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Charles Bailey 79bc4ef368 filter-branch: eliminate duplicate mapped parents When multiple parents of a merge commit get mapped to the same commit, filter-branch used to pass all instances of the parent commit to the parent and commit filters and to "git commit-tree" or "git_commit_non_empty_tree". This can often happen when extracting a small project from a large repository; merges can join history with no commits on any branch which affect the paths being retained. Once the intermediate commits have been filtered out, all the immediate parents of the merge commit can end up being mapped to the same commit - either the original merge-base or an ancestor of it. "git commit-tree" would display an error but write the commit with the normalized parents in any case. "git_commit_non_empty_tree" would fail to notice that the commit being made was in fact a non-merge commit and would retain it even if a further pass with "--prune-empty" would discard the commit as empty. Ensure that duplicate parents are pruned before the parent filter to make "--prune-empty" idempotent, removing all empty non-merge commits in a singe pass. Signed-off-by: Charles Bailey <cbailey32@bloomberg.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>		2014-07-01 08:30:41 -07:00
Documentation	Git 2.0.1	2014-06-25 12:21:11 -07:00
block-sha1	Merge branch 'jk/pack-bitmap'	2014-02-27 14:01:48 -08:00
builtin	Merge branch 'jl/status-added-submodule-is-never-ignored' into maint	2014-06-25 11:50:03 -07:00
compat	Merge branch 'ym/fix-opportunistic-index-update-race' into maint	2014-06-25 11:49:48 -07:00
contrib	Merge branch 'rh/prompt-pcmode-avoid-eval-on-refname' into maint	2014-05-28 15:46:36 -07:00
ewah	ewah_bitmap.c: do not assume size_t and eword_t are the same size	2014-04-22 16:21:16 -07:00
git-gui	Merge branch 'jl/use-vsatisfy-correctly-for-2.0'	2014-05-19 10:35:24 -07:00
gitk-git	…
gitweb	Merge branch 'jl/nor-or-nand-and'	2014-04-08 12:00:28 -07:00
mergetools	…
perl	code and test: fix misuses of "nor"	2014-03-31 15:29:33 -07:00
po	fr: a lot of good fixups	2014-05-17 19:08:59 +02:00
ppc	…
t	filter-branch: eliminate duplicate mapped parents	2014-07-01 08:30:41 -07:00
templates	…
vcs-svn	…
xdiff	C: have space around && and \|\| operators	2013-10-16 10:26:39 -07:00
.gitattributes	…
.gitignore	Merge branch 'kb/fast-hashmap'	2014-02-27 14:01:09 -08:00
.mailmap	…
COPYING	…
GIT-VERSION-GEN	Git 2.0.1	2014-06-25 12:21:11 -07:00
INSTALL	…
LGPL-2.1	…
Makefile	Merge branch 'nd/index-pack-one-fd-per-thread' into maint	2014-06-25 11:47:58 -07:00
README	…
RelNotes	Git 2.0.1	2014-06-25 12:21:11 -07:00
abspath.c	…
aclocal.m4	…
advice.c	Merge branch 'jc/push-2.0-default-to-simple'	2014-03-07 15:13:15 -08:00
advice.h	Merge branch 'jc/push-2.0-default-to-simple'	2014-03-07 15:13:15 -08:00
alias.c	…
alloc.c	…
archive-tar.c	…
archive-zip.c	…
archive.c	Merge branch 'rm/strchrnul-not-strlen'	2014-03-18 13:51:18 -07:00
archive.h	…
argv-array.c	…
argv-array.h	…
attr.c	attr.c: use ALLOC_GROW() in handle_attr_line()	2014-03-03 14:54:37 -08:00
attr.h	…
base85.c	…
bisect.c	Merge branch 'nd/log-show-linear-break'	2014-04-03 12:38:11 -07:00
bisect.h	…
blob.c	…
blob.h	…
branch.c	Merge branch 'an/branch-config-message'	2014-03-31 16:31:20 -07:00
branch.h	…
builtin.h	…
