return null;
}
// figure out mode, and delimiters
String delimModeStr = ctx.getValue("delimMode");
DelimMode delimMode = DelimMode.EXCLUDE; // default to exclude mode
if (delimModeStr != null) {
if ("exclude".equals(delimModeStr)) {
delimMode = DelimMode.EXCLUDE;
} else if ("prev".equals(delimModeStr)) {
delimMode = DelimMode.INCLUDE_PREV;