Available fontconfig .conf files (* is enabled):
  [1]   10-autohint.conf
  [2]   10-hinting-full.conf
  [3]   10-hinting-medium.conf
  [4]   10-hinting-none.conf
  [5]   10-hinting-slight.conf *
  [6]   10-no-sub-pixel.conf
  [7]   10-scale-bitmap-fonts.conf *
  [8]   10-sub-pixel-bgr.conf *
  [9]   10-sub-pixel-rgb.conf
  [10]  10-sub-pixel-vbgr.conf
  [11]  10-sub-pixel-vrgb.conf
  [12]  10-unhinted.conf
  [13]  11-lcdfilter-default.conf *
  [14]  11-lcdfilter-legacy.conf
  [15]  11-lcdfilter-light.conf
  [16]  20-unhint-small-dejavu-sans-mono.conf
  [17]  20-unhint-small-dejavu-sans.conf
  [18]  20-unhint-small-dejavu-serif.conf
  [19]  20-unhint-small-vera.conf *
  [20]  25-unhint-nonlatin.conf
  [21]  30-metric-aliases.conf *
  [22]  40-nonlatin.conf *
  [23]  42-luxi-mono.conf *
  [24]  45-generic.conf *
  [25]  45-latin.conf *
  [26]  49-sansserif.conf *
  [27]  50-user.conf *
  [28]  51-local.conf *
  [29]  52-infinality.conf *
  [30]  57-dejavu-sans-mono.conf
  [31]  57-dejavu-sans.conf
  [32]  57-dejavu-serif.conf
  [33]  60-generic.conf *
  [34]  60-latin.conf *
  [35]  60-liberation.conf
  [36]  62-croscore-arimo.conf
  [37]  62-croscore-cousine.conf
  [38]  62-croscore-symbolneu.conf
  [39]  62-croscore-tinos.conf
  [40]  65-fonts-persian.conf *
  [41]  65-khmer.conf
  [42]  65-nonlatin.conf *
  [43]  69-unifont.conf *
  [44]  70-no-bitmaps.conf
  [45]  70-yes-bitmaps.conf
  [46]  75-yes-terminus.conf
  [47]  80-delicious.conf *
  [48]  90-synthetic.conf *