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David Barr 2794ad5244 fast-import: Allow filemodify to set the root 
v1.7.3-rc0~75^2 (Teach fast-import to import subtrees named by tree id,
2010-06-30) has a shortcoming - it doesn't allow the root to be set.
Extend this behaviour by allowing the root to be referenced as the
empty path, "".

For a command (like filter-branch --subdirectory-filter) that wants
to commit a lot of trees that already exist in the object db, writing
undeltified objects as loose files only to repack them later can
involve a significant amount of overhead.
(23% slow-down observed on Linux 2.6.35, worse on Mac OS X 10.6)

Fortunately we have fast-import (which is one of the only git commands
that will write to a pack directly) but there is not an advertised way
to tell fast-import to commit a given tree without unpacking it.

This patch changes that, by allowing

	M 040000 <tree id> ""

as a filemodify line in a commit to reset to a particular tree without
any need to parse it.  For example,

	M 040000 4b825dc642 ""

is a synonym for the deleteall command and the fast-import equivalent of

	git read-tree 4b825dc642

Signed-off-by: David Barr <david.barr@cordelta.com>
Commit-message-by: Jonathan Nieder <jrnieder@gmail.com>
Acked-by: Sverre Rabbelier <srabbelier@gmail.com>
Tested-by: Ramkumar Ramachandra <artagnon@gmail.com>
Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-10-13 15:10:31 -07:00
..
howto
Merge branch 'jn/cherry-revert-message-clean-up'
2010-08-31 16:25:11 -07:00
pt_BR
Documentation: update pt-BR
2009-10-01 08:21:35 -04:00
RelNotes
Start 1.7.4 cycle
2010-09-29 15:26:17 -07:00
technical
Merge branch 'jn/doc-backslash'
2010-09-03 09:43:42 -07:00
.gitattributes
Define the project whitespace policy
2008-02-11 13:23:15 -08:00
.gitignore
Documentation: Avoid use of xmlto --stringparam
2009-12-05 10:03:49 -08:00
asciidoc.conf
Merge branch 'jc/maint-doc-em-dash'
2010-09-03 09:43:42 -07:00
blame-options.txt
blame-options.txt: Add default value for -M/-C options.
2010-05-07 09:34:59 -07:00
build-docdep.perl
…
cat-texi.perl
Fix the building of gitman.info document
2008-12-29 00:40:10 -08:00
cmd-list.perl
Documentation: rename gitlink macro to linkgit
2008-01-06 18:41:44 -08:00
CodingGuidelines
CodingGuidelines: spell Arithmetic Expansion with $(($var))
2010-09-27 10:45:29 -07:00
config.txt
Merge branch 'jk/repack-reuse-object'
2010-10-06 12:11:26 -07:00
date-formats.txt
Document date formats accepted by parse_date()
2009-12-03 12:41:37 -08:00
diff-format.txt
Fix typos in technical documentation.
2010-01-31 10:24:53 -08:00
diff-generate-patch.txt
git log -p -m: document -m and honor --first-parent
2010-02-12 11:32:23 -08:00
diff-options.txt
git log/diff: add -G<regexp> that greps in the patch text
2010-08-31 14:30:29 -07:00
docbook-xsl.css
docbook: change css style
2009-04-06 00:27:09 -07:00
docbook.xsl
Documentation: set a !DOCTYPE for user manual
2010-08-20 10:53:56 -07:00
everyday.txt
everyday: fsck and gc are not everyday operations
2010-03-16 19:25:20 -07:00
fetch-options.txt
fetch: allow command line --tags to override config
2010-08-14 19:24:23 -07:00
fix-texi.perl
…
git-add.txt
Merge branch 'jc/maint-doc-em-dash'
2010-09-03 09:43:42 -07:00
git-am.txt
Merge branch 'sh/am-keep-cr'
2010-03-10 15:32:34 -08:00
git-annotate.txt
Documentation: minor grammatical fixes.
