giles d1a00562a4 spec: vector primitives — bounds-checked ref/set!, vector-copy start/end slice ...

vector-ref and vector-set! now raise Eval_error on out-of-bounds index instead of
an OCaml array exception. vector-copy accepts optional start and end parameters for
slicing (R7RS §6.8). spec/primitives.sx doc updated to reflect slice params.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

2026-04-25 19:27:54 +00:00

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