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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
..
howto doc: use https links to avoid http redirect 2017-04-20 22:05:37 -07:00
RelNotes Git 2.16.1 2018-01-21 21:14:25 -08:00
technical Merge branch 'jh/partial-clone-doc' 2017-12-28 14:08:47 -08:00
.gitattributes
.gitignore Documentation: convert SubmittingPatches to AsciiDoc 2017-11-13 13:25:19 +09:00
asciidoc.conf
asciidoctor-extensions.rb Documentation: implement linkgit macro for Asciidoctor 2017-01-31 12:18:18 -08:00
blame-options.txt Merge branch 'bc/blame-doc-fix' 2017-02-24 10:48:08 -08:00
build-docdep.perl
cat-texi.perl Documentation: remove unneeded argument in cat-texi.perl 2017-01-23 10:56:47 -08:00
cmd-list.perl command-list: prepare machinery for upcoming "common groups" section 2015-05-21 13:03:37 -07:00
CodingGuidelines Merge branch 'ab/c-translators-comment-style' into maint 2017-06-05 09:03:10 +09:00
config.txt fetch: add a --prune-tags option and fetch.pruneTags config 2018-02-09 13:10:13 -08:00
date-formats.txt Merge branch 'lr/doc-fix-cet' into maint 2017-01-17 15:19:08 -08:00
diff-config.txt doc: add missing values "none" and "default" for diff.wsErrorHighlight 2017-07-25 14:30:49 -07:00
diff-format.txt Documentation: improve description for core.quotePath 2017-03-02 11:40:51 -08:00
diff-generate-patch.txt Documentation: improve description for core.quotePath 2017-03-02 11:40:51 -08:00
diff-options.txt Merge branch 'jk/doc-diff-options' 2018-01-09 14:32:57 -08:00
docbook-xsl.css
docbook.xsl
everyday.txto Documentation: fix linkgit references 2016-05-09 15:44:14 -07:00
fetch-options.txt fetch: add a --prune-tags option and fetch.pruneTags config 2018-02-09 13:10:13 -08:00
fix-texi.perl
fmt-merge-msg-config.txt Documentation: include 'merge.branchdesc' for merge and config as well 2015-05-28 12:38:46 -07:00
git-add.txt add: introduce "--renormalize" 2017-11-17 10:31:05 +09:00
git-am.txt Merge branch 'mm/doc-tt' 2016-07-13 11:24:14 -07:00
git-annotate.txt diff: --indent-heuristic is no longer experimental 2017-11-02 14:51:24 +09:00
git-apply.txt treewide: correct several "up-to-date" to "up to date" 2017-08-23 12:17:22 -07:00
git-archimport.txt docs/archimport: quote sourcecontrol.net reference 2017-04-20 22:05:38 -07:00
git-archive.txt
git-bisect-lk2009.txt doc: replace more gmane links 2017-05-09 21:13:13 -07:00
git-bisect.txt bisect: mention "view" as an alternative to "visualize" 2017-11-13 10:51:14 +09:00
git-blame.txt diff: --indent-heuristic is no longer experimental 2017-11-02 14:51:24 +09:00
git-branch.txt Merge branch 'tz/branch-doc-remove-set-upstream' 2017-12-06 09:23:36 -08:00
git-bundle.txt transport: drop support for git-over-rsync 2016-02-01 13:07:41 -08:00
git-cat-file.txt doc: fix minor typos (extra/duplicated words) 2017-09-14 15:09:02 +09:00
git-check-attr.txt usage: do not insist that standard input must come from a file 2015-10-16 15:27:52 -07:00
git-check-ignore.txt Documentation: fix linkgit references 2016-05-09 15:44:14 -07:00
git-check-mailmap.txt
git-check-ref-format.txt Doc/check-ref-format: clarify information about @{-N} syntax 2017-12-19 10:00:45 -08:00
git-checkout-index.txt
git-checkout.txt Merge branch 'ks/doc-checkout-previous' 2017-12-13 13:28:57 -08:00
git-cherry-pick.txt Merge branch 'mm/doc-tt' into maint 2016-07-28 11:25:54 -07:00
git-cherry.txt
git-citool.txt
git-clean.txt doc: typeset short command-line options as literal 2016-06-28 08:20:52 -07:00
git-clone.txt Documentation/git-clone: improve description for submodule recursing 2017-12-05 11:30:38 -08:00
git-column.txt
