- use uppercase hex digits - only emit "U+" notation for valid code points (<= U+10FFFF), zero-padded to a minimum of four digits. rdar://173817553 Assisted-by: claude (cherry picked from commit 0cd942fa1b6de94fd6d7fa7ba73f0233293115f8)
- use uppercase hex digits - only emit "U+" notation for valid code points (<= U+10FFFF), zero-padded to a minimum of four digits. rdar://173817553 Assisted-by: claude (cherry picked from commit 0cd942fa1b6de94fd6d7fa7ba73f0233293115f8)