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Derrick Stolee 2e03115d0c fetch: add --prefetch option 
The --prefetch option will be used by the 'prefetch' maintenance task
instead of sending refspecs explicitly across the command-line. The
intention is to modify the refspec to place all results in
refs/prefetch/ instead of anywhere else.

Create helper method filter_prefetch_refspec() to modify a given refspec
to fit the rules expected of the prefetch task:

 * Negative refspecs are preserved.
 * Refspecs without a destination are removed.
 * Refspecs whose source starts with "refs/tags/" are removed.
 * Other refspecs are placed within "refs/prefetch/".

Finally, we add the 'force' option to ensure that prefetch refs are
replaced as necessary.

There are some interesting cases that are worth testing.

An earlier version of this change dropped the "i--" from the loop that
deletes a refspec item and shifts the remaining entries down. This
allowed some refspecs to not be modified. The subtle part about the
first --prefetch test is that the "refs/tags/*" refspec appears directly
before the "refs/heads/bogus/*" refspec. Without that "i--", this
ordering would remove the "refs/tags/*" refspec and leave the last one
unmodified, placing the result in "refs/heads/*".

It is possible to have an empty refspec. This is typically the case for
remotes other than the origin, where users want to fetch a specific tag
or branch. To correctly test this case, we need to further remove the
upstream remote for the local branch. Thus, we are testing a refspec
that will be deleted, leaving nothing to fetch.

Helped-by: Tom Saeger <tom.saeger@oracle.com>
Helped-by: Ramsay Jones <ramsay@ramsayjones.plus.com>
Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-04-16 13:36:55 -07:00
..
config Merge branch 'jn/mergetool-hideresolved-is-optional' 2021-03-14 16:01:41 -07:00
howto Merge branch 'js/pu-to-seen' 2020-07-06 22:09:16 -07:00
RelNotes Git 2.31.1 2021-03-26 14:49:41 -07:00
technical Merge branch 'hn/reftable-tables-doc-update' 2021-03-01 14:02:57 -08:00
.gitattributes
.gitignore
asciidoc.conf Doc: drop support for docbook-xsl before 1.72.0 2020-03-29 09:25:38 -07:00
asciidoctor-extensions.rb Merge branch 'ma/user-manual-markup-update' 2019-10-06 12:25:16 +09:00
blame-options.txt blame-options.txt: camelcase blame.blankBoundary 2021-02-24 15:21:25 -08:00
build-docdep.perl
cat-texi.perl
cmd-list.perl git.txt: add list of guides 2020-08-04 18:34:02 -07:00
CodingGuidelines Merge branch 'dl/python-2.7-is-the-floor-version' 2020-06-17 21:54:05 -07:00
config.txt Merge branch 'km/config-doc-typofix' 2021-03-19 15:25:38 -07:00
date-formats.txt doc: mention approxidates for git-commit --date 2021-02-23 13:33:02 -08:00
diff-format.txt doc: indent multi-line items in list 2019-12-13 12:18:07 -08:00
diff-generate-patch.txt doc/diff-generate-patch: mention new --diff-merges option 2020-12-21 13:47:32 -08:00
diff-options.txt diff: --{rotate,skip}-to=<path> 2021-02-16 09:30:42 -08:00
doc-diff doc-diff: use single-colon rule in rendering Makefile 2020-02-18 13:53:30 -08:00
docbook-xsl.css
docbook.xsl
everyday.txto
fetch-options.txt fetch: add --prefetch option 2021-04-16 13:36:55 -07:00
fix-texi.perl
git-add.txt add: support the --pathspec-from-file option 2019-12-04 10:10:37 -08:00
git-am.txt i18n.txt: camel case and monospace "i18n.commitEncoding" 2021-02-24 15:21:25 -08:00
git-annotate.txt
git-apply.txt git-apply.txt: update descriptions of --cached, --index 2020-08-20 16:34:37 -07:00