2009-03-02 12:34:54 -08:00
git-apply.txt
Documentation: cite git-am from git-apply
2010-08-09 09:15:41 -07:00
git-archimport.txt
Martin Langhoff has a new e-mail address
2010-10-06 12:08:48 -07:00
git-archive.txt
archive documentation: attributes are taken from the tree by default
2010-02-12 09:38:20 -08:00
git-bisect-lk2009.txt
Documentation: remove stray backslashes from "Fighting regressions" article
2010-08-20 14:16:51 -07:00
git-bisect.txt
Documentation: add "Fighting regressions with git bisect" article
2009-11-08 18:29:08 -08:00
git-blame.txt
Merge remote branch 'remotes/trast-doc/for-next'
2010-01-20 20:28:49 -08:00
git-branch.txt
Merge branch 'maint'
2010-04-17 12:40:45 -07:00
git-bundle.txt
git-bundle.txt: Clarify rev-list-args restrictions
2010-08-23 09:05:32 -07:00
git-cat-file.txt
Documentation: link to gitrevisions rather than git-rev-parse
2010-07-05 13:39:13 -07:00
git-check-attr.txt
Documentation: minor grammatical fixes in git-check-attr.txt
2009-03-22 21:02:38 -07:00
git-check-ref-format.txt
Documentation: link to gitrevisions rather than git-rev-parse
2010-07-05 13:39:13 -07:00
git-checkout-index.txt
Documentation: remove backslashes in manpage synopses
2010-08-20 14:16:22 -07:00
git-checkout.txt
Fix missing 'does' in man-page for 'git checkout'
2010-09-27 15:08:06 -07:00
git-cherry-pick.txt
Documentation: link to gitrevisions rather than git-rev-parse
2010-07-05 13:39:13 -07:00
git-cherry.txt
Documentation: spell 'git cmd' without dash throughout
2010-01-10 13:01:28 +01:00
git-citool.txt
Documentation: spell 'git cmd' without dash throughout
2010-01-10 13:01:28 +01:00
git-clean.txt
Add -e/--exclude to git-clean.
2010-07-20 16:52:53 -07:00
git-clone.txt
Documentation/git-clone: describe --mirror more verbosely
2010-10-06 11:24:17 -07:00
git-commit-tree.txt
Documentation: remove backslashes in manpage synopses
2010-08-20 14:16:22 -07:00
git-commit.txt
Documentation: spelling fixes
2010-07-20 16:59:17 -07:00
git-config.txt
Merge remote branch 'remotes/trast-doc/for-next'
2010-01-20 20:28:49 -08:00
git-count-objects.txt
count-objects: Add total pack size to verbose output
2008-08-17 01:01:42 -07:00
git-cvsexportcommit.txt
Martin Langhoff has a new e-mail address
2010-10-06 12:08:48 -07:00
git-cvsimport.txt
Documentation: spelling fixes
2010-07-20 16:59:17 -07:00
git-cvsserver.txt
Martin Langhoff has a new e-mail address
2010-10-06 12:08:48 -07:00
git-daemon.txt
Documentation: spell 'git cmd' without dash throughout
2010-01-10 13:01:28 +01:00
git-describe.txt
Documentation: explain the meaning of "-g" in git-describe output
2010-03-24 11:31:45 -07:00
git-diff-files.txt
Documentation: spell 'git cmd' without dash throughout
2010-01-10 13:01:28 +01:00
git-diff-index.txt
Documentation: spell 'git cmd' without dash throughout
2010-01-10 13:01:28 +01:00
git-diff-tree.txt
Documentation: spell 'git cmd' without dash throughout
2010-01-10 13:01:28 +01:00
git-diff.txt
Documentation: link to gitrevisions rather than git-rev-parse
2010-07-05 13:39:13 -07:00
git-difftool.txt
Merge remote branch 'remotes/trast-doc/for-next'
2010-01-20 20:28:49 -08:00
git-fast-export.txt
Merge branch 'jn/doc-backslash'
2010-09-03 09:43:42 -07:00
git-fast-import.txt
fast-import: Allow filemodify to set the root
2010-10-13 15:10:31 -07:00
git-fetch-pack.txt
Documentation: describe --thin more accurately
2010-02-18 17:13:18 -08:00
git-fetch.txt
fetch/push: fix usage strings
2010-04-09 21:23:10 -07:00
git-filter-branch.txt
Documentation: Refer to git-commit-tree in git-filter-branch help
2010-09-27 11:39:44 -07:00
git-fmt-merge-msg.txt
merge: Make 'merge.log' an integer or boolean option
