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From: mf <massifr@fastwebnet.it>
To: Mailing list ConTeXt <ntg-context@ntg.nl>
Subject: Re: modifying kerning breaks opentype ligatures (and other features)
Date: Mon, 10 Dec 2018 16:57:45 +0100	[thread overview]
Message-ID: <504777f1-c166-5747-c191-3066e1a67e4e@fastwebnet.it> (raw)
In-Reply-To: <882fa714-9a05-77d2-e373-70997aabc567@fastwebnet.it>

An example of local correction, but it's not automatic:

\definecharacterkerning[narrow][factor=-.02]
\definecharacterkerning[wide][factor=.02]

\definefontfeature[frac][frac=yes]

\def\Narrow#1{\bgroup\setcharacterkerning[narrow]#1\egroup}
\def\Wide#1{\bgroup\setcharacterkerning[wide]#1\egroup}
\def\NoKerning#1{\bgroup\resetcharacterkerning #1\egroup}

\starttext

\feature[+][frac]%
Some ligatures: float, finance, affine; a fraction: 1/4.

\blank

Modified kerning:

\Narrow{Some ligatures: float, finance, affine; a fraction: 1/4.}

\Wide{Some ligatures: float, finance, affine; a fraction: 1/4.}

\blank

Same as above, but locally corrected:

\Narrow{Some ligatures: \NoKerning{fl}oat, \NoKerning{fi}nance, 
a\NoKerning{ffi}ne; a fraction: \NoKerning{1/4}.}

\Wide{Some ligatures: \NoKerning{fl}oat, \NoKerning{fi}nance, 
a\NoKerning{ffi}ne; a fraction: \NoKerning{1/4}.}

\stoptext


PS: (errata corrige)

> 
> "1", "/", "4" => "¼" glyph (with "frac" feature switched on)
> 

"1", "/", "4" => "smaller 1" glyph moved up, fraction line glyph, 
"smaller 4" glyph moved left and down
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  reply	other threads:[~2018-12-10 15:57 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-12-10 15:26 mf
2018-12-10 15:57 ` mf [this message]
2018-12-10 16:14 ` Hans Hagen
2018-12-10 17:16   ` mf
2018-12-10 18:33     ` Hans Hagen
2018-12-11 10:34     ` mf
2018-12-11 12:06       ` Hans Hagen
2018-12-11 12:45         ` mf
2018-12-11 13:52           ` Hans Hagen
2018-12-11 20:54         ` Rik Kabel
2018-12-12  0:00           ` Rik Kabel

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