[OpenType] [mpeg-OTspec] Vertical ligatures

[Levantovsky, Vladimir]

FYI - forwarding all missing emails to MPEG list

> -----Original Message-----
> From: listmaster at indx.co.uk [mailto:listmaster at indx.co.uk] On Behalf Of
> Ken Lunde
> Sent: Friday, April 27, 2012 9:20 AM
> To: multiple recipients of OpenType
> Subject: Re: [OpenType] [mpeg-OTspec] Vertical ligatures
> 
> Message from OpenType list:
> 
> 
> Suzuki-san,
> 
> One cannot always tell whether the glyphs for Latin characters are
> proportional (encoded at U+00xx) or full-width (encoded at U+FFxx),
> especially in vertical writing mode. But, I can clearly state that I am
> not aware of any Japanese font that includes full-width glyphs for
> Latin ligatures, in the conventional sense of being applied by the
> 'liga' GSUB feature, meaning fi, fl, and so on.
> 
> Regards...
> 
> -- Ken
> 
> On Apr 26, 2012, at 11:26 PM, suzuki toshiya wrote:
> 
> > Message from OpenType list:
> >
> >
> > Excuse me,
> >
> > John Daggett wrote:
> >>> I'd be interested in a realistic case where 'liga' is problematic
> in
> >>> vertical setting. John D's example is unrealistic, because
> >>> proportional Latin is rotated (not stacked) and monospaced Latin
> >>> wouldn't be ligated.
> >
> >> Samples of book spines from a Tokyo bookstore:
> >> http://people.mozilla.org/~jdaggett/images/bookspineexamples.jpg
> >>
> >> AERA article on the iPad:
> >> http://people.mozilla.org/~jdaggett/images/ex7-aera20100607-p26-
> ipad.
> >> png
> >>
> >> Note the title of the Ryu Murakami novel "69" or the use of "Wi-Fi"
> >> in the iPad article, if the book was named "59" instead and the term
> >> "Wifi" used, both these examples with a standard OpenType Japanese
> >> font (e.g. Hiragino or Kozuka families) would exhibit the problem,
> >> the 'fi' ligature would appear since the 'liga' feature is on by
> default.
> >> So this *isn't* pure theoretics.
> >
> > David Lemon distinguished the ligature in proportional Latin and
> monospaced Latin.
> > In John Daggett's pictures, all of the vertically stacked Latin are
> > recognized to be proportional? or monospaced?
> >
> > In my personal recognization, vertically stacked Latin text in
> > vertical Japanese text is something like a mutation in forcibly
> import
> > of Latin text, and the detailed typographic features, the
> > applicability to broader character sets are not considered (I don't
> > know if there is some common sense how to layout U+01C4 - U+01CC,
> > U+02A3 - U+02AD in vertically stacked Latin in Japanese text)
> >
> > Regards,
> > mpsuzuki
> >
> >
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> >
> 
> 
> 
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