2010-09-09 11:39:23 -07:00
git-for-each-ref.txt
Documentation: remove backslashes in manpage synopses
2010-08-20 14:16:22 -07:00
git-format-patch.txt
Merge branch 'rr/format-patch-count-without-merges'
2010-09-29 13:49:09 -07:00
git-fsck-objects.txt
Documentation: be consistent about "git-" versus "git "
2008-07-01 17:20:15 -07:00
git-fsck.txt
Documentation: spell 'git cmd' without dash throughout
2010-01-10 13:01:28 +01:00
git-gc.txt
Merge branch 'maint'
2010-07-05 11:56:53 -07:00
git-get-tar-commit-id.txt
Documentation: spell 'git cmd' without dash throughout
2010-01-10 13:01:28 +01:00
git-grep.txt
Documentation: add missing quotes to "git grep" examples
2010-08-20 14:16:21 -07:00
git-gui.txt
Documentation: spell 'git cmd' without dash throughout
2010-01-10 13:01:28 +01:00
git-hash-object.txt
Documentation: spelling fixes
2010-07-20 16:59:17 -07:00
git-help.txt
Work around em-dash handling in newer AsciiDoc
2010-08-24 09:48:20 -07:00
git-http-backend.txt
Documentation: Clarify support for smart HTTP backend
2010-03-30 16:49:19 -07:00
git-http-fetch.txt
Documentation: spell 'git cmd' without dash throughout
2010-01-10 13:01:28 +01:00
git-http-push.txt
Use 'fast-forward' all over the place
2009-10-24 23:50:28 -07:00
git-imap-send.txt
Merge branch 'rr/imap-send-unconfuse-from-line'
2010-04-03 12:28:42 -07:00
git-index-pack.txt
Documentation: describe --thin more accurately
2010-02-18 17:13:18 -08:00
git-init-db.txt
init-db: migrate to parse-options
2009-07-12 14:36:40 -07:00
git-init.txt
Add a "TEMPLATE DIRECTORY" section to git-init[1].
2010-02-17 12:17:53 -08:00
git-instaweb.txt
Merge branch 'jc/maint-doc-em-dash'
2010-09-03 09:43:42 -07:00
git-log.txt
Documentation/git-log: Clarify --full-diff
2010-08-09 11:53:32 -07:00
git-lost-found.txt
Documentation: be consistent about "git-" versus "git "
2008-07-01 17:20:15 -07:00
git-ls-files.txt
Merge branch 'js/ls-files-x-doc'
2010-09-18 14:46:44 -07:00
git-ls-remote.txt
Update my e-mail address
2008-08-01 23:21:44 -07:00
git-ls-tree.txt
Documentation: format full commands in typewriter font
2010-01-10 13:01:25 +01:00
git-mailinfo.txt
git-mailinfo documentation: clarify -u/--encoding
2010-06-13 20:18:23 -07:00
git-mailsplit.txt
documentation: 'git-mailsplit --keep-cr' is not hidden anymore
2010-02-28 11:04:19 -08:00
git-merge-base.txt
merge-base --independent to print reduced parent list in a merge
2010-08-18 14:02:03 -07:00
git-merge-file.txt
merge-file: add option to select union merge favor
2010-03-02 21:16:45 -08:00
git-merge-index.txt
Documentation: remove backslashes in manpage synopses
2010-08-20 14:16:22 -07:00
git-merge-one-file.txt
Documentation: spell 'git cmd' without dash throughout
2010-01-10 13:01:28 +01:00
git-merge-tree.txt
Improve language in git-merge.txt and related docs
2008-12-09 20:57:52 -08:00
git-merge.txt
merge: --log appends shortlog to message if specified
2010-05-10 12:02:20 -07:00
git-mergetool--lib.txt
Work around em-dash handling in newer AsciiDoc
2010-08-24 09:48:20 -07:00
git-mergetool.txt
Documentation: Explain git-mergetool's use of temporary files
2010-07-19 09:16:09 -07:00
git-mktag.txt
Documentation: be consistent about "git-" versus "git "
2008-07-01 17:20:15 -07:00
git-mktree.txt
mktree --batch: build more than one tree object
2009-05-16 10:28:59 -07:00
git-mv.txt
UI consistency: allow --force for where -f means force
2009-08-29 14:08:03 -07:00
git-name-rev.txt
Documentation: spell 'git cmd' without dash throughout
2010-01-10 13:01:28 +01:00
git-notes.txt
notes: allow --dry-run for -n and --verbose for -v
2010-08-09 10:12:50 -07:00
git-pack-objects.txt
pack-objects documentation: Fix --honor-pack-keep as well.
