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Ævar Arnfjörð Bjarmason 97716d217c fetch: add a --prune-tags option and fetch.pruneTags config
Add a --prune-tags option to git-fetch, along with fetch.pruneTags
config option and a -P shorthand (-p is --prune). This allows for
doing any of:

    git fetch -p -P
    git fetch --prune --prune-tags
    git fetch -p -P origin
    git fetch --prune --prune-tags origin

Or simply:

    git config fetch.prune true &&
    git config fetch.pruneTags true &&
    git fetch

Instead of the much more verbose:

    git fetch --prune origin 'refs/tags/*:refs/tags/*' '+refs/heads/*:refs/remotes/origin/*'

Before this feature it was painful to support the use-case of pulling
from a repo which is having both its branches *and* tags deleted
regularly, and have our local references to reflect upstream.

At work we create deployment tags in the repo for each rollout, and
there's *lots* of those, so they're archived within weeks for
performance reasons.

Without this change it's hard to centrally configure such repos in
/etc/gitconfig (on servers that are only used for working with
them). You need to set fetch.prune=true globally, and then for each
repo:

    git -C {} config --replace-all remote.origin.fetch "refs/tags/*:refs/tags/*" "^\+*refs/tags/\*:refs/tags/\*$"

Now I can simply set fetch.pruneTags=true in /etc/gitconfig as well,
and users running "git pull" will automatically get the pruning
semantics I want.

Even though "git remote" has corresponding "prune" and "update
--prune" subcommands I'm intentionally not adding a corresponding
prune-tags or "update --prune --prune-tags" mode to that command.

It's advertised (as noted in my recent "git remote doc: correct
dangerous lies about what prune does") as only modifying remote
tracking references, whereas any --prune-tags option is always going
to modify what from the user's perspective is a local copy of the tag,
since there's no such thing as a remote tracking tag.

Ideally add_prune_tags_to_fetch_refspec() would be something that
would use ALLOC_GROW() to grow the 'fetch` member of the 'remote'
struct. Instead I'm realloc-ing remote->fetch and adding the
tag_refspec to the end.

The reason is that parse_{fetch,push}_refspec which allocate the
refspec (ultimately remote->fetch) struct are called many places that
don't have access to a 'remote' struct. It would be hard to change all
their callsites to be amenable to carry around the bookkeeping
variables required for dynamic allocation.

All the other callers of the API first incrementally construct the
string version of the refspec in remote->fetch_refspec via
add_fetch_refspec(), before finally calling parse_fetch_refspec() via
some variation of remote_get().

It's less of a pain to deal with the one special case that needs to
modify already constructed refspecs than to chase down and change all
the other callsites. The API I'm adding is intentionally not
generalized because if we add more of these we'd probably want to
re-visit how this is done.

