Why does ";" == ";" evaluates to "false"?

Question

Why does this (Firebug Console):

> ";" == ";"
> false

But this:

> ';' == ';'
> true

Anyone knows why this is happening?

Answer 1

Because, despite looking similar, U+037E : GREEK QUESTION MARK is not the same as U+003B : SEMICOLON

What Unicode character is this? to the rescue for this kind of trick question.