/guava/guava/src/com/google/common/base/Ascii.java
return false;
return true;
int alphaIndex = getAlphaIndex(c1); if (alphaIndex < 26 && alphaIndex == getAlphaIndex(c2)) { continue; } return false; } <extra_id_0> } private static int getAlphaIndex(char c) { return (char) ((c | CASE_MASK) - 'a'); } }