Function indenter

static/editor.md/lib/codemirror/mode/erlang/erlang.js:506–547

(state,textAfter)

// indenter

  function indenter(state,textAfter) {
    var t;
    var unit = cmCfg.indentUnit;
    var wordAfter = wordafter(textAfter);
    var currT = peekToken(state,1);
    var prevT = peekToken(state,2);

    if (state.in_string || state.in_atom) {
      return CodeMirror.Pass;
    }else if (!prevT) {
      return 0;
    }else if (currT.token == "when") {
      return currT.column+unit;
    }else if (wordAfter === "when" && prevT.type === "function") {
      return prevT.indent+unit;
    }else if (wordAfter === "(" && currT.token === "fun") {
      return  currT.column+3;
    }else if (wordAfter === "catch" && (t = getToken(state,["try"]))) {
      return t.column;
    }else if (is_member(wordAfter,["end","after","of"])) {
      t = getToken(state,["begin","case","fun","if","receive","try"]);
      return t ? t.column : CodeMirror.Pass;
    }else if (is_member(wordAfter,closeParenWords)) {
      t = getToken(state,openParenWords);
      return t ? t.column : CodeMirror.Pass;
    }else if (is_member(currT.token,[",","|","||"]) ||
              is_member(wordAfter,[",","|","||"])) {
      t = postcommaToken(state);
      return t ? t.column+t.token.length : unit;
    }else if (currT.token == "->") {
      if (is_member(prevT.token, ["receive","case","if","try"])) {
        return prevT.column+unit+unit;
      }else{
        return prevT.column+unit;
      }
    }else if (is_member(currT.token,openParenWords)) {
      return currT.column+currT.token.length;
    }else{
      t = defaultToken(state);
      return truthy(t) ? t.column+unit : 0;
    }
  }

  function wordafter(str) {
    var m = str.match(/,|[a-z]+|\}|\]|\)|>>|\|+|\(/);