Non-portable ones are moved into new packages pkg/sys/e{unix windows}. The "e"
prefix is needed to avoid conflict with packages under golang.org/x/sys/ and can
mean "extra".
I noticed that testutil.MustPipe was not covered by any unit tests. This
converts the handful of places that should use it to do so. This changes
the coverage of pkg/testutil/must.go from 61.5% to 73.1%. There isn't
any way to increase that further without explicitly testing the panic
paths.
I started by writing tests for sys.Ioctl but after I had 100% coverage
of that function it occurred to me the function could be eliminated.
Related #1062
I started by writing tests for sys.Ioctl but after I had 100% coverage
of that function it occurred to me the function could be eliminated.
Related #1062
Since elvish does not support job control it should run all external
commands with the tty job control signals set to be ignored. See "APUE",
third edition, page 379.
This doesn't actually fix the problem in the case of broken programs
like vim which blindly assume the parent process implements job control.
But there isn't much we can do about that other than try to get those
programs to pay attention to being told to ignore SIGTSTP.
Fixes#988
