I have an odd behavior with my app and I don't know where it comes from. I have implemented a NSScanner for a text view content that works very well. The scanner works in conjunction with the text storage to set attributes on the text storage string via text view delegate methods. However, each time I enter a space, the enclosing scroll view scrolls back to the top of the text view. Can anyone give me a hint where this comes from ?
Probably not much hassle for those more experienced than me, I found out the possible reason for this behavior (see above) so I post it here in case anyone will look for solutions for similar "problems". It seems that turning off "Non-contiguous layout" option in the XCode 4.x attributes inspector for the NSTextView in case will solve the problem. The documentation for NSLayoutManager provides more clues (under "Overview" section): "Noncontiguous layout is an optional layout manager behavior new in Mac OS X v10.5..."
Maybe somebody more experienced than me will provide more info on this and the reason of this behavior of the enclosing scroller view when non-contiguous option is checked (which is, by default).