See my "Re: [BUG] git remote prune removes local tags, depending on
fetch config" (87po6ahx87.fsf@evledraar.gmail.com;
https://public-inbox.org/git/87po6ahx87.fsf@evledraar.gmail.com/) for
more background info.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-02-09 13:10:13 -08:00
.github
Documentation fetch: add a --prune-tags option and fetch.pruneTags config 2018-02-09 13:10:13 -08:00
block-sha1
builtin fetch: add a --prune-tags option and fetch.pruneTags config 2018-02-09 13:10:13 -08:00
ci travis-ci: check that all build artifacts are .gitignore-d 2018-01-03 13:29:19 -08:00
compat Merge branch 'bp/fsmonitor' 2017-11-21 14:07:50 +09:00
contrib fetch: add a --prune-tags option and fetch.pruneTags config 2018-02-09 13:10:13 -08:00
ewah
git-gui Merge branch 'js/misc-git-gui-stuff' of ../git-gui 2018-01-09 11:07:03 -08:00
gitk-git
gitweb
mergetools
perl Git/Packet.pm: use 'if' instead of 'unless' 2017-11-22 16:23:55 +09:00
po l10n: de.po: translate 72 new messages 2018-01-15 07:47:30 +01:00
ppc
refs Merge branch 'mh/avoid-rewriting-packed-refs' into maint 2017-12-06 09:08:50 -08:00
sha1collisiondetection@19d97bf5af
sha1dc
t fetch: add a --prune-tags option and fetch.pruneTags config 2018-02-09 13:10:13 -08:00
templates
vcs-svn
xdiff Merge branch 'jt/diff-anchored-patience' 2017-12-19 11:33:56 -08:00
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.travis.yml travis-ci: don't install default addon packages for the 32 bit Linux build 2017-12-27 12:14:39 -08:00
.tsan-suppressions
COPYING
GIT-VERSION-GEN Git 2.16.1 2018-01-21 21:14:25 -08:00
INSTALL
LGPL-2.1
Makefile Merge branch 'ab/dc-sha1-loose-ends' 2018-01-09 14:32:53 -08:00
README.md
RelNotes Git 2.16.1 2018-01-21 21:14:25 -08:00
abspath.c
aclocal.m4
advice.c Merge branch 'ls/editor-waiting-message' 2017-12-19 11:33:59 -08:00
advice.h Merge branch 'ls/editor-waiting-message' 2017-12-19 11:33:59 -08:00
alias.c
alloc.c
apply.c Merge branch 'rs/apply-inaccurate-eof-with-incomplete-line' into maint 2017-12-06 09:09:03 -08:00
apply.h
archive-tar.c
archive-zip.c
archive.c
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argv-array.c
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attr.c
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base85.c
bisect.c Merge branch 'ma/bisect-leakfix' 2018-01-10 14:01:25 -08:00
bisect.h
blame.c
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blob.c
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branch.c Merge branch 'ks/branch-cleanup' 2017-12-27 11:16:25 -08:00
branch.h Merge branch 'ks/branch-cleanup' 2017-12-27 11:16:25 -08:00
builtin.h
bulk-checkin.c
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bundle.c
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cache-tree.c
cache-tree.h
cache.h Merge branch 'ew/empty-merge-with-dirty-index-maint' into ew/empty-merge-with-dirty-index 2017-12-22 12:48:38 -08:00
check-builtins.sh
check-racy.c
check_bindir
checkout.c checkout: factor out functions to new lib file 2017-11-27 09:48:06 +09:00
checkout.h checkout: factor out functions to new lib file 2017-11-27 09:48:06 +09:00
color.c refactor "dumb" terminal determination 2017-12-04 09:38:30 -08:00
color.h
column.c
column.h
combine-diff.c
command-list.txt
commit-slab.h
commit.c
commit.h format: create pretty.h file 2017-12-12 10:39:43 -08:00
common-main.c
config.c Merge branch 'hm/config-parse-expiry-date' 2017-12-06 09:23:37 -08:00
config.h Merge branch 'hm/config-parse-expiry-date' 2017-12-06 09:23:37 -08:00
config.mak.in
config.mak.uname
