public static boolean isHashBangLine(CharSequence firstCharsIfText, String marker) {
if (firstCharsIfText == null) {
return false;
}
final int lineBreak = StringUtil.indexOf(firstCharsIfText, '\n');
if (lineBreak < 0) {
return false;
}
String firstLine = firstCharsIfText.subSequence(0, lineBreak).toString();
if (!firstLine.startsWith("#!")) {
return false;
}
return firstLine.contains(marker);
}
