UITextView subclass to address text selection issues in iOS 7

gistfile1.m

// 2013/09/26 by Greg Pierce
//
// Example code for workarounds to text selection issues in iOS 7 UITextView
// This code is culled from several examples seen elsewhere
// This code may totally crash your app...no guarantees.
//
// Using this UITextView subclass significantly improves the ability to do basic text selection
// in standard UITextViews on iOS 7...particular avoiding failures to selection 
// empty lines and trying to select line endings in general.
//
// Comments on improving this workaround are welcome! @agiletortoise

#import "ATTextView.h"

@implementation ATTextView

- (id)initWithFrame:(CGRect)frame
{
    self = [super initWithFrame:frame];
    if (self) {
        //
    }
    return self;
}

- (CGRect)firstRectForRange:(UITextRange *)range
{
    if ([[[UIDevice currentDevice] systemVersion] floatValue] >= 7.0) {
        CGRect r1= [self caretRectForPosition:[self positionWithinRange:range farthestInDirection:UITextLayoutDirectionRight]];
        CGRect r2= [self caretRectForPosition:[self positionWithinRange:range farthestInDirection:UITextLayoutDirectionLeft]];
        return CGRectUnion(r1,r2);
    }
    return [super firstRectForRange:range];
}

- (NSUInteger)characterIndexForPoint:(CGPoint)point
{
    if (self.text.length == 0) {
        return 0;
    }
    
    CGRect r1;
    if ([[self.text substringFromIndex:self.text.length-1] isEqualToString:@"\n"]) {
        r1 = [super caretRectForPosition:[super positionFromPosition:self.endOfDocument offset:-1]];
        CGRect sr = [super caretRectForPosition:[super positionFromPosition:self.beginningOfDocument offset:0]];
        r1.origin.x = sr.origin.x;
        r1.origin.y += self.font.lineHeight;
    } else {
        r1 = [super caretRectForPosition:[super positionFromPosition:self.endOfDocument offset:0]];
    }
    
    if ((point.x > r1.origin.x && point.y >= r1.origin.y) || point.y >= r1.origin.y+r1.size.height) {
        return [super offsetFromPosition:self.beginningOfDocument toPosition:self.endOfDocument];
    }
    
    CGFloat fraction;
    NSUInteger index = [self.textStorage.layoutManagers[0] characterIndexForPoint:point inTextContainer:self.textContainer fractionOfDistanceBetweenInsertionPoints:&fraction];
    
    return index;
}

- (UITextPosition *)closestPositionToPoint:(CGPoint)point
{
    if ([[[UIDevice currentDevice] systemVersion] floatValue] >= 7.0) {
        point.y -= self.font.lineHeight/2;
        NSUInteger index = [self characterIndexForPoint:point];
        UITextPosition *pos = [self positionFromPosition:self.beginningOfDocument offset:index];
        return pos;
    }
    return [super closestPositionToPoint:point];
}

- (void)scrollRangeToVisible:(NSRange)range
{
    [super scrollRangeToVisible:range];
    
    if (self.layoutManager.extraLineFragmentTextContainer != nil && self.selectedRange.location == range.location)
    {
        CGRect caretRect = [self caretRectForPosition:self.selectedTextRange.start];
        [self scrollRectToVisible:caretRect animated:YES];
    }
}

@end

Its very close!!

But only one thing. After resign first responder cursor stays at top of text view, but not on current position. How can I change it?

What is the point of the -firstRectForRange: override? I can't find a difference whether I include it or not.