help: add --config to list all available config

diff --git a/Documentation/git-gc.txt b/Documentation/git-gc.txt
index 3126e0dd002eca7ac420932bb9d1ace63752e8dc..24b2dd44fe445a66121fa957f0af8e2209a85676 100644 (file)
--- a/Documentation/git-gc.txt
+++ b/Documentation/git-gc.txt
@@ -9,7 +9,7 @@ git-gc - Cleanup unnecessary files and optimize the local repository
 SYNOPSIS
 --------
 [verse]
-'git gc' [--aggressive] [--auto] [--quiet] [--prune=<date> | --no-prune] [--force]
+'git gc' [--aggressive] [--auto] [--quiet] [--prune=<date> | --no-prune] [--force] [--keep-largest-pack]
 
 DESCRIPTION
 -----------
@@ -56,10 +56,16 @@ single pack using `git repack -d -l`.  Setting the value of `gc.auto`
 to 0 disables automatic packing of loose objects.
 +
 If the number of packs exceeds the value of `gc.autoPackLimit`,
-then existing packs (except those marked with a `.keep` file)
+then existing packs (except those marked with a `.keep` file
+or over `gc.bigPackThreshold` limit)
 are consolidated into a single pack by using the `-A` option of
-'git repack'. Setting `gc.autoPackLimit` to 0 disables
-automatic consolidation of packs.
+'git repack'.
+If the amount of memory is estimated not enough for `git repack` to
+run smoothly and `gc.bigPackThreshold` is not set, the largest
+pack will also be excluded (this is the equivalent of running `git gc`
+with `--keep-base-pack`).
+Setting `gc.autoPackLimit` to 0 disables automatic consolidation of
+packs.
 +
 If houskeeping is required due to many loose objects or packs, all
 other housekeeping tasks (e.g. rerere, working trees, reflog...) will
@@ -84,7 +90,12 @@ be performed as well.
        Force `git gc` to run even if there may be another `git gc`
        instance running on this repository.
 
-Configuration
+--keep-largest-pack::
+       All packs except the largest pack and those marked with a
+       `.keep` files are consolidated into a single pack. When this
+       option is used, `gc.bigPackThreshold` is ignored.
+
+CONFIGURATION
 -------------
 
 The optional configuration variable `gc.reflogExpire` can be
@@ -129,7 +140,7 @@ The optional configuration variable `gc.aggressiveWindow` controls how
 much time is spent optimizing the delta compression of the objects in
 the repository when the --aggressive option is specified.  The larger
 the value, the more time is spent optimizing the delta compression.  See
-the documentation for the --window' option in linkgit:git-repack[1] for
+the documentation for the --window option in linkgit:git-repack[1] for
 more details.  This defaults to 250.
 
 Similarly, the optional configuration variable `gc.aggressiveDepth`
@@ -144,7 +155,7 @@ old a stale working tree should be before `git worktree prune` deletes
 it. Default is "3 months ago".
 
 
-Notes
+NOTES
 -----
 
 'git gc' tries very hard not to delete objects that are referenced