Optical size font and different families font

Question

I read some post about xelatex and optical size fonts, but generally the codex is as follows:

\usepackage{fontspec}
\defaultfontfeatures{Contextuals=NoAlternate}
\setmainfont[Ligatures=TeX,
Numbers=OldStyle,
Scale=1.1,
SizeFeatures={%
 {Size={-8.4},Font=* Caption},
 {Size={8.41-13.0},Font=*},
 {Size={13.01-19.9},Font=* Subhead},
 {Size={19.91-},Font=* Display}
 }]{Garamond Premier Pro}

However, I've got a font (ATF Garamond), whose weights belong to different families:

• Garamond ATF Micro (Regular, Rgular Italic, Bold, ... )

• Garamond ATF Text (Regular, Rgular Italic, Bold, ... )

• Garamond ATF Subhead (Regular, Rgular Italic, Bold, ... )

so I cannot use as in the last line of my example

 }]{Garamond Premier Pro}

I tried

\setmainfont[%
  UprightFont=*,
  ItalicFont=* Italic,
  BoldFont=* Bold,
  BoldItalicFont=* Bold Italic,
  Ligatures=TeX,
  Contextuals=NoAlternate,
  Numbers=OldStyle,
  SizeFeatures={%
        {Size={-8.4},Font=* Micro},
        {Size={8.41-13.0},Font=* Text},
       {Size={13.01-19.9},Font=* Subhead}
        },
  Extension=.otf,
  Path= /usr/local/share/fonts/opentype/ATFGaramond/
]{Garamond ATF *}

but it produces an error:

Invalid filename `[/usr/local/share/fonts/opentype/ATFGaramond/Garamond ATF *.otf]/OT', contains '['

! Package fontspec Error: The font "Garamond ATF *" cannot be found.

For immediate help type H <return>.
 ...                                              

l.92 

How is possible to suggest to XeLatex to use correctly the whole families?

thanx

Answer 1

I had to change with FontForge all font family name from GaramondATF Text, GaramondATF Subhead etc to GaramondATF to create an unique family. Now I can use correctly XeLaTeX