Prevent `shell_keep_pipe` from stopping on nonzero exit status code (#9817)

The `shell_impl` and `shell_impl_async` functions no longer return
`success` because it was always `true`. If the command didn't succeed
both functions would return an `Err`.

This was also the reason, why `shell_keep_pipe` didn't work. It relied
upon the value of `success` and aborted in case of an `Err`.
It now removes any selection for which `shell_impl` returns `Err`.

If the command always fails, the selections are preserved and an error
message is displayed in the status bar.

0 files changed, 0 insertions, 0 deletions