[XeTeX] Ligatures no tproberly rendered in Gillius ADF Condensed

[Pander]

On 2010-12-04 00:17, Joachim Trinkwitz wrote:
> Am 03.12.2010 um 16:30 schrieb Pander:
> 
>> Another small font issue with XeLaTeX. The following
>>
>> \documentclass{article}
>> \usepackage{xltxtra}
>> \begin{document}
>> \fontspec{GilliusADF-Cond}\itshape
>> \addfontfeatures{Ligatures={Required,Common,Rare}}AE~OE~ae~ff~ffi~ffl~fi~fl~oe~st
>> \end{document}
>>
>> works fine in LuaLaTeX, but in XeLaTeX the ligatures ff, ffi and ffl are
>> not shown.
> 
> I don't know from where LuaLaTeX takes those ligatures, but looking at the font (fresh installation from http://arkandis.tuxfamily.org/adffonts.html), I have to observe that the roman variant has 265 glyphs, the italic one only 260. Among those missing in the latter are just the ligatures fl, ffi, and ffl. So this is definitely not XeTeX's fault.
> 
> Joachim
> 

Output of ttx provides more ligatures. I use ttx's output for my font
catalogue and for all other fonts, this info on ligatures is correct.

      <Lookup index="9">
        <LookupType value="4"/>
        <LookupFlag value="0"/>
        <!-- SubTableCount=1 -->
        <LigatureSubst index="0" Format="1">
          <LigatureSet glyph="zero">
            <Ligature components="slash,zero,zero" glyph="perthousand"/>
            <Ligature components="fraction,zero,zero" glyph="perthousand"/>
          </LigatureSet>
        </LigatureSubst>
      </Lookup>
      <Lookup index="10">
        <LookupType value="4"/>
        <LookupFlag value="0"/>
        <!-- SubTableCount=1 -->
        <LigatureSubst index="0" Format="1">
          <LigatureSet glyph="zero">
            <Ligature components="slash,zero" glyph="percent"/>
            <Ligature components="fraction,zero" glyph="percent"/>
          </LigatureSet>
        </LigatureSubst>
      </Lookup>
      <Lookup index="11">
        <LookupType value="4"/>
        <LookupFlag value="0"/>
        <!-- SubTableCount=1 -->
        <LigatureSubst index="0" Format="1">
          <LigatureSet glyph="one">
            <Ligature components="slash,four" glyph="onequarter"/>
            <Ligature components="fraction,four" glyph="onequarter"/>
          </LigatureSet>
        </LigatureSubst>
      </Lookup>
      <Lookup index="12">
        <LookupType value="4"/>
        <LookupFlag value="0"/>
        <!-- SubTableCount=1 -->
        <LigatureSubst index="0" Format="1">
          <LigatureSet glyph="one">
            <Ligature components="slash,two" glyph="onehalf"/>
            <Ligature components="fraction,two" glyph="onehalf"/>
          </LigatureSet>
        </LigatureSubst>
      </Lookup>
      <Lookup index="13">
        <LookupType value="4"/>
        <LookupFlag value="0"/>
        <!-- SubTableCount=1 -->
        <LigatureSubst index="0" Format="1">
          <LigatureSet glyph="three">
            <Ligature components="slash,four" glyph="threequarters"/>
            <Ligature components="fraction,four" glyph="threequarters"/>
          </LigatureSet>
        </LigatureSubst>
      </Lookup>
      <Lookup index="14">
        <LookupType value="4"/>
        <LookupFlag value="0"/>
        <!-- SubTableCount=1 -->
        <LigatureSubst index="0" Format="1">
          <LigatureSet glyph="f">
            <Ligature components="f,i" glyph="f_f_i"/>
            <Ligature components="i" glyph="f_i"/>
          </LigatureSet>
        </LigatureSubst>
      </Lookup>
      <Lookup index="15">
        <LookupType value="4"/>
        <LookupFlag value="0"/>
        <!-- SubTableCount=1 -->
        <LigatureSubst index="0" Format="1">
          <LigatureSet glyph="f">
            <Ligature components="f,l" glyph="f_f_l"/>
            <Ligature components="f" glyph="f_f"/>
            <Ligature components="l" glyph="f_l"/>
          </LigatureSet>
        </LigatureSubst>
      </Lookup>
      <Lookup index="16">
        <LookupType value="4"/>
        <LookupFlag value="0"/>
        <!-- SubTableCount=1 -->
        <LigatureSubst index="0" Format="1">
          <LigatureSet glyph="s">
            <Ligature components="t" glyph="s_t"/>
          </LigatureSet>
        </LigatureSubst>
      </Lookup>
      <Lookup index="17">
        <LookupType value="1"/>
        <LookupFlag value="0"/>
        <!-- SubTableCount=1 -->
        <SingleSubst index="0" Format="1">
          <Substitution in="s" out="longs"/>
        </SingleSubst>
      </Lookup>
      <Lookup index="18">
        <LookupType value="4"/>
        <LookupFlag value="0"/>
        <!-- SubTableCount=1 -->
        <LigatureSubst index="0" Format="1">
          <LigatureSet glyph="longs">
            <Ligature components="t" glyph="longs_t"/>
          </LigatureSet>
        </LigatureSubst>
      </Lookup>
      <Lookup index="19">
        <LookupType value="4"/>
        <LookupFlag value="0"/>
        <!-- SubTableCount=1 -->
        <LigatureSubst index="0" Format="1">
          <LigatureSet glyph="A">
            <Ligature components="E" glyph="AE"/>
            <Ligature components="e" glyph="AE"/>
          </LigatureSet>
          <LigatureSet glyph="O">
            <Ligature components="E" glyph="OE"/>
            <Ligature components="e" glyph="OE"/>
          </LigatureSet>
          <LigatureSet glyph="a">
            <Ligature components="e" glyph="ae"/>
          </LigatureSet>
          <LigatureSet glyph="o">
            <Ligature components="e" glyph="oe"/>
          </LigatureSet>
        </LigatureSubst>
      </Lookup>