[XeTeX] Adobe Kepler Std: Extraneous space always inserted between left paren and f

Taylor Venable taylor at metasyntax.net
Sat Feb 20 23:29:25 CET 2010

On Thu, 2010-02-04 at 18:52 -0500, Taylor Venable wrote:
> Hi, I am having an interesting problem when setting "(f" using XeTeX and
> the Adobe Kepler Std fonts: in the resultant PDF, there is a space in
> the middle, such that the output looks like "( f" instead.  I have
> placed an example of the output on my website, showing several times
> when the problem occurs:
> http://metasyntax.net/kepler.pdf
> In a PDF reader that allows character-wise selection (e.g. Evince) you
> can select the space between the parenthesis and the f.  Here is the
> source of that PDF above, which I compiled simply with "xetex <file>":
> \font\kepler="Kepler Std:+liga" \kepler Regular, Ligatures: (f) (fi)\par
> \font\kepler="Kepler Std:-liga" \kepler Regular, No Ligatures: (f) (fi)\par
> \font\kepler="Kepler Std Bold:+liga" \kepler Regular Bold, Ligatures: (f) (fi)\par
> \font\kepler="Kepler Std Bold:-liga" \kepler Regular Bold, No Ligatures: (f) (fi)\par
> \font\kepler="Kepler Std Italic:+liga" \kepler Regular Italic, Ligatures: (f) (fi)\par
> \font\kepler="Kepler Std Italic:-liga" \kepler Regular Italic, No Ligatures: (f) (fi)\par
> \font\kepler="Kepler Std:+smcp" \kepler Regular Small Caps: (f) (fi)\par
> \font\kepler="Kepler Std Caption:+liga" \kepler Caption: (f) (fi)\par
> \font\kepler="Kepler Std Subhead:+liga" \kepler Subhead: (f) (fi)\par
> \font\kepler="Kepler Std Display:+liga" \kepler Display: (f) (fi)\par
> \end
> All instances of "(f" show up in the output as "( f" with the exception
> of the small capitals.  With the fi ligature, there is a visible space
> equivalent in size to that before the standalone f, but the space isn't
> selectable in Evince like it is before standalone f.

I don't mean to be too much of a pest by bumping this, but if anybody
has any ideas on how to investigate this further, I'd really appreciate
it.  It's unfortunate to lose the use of these fonts.

Taylor Venable

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