E's not E

[KaFu]

The wonder of Unicode 🙄, this one took me a little while. Fyi, if this ever bugs someone else.

MsgBox(0, "", AscW("Е"))
MsgBox(0, "", AscW("E"))

 

[jchd]

There are countless examples of such "visual collisions", depending of the font used for display. I especially like the : vs. ꞉ which makes "Z꞉abc.xyz" a valid filename in the current directory. For instance:

Local $aDiff = [ _
    "EЕ", _
    ":꞉", _
    "ÐĐƉ", _
    "êȇ", _
    "eе", _
    "ΩΩ", _
    "OΟ" _
]

Local $c, $t
For $s In $aDiff
    $t = ""
    For $i = 1 To StringLen($s)
        $c = StringMid($s, $i, 1)
        $t &= $c & @TAB & AscW($c) & @LF
    Next
    MsgBox(0, "", $t)
Next

This will expand as new scripts (written languages) are constantly added to the Unicode set. There are special measures taken for the URLs if/when Unicode is allowed there to avoid such pitfalls.