My team and I are trying to test the limits of SharePoint 2010 - specifically around URL and path lengths. In our root web, we created doc library that contains a main folder with an arbitrarily long name that includes spaces, similar to what we'd expect a user to potentially do.
When we upload files to the library/main folder some files are accepted without issue and others warn that they surpass the URL limit in SharePoint and have to be opened from the local desktop. The problem is that the URL in either case is 400+ characters and hence I would assume we wouldn't be able to add any documents based on Microsoft's URL Path Restrictions for SP 2010.
Why am I am able to upload documents with URL's greater than 256? Why can I upload some and not others? What are the true rules for path/url lengths in a scenario like this?