git-archimport.txt
git-archive.txt archive: add --add-file 2020-09-19 15:56:06 -07:00
git-bisect-lk2009.txt git-bisect-lk2009: make continuation of list indented 2020-10-08 14:01:15 -07:00
git-bisect.txt bisect: swap command-line options in documentation 2020-08-28 14:06:06 -07:00
git-blame.txt mailmap doc: create a new "gitmailmap(5)" man page 2021-01-12 14:04:39 -08:00
git-branch.txt Merge branch 'jc/maint-column-doc-typofix' 2021-02-25 16:43:30 -08:00
git-bugreport.txt Merge branch 'es/bugreport-shell' 2020-06-08 18:06:28 -07:00
git-bundle.txt bundle: add new version for use with SHA-256 2020-07-30 09:16:48 -07:00
git-cat-file.txt cat-file: add missing [=<format>] to usage/synopsis 2020-07-01 15:54:05 -07:00
git-check-attr.txt Documentation: fix a bunch of typos, both old and new 2019-11-07 13:42:00 +09:00
git-check-ignore.txt Merge branch 'en/check-ignore' into maint 2020-03-17 15:02:23 -07:00
git-check-mailmap.txt check-mailmap doc: note config options 2021-01-12 14:04:40 -08:00
git-check-ref-format.txt
git-checkout-index.txt
git-checkout.txt Merge branch 'dl/checkout-guess' 2020-10-27 15:09:51 -07:00
git-cherry-pick.txt Documentation: stylistically normalize references to Signed-off-by: 2020-10-20 11:57:40 -07:00
git-cherry.txt
git-citool.txt
git-clean.txt Merge branch 'en/clean-nested-with-ignored' 2019-10-11 14:24:46 +09:00
git-clone.txt Documentation/git-clone.txt: document race with --local 2021-01-11 22:03:08 -08:00
git-column.txt
git-commit-graph.txt Merge branch 'ds/commit-graph-merging-fix' 2020-11-02 13:17:39 -08:00
git-commit-tree.txt Documentation: merge commit-tree --[no-]gpg-sign 2020-04-03 11:37:22 -07:00
git-commit.txt doc: preparatory clean-up of description on the sign-off option 2020-10-20 11:57:35 -07:00
git-config.txt Merge branch 'ps/config-env-pairs' 2021-01-25 14:19:19 -08:00
git-count-objects.txt
git-credential-cache--daemon.txt
git-credential-cache.txt
git-credential-store.txt Merge branch 'cb/credential-store-ignore-bogus-lines' 2020-05-08 14:25:01 -07:00
git-credential.txt git-credential.txt: use list continuation 2020-05-18 13:19:33 -07:00
git-cvsexportcommit.txt
git-cvsimport.txt
git-cvsserver.txt Documentation: fix a bunch of typos, both old and new 2019-11-07 13:42:00 +09:00
git-daemon.txt
git-describe.txt
git-diff-files.txt
git-diff-index.txt builtin/diff-index: learn --merge-base 2020-09-20 21:30:26 -07:00
git-diff-tree.txt builtin/diff-tree: learn --merge-base 2020-09-21 13:37:03 -07:00
git-diff.txt builtin/diff-tree: learn --merge-base 2020-09-21 13:37:03 -07:00
git-difftool.txt difftool.c: learn a new way start at specified file 2021-02-22 13:35:49 -08:00
git-fast-export.txt fast-export: allow seeding the anonymized mapping 2020-06-25 14:19:23 -07:00
git-fast-import.txt fast-import: fix typo in documentation 2020-10-04 12:56:29 -07:00
git-fetch-pack.txt
git-fetch.txt fetch: allow refspecs specified through stdin 2020-08-18 13:25:05 -07:00
git-filter-branch.txt filter-branch doc: fix filter-repo typo 2020-10-20 12:22:25 -07:00
git-fmt-merge-msg.txt
git-for-each-ref.txt ref-filter: use pretty.c logic for trailers 2021-02-15 16:48:38 -08:00
git-for-each-repo.txt for-each-repo: run subcommands on configured repos 2020-09-25 10:59:44 -07:00
git-format-patch.txt Merge branch 'jc/format-patch-name-max' 2020-11-21 15:14:38 -08:00
git-fsck-objects.txt
git-fsck.txt fsck doc: remove ancient out-of-date diagnostics 2021-01-20 19:10:42 -08:00
