String#downcase :fold.
* enc/unicode.c: Fixed a range error (lowest non-ASCII character affected
by case operations is U+00B5, MICRO SIGN)
* test/ruby/enc/test_case_mapping.rb: Explicit test for case folding of
MICRO SIGN to Greek mu.
(with Kimihito Matsui)
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@53749 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
primitives (mbc_case_fold, get_case_fold_codes_by_str,
apply_all_case_fold) in the various encodings. Currently only known
good encodings are tested to avoid test failures. For bug hunting,
start by adding more encodings with
generate_test_casefold encoding
(with Kimihito Matsui)
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@53748 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