bulk-checkin.c	finish_tmp_packfile():use strbuf for pathname construction	2014-03-03 12:15:10 -08:00
bulk-checkin.h	…
bundle.c	Merge branch 'nd/log-show-linear-break'	2014-04-03 12:38:11 -07:00
bundle.h	…
cache-tree.c	Merge branch 'rm/strchrnul-not-strlen'	2014-03-18 13:51:18 -07:00
cache-tree.h	…
cache.h	Merge branch 'ym/fix-opportunistic-index-update-race' into maint	2014-06-25 11:49:48 -07:00
check-builtins.sh	check-builtins.sh: use the $(...) construct for command substitution	2014-03-25 13:42:52 -07:00
check-racy.c	…
check_bindir	…
color.c	…
color.h	…
column.c	comments: fix misuses of "nor"	2014-03-31 15:29:27 -07:00
column.h	…
combine-diff.c	Merge branch 'mk/show-s-no-extra-blank-line-for-merges' into maint	2014-06-25 11:49:39 -07:00
command-list.txt	…
commit-slab.h	…
commit.c	Merge branch 'nd/log-show-linear-break'	2014-04-03 12:38:11 -07:00
commit.h	Merge branch 'bp/commit-p-editor' into maint	2014-04-08 12:07:06 -07:00
config.c	Merge branch 'ow/config-mailmap-pathname' into maint	2014-06-25 11:45:55 -07:00
config.mak.in	…
config.mak.uname	Merge branch 'nd/index-pack-one-fd-per-thread' into maint	2014-06-25 11:47:58 -07:00
configure.ac	Merge branch 'dm/configure-iconv-locale-charset'	2014-03-25 11:07:51 -07:00
connect.c	Merge branch 'nd/indent-fix-connect-c'	2014-03-25 11:07:06 -07:00
connect.h	…
connected.c	…
connected.h	…
convert.c	…
convert.h	…
copy.c	…
credential-cache--daemon.c	…
credential-cache.c	…
credential-store.c	…
credential.c	…
credential.h	…
csum-file.c	…
csum-file.h	…
ctype.c	…
daemon.c	daemon: move daemonize() to libgit.a	2014-02-10 10:46:35 -08:00
date.c	i18n: fix uncatchable comments for translators in date.c	2014-04-17 11:03:28 -07:00
decorate.c	…
decorate.h	…
delta.h	comments: fix misuses of "nor"	2014-03-31 15:29:27 -07:00
diff-delta.c	…
diff-lib.c	Merge branch 'jk/diff-files-assume-unchanged' into maint	2014-06-25 11:47:09 -07:00
diff-no-index.c	Merge branch 'jc/fix-diff-no-index-diff-opt-parse' into maint	2014-04-09 11:59:16 -07:00
diff.c	Merge branch 'jk/diff-follow-must-take-one-pathspec' into maint	2014-06-25 11:47:23 -07:00
diff.h	Merge branch 'jc/hold-diff-remove-q-synonym-for-no-deletion'	2014-03-07 15:17:41 -08:00
diffcore-break.c	…
diffcore-delta.c	…
diffcore-order.c	Merge branch 'nd/no-more-fnmatch'	2014-03-14 14:25:31 -07:00
diffcore-pickaxe.c	pickaxe: simplify kwset loop in contains()	2014-03-24 15:13:17 -07:00
diffcore-rename.c	Merge branch 'dd/use-alloc-grow'	2014-03-18 13:50:21 -07:00
diffcore.h	Merge branch 'nd/diff-quiet-stat-dirty' into maint	2014-03-18 13:59:56 -07:00
dir.c	Merge branch 'cb/aix'	2014-04-03 12:38:38 -07:00
dir.h	pathspec: pass directory indicator to match_pathspec_item()	2014-02-24 14:37:19 -08:00
editor.c	…
entry.c	Merge branch 'mh/remove-subtree-long-pathname-fix' into maint	2014-04-03 13:39:05 -07:00
environment.c	environment.c: fix constness for odb_pack_keep()	2014-03-31 10:31:43 -07:00
exec_cmd.c	…
exec_cmd.h	…
fast-import.c	use strchrnul() in place of strchr() and strlen()	2014-03-10 08:35:30 -07:00
fetch-pack.c	Merge branch 'jk/shallow-update-fix' into maint	2014-04-03 13:39:03 -07:00
fetch-pack.h	…
fmt-merge-msg.h	…
fsck.c	Merge branch 'hs/simplify-bit-setting-in-fsck-tree'	2014-03-31 16:30:44 -07:00
fsck.h	…
generate-cmdlist.sh	…
gettext.c	…
gettext.h	…
git-add--interactive.perl	Merge branch 'jl/nor-or-nand-and'	2014-04-08 12:00:28 -07:00
