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Kirill Smelkov 52894e7095 tree-diff: rework diff_tree interface to be sha1 based 
In the next commit this will allow to reduce intermediate calls, when
recursing into subtrees - at that stage we know only subtree sha1, and
it is natural for tree walker to start from that phase. For now we do

    diff_tree
        show_path
            diff_tree_sha1
                diff_tree
                    ...

and the change will allow to reduce it to

    diff_tree
        show_path
            diff_tree

Also, it will allow to omit allocating strbuf for each subtree, and just
reuse the common strbuf via playing with its len.

The above-mentioned improvements go in the next 2 patches.

The downside is that try_to_follow_renames(), if active, we cause
re-reading of 2 initial trees, which was negligible based on my timings,
and which is outweighed cogently by the upsides.

NOTE To keep with the current interface and semantics, I needed to
rename the function from diff_tree() to diff_tree_sha1(). As
diff_tree_sha1() was already used, and the function we are talking here
is its more low-level helper, let's use convention for prefixing
such helpers with "ll_". So the final renaming is

    diff_tree() -> ll_diff_tree_sha1()

Signed-off-by: Kirill Smelkov <kirr@mns.spb.ru>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-03-27 11:49:35 -07:00
block-sha1
builtin Merge branch 'sb/repack-in-c' 2014-01-27 10:45:49 -08:00
compat Merge branch 'ef/mingw-write' 2014-01-27 10:44:59 -08:00
contrib Merge branch 'jk/complete-merge-base' 2014-01-27 10:43:55 -08:00
Documentation Git 1.9-rc1 2014-01-27 11:01:35 -08:00
git-gui git-gui 0.19.0 2014-01-21 13:16:17 -08:00
gitk-git Merge git://ozlabs.org/~paulus/gitk 2014-01-23 08:50:50 -08:00
gitweb
mergetools
perl git-svn: memoize _rev_list and rebuild 2014-01-23 02:54:26 +00:00
po l10n: Bulgarian translation of git (222t21f1967u) 2014-01-29 14:29:15 +02:00
ppc
t tests: add checking that combine-diff emits only correct paths 2014-02-24 14:44:57 -08:00
templates
vcs-svn
xdiff
.gitattributes
.gitignore
.mailmap
abspath.c Merge branch 'ap/path-max' 2014-01-10 10:32:18 -08:00
aclocal.m4
advice.c
advice.h
alias.c
alloc.c
archive-tar.c
archive-zip.c
archive.c
archive.h
argv-array.c
argv-array.h
attr.c
attr.h
base85.c
bisect.c
bisect.h
blob.c
blob.h
branch.c
branch.h
builtin.h builtin/help.c: speed up is_git_command() by checking for builtin commands first 2014-01-06 11:26:31 -08:00
bulk-checkin.c
bulk-checkin.h
bundle.c
bundle.h
cache-tree.c
cache-tree.h
cache.h Merge branch 'mh/safe-create-leading-directories' 2014-01-27 10:45:33 -08:00
check-builtins.sh
check-racy.c
check_bindir
color.c
color.h
column.c
column.h
combine-diff.c combine-diff: move changed-paths scanning logic into its own function 2014-02-24 14:46:11 -08:00
command-list.txt
commit-slab.h
commit.c Merge branch 'vm/octopus-merge-bases-simplify' 2014-01-10 10:33:45 -08:00
commit.h Merge branch 'nd/shallow-clone' 2014-01-17 12:21:20 -08:00
config.c
config.mak.in
config.mak.uname
configure.ac
connect.c Merge branch 'nd/shallow-clone' 2014-01-17 12:21:20 -08:00
connect.h
connected.c Merge branch 'nd/shallow-clone' 2014-01-17 12:21:20 -08:00
connected.h
convert.c
convert.h
copy.c
COPYING
credential-cache--daemon.c
credential-cache.c
credential-store.c
credential.c
credential.h
csum-file.c Merge branch 'jk/sha1write-void' 2014-01-10 10:33:09 -08:00