git-gc.txt docs: clarify that refs/notes/ do not keep the attached objects alive 2021-02-10 23:43:55 -08:00
git-get-tar-commit-id.txt
git-grep.txt doc: add more pointers to gitattributes(5) for userdiff 2020-11-01 15:54:14 -08:00
git-gui.txt Documentation: update the location of the git-gui repo 2019-10-06 09:45:02 +09:00
git-hash-object.txt
git-help.txt help: drop usage of 'common' and 'useful' for guides 2020-08-04 18:34:01 -07:00
git-http-backend.txt
git-http-fetch.txt http-fetch: allow custom index-pack args 2021-02-22 12:07:40 -08:00
git-http-push.txt
git-imap-send.txt git-imap-send.txt: add note about localized Gmail folders 2020-08-31 11:44:33 -07:00
git-index-pack.txt Merge branch 'jt/transfer-fsck-across-packs' 2021-03-01 14:02:57 -08:00
git-init-db.txt
git-init.txt init: document init.defaultBranch better 2020-12-13 15:53:50 -08:00
git-instaweb.txt
git-interpret-trailers.txt
git-log.txt Merge branch 'so/log-diff-merge' 2021-02-05 16:40:44 -08:00
git-ls-files.txt ls-files.c: add --deduplicate option 2021-01-23 11:48:20 -08:00
git-ls-remote.txt docs: adjust for the recent rename of pu to seen 2020-06-25 09:18:53 -07:00
git-ls-tree.txt doc: clarify that --abbrev=<n> is about the minimum length 2020-11-04 14:04:44 -08:00
git-mailinfo.txt i18n.txt: camel case and monospace "i18n.commitEncoding" 2021-02-24 15:21:25 -08:00
git-mailsplit.txt
git-maintenance.txt maintenance: add pack-refs task 2021-02-09 23:09:24 -08:00
git-merge-base.txt git-merge-base.txt: render indentations correctly under Asciidoctor 2019-09-09 11:05:51 -07:00
git-merge-file.txt
git-merge-index.txt git-merge-index.txt: wrap shell listing in "----" 2019-09-09 11:05:52 -07:00
git-merge-one-file.txt
git-merge-tree.txt
git-merge.txt Doc: reference the "stash list" in autostash docs 2020-05-05 16:07:30 -07:00
git-mergetool--lib.txt mergetool: break setup_tool out into separate initialization function 2021-02-09 14:09:16 -08:00
git-mergetool.txt doc: describe mergetool configuration in git-mergetool(1) 2021-03-13 15:34:32 -08:00
git-mktag.txt mktag: add a --[no-]strict option 2021-01-06 14:22:24 -08:00
git-mktree.txt
git-multi-pack-index.txt multi-pack-index: repack batches below --batch-size 2020-08-11 14:05:26 -07:00
git-mv.txt
git-name-rev.txt
git-notes.txt docs: improve the example that illustrates git-notes path names 2020-08-03 12:40:09 -07:00
git-p4.txt doc: fix some typos 2021-01-04 11:27:48 -08:00
git-pack-objects.txt doc: mention bigFileThreshold for packing 2021-02-22 13:18:30 -08:00
git-pack-redundant.txt
git-pack-refs.txt
git-patch-id.txt
git-prune-packed.txt
git-prune.txt
git-pull.txt Merge branch 'dl/merge-autostash' 2020-04-29 16:15:27 -07:00
git-push.txt t, doc: update tests, reference for "--force-if-includes" 2020-10-03 09:59:19 -07:00
git-quiltimport.txt
git-range-diff.txt Merge branch 'js/range-diff-one-side-only' 2021-02-17 17:21:41 -08:00
git-read-tree.txt doc: --recurse-submodules mostly applies to active submodules 2020-04-06 13:42:43 -07:00
git-rebase.txt Documentation: stylistically normalize references to Signed-off-by: 2020-10-20 11:57:40 -07:00
git-receive-pack.txt git-receive-pack.txt: wrap shell [script] listing in "----" 2019-09-09 11:05:52 -07:00
git-reflog.txt
git-remote-ext.txt
git-remote-fd.txt
git-remote-helpers.txto
git-remote.txt remote: add meaningful exit code on missing/existing 2020-10-27 11:40:33 -07:00
git-repack.txt doc: mention bigFileThreshold for packing 2021-02-22 13:18:30 -08:00