configure.ac Makefile: NO_OPENSSL=1 should no longer imply BLK_SHA1=1 2017-12-28 11:55:56 -08:00
connect.c connect: correct style of C-style comment 2017-11-21 14:01:03 +09:00
connect.h
connected.c
connected.h
convert.c Merge branch 'tb/check-crlf-for-safe-crlf' 2017-12-27 11:16:21 -08:00
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
date.c
decorate.c decorate: clean up and document API 2017-12-08 09:16:27 -08:00
decorate.h decorate: clean up and document API 2017-12-08 09:16:27 -08:00
delta.h
diff-delta.c
diff-lib.c Merge branch 'bc/hash-algo' 2017-12-13 13:28:54 -08:00
diff-no-index.c
diff.c Merge branch 'cc/skip-to-optional-val' 2017-12-28 14:08:46 -08:00
diff.h diff: support anchoring line(s) 2017-11-28 10:40:04 +09:00
diffcore-break.c
diffcore-delta.c
diffcore-order.c
diffcore-pickaxe.c
diffcore-rename.c diffcore-rename: make diff-tree -l0 mean -l<large> 2017-12-02 22:16:57 -08:00
diffcore.h
dir-iterator.c
dir-iterator.h
dir.c Merge branch 'jh/object-filtering' 2017-12-27 11:16:21 -08:00
dir.h Merge branch 'jh/object-filtering' 2017-12-27 11:16:21 -08:00
editor.c launch_editor(): indicate that Git waits for user input 2017-12-07 10:10:19 -08:00
entry.c Merge branch 'bp/fsmonitor' 2017-11-21 14:07:50 +09:00
environment.c Merge branch 'ar/unconfuse-three-dots' 2017-12-19 11:33:58 -08:00
exec_cmd.c
exec_cmd.h
fast-import.c
fetch-pack.c Merge branch 'jk/fewer-pack-rescan' 2017-12-06 09:23:42 -08:00
fetch-pack.h
fmt-merge-msg.h
fsck.c
fsck.h
fsmonitor.c
fsmonitor.h
generate-cmdlist.sh generate-cmdlist: avoid non-deterministic output 2017-11-22 14:56:30 +09:00
gettext.c
gettext.h
git-add--interactive.perl
git-archimport.perl
git-bisect.sh Merge branch 'sb/bisect-run-empty' 2017-11-15 12:14:36 +09:00
git-compat-util.h git-compat-util: introduce skip_to_optional_arg() 2017-12-11 16:10:12 -08:00
git-cvsexportcommit.perl
git-cvsimport.perl cvsimport: apply shell-quoting regex globally 2017-12-08 09:02:54 -08:00
git-cvsserver.perl
git-difftool--helper.sh
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: update multiple shelved change lists 2017-12-22 13:30:52 -08:00
git-parse-remote.sh
git-quiltimport.sh
git-rebase--am.sh rebase: use mboxrd format to avoid split errors 2017-11-18 12:30:16 +09:00
git-rebase--interactive.sh Merge branch 'js/fix-merge-arg-quoting-in-rebase-p' 2018-01-10 14:01:24 -08:00
git-rebase--merge.sh
git-rebase.sh rebase: rebasing can also be done when HEAD is detached 2017-12-19 10:02:47 -08:00
git-remote-testgit.sh
git-request-pull.sh
git-send-email.perl git-send-email: honor $PATH for sendmail binary 2017-11-28 10:14:30 +09:00
git-sh-i18n.sh
git-sh-setup.sh
git-stash.sh Merge branch 'ph/stash-save-m-option-fix' 2017-12-06 09:23:43 -08:00
git-submodule.sh
git-svn.perl git-svn: convert CRLF to LF in commit message to SVN 2017-12-14 00:09:38 +00:00
git-web--browse.sh
git.c Merge branch 'ma/branch-list-paginate' 2017-11-28 13:41:50 +09:00
git.rc
gpg-interface.c
gpg-interface.h
graph.c
graph.h
grep.c Merge branch 'ab/pcre2-grep' 2017-12-13 13:28:54 -08:00
grep.h Merge branch 'ab/pcre-v2' into maint 2017-11-21 14:05:30 +09:00
hash.h
hashmap.c
hashmap.h hashmap: adjust documentation to reflect reality 2017-12-05 13:37:43 -08:00
help.c version --build-options: report commit, too, if possible 2017-12-14 22:53:04 -08:00
help.h
hex.c
http-backend.c
http-fetch.c
http-push.c
http-walker.c
http.c Merge branch 'rs/use-argv-array-in-child-process' 2018-01-05 13:28:10 -08:00
http.h
ident.c
imap-send.c imap-send: URI encode server folder 2017-12-18 13:57:06 -08:00
iterator.h
khash.h