git-am.sh	Merge branch 'jl/nor-or-nand-and'	2014-04-08 12:00:28 -07:00
git-archimport.perl	…
git-bisect.sh	git-bisect.sh: fix a few style issues	2014-03-03 18:29:34 -08:00
git-compat-util.h	Merge branch 'ym/fix-opportunistic-index-update-race' into maint	2014-06-25 11:49:48 -07:00
git-cvsexportcommit.perl	…
git-cvsimport.perl	…
git-cvsserver.perl	…
git-difftool--helper.sh	…
git-difftool.perl	difftool: support repositories with .git-files	2014-02-24 09:53:57 -08:00
git-filter-branch.sh	filter-branch: eliminate duplicate mapped parents	2014-07-01 08:30:41 -07:00
git-instaweb.sh	git-sh-setup.sh: add variable to use the stuck-long mode	2014-02-03 12:11:10 -08:00
git-merge-octopus.sh	…
git-merge-one-file.sh	…
git-merge-resolve.sh	…
git-mergetool--lib.sh	…
git-mergetool.sh	…
git-p4.py	Merge branch 'cl/p4-use-diff-tree' into maint	2014-05-08 10:01:32 -07:00
git-parse-remote.sh	…
git-pull.sh	pull: do not abuse 'break' inside a shell 'case'	2014-06-12 12:15:49 -07:00
git-quiltimport.sh	git-sh-setup.sh: add variable to use the stuck-long mode	2014-02-03 12:11:10 -08:00
git-rebase--am.sh	Merge branch 'km/avoid-non-function-return-in-rebase'	2014-04-21 10:42:46 -07:00
git-rebase--interactive.sh	Merge branch 'rr/rebase-autostash-fix' into maint	2014-06-25 11:49:31 -07:00
git-rebase--merge.sh	Merge branch 'km/avoid-non-function-return-in-rebase'	2014-04-21 10:42:46 -07:00
git-rebase.sh	Merge branch 'rr/rebase-autostash-fix' into maint	2014-06-25 11:49:31 -07:00
git-relink.perl	…
git-remote-testgit.sh	…
git-request-pull.sh	Merge branch 'lt/request-pull'	2014-05-19 10:35:36 -07:00
git-send-email.perl	Merge branch 'rk/send-email-ssl-cert' into maint	2014-02-13 13:38:19 -08:00
git-sh-i18n.sh	…
git-sh-setup.sh	git-sh-setup.sh: add variable to use the stuck-long mode	2014-02-03 12:11:10 -08:00
git-stash.sh	Merge branch 'jc/stash-pop-not-popped' into maint	2014-04-03 13:39:03 -07:00
git-submodule.sh	Revert "submodule: explicit local branch creation in module_clone"	2014-04-02 14:15:36 -07:00
git-svn.perl	Git 2.0: git svn: Set default --prefix='origin/' if --prefix is not given	2014-04-19 11:30:13 +00:00
git-web--browse.sh	…
git.c	rename read_replace_refs to check_replace_refs	2014-02-20 14:16:55 -08:00
git.rc	…
git.spec.in	…
gpg-interface.c	…
gpg-interface.h	…
graph.c	…
graph.h	…
grep.c	Merge branch 'rs/grep-h-c'	2014-03-18 13:51:20 -07:00
grep.h	…
hashmap.c	…
hashmap.h	hashmap.h: use 'unsigned int' for hash-codes everywhere	2014-02-24 15:26:30 -08:00
help.c	Merge branch 'rt/help-pretty-prints-cmd-names'	2014-03-14 14:27:00 -07:00
help.h	…
hex.c	…
http-backend.c	…
http-fetch.c	…
http-push.c	object.h: centralize object flag allocation	2014-03-25 15:09:24 -07:00
http-walker.c	…
http.c	Merge branch 'mh/object-code-cleanup'	2014-03-14 14:26:29 -07:00
http.h	Merge branch 'jl/nor-or-nand-and'	2014-04-08 12:00:28 -07:00
ident.c	…
imap-send.c	…
khash.h	…
kwset.c	…
kwset.h	…
levenshtein.c	…
levenshtein.h	…
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/pack-bitmap'	2014-04-08 12:00:33 -07:00
list-objects.h	…
ll-merge.c	…
ll-merge.h	…
lockfile.c	…
log-tree.c	Merge branch 'nd/log-show-linear-break'	2014-04-03 12:38:11 -07:00
log-tree.h	…
mailmap.c	…
mailmap.h	…
match-trees.c	use strchrnul() in place of strchr() and strlen()	2014-03-10 08:35:30 -07:00
merge-blobs.c	…
merge-blobs.h	…
merge-recursive.c	merge-recursive.c: fix case-changing merge bug	2014-05-07 13:53:10 -07:00
