Nice tip, but that should be m/\b(?:$criteria)\b/. 

print('BOTTOM' =~ m/\b$criteria\b/     ?1:0, "\n");  # 1
print('BOTTOM' =~ m/\b(?:$criteria)\b/ ?1:0, "\n");  # 0

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In reply to Re^2: Regular Expression match too much by ikegami
in thread Regular Expression match too much by enemyofthestate

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