git-commit-tree.txt Merge branch 'mm/doc-tt' into maint 2016-07-28 11:25:54 -07:00
git-commit.txt doc: reformat the paragraph containing the 'cut-line' 2017-07-18 15:04:49 -07:00
git-config.txt config: add --expiry-date 2017-11-18 12:31:29 +09:00
git-count-objects.txt count-objects: report alternates via verbose mode 2016-10-10 13:52:37 -07:00
git-credential-cache--daemon.txt credential-cache: close stderr in daemon process 2014-09-16 11:11:58 -07:00
git-credential-cache.txt credential-cache: use XDG_CACHE_HOME for socket 2017-03-17 11:19:40 -07:00
git-credential-store.txt doc: typeset long command-line options as literal 2016-06-28 08:36:45 -07:00
git-credential.txt
git-cvsexportcommit.txt
git-cvsimport.txt Merge branch 'jk/doc-cvs-update' into maint 2016-10-03 13:22:25 -07:00
git-cvsserver.txt treewide: correct several "up-to-date" to "up to date" 2017-08-23 12:17:22 -07:00
git-daemon.txt doc: typeset HEAD and variants as literal 2016-06-28 08:36:45 -07:00
git-describe.txt builtin/describe.c: describe a blob 2017-12-19 11:17:16 -08:00
git-diff-files.txt
git-diff-index.txt treewide: correct several "up-to-date" to "up to date" 2017-08-23 12:17:22 -07:00
git-diff-tree.txt doc: typeset long command-line options as literal 2016-06-28 08:36:45 -07:00
git-diff.txt diff-files: document --ours etc. 2017-04-13 16:15:25 -07:00
git-difftool.txt Document the --no-gui option in difftool 2017-02-08 13:30:28 -08:00
git-fast-export.txt doc: convert \--option to --option 2015-05-12 22:14:46 -07:00
git-fast-import.txt fast-import: increase the default pack depth to 50 2017-06-12 09:50:33 -07:00
git-fetch-pack.txt upload-pack: optionally allow fetching any sha1 2016-11-18 13:06:14 -08:00
git-fetch.txt fetch: add a --prune-tags option and fetch.pruneTags config 2018-02-09 13:10:13 -08:00
git-filter-branch.txt Merge branch 'dg/filter-branch-filter-order-doc' 2017-10-19 14:45:45 +09:00
git-fmt-merge-msg.txt Documentation/fmt-merge-msg: fix markup in example 2016-10-28 05:51:51 -07:00
git-for-each-ref.txt Merge branch 'js/for-each-ref-remote-name-and-ref' 2017-11-15 12:14:32 +09:00
git-format-patch.txt format-patch: have progress option while generating patches 2017-08-14 14:09:45 -07:00
git-fsck-objects.txt
git-fsck.txt fsck: optionally show more helpful info for broken links 2016-07-18 15:15:59 -07:00
git-gc.txt docs/git-gc: fix default value for --aggressiveDepth 2017-02-24 09:59:12 -08:00
git-get-tar-commit-id.txt usage: do not insist that standard input must come from a file 2015-10-16 15:27:52 -07:00
git-grep.txt Merge branch 'mr/doc-negative-pathspec' into maint 2017-10-18 14:19:12 +09:00
git-gui.txt doc: git-gui browser does not default to HEAD 2017-01-13 12:23:28 -08:00
git-hash-object.txt usage: do not insist that standard input must come from a file 2015-10-16 15:27:52 -07:00
git-help.txt doc: typeset long command-line options as literal 2016-06-28 08:36:45 -07:00
git-http-backend.txt doc: more consistency in environment variables format 2016-06-08 12:04:37 -07:00
git-http-fetch.txt
git-http-push.txt doc: typeset long command-line options as literal 2016-06-28 08:36:45 -07:00
git-imap-send.txt imap-send: use cURL automatically when NO_OPENSSL defined 2015-03-10 15:19:05 -07:00
git-index-pack.txt index-pack: add --max-input-size=<size> option 2016-08-24 12:31:05 -07:00
git-init-db.txt
git-init.txt init: document dotfiles exclusion on template copy 2017-02-17 15:57:21 -08:00
git-instaweb.txt doc: change configuration variables format 2016-06-08 12:04:55 -07:00
git-interpret-trailers.txt Merge branch 'jk/trailers-parse' 2017-08-26 22:55:04 -07:00