csum-file.h Merge branch 'jk/sha1write-void' 2014-01-10 10:33:09 -08:00
ctype.c
daemon.c Merge branch 'nd/daemon-informative-errors-typofix' 2014-01-10 10:32:59 -08:00
date.c
decorate.c
decorate.h
delta.h
diff-delta.c
diff-lib.c combine-diff: combine_diff_path.len is not needed anymore 2014-02-24 14:44:57 -08:00
diff-no-index.c
diff.c Merge branch 'jk/diff-filespec-cleanup' 2014-01-27 10:45:03 -08:00
diff.h tree-diff: diff_tree() should now be static 2014-03-26 14:30:47 -07:00
diffcore-break.c
diffcore-delta.c
diffcore-order.c diffcore-order: export generic ordering interface 2014-02-24 14:44:57 -08:00
diffcore-pickaxe.c
diffcore-rename.c
diffcore.h diffcore-order: export generic ordering interface 2014-02-24 14:44:57 -08:00
dir.c Merge branch 'mh/safe-create-leading-directories' 2014-01-27 10:45:33 -08:00
dir.h
editor.c
entry.c
environment.c Merge branch 'nd/shallow-clone' 2014-01-17 12:21:20 -08:00
exec_cmd.c
exec_cmd.h
fast-import.c
fetch-pack.c Merge branch 'jk/allow-fetch-onelevel-refname' 2014-01-27 10:44:14 -08:00
fetch-pack.h Merge branch 'nd/shallow-clone' 2014-01-17 12:21:20 -08:00
fmt-merge-msg.h
fsck.c
fsck.h
generate-cmdlist.sh
gettext.c
gettext.h
git-add--interactive.perl
git-am.sh
git-archimport.perl
git-bisect.sh
git-compat-util.h Merge branch 'bs/mirbsd' 2014-01-10 10:33:14 -08:00
git-cvsexportcommit.perl
git-cvsimport.perl
git-cvsserver.perl
git-difftool--helper.sh
git-difftool.perl
git-filter-branch.sh
git-instaweb.sh
git-merge-octopus.sh
git-merge-one-file.sh
git-merge-resolve.sh
git-mergetool--lib.sh
git-mergetool.sh
git-p4.py git p4: fix an error message when "p4 where" fails 2014-01-22 08:06:19 -08:00
git-parse-remote.sh
git-pull.sh Merge branch 'jk/pull-rebase-using-fork-point' 2014-01-17 12:04:29 -08:00
git-quiltimport.sh
git-rebase--am.sh
git-rebase--interactive.sh
git-rebase--merge.sh
git-rebase.sh rebase: fix fork-point with zero arguments 2014-01-09 15:05:26 -08:00
git-relink.perl
git-remote-testgit.sh
git-request-pull.sh
git-send-email.perl Merge branch 'rk/send-email-ssl-cert' 2014-01-27 10:44:34 -08:00
git-sh-i18n.sh
git-sh-setup.sh Merge branch 'jn/pager-lv-default-env' 2014-01-13 11:33:35 -08:00
git-stash.sh stash: handle specifying stashes with $IFS 2014-01-07 10:51:04 -08:00
git-submodule.sh Merge branch 'fp/submodule-checkout-mode' 2014-01-17 12:21:20 -08:00
git-svn.perl
GIT-VERSION-GEN Git 1.9-rc2 2014-01-31 14:16:06 -08:00
git-web--browse.sh
git.c Merge branch 'nd/shallow-clone' 2014-01-17 12:21:20 -08:00
git.rc Makefile: Fix compilation of Windows resource file 2014-01-23 10:00:28 -08:00
git.spec.in
gpg-interface.c
gpg-interface.h
graph.c
graph.h
grep.c
grep.h
hash.c
hash.h
help.c
help.h
hex.c
http-backend.c
http-fetch.c
http-push.c
http-walker.c
http.c
http.h
ident.c
imap-send.c
INSTALL
kwset.c
kwset.h
levenshtein.c
levenshtein.h
LGPL-2.1
line-log.c line-log: convert to using diff_tree_sha1() 2014-02-05 10:50:36 -08:00
line-log.h
line-range.c
line-range.h
list-objects.c Merge branch 'jk/mark-edges-uninteresting' 2014-01-27 10:45:08 -08:00
list-objects.h
ll-merge.c
ll-merge.h
lockfile.c
log-tree.c Merge branch 'bc/log-decoration' 2014-01-10 10:32:39 -08:00
log-tree.h
mailmap.c
mailmap.h
Makefile Merge branch 'jk/revision-o-is-in-libgit-a' 2014-01-27 10:45:52 -08:00
match-trees.c
merge-blobs.c
merge-blobs.h
merge-recursive.c Merge branch 'mh/safe-create-leading-directories' 2014-01-27 10:45:33 -08:00
merge-recursive.h
merge.c
