I didn't take the title literally. The OP appears to asking why do BLOCK and eval BLOCK behave differently in the provided code. I did not set to list all the difference between eval BLOCK and do BLOCK, at least one of which hasn't been mentioned yet (do BLOCK's interaction with the while statement modifier).

In reply to Re^4: what difference between eval and do ? by ikegami
in thread what difference between eval and do ? by Anonymous Monk

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