2010-02-24 19:10:22 -08:00
git-pack-redundant.txt
Documentation: spell 'git cmd' without dash throughout
2010-01-10 13:01:28 +01:00
git-pack-refs.txt
doc/git-pack-refs: fix two grammar issues
2009-04-05 00:39:37 -07:00
git-parse-remote.txt
parse-remote: remove unused functions
2009-06-11 19:50:45 -07:00
git-patch-id.txt
Documentation: spell 'git cmd' without dash throughout
2010-01-10 13:01:28 +01:00
git-peek-remote.txt
Documentation: spell 'git cmd' without dash throughout
2010-01-10 13:01:28 +01:00
git-prune-packed.txt
prune-packed: migrate to parse-options
2009-07-10 23:57:21 -07:00
git-prune.txt
prune: allow --dry-run for -n and --verbose for -v
2010-08-09 10:13:18 -07:00
git-pull.txt
Documentation: flesh out “git pull” description
2010-08-02 15:48:18 -07:00
git-push.txt
Documentation: do not convert ... operator to ellipses
2010-08-20 14:16:51 -07:00
git-quiltimport.txt
quiltimport documentation: --dry-run and -n are synonyms
2009-09-13 01:32:49 -07:00
git-read-tree.txt
read-tree: deprecate syntax without tree-ish args
2010-09-10 08:37:14 -07:00
git-rebase.txt
Merge branch 'jn/doc-backslash'
2010-09-03 09:43:42 -07:00
git-receive-pack.txt
Documentation: spell 'git cmd' without dash throughout
2010-01-10 13:01:28 +01:00
git-reflog.txt
Documentation: link to gitrevisions rather than git-rev-parse
2010-07-05 13:39:13 -07:00
git-relink.txt
Documentation: remove backslashes in manpage synopses
2010-08-20 14:16:22 -07:00
git-remote-helpers.txt
Documentation/remote-helpers: Fix typos and improve language
2010-04-18 13:56:29 -07:00
git-remote.txt
Merge branch 'jn/remote-set-branches'
2010-06-18 11:16:55 -07:00
git-repack.txt
repack: add -F flag to let user choose between --no-reuse-delta/object
2010-09-27 12:39:05 -07:00
git-replace.txt
Documentation: format full commands in typewriter font
2010-01-10 13:01:25 +01:00
git-repo-config.txt
Documentation: be consistent about "git-" versus "git "
2008-07-01 17:20:15 -07:00
git-request-pull.txt
request-pull.txt: Document -p option
2010-07-25 21:52:19 -07:00
git-rerere.txt
rerere.txt: Document forget subcommand
2010-07-05 11:51:20 -07:00
git-reset.txt
git-reset.txt: make modes description more consistent
2010-09-18 15:14:41 -07:00
git-rev-list.txt
Merge branch 'il/rev-glob'
2010-02-23 12:05:18 -08:00
git-rev-parse.txt
Documentation: remove stray backslashes in rev-parse manual
2010-08-20 14:16:22 -07:00
git-revert.txt
Documentation: link to gitrevisions rather than git-rev-parse
2010-07-05 13:39:13 -07:00
git-rm.txt
Documentation: clarify quoting in "git rm" example
2010-08-20 14:16:21 -07:00
git-send-email.txt
Merge branch 'tr/send-email-8bit' into maint
2010-06-28 16:19:03 -07:00
git-send-pack.txt
Documentation: describe --thin more accurately
2010-02-18 17:13:18 -08:00
git-sh-setup.txt
Documentation: spell 'git cmd' without dash throughout
2010-01-10 13:01:28 +01:00
git-shell.txt
shell: Rewrite documentation and improve error message
2010-08-24 10:47:21 -07:00
git-shortlog.txt
shortlog: Document and test --format option
2010-05-04 15:30:59 -07:00
git-show-branch.txt
Documentation: remove stray backslash in show-branch discussion
2010-08-20 14:19:46 -07:00
git-show-index.txt
Documentation: spell 'git cmd' without dash throughout
