Shell-script mode indentation not hip to && and probably || too

[Dan Jacobson]

Well, there I was typing away in Shell-script[sh] mode, hitting tab
all the while to ensure proper indentation, when all the sudden, I
noticed that the lines after a && were not more indented, like it was
no big deal.
{
    for i in ${@?}
      do
      grep -i \\b$i\\b /usr/share/edict/enamdict &&
      at_least_one_found=1 &&
      echo =====
    done
} > $T.1
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