merge-recursive.h	…
merge.c	…
mergesort.c	…
mergesort.h	…
name-hash.c	name-hash: retire unused index_name_exists()	2014-02-24 15:26:33 -08:00
notes-cache.c	…
notes-cache.h	…
notes-merge.c	…
notes-merge.h	…
notes-utils.c	notes-utils: handle boolean notes.rewritemode correctly	2014-02-18 15:51:29 -08:00
notes-utils.h	…
notes.c	…
notes.h	…
object.c	Document some functions defined in object.c	2014-02-28 13:18:09 -08:00
object.h	Merge branch 'nd/log-show-linear-break'	2014-04-03 12:38:11 -07:00
pack-bitmap-write.c	Use hashcpy() when copying object names	2014-03-06 14:03:12 -08:00
pack-bitmap.c	add `ignore_missing_links` mode to revwalk	2014-04-04 13:31:38 -07:00
pack-bitmap.h	…
pack-check.c	…
pack-objects.c	pack-objects: use free()+xcalloc() instead of xrealloc()+memset()	2014-06-02 13:51:22 -07:00
pack-objects.h	…
pack-revindex.c	…
pack-revindex.h	…
pack-write.c	finish_tmp_packfile():use strbuf for pathname construction	2014-03-03 12:15:10 -08:00
pack.h	finish_tmp_packfile():use strbuf for pathname construction	2014-03-03 12:15:10 -08:00
pager.c	pager: do allow spawning pager recursively	2014-04-28 16:03:22 -07:00
parse-options-cb.c	…
parse-options.c	Merge branch 'mr/opt-set-ptr'	2014-04-08 12:00:17 -07:00
parse-options.h	Merge branch 'mr/opt-set-ptr'	2014-04-08 12:00:17 -07:00
patch-delta.c	…
patch-ids.c	patch-ids.c: use ALLOC_GROW() in add_commit()	2014-03-03 14:49:12 -08:00
patch-ids.h	…
path.c	Merge branch 'jk/config-path-include-fix' into maint	2014-03-18 14:00:15 -07:00
pathspec.c	pathspec: convert some match_pathspec_depth() to ce_path_match()	2014-02-24 14:36:52 -08:00
pathspec.h	…
pkt-line.c	…
pkt-line.h	comments: fix misuses of "nor"	2014-03-31 15:29:27 -07:00
preload-index.c	pathspec: convert some match_pathspec_depth() to ce_path_match()	2014-02-24 14:36:52 -08:00
pretty.c	pretty.c: format string with truncate respects logOutputEncoding	2014-05-21 11:13:30 -07:00
prio-queue.c	…
prio-queue.h	…
progress.c	i18n: mark all progress lines for translation	2014-02-24 09:08:37 -08:00
progress.h	…
prompt.c	…
prompt.h	…
quote.c	…
quote.h	…
reachable.c	…
reachable.h	…
read-cache.c	Merge branch 'ym/fix-opportunistic-index-update-race' into maint	2014-06-25 11:49:48 -07:00
reflog-walk.c	Merge branch 'sh/use-hashcpy'	2014-03-18 13:51:05 -07:00
reflog-walk.h	…
refs.c	remote prune: optimize "dangling symref" check/warning	2014-05-27 12:30:47 -07:00
refs.h	remote prune: optimize "dangling symref" check/warning	2014-05-27 12:30:47 -07:00
remote-curl.c	http: never use curl_easy_perform	2014-02-18 15:50:57 -08:00
remote-testsvn.c	use strchrnul() in place of strchr() and strlen()	2014-03-10 08:35:30 -07:00
remote.c	Merge branch 'jl/nor-or-nand-and' into maint	2014-04-09 12:03:26 -07:00
remote.h	push: detect local refspec errors early	2014-03-05 13:23:27 -08:00
replace_object.c	Merge branch 'dd/use-alloc-grow'	2014-03-18 13:50:21 -07:00
rerere.c	pathspec: pass directory indicator to match_pathspec_item()	2014-02-24 14:37:19 -08:00
rerere.h	…
resolve-undo.c	Merge branch 'nd/submodule-pathspec-ending-with-slash'	2014-02-27 14:01:15 -08:00
resolve-undo.h	…
revision.c	Merge branch 'jc/shortlog-ref-exclude' into maint	2014-06-25 11:49:11 -07:00
revision.h	Merge branch 'jk/pack-bitmap'	2014-04-08 12:00:33 -07:00
run-command.c	commit: fix patch hunk editing with "commit -p -m"	2014-03-18 11:25:12 -07:00
