Comment 2 for bug 521163

Results of running firefox with FC_DEBUG=1. Interesting part (I think):

Sort Pattern has 16 elts (size 32)
        family: "Bitstream Vera Sans"(w) "DejaVu Sans"(w) "WenQuanYi Zen Hei"(w) "DejaVu Sans"(w) "Nimbus Sans L"(w) "AR PL UMing HK"(w) "AR PL UMing CN"(w) "Waree"(w) "Loma"(w) "Garuda"(w) "Umpush"(w) "Norasi"(w) "Mukti Narrow"(w) "VL Gothic"(w) "Sazanami Gothic"(w) "UnDotum"(w) "Lohit Gujarati"(w) "Lohit Hindi"(w) "Lohit Punjabi"(w) "Lohit Tamil"(w) "FreeSans"(w) "Umpush"(w)
        slant: 0(i)(s)
        weight: 80(i)(s)
        width: 100(i)(s)
        pixelsize: 13.3333(f)(s)
        antialias: FcTrue(s)
        hintstyle: 1(i)(s)
        hinting: FcTrue(s)
        verticallayout: FcFalse(s)
        autohint: FcFalse(s)
        globaladvance: FcTrue(s)
        rgba: 1(i)(s)
        lang: "ja"(s)
        fontversion: 2147483647(i)(s)
        embeddedbitmap: FcTrue(s)
        decorative: FcFalse(s)

First font Pattern has 20 elts (size 20)
        family: "文泉驛正黑"(w) "WenQuanYi Zen Hei"(w) "文泉驿正黑"(w)
        familylang: "zh-tw"(w) "en"(w) "zh-cn"(w)
        style: "中等"(w) "Medium"(w)
        stylelang: "zh-tw"(w) "en"(w)
        fullname: "文泉驛正黑"(w) "WenQuanYi Zen Hei"(w) "文泉驿正黑"(w)
        fullnamelang: "zh-tw"(w) "en"(w) "zh-cn"(w)
[etc]