[lltx] TL2016's luaotfload seemingly unable to access subfonts in either .ttc collections or .dfont suitcases

[Bruno Voisin]

Hello,

Trying the brand new LuaTeX and luaotfload in TeX Live 2016 on the Mac (using mactex-20160417.pkg from tlpretest), and after blacklisting LastResort.ttf as documented in various places, it seems luaotfload-tool cannot analyze properly the various subfonts in .ttc collections or .dfont suitcases, getting for all these subfonts the data for subfont 0.

For example here is what luaotfload-names.lua.gz in TeX Live 2016 (actually ~/Library/texlive/2016/texmf-var/luatex-cache/generic/names/luaotfload-names.lua.gz) contains for Times.dfont

  {
   ["basename"]="Times.dfont",
   ["familyname"]="times",
   ["fontname"]="timesroman",
   ["format"]="dfont",
   ["fullname"]="timesroman",
   ["fullpath"]="/System/Library/Fonts/Times.dfont",
   ["index"]=2020,
   ["italicangle"]=0,
   ["location"]="system",
   ["plainname"]="Times Roman",
   ["psname"]="timesroman",
   ["size"]=false,
   ["splainname"]="timesroman",
   ["splitstyle"]="roman",
   ["subfamily"]="regular",
   ["subfont"]=0,
   ["version"]="10.0d1e3",
   ["weight"]=0,
  },
  {
   ["basename"]="Times.dfont",
   ["conflicts"]={
    ["barename"]=2020,
    ["basename"]=2020,
   },
   ["familyname"]="times",
   ["fontname"]="timesroman",
   ["format"]="dfont",
   ["fullname"]="timesroman",
   ["fullpath"]="/System/Library/Fonts/Times.dfont",
   ["index"]=2021,
   ["italicangle"]=0,
   ["location"]="system",
   ["plainname"]="Times Roman",
   ["psname"]="timesroman",
   ["size"]=false,
   ["splainname"]="timesroman",
   ["splitstyle"]="roman",
   ["subfamily"]="regular",
   ["subfont"]=1,
   ["version"]="10.0d1e3",
   ["weight"]=0,
  },
  {
   ["basename"]="Times.dfont",
   ["conflicts"]={
    ["barename"]=2020,
    ["basename"]=2020,
   },
   ["familyname"]="times",
   ["fontname"]="timesroman",
   ["format"]="dfont",
   ["fullname"]="timesroman",
   ["fullpath"]="/System/Library/Fonts/Times.dfont",
   ["index"]=2022,
   ["italicangle"]=0,
   ["location"]="system",
   ["plainname"]="Times Roman",
   ["psname"]="timesroman",
   ["size"]=false,
   ["splainname"]="timesroman",
   ["splitstyle"]="roman",
   ["subfamily"]="regular",
   ["subfont"]=2,
   ["version"]="10.0d1e3",
   ["weight"]=0,
  },
  {
   ["basename"]="Times.dfont",
   ["conflicts"]={
    ["barename"]=2020,
    ["basename"]=2020,
   },
   ["familyname"]="times",
   ["fontname"]="timesroman",
   ["format"]="dfont",
   ["fullname"]="timesroman",
   ["fullpath"]="/System/Library/Fonts/Times.dfont",
   ["index"]=2023,
   ["italicangle"]=0,
   ["location"]="system",
   ["plainname"]="Times Roman",
   ["psname"]="timesroman",
   ["size"]=false,
   ["splainname"]="timesroman",
   ["splitstyle"]="roman",
   ["subfamily"]="regular",
   ["subfont"]=3,
   ["version"]="10.0d1e3",
   ["weight"]=0,
  },

and here is what it contained for TeX Live 2015

  {
   ["basename"]="Times.dfont",
   ["familyname"]="times",
   ["fontname"]="timesroman",
   ["format"]="dfont",
   ["fullname"]="timesroman",
   ["fullpath"]="/System/Library/Fonts/Times.dfont",
   ["index"]=2012,
   ["italicangle"]=0,
   ["location"]="system",
   ["plainname"]="Times Roman",
   ["psname"]="timesroman",
   ["size"]=false,
   ["splainname"]="timesroman",
   ["splitstyle"]="roman",
   ["subfamily"]="regular",
   ["subfont"]=0,
   ["version"]="10.0d1e3",
   ["weight"]=0,
  },
  {
   ["basename"]="Times.dfont",
   ["conflicts"]={
    ["barename"]=2012,
    ["basename"]=2012,
   },
   ["familyname"]="times",
   ["fontname"]="timesbold",
   ["format"]="dfont",
   ["fullname"]="timesbold",
   ["fullpath"]="/System/Library/Fonts/Times.dfont",
   ["index"]=2013,
   ["italicangle"]=0,
   ["location"]="system",
   ["plainname"]="Times Bold",
   ["psname"]="timesbold",
   ["size"]=false,
   ["splainname"]="timesbold",
   ["splitstyle"]="bold",
   ["subfamily"]="bold",
   ["subfont"]=1,
   ["version"]="10.0d1e3",
   ["weight"]=0,
  },
  {
   ["basename"]="Times.dfont",
   ["conflicts"]={
    ["barename"]=2012,
    ["basename"]=2012,
   },
   ["familyname"]="times",
   ["fontname"]="timesitalic",
   ["format"]="dfont",
   ["fullname"]="timesitalic",
   ["fullpath"]="/System/Library/Fonts/Times.dfont",
   ["index"]=2014,
   ["italicangle"]=-15,
   ["location"]="system",
   ["plainname"]="Times Italic",
   ["psname"]="timesitalic",
   ["size"]=false,
   ["splainname"]="timesitalic",
   ["splitstyle"]="italic",
   ["subfamily"]="italic",
   ["subfont"]=2,
   ["version"]="10.0d1e3",
   ["weight"]=0,
  },
  {
   ["basename"]="Times.dfont",
   ["conflicts"]={
    ["barename"]=2012,
    ["basename"]=2012,
   },
   ["familyname"]="times",
   ["fontname"]="timesbolditalic",
   ["format"]="dfont",
   ["fullname"]="timesbolditalic",
   ["fullpath"]="/System/Library/Fonts/Times.dfont",
   ["index"]=2015,
   ["italicangle"]=-15,
   ["location"]="system",
   ["plainname"]="Times Bold Italic",
   ["psname"]="timesbolditalic",
   ["size"]=false,
   ["splainname"]="timesbolditalic",
   ["splitstyle"]="bolditalic",
   ["subfamily"]="bolditalic",
   ["subfont"]=3,
   ["version"]="10.0d1e3",
   ["weight"]=0,
  },

In case that helps, the above was obtained when typesetting a test file calling and displaying samples for all the built-in fonts of OS X El Capitan (ie 10.11), visible or invisible. The files and output for MacTeX 2015 and 2016 (44 MB zipped) are at

http://servbox.legi.grenoble-inp.fr/file.php?h=Rb28ade446b010a20f1989cd803969e3f

The fonts are loaded directly with the \font primitive in plain LuaTeX (and XeTeX for comparison).

Bruno Voisin
(from the MacTeX technical group)