mergesort.c
mergesort.h
name-hash.c
notes-cache.c
notes-cache.h
notes-merge.c
notes-merge.h
notes-utils.c
notes-utils.h
notes.c
notes.h
object.c
object.h
pack-check.c
pack-revindex.c
pack-revindex.h
pack-write.c Merge branch 'jk/sha1write-void' 2014-01-10 10:33:09 -08:00
pack.h
pager.c Merge branch 'jn/pager-lv-default-env' 2014-01-13 11:33:35 -08:00
parse-options-cb.c
parse-options.c
parse-options.h
patch-delta.c
patch-ids.c
patch-ids.h
path.c
pathspec.c Merge branch 'nd/negative-pathspec' 2014-01-10 10:31:48 -08:00
pathspec.h
pkt-line.c
pkt-line.h
preload-index.c
pretty.c
prio-queue.c
prio-queue.h
progress.c
progress.h
prompt.c
prompt.h
quote.c
quote.h
reachable.c
reachable.h
read-cache.c
README
reflog-walk.c
reflog-walk.h
refs.c Merge branch 'mh/safe-create-leading-directories' 2014-01-27 10:45:33 -08:00
refs.h
RelNotes Git 1.8.5.3 2014-01-13 11:28:26 -08:00
remote-curl.c Merge branch 'nd/shallow-clone' 2014-01-17 12:21:20 -08:00
remote-testsvn.c
remote.c Merge branch 'mh/retire-ref-fetch-rules' 2014-01-27 10:44:07 -08:00
remote.h Merge branch 'nd/shallow-clone' 2014-01-17 12:21:20 -08:00
replace_object.c
rerere.c
rerere.h
resolve-undo.c
resolve-undo.h
revision.c revision: convert to using diff_tree_sha1() 2014-02-05 10:51:16 -08:00
revision.h
run-command.c
run-command.h
send-pack.c Merge branch 'nd/shallow-clone' 2014-01-17 12:21:20 -08:00
send-pack.h
sequencer.c
sequencer.h
server-info.c
setup.c
sh-i18n--envsubst.c
sha1-array.c
sha1-array.h
sha1-lookup.c
sha1-lookup.h
sha1_file.c Merge branch 'ss/safe-create-leading-dir-with-slash' 2014-01-27 10:45:37 -08:00
sha1_name.c Merge branch 'jk/interpret-branch-name-fix' 2014-01-27 10:44:21 -08:00
shallow.c Merge branch 'nd/shallow-clone' 2014-01-17 12:21:20 -08:00
shell.c
shortlog.h
show-index.c
sideband.c
sideband.h
sigchain.c
sigchain.h
strbuf.c
strbuf.h
streaming.c Merge branch 'ef/mingw-write' 2014-01-27 10:44:59 -08:00
streaming.h
string-list.c
string-list.h
submodule.c
submodule.h
symlinks.c
tag.c
tag.h
tar.h
test-chmtime.c
test-ctype.c
test-date.c
test-delta.c
test-dump-cache-tree.c
test-genrandom.c
test-index-version.c
test-line-buffer.c
test-match-trees.c
test-mergesort.c
test-mktemp.c
test-parse-options.c
test-path-utils.c
test-prio-queue.c
test-read-cache.c
test-regex.c
test-revision-walking.c
test-run-command.c
test-scrap-cache-tree.c
test-sha1.c
test-sha1.sh
test-sigchain.c
test-string-list.c
test-subprocess.c
test-svn-fe.c
test-urlmatch-normalization.c
test-wildmatch.c
thread-utils.c
thread-utils.h
trace.c
transport-helper.c Merge branch 'ef/mingw-write' 2014-01-27 10:44:59 -08:00
transport.c Merge branch 'nd/shallow-clone' 2014-01-17 12:21:20 -08:00
transport.h
tree-diff.c tree-diff: rework diff_tree interface to be sha1 based 2014-03-27 11:49:35 -07:00
tree-walk.c tree-walk: finally switch over tree descriptors to contain a pre-parsed entry 2014-02-24 14:43:29 -08:00
tree-walk.h tree-walk: finally switch over tree descriptors to contain a pre-parsed entry 2014-02-24 14:43:29 -08:00
tree.c
tree.h
unimplemented.sh
unix-socket.c
unix-socket.h
unpack-trees.c
unpack-trees.h
upload-pack.c Merge branch 'nd/shallow-clone' 2014-01-17 12:21:20 -08:00
url.c
url.h
urlmatch.c
urlmatch.h
usage.c
userdiff.c
userdiff.h
utf8.c
utf8.h
varint.c
varint.h
version.c
version.h
walker.c
walker.h
wildmatch.c
wildmatch.h
wrap-for-bin.sh
wrapper.c
write_or_die.c
ws.c
wt-status.c
wt-status.h
xdiff-interface.c
xdiff-interface.h
zlib.c