2010-01-10 13:01:28 +01:00
git-show-ref.txt
Documentation: unbreak regex in show-ref manual
2010-08-20 14:16:21 -07:00
git-show.txt
Documentation: link to gitrevisions rather than git-rev-parse
2010-07-05 13:39:13 -07:00
git-stage.txt
Add a built-in alias for 'stage' to the 'add' command
2008-12-02 16:13:16 -08:00
git-stash.txt
detached-stash: update Documentation
2010-08-21 23:51:22 -07:00
git-status.txt
Submodules: Use "ignore" settings from .gitmodules too for diff and status
2010-08-09 09:11:44 -07:00
git-stripspace.txt
Documentation: be consistent about "git-" versus "git "
2008-07-01 17:20:15 -07:00
git-submodule.txt
git submodule add: Remove old docs about implicit -f
2010-07-19 11:11:07 -07:00
git-svn.txt
Documentation/git-svn: discourage "noMetadata"
2010-09-24 08:21:54 +00:00
git-symbolic-ref.txt
Documentation: spell 'git cmd' without dash throughout
2010-01-10 13:01:28 +01:00
git-tag.txt
Documentation: spell 'git cmd' without dash throughout
2010-01-10 13:01:28 +01:00
git-tar-tree.txt
Documentation: spell 'git cmd' without dash throughout
2010-01-10 13:01:28 +01:00
git-tools.txt
…
git-unpack-file.txt
Documentation: be consistent about "git-" versus "git "
2008-07-01 17:20:15 -07:00
git-unpack-objects.txt
Documentation formatting and cleanup
2008-07-01 17:20:16 -07:00
git-update-index.txt
Documentation: remove backslashes in manpage synopses
2010-08-20 14:16:22 -07:00
git-update-ref.txt
Documentation: be consistent about "git-" versus "git "
2008-07-01 17:20:15 -07:00
git-update-server-info.txt
Remove obsolete bug warning in man git-update-server-info
2009-04-25 09:29:38 -07:00
git-upload-archive.txt
Documentation: spell 'git cmd' without dash throughout
2010-01-10 13:01:28 +01:00
git-upload-pack.txt
Documentation: spell 'git cmd' without dash throughout
2010-01-10 13:01:28 +01:00
git-var.txt
Fix 'git var' usage synopsis
2010-02-14 18:23:16 -08:00
git-verify-pack.txt
Documentation: spell 'git cmd' without dash throughout
2010-01-10 13:01:28 +01:00
git-verify-tag.txt
Documentation: spell 'git cmd' without dash throughout
2010-01-10 13:01:28 +01:00
git-web--browse.txt
Work around em-dash handling in newer AsciiDoc
2010-08-24 09:48:20 -07:00
git-whatchanged.txt
Documentation: spell 'git cmd' without dash throughout
2010-01-10 13:01:28 +01:00
git-write-tree.txt
Documentation: spell 'git cmd' without dash throughout
2010-01-10 13:01:28 +01:00
git.txt
Git 1.7.3.1
2010-09-29 10:39:53 -07:00
gitattributes.txt
Merge branch 'bc/fortran-userdiff'
2010-09-29 13:49:23 -07:00
gitcli.txt
Update "describe" documentation to match reality
2009-09-22 19:40:05 -07:00
gitcore-tutorial.txt
Documentation: avoid stray backslashes in core tutorial
2010-08-20 14:16:50 -07:00
gitcvs-migration.txt
Documentation: spell 'git cmd' without dash throughout
2010-01-10 13:01:28 +01:00
gitdiffcore.txt
gitdiffcore doc: update pickaxe description
2010-08-31 14:28:20 -07:00
gitglossary.txt
Documentation: fix links to "everyday.html"
2008-11-14 21:48:10 -08:00
githooks.txt
notes: implement helpers needed for note copying during rewrite
2010-03-12 21:55:39 -08:00
gitignore.txt
Documentation: clarify quoting in gitignore docs
2010-08-20 14:16:21 -07:00
gitk.txt
