Merge branch 'ms/refs-optimize'

"git refs optimize" is added for not very well explained reason
despite it does the same thing as "git pack-refs"...

* ms/refs-optimize:
  t: add test for git refs optimize subcommand
  t0601: refactor tests to be shareable
  builtin/refs: add optimize subcommand
  doc: pack-refs: factor out common options
  builtin/pack-refs: factor out core logic into a shared library
  builtin/pack-refs: convert to use the generic refs_optimize() API
  reftable-backend: implement 'optimize' action
  files-backend: implement 'optimize' action
  refs: add a generic 'optimize' API

1 files changed, 1 insertions, 52 deletions

diff --git a/Documentation/git-pack-refs.adoc b/Documentation/git-pack-refs.adoc
index 42b90051e6..fde9f2f294 100644
--- a/Documentation/git-pack-refs.adoc
+++ b/Documentation/git-pack-refs.adoc
@@ -45,58 +45,7 @@ unpacked.
 OPTIONS
 -------
 
---all::
-
-The command by default packs all tags and refs that are already
-packed, and leaves other refs
-alone.  This is because branches are expected to be actively
-developed and packing their tips does not help performance.
-This option causes all refs to be packed as well, with the exception
-of hidden refs, broken refs, and symbolic refs. Useful for a repository
-with many branches of historical interests.
-
---no-prune::
-
-The command usually removes loose refs under `$GIT_DIR/refs`
-hierarchy after packing them.  This option tells it not to.
-
---auto::
-
-Pack refs as needed depending on the current state of the ref database. The
-behavior depends on the ref format used by the repository and may change in the
-future.
-+
-	- "files": Loose references are packed into the `packed-refs` file
-	  based on the ratio of loose references to the size of the
-	  `packed-refs` file. The bigger the `packed-refs` file, the more loose
-	  references need to exist before we repack.
-+
-	- "reftable": Tables are compacted such that they form a geometric
-	  sequence. For two tables N and N+1, where N+1 is newer, this
-	  maintains the property that N is at least twice as big as N+1. Only
-	  tables that violate this property are compacted.
-
---include <pattern>::
-
-Pack refs based on a `glob(7)` pattern. Repetitions of this option
-accumulate inclusion patterns. If a ref is both included in `--include` and
-`--exclude`, `--exclude` takes precedence. Using `--include` will preclude all
-tags from being included by default. Symbolic refs and broken refs will never
-be packed. When used with `--all`, it will be a noop. Use `--no-include` to clear
-and reset the list of patterns.
-
---exclude <pattern>::
-
-Do not pack refs matching the given `glob(7)` pattern. Repetitions of this option
-accumulate exclusion patterns. Use `--no-exclude` to clear and reset the list of
-patterns. If a ref is already packed, including it with `--exclude` will not
-unpack it.
-+
-When used with `--all`, pack only loose refs which do not match any of
-the provided `--exclude` patterns.
-+
-When used with `--include`, refs provided to `--include`, minus refs that are
-provided to `--exclude` will be packed.
+include::pack-refs-options.adoc[]
 
 
 BUGS