project root. Implies <<Remap_to_ancestor>>.
--prune-empty::
- Some kind of filters will generate empty commits, that left the tree
- untouched. This switch allow git-filter-branch to ignore such
- commits. Though, this switch only applies for commits that have one
- and only one parent, it will hence keep merges points. Also, this
- option is not compatible with the use of `--commit-filter`. Though you
- just need to use the function 'git_commit_non_empty_tree "$@"' instead
- of the `git commit-tree "$@"` idiom in your commit filter to make that
- happen.
+ Some filters will generate empty commits that leave the tree untouched.
+ This option instructs git-filter-branch to remove such commits if they
+ have exactly one or zero non-pruned parents; merge commits will
+ therefore remain intact. This option cannot be used together with
+ `--commit-filter`, though the same effect can be achieved by using the
+ provided `git_commit_non_empty_tree` function in a commit filter.
--original <namespace>::
Use this option to set the namespace where the original commits