Documentation: link to gitrevisions rather than git-rev-parse
2010-07-05 13:39:13 -07:00
gitmodules.txt
Typos in code comments, an error message, documentation
2010-08-22 13:26:13 -07:00
gitrepository-layout.txt
Documentation: spelling fixes
2010-07-20 16:59:17 -07:00
gitrevisions.txt
Documentation: gitrevisions
2010-07-05 13:39:02 -07:00
gittutorial-2.txt
Documentation: spell 'git cmd' without dash throughout
2010-01-10 13:01:28 +01:00
gittutorial.txt
Documentation: spell 'git cmd' without dash throughout
2010-01-10 13:01:28 +01:00
gitworkflows.txt
Documentation: spell 'git cmd' without dash throughout
2010-01-10 13:01:28 +01:00
glossary-content.txt
Use 'fast-forward' all over the place
2009-10-24 23:50:28 -07:00
howto-index.sh
…
i18n.txt
Documentation: spell 'git cmd' without dash throughout
2010-01-10 13:01:28 +01:00
install-doc-quick.sh
install-doc-quick - use git --exec-path to find git-sh-setup
2008-07-08 16:36:03 -07:00
install-webdoc.sh
install-webdoc: keep installed RelNotes-*.txt
2010-09-09 16:17:59 -07:00
mailmap.txt
Documentation: minor grammatical fixes in git-blame.txt.
2009-03-17 12:08:43 -07:00
Makefile
docs: fix Makefile dependency for user manual
2010-08-21 21:53:16 -07:00
manpage-1.72.xsl
Documentation: move quieting params into manpage-base.xsl
2009-03-27 00:33:19 -07:00
manpage-base-url.xsl.in
Documentation: Avoid use of xmlto --stringparam
2009-12-05 10:03:49 -08:00
manpage-base.xsl
Documentation: use "spurious .sp" XSLT if DOCBOOK_SUPPRESS_SP is set
2009-04-01 11:02:42 -07:00
manpage-bold-literal.xsl
Documentation: option to render literal text as bold for manpages
2009-03-27 00:33:20 -07:00
manpage-normal.xsl
Documentation: move "spurious .sp" code into manpage-base.xsl
2009-03-27 00:33:19 -07:00
manpage-quote-apos.xsl
Quote ' as \(aq in manpages
2009-10-22 12:59:50 -07:00
manpage-suppress-sp.xsl
Documentation: use "spurious .sp" XSLT if DOCBOOK_SUPPRESS_SP is set
2009-04-01 11:02:42 -07:00
merge-config.txt
Merge branch 'rr/fmt-merge-msg'
2010-09-29 13:48:20 -07:00
merge-options.txt
merge: Make '--log' an integer option for number of shortlog entries
2010-09-09 11:39:20 -07:00
merge-strategies.txt
merge-recursive --renormalize
2010-08-06 09:20:02 -07:00
pretty-formats.txt
pretty: Introduce ' ' modifier to add space if non-empty
2010-06-16 14:45:09 -07:00
pretty-options.txt
pretty-options.txt: match --format's documentation with implementation.
2010-08-05 09:49:49 -07:00
pull-fetch-param.txt
Documentation: spell 'git cmd' without dash throughout
2010-01-10 13:01:28 +01:00
rev-list-options.txt
rev-list-options: clarify --parents and --children
2010-09-30 09:38:47 -07:00
revisions.txt
update comment and documentation for :/foo syntax
2010-09-27 10:54:52 -07:00
SubmittingPatches
SubmittingPatches: Document some extra tags used in commit messages
2010-10-06 13:45:42 -07:00
urls-remotes.txt
Documentation: spell 'git cmd' without dash throughout
2010-01-10 13:01:28 +01:00
urls.txt
Documentation: spelling fixes
2010-07-20 16:59:17 -07:00
user-manual.conf
Documentation: rename gitlink macro to linkgit
2008-01-06 18:41:44 -08:00
user-manual.txt
user-manual: fix anchor name Finding-comments-With-given-Content
2010-09-29 13:21:49 -07:00