Jerry wrote:
mdj wrote: [...]It is very handy using the .. notation to move about in a directory tree, as you know. It's a shame that the ProDOS (SOS?) designers didn't provide a way of "trimming" a path as well as extending it.Yes, the absence of a 'self' and 'parent' referential entry in each directory makes it impossible to use relative paths, so while CD is a handy addition, you still can't do, for example, BLOAD ../THINGEach subdirectory header contains a parent-pointer, and parent-entry number,so it would be possible to walk back up the pathname toward the root. ProDOS' prefix would also make it possible to implement ".." using a stringtruncation.
Do I hear a ProDOS+ in the making? ;-) -michael NadaNet file server for Apple II computers! Home page: http://members.aol.com/MJMahon/ "The wastebasket is our most important design tool--and it's seriously underused."