git-log.txt log: add option to choose which refs to decorate 2017-11-22 13:18:59 +09:00
git-ls-files.txt fsmonitor: add documentation for the fsmonitor extension. 2017-10-01 17:23:05 +09:00
git-ls-remote.txt ls-remote: add support for showing symrefs 2016-01-19 10:07:56 -08:00
git-ls-tree.txt Documentation: improve description for core.quotePath 2017-03-02 11:40:51 -08:00
git-mailinfo.txt Merge branch 'va/mailinfo-doc-typofix' into maint 2016-05-26 13:17:14 -07:00
git-mailsplit.txt mailsplit: support unescaping mboxrd messages 2016-06-06 11:14:43 -07:00
git-merge-base.txt merge-base --fork-point doc: clarify the example and failure modes 2017-11-09 12:28:30 +09:00
git-merge-file.txt merge-file: clamp exit code to maximum 127 2015-10-29 12:10:23 -07:00
git-merge-index.txt
git-merge-one-file.txt
git-merge-tree.txt
git-merge.txt Merge branch 'wk/pull-signoff' 2017-11-06 14:24:24 +09:00
git-mergetool--lib.txt
git-mergetool.txt mergetool: honor -O<orderfile> 2016-10-11 10:04:31 -07:00
git-mktag.txt usage: do not insist that standard input must come from a file 2015-10-16 15:27:52 -07:00
git-mktree.txt doc: typeset short command-line options as literal 2016-06-28 08:20:52 -07:00
git-mv.txt doc: typeset short command-line options as literal 2016-06-28 08:20:52 -07:00
git-name-rev.txt name-rev: add support to exclude refs by pattern match 2017-01-23 18:33:17 -08:00
git-notes.txt Merge branch 'rd/doc-notes-prune-fix' 2017-12-06 09:23:40 -08:00
git-p4.txt git-p4: update multiple shelved change lists 2017-12-22 13:30:52 -08:00
git-pack-objects.txt list-objects-filter-options: support --no-filter 2017-12-05 09:44:36 -08:00
git-pack-redundant.txt
git-pack-refs.txt
git-parse-remote.txt
git-patch-id.txt doc: remove unsupported parameter from patch-id 2017-07-28 14:41:32 -07:00
git-prune-packed.txt Documentation: adjust document title underlining 2014-10-13 13:35:18 -07:00
git-prune.txt prune: add "--progress" to man page and usage msg 2017-11-22 12:29:30 +09:00
git-pull.txt Merge branch 'sb/pull-rebase-submodule' 2017-07-13 16:14:54 -07:00
git-push.txt builtin/push.c: add push.pushOption config 2017-10-24 09:57:54 +09:00
git-quiltimport.txt doc: more consistency in environment variables format 2016-06-08 12:04:37 -07:00
git-read-tree.txt Merge branch 'jk/doc-read-tree-table-asciidoctor-fix' into maint 2017-10-18 14:19:11 +09:00
git-rebase.txt Documentation: move rebase.* configs to new file 2017-12-04 09:02:21 -08:00
git-receive-pack.txt refs: reject ref updates while GIT_QUARANTINE_PATH is set 2017-04-16 18:19:18 -07:00
git-reflog.txt doc: add missing "-n" (dry-run) option to reflog man page 2017-11-22 12:24:47 +09:00
git-remote-ext.txt doc: add some crossrefs between manual pages 2014-11-11 14:47:04 -08:00
git-remote-fd.txt Spelling fixes 2016-08-11 14:35:42 -07:00
git-remote-helpers.txto
git-remote-testgit.txt
git-remote.txt git remote doc: correct dangerous lies about what prune does 2018-02-09 13:10:12 -08:00
git-repack.txt repack: accept --threads=<n> and pass it down to pack-objects 2017-04-27 08:09:25 +09:00
git-replace.txt doc: change environment variables format 2016-06-08 12:04:37 -07:00
git-request-pull.txt doc: show usage of branch description 2015-09-14 12:50:33 -07:00
git-rerere.txt treewide: correct several "up-to-date" to "up to date" 2017-08-23 12:17:22 -07:00
git-reset.txt Spelling fixes 2017-06-27 10:35:49 -07:00
git-rev-list.txt rev-list: add list-objects filtering support 2017-11-22 14:11:57 +09:00
git-rev-parse.txt Merge branch 'sb/rev-parse-show-superproject-root' 2017-10-28 10:18:40 +09:00
