comparing extended characters

[Guillermo]

... obviously, I meant o = O but ó <> Ó ...

$a = "si"
$b = "SI"

If $a = $b Then
    MsgBox(0, $a & " / " & $b, "They're identical")
Else
    MsgBox(0, $a & " / " & $b, "They're different")
    
EndIf

$a = "sí"
$b = "SÍ"

If $a = $b Then
    MsgBox(0, $a & " / " & $b, "They're identical")
Else
        MsgBox(0, $a & " / " & $b, "They're different")
EndIf

I can't understand this. If AutoIT supports ANSI, why are special characters different depending on whether they're in lower or upper case?

My script deals with text and has to compare strings constantly, so this is a big issue for me. If I could understand how AutoIT "reads" these characters then I could figure out a solution.

Edited February 24, 2006 by Guillermo

[GaryFrost]

From the help section Operators

= Tests if two values are equal (case insensitive if used with strings). e.g. If $var= 5 Then (true if $var equals 5)

== Tests if two values are equal (case sensitive if used with strings)

[andyswarbs]

If you check the helpfile regarding operators you will see that both = and == can be used for testing strings - but the results may be different.

= Tests if two values are equal (case insensitive if used with strings). == Tests if two values are equal (case sensitive if used with strings)

[Guillermo]

I didn't make my point...

I've read the help file and I know the difference between "=" and "==". However, AutoIT behaves differently when testing extended characters.

melon = MELON (true)

melon == MELON (false)

but

melón = MELÓN (false)

melón == MELÓN (false)

If you try out the code I pasted in my first post you'll understand what I mean.

My question is why.

[UTA]

The simplest solution would be to use following:

$a = "si"
$b = "SI"

If $a = $b Then
    MsgBox(0, $a & " / " & $b, "They're identical")
Else
    MsgBox(0, $a & " / " & $b, "They're different")
    
EndIf

$a = "sí"
$b = "SÍ"
$c = StringUpper($a)
If $b = $c Then
    MsgBox(0, $a & " / " & $b, "They're identical")
Else
    MsgBox(0, $a & " / " & $b, "They're different")
EndIf

It's always the best to convert both arguments to the same "level" (Uppercase) before comparing. Then you are more flexible.

btw: I do not really know why it's different on special characters, but I mostly convert two strings before I compare them. That's why I never recognized such a problem

UTA

Edited February 24, 2006 by UTA

[Guillermo]

Yeah, that's the funny part. After converting the strings to the same level everything works fine...

Wouldn't that be a bug?

[UTA]

I'm not quite sure if that is a bug. I'm too lazy to test it in another programming language. I suppose that it is a "feature" which is based on the special characters. But as I said: I'm not sure...