[XeTeX] List of ligatures in a font

Jonathan Kew jfkthame at googlemail.com
Wed Mar 14 22:08:27 CET 2012

On 14 Mar 2012, at 17:57, Heiko Oberdiek wrote:

> On Wed, Mar 14, 2012 at 07:43:45PM +0200, Tobias Schoel wrote:
>> Could one test if ff and f\/f are equal with tex-primitives?
> If the width of the single characters differ to the ligture,
> then you can put both versions in boxes and compare the widths.

Rather than a ligature, there might be a kerning pair. Or a contextual alternate of one (or both) of the characters.

You can't reliably identify the presence of ligatures by detecting differences in box widths.


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