Minor Description
In the JavaDoc of StringUtils.abbreviate(final String str, final String abbrevMarker, final int maxWidth) is written, that the method in no case will return a String of length greater than maxWidth. This doesn't hold, if abbrevMarker is an empty string.
Expected behaviour:
abbreviate("much too long text", "", 13).equals("much too long")
Actual behaviour:
abbreviate("much too long text", "", 13).equals("much too long text")