Function start

static/js/codemirror/mode/http/http.js:8–18

(stream, state)

  }

  function start(stream, state) {
    if (stream.match(/^HTTP\/\d\.\d/)) {
      state.cur = responseStatusCode;
      return "keyword";
    } else if (stream.match(/^[A-Z]+/) && /[ \t]/.test(stream.peek())) {
      state.cur = requestPath;
      return "keyword";
    } else {
      return failFirstLine(stream, state);
    }
  }

  function responseStatusCode(stream, state) {
    var code = stream.match(/^\d+/);