in src/main/java/org/apache/maven/shared/utils/StringUtils.java [1212:1228]
public static String stripEnd(String str, @Nullable String strip) {
if (str == null) {
return null;
}
int end = str.length();
if (strip == null) {
while ((end != 0) && Character.isWhitespace(str.charAt(end - 1))) {
end--;
}
} else {
while ((end != 0) && (strip.indexOf(str.charAt(end - 1)) != -1)) {
end--;
}
}
return str.substring(0, end);
}