The function delete-environment-variable! does a dynamic type check to assure the env-var name is a string then grabs a mutex, so it looks like it is thread safe. But, beyond that, I'd be speculating.
On Sun, May 1, 2022 at 9:34 AM Sam Lee <samlee...@yahoo.com> wrote: > On 2022-05-01 08:45:11 -0400, Derek Rhodes wrote: > > Hi Sam, I dug around in the source and found this function: > > > > (delete-environment-variable! "FOOBAR"). > > > > It was located in os-primitives.scm: > > > > > https://git.savannah.gnu.org/cgit/mit-scheme.git/tree/src/runtime/os-primitives.scm?h=release-11.2 > > Thank you. > What is the difference between (set-environment-variable! "FOOBAR" #f) > and (delete-environment-variable! "FOOBAR") ? The source code looks like > they do different things. I would assume that > "delete-environment-variable!" > is the proper method for deleting an environment variable. >
