On Jun 29, 3:11 am, Rolf <[email protected]> wrote: > This is very strange. > > There is something hidden in Seberino's worksheets that prevents them > from being executed automatically. > First I thought it is the comment added above the first cell. But his > new example demonstrates that this is obvious not core of the problem. > Both his example woksheets don't work on my system either, but if I > transfer all that is visible to a new worksheets the code works > perfectly. > > Unfortunately, it is impossible to debug a worksheet or to read it > 'manually' as a text file.
Not quite! The worksheet has a folder in your .sage/ sage_notebook.sagenb/home/ directory (usually e.g. admin/175 or something). > > I wonder if it is possible to send viruses by worksheets? Good question. http://www.sagemath.org/files/thesis/aner-thesis-2009.pdf has looked at some things like that, maybe this specific question? > As worksheets may contain hidden information, can be automatically > executed, and cannot be read as a simple text file, all this raises > grave security concerns. I don't see any hidden information here at all, though. I do see someone using %auto %hide and expecting something to appear. The interact does run, by the way - that should be clear from the green bar along the side and the progress indicator in your browser's title area. I'm not sure whether this is a feature or a bug, though. Ordinarily we would want 'auto' and 'hide' to do those things, but it appears here that it hides even output we normally want to appear. What do you think the "right" behavior should be for %auto && %hide? I'm really not sure, because I thought in the past that it should just hide the input cell, but maybe it should also hide the output, as seems to be happening here. I've never tried to use %hide for a cell that had output before, I usually just use it for background definitions. Input welcome! - kcrisman -- To post to this group, send an email to [email protected] To unsubscribe from this group, send an email to [email protected] For more options, visit this group at http://groups.google.com/group/sage-devel URL: http://www.sagemath.org
