tests/histedit-helpers.sh

lock: factor out lock testing into a separate function

This is going to be needed for upcoming work with lock inheritance.

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"
}