The terminal buffer closes automatically when using `:terminal` and the
command exits without an error. This messes up some tests that expect
the terminal buffer to still be open. We can force the buffer not to
close by passing an argument to `:terminal`. This can be anything, since
the shell-test stub simply prints whatever argument it's given.
Problem:
If shell-test finishes before the next RPC call, TermClose has already
been triggered, so the test fails.
Solution:
Add INTERACT argument so that shell-test keeps running.
Extend the capabilities of is_os to detect more platforms such as
freebsd and openbsd. Also remove `iswin()` helper function as it can be
replaced by `is_os("win")`.
This is essentially a convenience wrapper around the `pending()`
function, similar to `skip_fragile()` but more general-purpose.
Also remove `pending_win32` function as it can be replaced by
`skip(iswin())`.
- Partially fixes#10386 except for the case where the alternate buffer
is the default, empty, first buffer created on startup. #vimlife
- TODO: port patches related to `can_unload_buffer`, maybe that fully
fixes#10386?
vim-patch:8.0.1732: crash when terminal API call deletes the buffer
