parse error in a function

[w***@gmail.com]

I extended a gcd function for Integer class. Below is the content:

Integer extend [
gcd: anInt [
| x y |
(self < anInt)
ifTrue: [
x := anInt .
y := self .
]
ifFalse: [
x := self .
y := anInt .
]

[ (y=0) not ] whileTrue: [
|r|
r := x \\ y .
x := y .
y := r .
]

^x .
]
]

When I ran gnu on it, gnu complained that there is a parse error, and it expected ']' on line 14. Line 14 is this: [(y=0) not] whileTrue: [

Could anyway please help out? I am fairly new to smalltalk.

[Joachim]

I think you're missing a period at the end of line 12 ( the end of you ifTrue:ifFalse: send).

Joachim