git-replace.txt Recommend git-filter-repo instead of git-filter-branch 2019-09-05 13:01:48 -07:00
git-request-pull.txt
git-rerere.txt
git-reset.txt doc: document --recurse-submodules for reset and restore 2020-04-06 13:42:43 -07:00
git-restore.txt Doc: document "A...B" form for <tree-ish> in checkout and switch 2020-10-07 09:49:05 -07:00
git-rev-list.txt docs/rev-list: add some examples of --disk-usage 2021-02-17 16:25:29 -08:00
git-rev-parse.txt rev-parse: add option for absolute or relative path formatting 2020-12-12 23:35:51 -08:00
git-revert.txt Documentation: stylistically normalize references to Signed-off-by: 2020-10-20 11:57:40 -07:00
git-rm.txt rm: support the --pathspec-from-file option 2020-02-19 10:56:49 -08:00
git-send-email.txt Merge branch 'vv/send-email-with-less-secure-apps-access' into maint 2021-02-05 16:31:25 -08:00
git-send-pack.txt
git-sh-i18n--envsubst.txt
git-sh-i18n.txt
git-sh-setup.txt
git-shell.txt
git-shortlog.txt mailmap: only look for .mailmap in work tree 2021-02-10 13:34:51 -08:00
git-show-branch.txt
git-show-index.txt Documentation: mark --object-format=sha256 as experimental 2020-08-17 10:50:14 -07:00
git-show-ref.txt
git-show.txt doc/git-show: include --diff-merges description 2020-12-21 13:47:32 -08:00
git-sparse-checkout.txt Merge branch 'en/sparse-with-submodule-doc' 2020-06-22 15:55:03 -07:00
git-stage.txt Documentation: adjust document title underlining 2014-10-13 13:35:18 -07:00
git-stash.txt git-stash.txt: be explicit about subcommand options 2021-02-11 13:34:58 -08:00
git-status.txt Documentation: typofix --column description 2021-02-19 19:36:47 -08:00
git-stripspace.txt
git-submodule.txt submodule: fall back to remote's HEAD for missing remote.<name>.branch 2020-06-24 09:14:21 -07:00
git-svn.txt Documentation: stylistically normalize references to Signed-off-by: 2020-10-20 11:57:40 -07:00
git-switch.txt checkout: learn to respect checkout.guess 2020-10-08 09:25:29 -07:00
git-symbolic-ref.txt
git-tag.txt Documentation: typofix --column description 2021-02-19 19:36:47 -08:00
git-tools.txt
git-unpack-file.txt
git-unpack-objects.txt
git-update-index.txt doc: remove "directory cache" from man pages 2021-01-09 22:57:24 -08:00
git-update-ref.txt update-ref: allow creation of multiple transactions 2020-11-16 13:44:01 -08:00
git-update-server-info.txt
git-upload-archive.txt
git-upload-pack.txt
git-var.txt
git-verify-commit.txt
git-verify-pack.txt
git-verify-tag.txt
git-web--browse.txt
git-whatchanged.txt
git-worktree.txt worktree: teach list verbose mode 2021-01-30 09:57:40 -08:00
git-write-tree.txt
git.txt git.txt: fix monospace rendering 2021-02-18 10:53:33 -08:00
gitattributes.txt userdiff: support Bash 2020-10-22 10:29:30 -07:00
gitcli.txt Merge branch 'jc/doc-single-h-is-for-help' into maint 2020-03-17 15:02:24 -07:00
gitcore-tutorial.txt doc/gitcore-tutorial: fix prose to match example command 2020-01-08 08:56:40 -08:00
gitcredentials.txt command-list.txt: add missing 'gitcredentials' and 'gitremote-helpers' 2020-08-04 18:34:01 -07:00
gitcvs-migration.txt
gitdiffcore.txt Merge branch 'en/diffcore-rename' 2021-03-01 14:02:56 -08:00
giteveryday.txt docs: adjust for the recent rename of pu to seen 2020-06-25 09:18:53 -07:00
gitfaq.txt docs: explain how to deal with files that are always modified 2020-09-20 21:29:02 -07:00
gitglossary.txt
githooks.txt doc: fix some typos 2021-01-04 11:27:48 -08:00
gitignore.txt
gitk.txt doc: log, gitk: move '-L' description to 'line-range-options.txt' 2020-11-01 15:54:14 -08:00