run-command.h	run-command: mark run_hook_with_custom_index as deprecated	2014-03-18 11:26:12 -07:00
send-pack.c	…
send-pack.h	…
sequencer.c	…
sequencer.h	…
server-info.c	…
setup.c	Merge branch 'mw/symlinks' into maint	2014-05-28 15:45:57 -07:00
sh-i18n--envsubst.c	sh-i18n--envsubst: retire unused string_list_member()	2014-03-12 15:04:55 -07:00
sha1-array.c	…
sha1-array.h	…
sha1-lookup.c	…
sha1-lookup.h	…
sha1_file.c	Merge branch 'jk/report-fail-to-read-objects-better' into maint	2014-06-25 11:43:58 -07:00
sha1_name.c	Merge branch 'nd/log-show-linear-break'	2014-04-03 12:38:11 -07:00
shallow.c	shallow: verify shallow file after taking lock	2014-03-17 15:03:32 -07:00
shell.c	…
shortlog.h	…
show-index.c	…
sideband.c	sideband.c: do not use ANSI control sequence on non-terminal	2014-06-02 11:02:27 -07:00
sideband.h	…
sigchain.c	…
sigchain.h	…
strbuf.c	…
strbuf.h	strbuf: style fix -- top opening bracket on a separate line	2014-03-03 12:26:08 -08:00
streaming.c	open_istream(): do not dereference NULL in the error case	2014-02-18 16:00:53 -08:00
streaming.h	…
string-list.c	…
string-list.h	…
submodule.c	Merge branch 'kb/fast-hashmap'	2014-02-27 14:01:09 -08:00
submodule.h	…
symlinks.c	…
tag.c	…
tag.h	…
tar.h	…
test-chmtime.c	comments: fix misuses of "nor"	2014-03-31 15:29:27 -07:00
test-ctype.c	…
test-date.c	…
test-delta.c	…
test-dump-cache-tree.c	…
test-genrandom.c	…
test-hashmap.c	test-hashmap.c: drop unnecessary #includes	2014-02-24 14:33:46 -08:00
test-index-version.c	…
test-line-buffer.c	…
test-match-trees.c	…
test-mergesort.c	…
test-mktemp.c	…
test-parse-options.c	parse-options: remove unused OPT_SET_PTR	2014-03-31 13:01:19 -07:00
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	stop using fnmatch (either native or compat)	2014-02-20 14:16:11 -08:00
thread-utils.c	…
thread-utils.h	…
trace.c	…
transport-helper.c	Revert "Merge branch 'jc/graduate-remote-hg-bzr' (early part)"	2014-05-20 14:48:11 -07:00
transport.c	push: detect local refspec errors early	2014-03-05 13:23:27 -08:00
transport.h	…
tree-diff.c	tree-diff: convert diff_root_tree_sha1() to just call diff_tree_sha1 with old=NULL	2014-02-05 10:49:07 -08:00
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	Merge branch 'nd/i18n-progress'	2014-03-14 14:26:31 -07:00
unpack-trees.h	…
upload-pack.c	Merge branch 'nd/log-show-linear-break'	2014-04-03 12:38:11 -07:00
url.c	…
url.h	…
urlmatch.c	…
urlmatch.h	…
usage.c	…
userdiff.c	userdiff: have 'cpp' hunk header pattern catch more C++ anchor points	2014-03-21 15:03:32 -07:00
userdiff.h	…
utf8.c	Merge branch 'tb/unicode-6.3-zero-width'	2014-04-16 13:38:57 -07:00
utf8.h	…
varint.c	…
varint.h	…
version.c	…
version.h	…
versioncmp.c	tag: support --sort=<spec>	2014-02-27 14:04:05 -08:00
walker.c	object.h: centralize object flag allocation	2014-03-25 15:09:24 -07:00
walker.h	…
wildmatch.c	…
wildmatch.h	…
wrap-for-bin.sh	…
wrapper.c	read-cache.c: verify index file before we opportunistically update it	2014-04-10 12:27:58 -07:00
write_or_die.c	…
ws.c	use strchrnul() in place of strchr() and strlen()	2014-03-10 08:35:30 -07:00
wt-status.c	Merge branch 'jl/status-added-submodule-is-never-ignored' into maint	2014-06-25 11:50:03 -07:00
wt-status.h	Merge branch 'mm/status-porcelain-format-i18n-fix'	2014-03-31 16:31:25 -07:00
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.