git-repack: repo.usedeltabaseoffset

When configuration variable `repack.UseDeltaBaseOffset` is set
for the repository, the command passes `--delta-base-offset`
option to `git-pack-objects`; this typically results in slightly
smaller packs, but the generated packs are incompatible with
versions of git older than (and including) v1.4.3.

We will make it default to true sometime in the future, but not
for a while.

Signed-off-by: Junio C Hamano <junkio@cox.net>
This commit is contained in:
Junio C Hamano 2006-10-13 21:28:58 -07:00
parent 63fba759bc
commit b6945f570a
3 changed files with 28 additions and 1 deletions

View file

@ -224,6 +224,10 @@ pull.octopus::
pull.twohead::
The default merge strategy to use when pulling a single branch.
repack.usedeltabaseoffset::
Allow gitlink:git-repack[1] to create packs that uses
delta-base offset. Defaults to false.
show.difftree::
The default gitlink:git-diff-tree[1] arguments to be used
for gitlink:git-show[1].

View file

@ -66,6 +66,20 @@ OPTIONS
to be applied that many times to get to the necessary object.
Configuration
-------------
When configuration variable `repack.UseDeltaBaseOffset` is set
for the repository, the command passes `--delta-base-offset`
option to `git-pack-objects`; this typically results in slightly
smaller packs, but the generated packs are incompatible with
versions of git older than (and including) v1.4.3; do not set
the variable in a repository that older version of git needs to
be able to read (this includes repositories from which packs can
be copied out over http or rsync, and people who obtained packs
that way can try to use older git with it).
Author
------
Written by Linus Torvalds <torvalds@osdl.org>

View file

@ -3,7 +3,7 @@
# Copyright (c) 2005 Linus Torvalds
#
USAGE='[-a] [-d] [-f] [-l] [-n] [-q]'
USAGE='[-a] [-d] [-f] [-l] [-n] [-q] [--window=N] [--depth=N]'
. git-sh-setup
no_update_info= all_into_one= remove_redundant=
@ -24,6 +24,15 @@ do
shift
done
# Later we will default repack.UseDeltaBaseOffset to true
default_dbo=false
case "`git repo-config --bool repack.usedeltabaseoffset ||
echo $default_dbo`" in
true)
extra="$extra --delta-base-offset" ;;
esac
PACKDIR="$GIT_OBJECT_DIRECTORY/pack"
PACKTMP="$GIT_DIR/.tmp-$$-pack"
rm -f "$PACKTMP"-*