README 

////////////////////////////////////////////////////////////////

	Git - the stupid content tracker

////////////////////////////////////////////////////////////////

"git" can mean anything, depending on your mood.

 - random three-letter combination that is pronounceable, and not
   actually used by any common UNIX command.  The fact that it is a
   mispronunciation of "get" may or may not be relevant.
 - stupid. contemptible and despicable. simple. Take your pick from the
   dictionary of slang.
 - "global information tracker": you're in a good mood, and it actually
   works for you. Angels sing, and a light suddenly fills the room.
 - "goddamn idiotic truckload of sh*t": when it breaks

Git is a fast, scalable, distributed revision control system with an
unusually rich command set that provides both high-level operations
and full access to internals.

Git is an Open Source project covered by the GNU General Public
License version 2 (some parts of it are under different licenses,
compatible with the GPLv2). It was originally written by Linus
Torvalds with help of a group of hackers around the net.

Please read the file INSTALL for installation instructions.

See Documentation/gittutorial.txt to get started, then see
Documentation/everyday.txt for a useful minimum set of commands, and
Documentation/git-commandname.txt for documentation of each command.
If git has been correctly installed, then the tutorial can also be
read with "man gittutorial" or "git help tutorial", and the
documentation of each command with "man git-commandname" or "git help
commandname".

CVS users may also want to read Documentation/gitcvs-migration.txt
("man gitcvs-migration" or "git help cvs-migration" if git is
installed).

Many Git online resources are accessible from http://git-scm.com/
including full documentation and Git related tools.

The user discussion and development of Git take place on the Git
mailing list -- everyone is welcome to post bug reports, feature
requests, comments and patches to git@vger.kernel.org (read
Documentation/SubmittingPatches for instructions on patch submission).
To subscribe to the list, send an email with just "subscribe git" in
the body to majordomo@vger.kernel.org. The mailing list archives are
available at http://news.gmane.org/gmane.comp.version-control.git/,
http://marc.info/?l=git and other archival sites.

The maintainer frequently sends the "What's cooking" reports that
list the current status of various development topics to the mailing
list.  The discussion following them give a good reference for
project status, development direction and remaining tasks.