git-revert.txt doc: typeset long command-line options as literal 2016-06-28 08:36:45 -07:00
git-rm.txt treewide: correct several "up-to-date" to "up to date" 2017-08-23 12:17:22 -07:00
git-send-email.txt git-send-email: honor $PATH for sendmail binary 2017-11-28 10:14:30 +09:00
git-send-pack.txt Merge branch 'ma/parse-maybe-bool' 2017-08-22 10:29:03 -07:00
git-sh-i18n--envsubst.txt
git-sh-i18n.txt
git-sh-setup.txt doc: more consistency in environment variables format 2016-06-08 12:04:37 -07:00
git-shell.txt shell: drop git-cvsserver support by default 2017-09-12 11:05:58 +09:00
git-shortlog.txt shortlog: test and document --committer option 2016-12-16 09:39:10 -08:00
git-show-branch.txt doc: typeset long command-line options as literal 2016-06-28 08:36:45 -07:00
git-show-index.txt usage: do not insist that standard input must come from a file 2015-10-16 15:27:52 -07:00
git-show-ref.txt doc: typeset long command-line options as literal 2016-06-28 08:36:45 -07:00
git-show.txt doc: convert \--option to --option 2015-05-12 22:14:46 -07:00
git-stage.txt Documentation: adjust document title underlining 2014-10-13 13:35:18 -07:00
git-stash.txt doc: prefer 'stash push' over 'stash save' 2017-11-22 13:40:25 +09:00
git-status.txt Merge branch 'jk/no-optional-locks' 2017-12-13 13:28:58 -08:00
git-stripspace.txt usage: do not insist that standard input must come from a file 2015-10-16 15:27:52 -07:00
git-submodule.txt Merge branch 'sb/submodule-doc' 2017-07-12 15:18:21 -07:00
git-svn.txt treewide: correct several "up-to-date" to "up to date" 2017-08-23 12:17:22 -07:00
git-symbolic-ref.txt
git-tag.txt Merge branch 'jk/ref-filter-colors-fix' into maint 2017-10-18 14:20:43 +09:00
git-tools.txt doc: replace or.cz gitwiki link with git.wiki.kernel.org 2017-04-20 22:05:37 -07:00
git-unpack-file.txt
git-unpack-objects.txt unpack-objects: add --max-input-size=<size> option 2016-08-24 12:31:05 -07:00
git-update-index.txt Merge branch 'bp/fsmonitor' 2017-11-21 14:07:50 +09:00
git-update-ref.txt update-ref and tag: add --create-reflog arg 2015-07-21 14:08:35 -07:00
git-update-server-info.txt
git-upload-archive.txt Documentation: match underline with the text 2015-10-22 10:16:12 -07:00
git-upload-pack.txt upload-pack.c: use parse-options API 2016-05-31 10:17:20 -07:00
git-var.txt
git-verify-commit.txt Merge branch 'dn/gpg-doc' into maint 2016-07-06 13:06:36 -07:00
git-verify-pack.txt git-verify-pack.txt: fix inconsistent spelling of "packfile" 2015-05-17 11:24:57 -07:00
git-verify-tag.txt builtin/verify-tag: add --format to verify-tag 2017-01-17 16:10:22 -08:00
git-web--browse.txt doc: typeset long command-line options as literal 2016-06-28 08:36:45 -07:00
git-whatchanged.txt
git-worktree.txt Documentation/git-worktree.txt: add missing ` 2018-01-11 12:19:40 -08:00
git-write-tree.txt
git.txt Merge branch 'ar/unconfuse-three-dots' 2017-12-19 11:33:58 -08:00
gitattributes.txt add: introduce "--renormalize" 2017-11-17 10:31:05 +09:00
gitcli.txt stash: update documentation to use 'stash entry' 2017-06-18 22:16:36 -07:00
gitcore-tutorial.txt treewide: correct several "up-to-date" to "up to date" 2017-08-23 12:17:22 -07:00
gitcredentials.txt credential doc: make multiple-helper behavior more prominent 2017-05-02 10:58:06 +09:00
gitcvs-migration.txt Merge branch 'sb/doc-unify-bottom' 2017-02-15 12:54:20 -08:00
gitdiffcore.txt docs/diffcore: unquote "Complete Rewrites" in headers 2017-02-28 11:34:38 -08:00
giteveryday.txt giteveryday: unbreak rendering with AsciiDoctor 2017-01-07 14:03:40 -08:00
gitglossary.txt Documentation: unify bottom "part of git suite" lines 2017-02-09 15:14:01 -08:00
