tests/histedit-helpers.sh

fileset: actually implement 'minusset'

  $ hg debugfileset 'a* - a1'

was tracing back because 'minus' symbol was not supported.

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"
}