Traits from filename

script.js

var img = org.getImageName(),           // "st_m_wing_allLimb_a5_flair_noHorn_noRostral_bogbreath.png"

    imgArr = img.split("_"),            // ["st", "m", "wing", "allLimb", "a5", "flair", "noHorn", "noRostral", "bogbreath.png"]

    traitCodes = {
      st: "Steel",
      co: "Copper",
      ar: "Silver",
      go: "Gold",
      ch: "Charcoal",
      ea: "Lava",
      du: "Ash",
      sa: "Sand",
      wing: "Wings",
      noWing: "No wings",
      a5: "Five armor",
      a3: "Three armor",
      a1: "One armor",
      a0: "No armor",
      flair: "Long tail",
      kink: "Kinked tail",
      short: "Short tail",
      horn: "Horns",
      noHorn: "No horns",
      rostral: "Nose spike",
      noRostral: "No nose spike",
      "bogbreath.png": "Bog breath",
      "healthy.png": "Healthy"
    },

    traits = imgArr.map(function(code) {
      if (traitCodes[code])
        return traitCodes[code];
      else return code;
    });

    // => ["Steel", "m", "Wings", "allLimb", "Five armor", "Long tail", "No horns", "No nose spike", "Bog breath"]

  traits.remove(1);       // remove "m" or "f"

  // change the single-value version of the limbs trait into two separate traits
  // for forelimbs and hindlimbs
  var forelimbTrait = "No forelimbs",
      hindlimbTrait = "No hindlimbs";

  if (traits[2] == "forelimbs") {
    forelimbTrait = "Forelimbs";
  } else if (traits[2] == "hindlimbs") {
    hindlimbTrait = "Hindlimbs";
  } else if (traits[2] == "allLimb") {
    forelimbTrait = "Forelimbs";
    hindlimbTrait = "Hindlimbs";
  }

  traits.splice(2, 1 forelimbTrait, hindlimbTrait);

  console.log(traits);