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 <camillobruni@gmail.com> wrote:
On 2012-10-16, at 14:49, Damien Cassou <damien.cassou@gmail.com> wrote:
On Sat, Oct 13, 2012 at 10:51 PM, Camillo Bruni <camillobruni@gmail.com> 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