Yukihiro "Matz" Matsumoto fe17d66363 mruby-string-ext: reject surrogates and ill-formed UTF-8 ...

Make `Integer#chr("UTF-8")` reject UTF-16 surrogate code points
(U+D800..U+DFFF), and make `String#ord` reject ill-formed UTF-8 byte
sequences (overlong encodings, surrogates encoded as UTF-8, and code
points above U+10FFFF), matching CRuby and RFC 3629.

The `utf8code()` helper now decodes the code point first and then
validates the range per byte length:
  len=2: cp >= 0x80                 (rejects overlong)
  len=3: cp >= 0x800 and not D800..DFFF
  len=4: 0x10000 <= cp <= 0x10FFFF

close #2708

Co-authored-by: Claude <noreply@anthropic.com>

2026-05-11 07:48:23 +09:00

..

numeric.rb

mruby-string-ext: reject surrogates and ill-formed UTF-8

2026-05-11 07:48:23 +09:00

range.rb

Add Range#max and Range#min tests from Ruby Spec

2019-07-09 01:41:10 -07:00

string.rb

mruby-string-ext: reject surrogates and ill-formed UTF-8

2026-05-11 07:48:23 +09:00