George, hello. On 3 Aug 2021, at 17:38, George Neuner wrote:
Racket is multi-platform and tries to present a common API for dealing with underlying operating systems. Windows is an important platform, but Windows does not have the concept of fork/exec ... so Racket doesn't offer it either.
Ah: good point. That said, I'd have guessed that similar behaviour -- 'invoke and don't return' -- would be at least emulatable on Windows, though.
The closest (and simplest) you can achieve, I think, would to start Vi asynchronously using 'process*' and then terminate the Racket script.
I don't think that works, since terminating the Racket process would also terminate its child (unless I were to do something similar to the usual extra fork to disconnect the child from its parent, and... hmmm, this isn't sounding very rackety).
Doing the next simplest thing -- using (process* "/usr/bin/vi" '("foo")) and calling (control 'wait) using the result -- doesn't seem to work, but instead just hangs, until I kill the vi child process. Without digging into it too deeply, I'd guess that's because of the usual problems about wiring up FDs and buffers and so on, which I was rather hoping to avoid.
Best wishes, Norman -- Norman Gray : http://www.astro.gla.ac.uk/users/norman/it/ Research IT Coordinator : School of Physics and Astronomy -- You received this message because you are subscribed to the Google Groups "Racket Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to racket-users+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/racket-users/D9F0F60A-D41F-454B-AC8C-9E9FD140F9D9%40glasgow.ac.uk.
