by Heresy.Mc:

Before filing a bug, please check whether it has been fixed since
the latest release: run "hg pull -u" and retry what you did to
reproduce the problem.  Thanks.

What steps will reproduce the problem?
1./src/pkg/http/response.go#L361
2.func (r *Response) GetHeader(key string) (value string)
3.

What is the expected output? What do you see instead?
According to the comments "GetHeader returns the value of the response 
header with the given key, and true." the GetHeader() should return two 
values. But here it returns one.

What is your $GOOS?  $GOARCH?
$GOOS=linux
$GOARCH=amd64


Which revision are you using?  (hg identify)
release.2010-02-23


Please provide any additional information below.
// GetHeader returns the value of the response header with the given 
// key, and true.  If there were multiple headers with this key, their 
// values are concatenated, with a comma delimiter.  If there were no 
// response headers with the given key, it returns the empty string and 
// false.  Keys are not case sensitive. 
func (r *Response) GetHeader(key string) (value string) { 
    value, _ = r.Header[CanonicalHeaderKey(key)] 
    return 

}