kwset.c
kwset.h
levenshtein.c
levenshtein.h
line-log.c
line-log.h
line-range.c
line-range.h
list-objects-filter-options.c list-objects-filter-options: support --no-filter 2017-12-05 09:44:36 -08:00
list-objects-filter-options.h list-objects-filter-options: support --no-filter 2017-12-05 09:44:36 -08:00
list-objects-filter.c list-objects: filter objects in traverse_commit_list 2017-11-22 14:11:57 +09:00
list-objects-filter.h list-objects: filter objects in traverse_commit_list 2017-11-22 14:11:57 +09:00
list-objects.c Merge branch 'sb/describe-blob' 2017-12-28 14:08:50 -08:00
list-objects.h list-objects: filter objects in traverse_commit_list 2017-11-22 14:11:57 +09:00
list.h
ll-merge.c
ll-merge.h
lockfile.c
lockfile.h
log-tree.c log: add option to choose which refs to decorate 2017-11-22 13:18:59 +09:00
log-tree.h log: add option to choose which refs to decorate 2017-11-22 13:18:59 +09:00
mailinfo.c
mailinfo.h
mailmap.c
mailmap.h
match-trees.c
merge-blobs.c
merge-blobs.h
merge-recursive.c Merge branch 'ew/empty-merge-with-dirty-index-maint' into ew/empty-merge-with-dirty-index 2018-01-09 10:41:37 -08:00
merge-recursive.h
merge.c Merge branch 'ew/empty-merge-with-dirty-index-maint' into ew/empty-merge-with-dirty-index 2017-12-22 12:48:38 -08:00
mergesort.c
mergesort.h
mru.c
mru.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 list-objects: filter objects in traverse_commit_list 2017-11-22 14:11:57 +09:00
oidmap.c
oidmap.h oidmap: add oidmap iterator methods 2017-11-22 14:11:56 +09:00
oidset.c oidset: add iterator methods to oidset 2017-11-22 14:11:56 +09:00
oidset.h oidset: don't return value from oidset_init 2018-01-08 15:24:35 -08:00
pack-bitmap-write.c
pack-bitmap.c
pack-bitmap.h
pack-check.c
pack-objects.c
pack-objects.h
pack-revindex.c
pack-revindex.h
pack-write.c
pack.h
packfile.c
packfile.h
pager.c
parse-options-cb.c
parse-options.c
parse-options.h
patch-delta.c
patch-ids.c
patch-ids.h
path.c
path.h path: document path functions 2017-12-13 11:14:25 -08:00
pathspec.c
pathspec.h Merge branch 'bw/pathspec-match-submodule-boundary' 2017-12-19 11:33:56 -08:00
pkt-line.c Merge branch 'bw/protocol-v1' 2017-12-06 09:23:44 -08:00
pkt-line.h
preload-index.c
pretty.c log: add option to choose which refs to decorate 2017-11-22 13:18:59 +09:00
pretty.h format: create docs for pretty.h 2017-12-12 10:41:15 -08:00
prio-queue.c
prio-queue.h
progress.c Merge branch 'en/rename-progress' 2017-12-19 11:33:55 -08:00
progress.h progress: fix progress meters when dealing with lots of work 2017-11-15 13:11:25 +09:00
prompt.c
prompt.h
protocol.c
protocol.h
quote.c
quote.h
reachable.c
reachable.h
read-cache.c Merge branch 'tb/add-renormalize' 2017-11-27 11:06:37 +09:00
ref-filter.c Merge branch 'js/for-each-ref-remote-name-and-ref' 2017-11-15 12:14:32 +09:00
ref-filter.h
reflog-walk.c
reflog-walk.h
refs.c log: add option to choose which refs to decorate 2017-11-22 13:18:59 +09:00
refs.h log: add option to choose which refs to decorate 2017-11-22 13:18:59 +09:00
remote-curl.c
remote-testsvn.c
remote.c fetch: add a --prune-tags option and fetch.pruneTags config 2018-02-09 13:10:13 -08:00
remote.h fetch: add a --prune-tags option and fetch.pruneTags config 2018-02-09 13:10:13 -08:00
replace_object.c
repository.c repository: pre-initialize hash algo pointer 2018-01-19 14:23:32 -08:00
repository.h
rerere.c
rerere.h
resolve-undo.c
resolve-undo.h
revision.c Merge branch 'sb/describe-blob' 2017-12-28 14:08:50 -08:00
revision.h Merge branch 'sb/describe-blob' 2017-12-28 14:08:50 -08:00
