On Tue, Oct 16, 2012 at 03:08:45PM +0200, Sven Van Caekenberghe wrote: > I understand that it would be nice eventually to have images saved like that > automatically. > > It is still a pity that the VM has to change for that ;-)
If you don't want to do it in the VM, you can do it with a shell script. Just make a 512 byte file that starts with the shebang line that you want to use, prepend it to the saved image file (with /bin/cat) and set file mode executable (chmod). You could also do this from a method in the image if you prefer, although chmod would require FFI or OSProcess. Dave > > But as far as I understood, the first 512 bytes are skipped today as well, > so if you (or any program) does a binary edit of the image header, it would > work, no ? > > On 16 Oct 2012, at 14:58, Camillo Bruni <[email protected]> wrote: > > > > > On 2012-10-16, at 14:49, Damien Cassou <[email protected]> wrote: > > > >> On Sat, Oct 13, 2012 at 10:51 PM, Camillo Bruni <[email protected]> > >> wrote: > >>>> It is supported, see for instance: > >>>> http://marc.info/?l=squeak-vm-dev&m=124049248310307&w=2 > >>> awesome! strange that nobody promoted that so far... > >>> well I guess yet another of these hidden treasures ;) > >> > >> so, how can we have all images start with that line? > > > > > > we have to change the VM, yay! :/, to add a language side-hook: > > > > https://code.google.com/p/cog/issues/detail?id=101 > > > > so once I have a bit of time, I'll change the VM to always include this > > header. > > Load support for such images exist since the early days apparently. > > > > I will simply add a #header argument to the #snapshot method, that way the > > image can pass an arbitrary header to the VM on image save. > > > > best > > cami >
