they show as white space. I
>> would expect them to map to a box or other no-glyph-exists fallback.
> On my Mac they are not white space. It looks like you have a font
> installed that (incorrectly IMHO) uses a blank glyph to display them.
> John H. Jenkins
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