dmiller 9450cb725a Avoid boolean tautologies of the form 'not x == y' ...

Lua operator 'not' has higher precedence than '==', so the statement

    not x == "something"

is equivalent to:

    (not x) == "something"

which will always be false, since the value of 'not x' will be either
'true' or 'false' and the string "something" is not the boolean 'true'
or 'false'. This is usually resolved by using the '~=' operator.

2016-05-23 04:30:06 +00:00

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