githooks.txt Merge branch 'es/worktree-checkout-hook' 2017-12-27 11:16:21 -08:00
gitignore.txt doc: change configuration variables format 2016-06-08 12:04:55 -07:00
gitk.txt Merge branch 'sb/remove-gitview' 2017-01-18 15:12:18 -08:00
gitmodules.txt Merge branch 'ss/submodule-shallow-doc' 2017-04-26 15:39:07 +09:00
gitnamespaces.txt doc: mention transfer data leaks in more places 2016-11-14 11:23:07 -08:00
gitremote-helpers.txt fix minor typos 2017-05-01 11:01:52 +09:00
gitrepository-layout.txt Merge branch 'sp/doc-info-attributes' 2017-12-06 09:23:43 -08:00
gitrevisions.txt doc: gitrevisions - clarify 'latter case' is revision walk 2016-08-13 19:36:44 -07:00
gitsubmodules.txt submodules: overhaul documentation 2017-06-22 15:25:25 -07:00
gittutorial-2.txt Documentation: unify bottom "part of git suite" lines 2017-02-09 15:14:01 -08:00
gittutorial.txt treewide: correct several "up-to-date" to "up to date" 2017-08-23 12:17:22 -07:00
gitweb.conf.txt doc: use https links to avoid http redirect 2017-04-20 22:05:37 -07:00
gitweb.txt doc: use https links to Wikipedia to avoid http redirects 2017-05-15 13:04:54 +09:00
gitworkflows.txt Merge branch 'db/doc-workflows-neuter-the-maintainer' 2017-12-27 11:16:25 -08:00
glossary-content.txt Merge branch 'mr/doc-negative-pathspec' into maint 2017-10-18 14:19:12 +09:00
howto-index.sh howto-index.sh: use the $( ... ) construct for command substitution 2014-04-17 11:14:57 -07:00
i18n.txt doc: camelCase the i18n config variables to improve readability 2017-07-17 15:11:26 -07:00
install-doc-quick.sh install-doc-quick: allow specifying what ref to install 2017-12-12 16:49:40 -08:00
install-webdoc.sh install-webdoc.sh: use the $( ... ) construct for command substitution 2014-04-17 11:14:58 -07:00
line-range-format.txt Documentation: change -L:<regex> to -L:<funcname> 2015-04-20 11:05:50 -07:00
lint-gitlink.perl ci: validate "linkgit:" in documentation 2016-05-10 11:15:04 -07:00
mailmap.txt
Makefile install-doc-quick: allow specifying what ref to install 2017-12-12 16:49:40 -08:00
manpage-1.72.xsl
manpage-base-url.xsl.in
manpage-base.xsl
manpage-bold-literal.xsl
manpage-normal.xsl
manpage-quote-apos.xsl
manpage-suppress-sp.xsl
merge-config.txt merge: add config option for verifySignatures 2017-12-12 10:51:38 -08:00
merge-options.txt Merge branch 'wk/pull-signoff' 2017-11-06 14:24:24 +09:00
merge-strategies.txt Merge branch 'jc/ignore-cr-at-eol' 2017-11-27 11:06:31 +09:00
pretty-formats.txt docs/pretty-formats: mention commas in %(trailers) syntax 2017-12-08 09:00:45 -08:00
pretty-options.txt Merge branch 'tr/doc-tt' into maint 2016-07-06 13:06:34 -07:00
pull-fetch-param.txt fetch doc: src side of refspec could be full SHA-1 2017-10-18 05:59:34 +09:00
rebase-config.txt rebase -i: learn to abbreviate command names 2017-12-05 10:20:51 -08:00
rev-list-options.txt Merge branch 'sb/describe-blob' 2017-12-28 14:08:50 -08:00
revisions.txt Documentation: revisions: fix typo: "three dot" ---> "three-dot" (in line with "two-dot"). 2017-12-04 08:25:06 -08:00
sequencer.txt
SubmittingPatches Merge branch 'bc/submitting-patches-in-asciidoc' 2018-01-09 14:32:54 -08:00
texi.xsl Documentation: add XSLT to fix DocBook for Texinfo 2017-01-23 10:56:53 -08:00
transfer-data-leaks.txt doc: mention transfer data leaks in more places 2016-11-14 11:23:07 -08:00
urls-remotes.txt Documentation: match underline with the text 2015-10-22 10:16:12 -07:00
urls.txt transport: drop support for git-over-rsync 2016-02-01 13:07:41 -08:00
user-manual.conf
user-manual.txt checkout: describe_detached_head: remove ellipsis after committish 2017-12-06 07:32:40 -08:00