Hi!
I have this weird behavior that I do not understand: when running
FOO=1 foo
I do not expect FOO to remain in the env after foo was invoked, even
if foo is a shell function. However it does, _if_ bash is invoked
in POSIX mode, something which I couldn't find documented in the
model (and I wouldn't know where to find this information in POSIX).
Is this really on purpose? It breaks natural assumptions in /bin/sh
scripting programming :/
$ cat /tmp/foo.sh
foo()
{
echo "FOO=$FOO"
}
foo
FOO=1 echo "FOO=$FOO"
foo
FOO=1 foo
foo
$ bash --version
GNU bash, version 3.2.48(1)-release (x86_64-apple-darwin12)
Copyright (C) 2007 Free Software Foundation, Inc.
$ bash foo.sh
FOO=
FOO=
FOO=
FOO=1
FOO=
$ bash --posix foo.sh
FOO=
FOO=
FOO=
FOO=1
FOO=1 <======= unexpected
