Wrong priority of logic operators

[amel27]

True Or True And False

return False, but equivalent expression

True Or (True And False)

return True

[Jpm]

your expressions are not equivalent as they are executed left to right
the first is (True or True) and False
No BUG

[Valik]

Just to further explain what JP said, the first expression becomes

True And False

Which is false and that's what your first test shows. Now, your second expression becomes

True Or False

because we've already established "True And False" is False. So, now that the Or operate is in play and True is part of the expression, the result is True.

Thus, as JP says, this is not a bug.

[amel27]

"True" and "False" may be any logical expressions, VBScript code

WScript.Echo vbTrue Or vbTrue And vbFalse

Return True

[amel27]

in others languages this expression return True too
that is, it is AutoIT feature?

[Valik]

A lot of languages give the AND operator higher precedence than OR. In those languages your two statements are equivalent. However, as documented in the helpfile(AutoIt -> Language Reference -> Operators), AND and OR have the same precedence thus your statement is evaluated left-to-right in the manner I have described.