gitmailmap.txt gitmailmap.txt: fix rendering of e-mail addresses 2021-02-18 10:53:33 -08:00
gitmodules.txt gitmodules.txt: fix 'GIT_WORK_TREE' variable name 2021-01-04 11:29:36 -08:00
gitnamespaces.txt
gitremote-helpers.txt Merge branch 'bc/sha-256-part-2' 2020-07-06 22:09:13 -07:00
gitrepository-layout.txt Merge branch 'sg/dir-trie-fixes' 2019-11-10 18:02:14 +09:00
gitrevisions.txt
gitsubmodules.txt gitsubmodules doc: invoke 'ls-files' with '--recurse-submodules' 2020-10-04 12:54:07 -07:00
gittutorial-2.txt
gittutorial.txt
gitweb.conf.txt gitweb.conf.txt: switch pluses to backticks to help Asciidoctor 2019-09-09 11:05:52 -07:00
gitweb.txt
gitworkflows.txt gitworkflows.txt: fix broken subsection underline 2020-07-18 13:43:34 -07:00
glossary-content.txt glossary: improve "branch" definition 2020-12-02 14:53:42 -08:00
howto-index.sh
i18n.txt i18n.txt: camel case and monospace "i18n.commitEncoding" 2021-02-24 15:21:25 -08:00
install-doc-quick.sh
install-webdoc.sh
line-range-format.txt doc: add more pointers to gitattributes(5) for userdiff 2020-11-01 15:54:14 -08:00
line-range-options.txt blame-options.txt: also mention 'funcname' in '-L' description 2020-11-01 15:54:14 -08:00
lint-gitlink.perl
Makefile mailmap doc: create a new "gitmailmap(5)" man page 2021-01-12 14:04:39 -08:00
manpage-base-url.xsl.in
manpage-bold-literal.xsl manpage-bold-literal.xsl: stop using git.docbook.backslash 2020-03-29 09:25:38 -07:00
manpage-normal.xsl manpage-normal.xsl: fold in manpage-base.xsl 2020-03-29 09:25:38 -07:00
manpage-quote-apos.xsl
manpage.xsl Documentation: fix build with Asciidoctor 2 2019-09-16 12:20:39 -07:00
merge-options.txt doc: preparatory clean-up of description on the sign-off option 2020-10-20 11:57:35 -07:00
merge-strategies.txt merge-strategies: fix typo "reflected to" to "reflected in" 2019-11-11 11:04:46 +09:00
MyFirstContribution.txt tests: remove support for GIT_TEST_GETTEXT_POISON 2021-01-21 15:50:01 -08:00
MyFirstObjectWalk.txt MyFirstObjectWalk: drop init_walken_defaults() 2020-11-30 13:55:54 -08:00
object-format-disclaimer.txt Documentation: mark --object-format=sha256 as experimental 2020-08-17 10:50:14 -07:00
pretty-formats.txt pretty format %(trailers): add a "key_value_separator" 2020-12-09 14:16:42 -08:00
pretty-options.txt doc: clarify that --abbrev=<n> is about the minimum length 2020-11-04 14:04:44 -08:00
pull-fetch-param.txt refspec: add support for negative refspecs 2020-09-30 14:52:00 -07:00
ref-reachability-filters.txt Doc: prefer more specific file name 2020-09-18 15:41:56 -07:00
rev-list-description.txt git-log.txt: include rev-list-description.txt 2020-07-08 22:08:54 -07:00
rev-list-options.txt Merge branch 'ma/doc-markup-fix' 2021-02-25 16:43:30 -08:00
revisions.txt revisions.txt: describe 'rev1 rev2 ...' meaning for ranges 2020-07-08 22:08:53 -07:00
sequencer.txt
signoff-option.txt Documentation: stylistically normalize references to Signed-off-by: 2020-10-20 11:57:40 -07:00
SubmittingPatches SubmittingPatches: tighten wording on "sign-off" procedure 2021-01-07 15:41:36 -08:00
texi.xsl
trace2-target-values.txt docs: mention trace2 target-dir mode in git-config 2019-10-04 09:26:42 +09:00
transfer-data-leaks.txt
urls-remotes.txt
urls.txt Doc: Bundle file usage 2019-10-21 12:02:39 +09:00
user-manual.conf user-manual.conf: don't specify [listingblock] 2020-03-31 16:08:02 -07:00
user-manual.txt docs: adjust for the recent rename of pu to seen 2020-06-25 09:18:53 -07:00