/guava/guava/src/com/google/common/base/CharMatcher.java
checkPositionIndex( start) ;
checkPositionIndex ( start, length ) ;
} public int indexIn(CharSequence sequence) { return indexIn(sequence, 0); } public int indexIn(CharSequence sequence, int start) { int length = sequence.length(); <extra_id_0> for (int i = start; i < length; i++) { if (matches(sequence.charAt(i))) { return i; } } return -1;