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  2. 13

    Highlights:

    • YJIT: New experimental in-process JIT compiler
      • disabled by default (needs --yjit cli option), limited to Unix-like x86-64 platforms for now
    • debug gem: A new debugger
    • error_highlight: Fine-grained error location in backtrace
    • IRB Autocomplete and Document Display
    • Values in Hash literals and keyword arguments can be omitted
    • Pin operator in pattern matching now takes an expression