tests/histedit-helpers.sh

rust: run `cargo clippy`

These automatic fixes are good to have because they make the code
more idiomatic and less surprising.

The transform from `sort` -> `sort_unstable` is questionable, but this is
only in a test, so it doesn't matter in our case.

fixbundle() {
    grep -v 'saving bundle' | grep -v 'saved backup' | \
        grep -v added | grep -v adding | \
        grep -v "unable to find 'e' for patching" | \
        grep -v "e: No such file or directory" | \
    cat
}