// Note that Dictionary.app will fall back to wikipedia for phrases so we
// want to allow spaces.
public bool canLookupInDictionary(NSString text)
{
if (NSObject.IsNullOrNil(text))
return false;
if (text.length() == 0)
return false;
if (!char.IsLetter(text.characterAtIndex(0)))
return false;
if (text.Any(c => c == '\t' || c == '\r' || c == '\n'))
return false;
return true;
}