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

[Taylor Venable]

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
http://metasyntax.net/