run-command.c
run-command.h
send-pack.c send-pack: use internal argv_array of struct child_process 2017-12-22 13:33:53 -08:00
send-pack.h
sequencer.c sequencer: do not invent whitespace when transforming OIDs 2017-12-27 12:33:38 -08:00
sequencer.h rebase -i: learn to abbreviate command names 2017-12-05 10:20:51 -08:00
server-info.c
setup.c Merge branch 'sg/setup-doc-update' 2017-12-19 11:33:58 -08:00
sh-i18n--envsubst.c
sha1-array.c
sha1-array.h
sha1-lookup.c
sha1-lookup.h
sha1_file.c Merge branch 'ds/for-each-file-in-obj-micro-optim' 2017-12-13 13:28:57 -08:00
sha1_name.c Merge branch 'jc/branch-name-sanity' 2017-11-28 13:41:49 +09:00
sha1dc_git.c
sha1dc_git.h
shallow.c
shell.c
shortlog.h
show-index.c
sideband.c refactor "dumb" terminal determination 2017-12-04 09:38:30 -08:00
sideband.h
sigchain.c
sigchain.h
split-index.c
split-index.h
strbuf.c Merge branch 'jd/fix-strbuf-add-urlencode-bytes' 2018-01-05 13:28:10 -08:00
strbuf.h strbuf: remove unused stripspace function alias 2017-12-05 08:50:15 -08:00
streaming.c
streaming.h
string-list.c
string-list.h
sub-process.c
sub-process.h
submodule-config.c
submodule-config.h
submodule.c Merge branch 'bw/submodule-sans-cache-compat' 2017-12-27 11:16:28 -08:00
submodule.h submodule: convert get_next_submodule to not rely on the_index 2017-12-12 12:35:22 -08:00
symlinks.c
tag.c
tag.h
tar.h
tempfile.c
tempfile.h
thread-utils.c
thread-utils.h
tmp-objdir.c
tmp-objdir.h
trace.c trace: improve performance while category is disabled 2017-12-06 09:43:02 -08:00
trace.h trace: improve performance while category is disabled 2017-12-06 09:43:02 -08:00
trailer.c
trailer.h
transport-helper.c Merge branch 'jt/transport-hide-vtable' 2017-12-28 14:08:47 -08:00
transport-internal.h transport: make transport vtable more private 2017-12-14 14:28:04 -08:00
transport.c Merge branch 'jt/transport-hide-vtable' 2017-12-28 14:08:47 -08:00
transport.h transport: make transport vtable more private 2017-12-14 14:28:04 -08:00
tree-diff.c
tree-walk.c Merge branch 'bw/pathspec-match-submodule-boundary' 2017-12-19 11:33:56 -08:00
tree-walk.h
tree.c
tree.h
unicode_width.h
unimplemented.sh
unix-socket.c
unix-socket.h
unpack-trees.c Merge branch 'bp/fsmonitor' 2017-11-21 14:07:50 +09:00
unpack-trees.h
upload-pack.c Merge branch 'bw/protocol-v1' 2017-12-06 09:23:44 -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 --build-options: report commit, too, if possible 2017-12-14 22:53:04 -08:00
version.h version --build-options: report commit, too, if possible 2017-12-14 22:53:04 -08:00
versioncmp.c
walker.c
walker.h
wildmatch.c
wildmatch.h
worktree.c
worktree.h
wrap-for-bin.sh
wrapper.c
write_or_die.c
ws.c
wt-status.c Merge branch 'bw/rebase-i-ignored-submodule-fix' into maint 2017-11-21 14:05:29 +09:00
wt-status.h
xdiff-interface.c
xdiff-interface.h
zlib.c

README.md

Git - fast, scalable, distributed revision control system

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.

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

See Documentation/gittutorial.txt to get started, then see Documentation/giteveryday.txt for a useful minimum set of commands, and Documentation/git-.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).

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 https://public-inbox.org/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.

The name "git" was given by Linus Torvalds when he wrote the very first version. He described the tool as "the stupid content tracker" and the name as (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