/*
 *  call-seq:
 *     AsciiLetterAnalyzer.new(lower = true) -> analyzer
 *
 *  Create a new AsciiWhiteSpaceAnalyzer which downcases tokens by default
 *  but can optionally leave case as is. Lowercasing will only be done to
 *  ASCII characters.
 *
 *  lower:: set to false if you don't want the field's tokens to be downcased
 */
static VALUE
frt_a_letter_analyzer_init(int argc, VALUE *argv, VALUE self)
{
    Analyzer *a;
    GET_LOWER(true);
    a = letter_analyzer_new(lower);
    Frt_Wrap_Struct(self, NULL, &frt_analyzer_free, a);
    object_add(a, self);
    return self;
}