summaryrefslogtreecommitdiff
path: root/t
AgeCommit message (Collapse)AuthorFilesLines
2016-04-22worktree.c: check whether branch is rebased in another worktreeLibravatar Nguyễn Thái Ngọc Duy1-0/+38
This function find_shared_symref() is used in a couple places: 1) in builtin/branch.c: it's used to detect if a branch is checked out elsewhere and refuse to delete the branch. 2) in builtin/notes.c: it's used to detect if a note is being merged in another worktree 3) in branch.c, the function die_if_checked_out() is actually used by "git checkout" and "git worktree add" to see if a branch is already checked out elsewhere and refuse the operation. In cases 1 and 3, if a rebase is ongoing, "HEAD" will be in detached mode, find_shared_symref() fails to detect it and declares "no branch is checked out here", which is not really what we want. This patch tightens the test. If the given symref is "HEAD", we try to detect if rebase is ongoing. If so return the branch being rebased. This makes checkout and branch delete operations safer because you can't checkout a branch being rebased in another place, or delete it. Special case for checkout. If the current branch is being rebased, git-rebase.sh may use "git checkout" to abort and return back to the original branch. The updated test in find_shared_symref() will prevent that and "git rebase --abort" will fail as a result. find_shared_symref() and die_if_checked_out() have to learn a new option ignore_current_worktree to loosen the test a bit. Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-04-18Merge branch 'jk/branch-shortening-funny-symrefs'Libravatar Junio C Hamano1-0/+12
A change back in version 2.7 to "git branch" broke display of a symbolic ref in a non-standard place in the refs/ hierarchy (we expect symbolic refs to appear in refs/remotes/*/HEAD to point at the primary branch the remote has, and as .git/HEAD to point at the branch we locally checked out). * jk/branch-shortening-funny-symrefs: branch: fix shortening of non-remote symrefs
2016-04-18Merge branch 'ky/branch-m-worktree'Libravatar Junio C Hamano1-1/+22
When "git worktree" feature is in use, "git branch -m" renamed a branch that is checked out in another worktree without adjusting the HEAD symbolic ref for the worktree. * ky/branch-m-worktree: set_worktree_head_symref(): fix error message branch -m: update all per-worktree HEADs refs: add a new function set_worktree_head_symref
2016-04-13Merge branch 'tb/blame-force-read-cache-to-workaround-safe-crlf'Libravatar Junio C Hamano1-0/+14
When running "git blame $path" with unnormalized data in the index for the path, the data in the working tree was blamed, even though "git add" would not have changed what is already in the index, due to "safe crlf" that disables the line-end conversion. It has been corrected. * tb/blame-force-read-cache-to-workaround-safe-crlf: correct blame for files commited with CRLF
2016-04-13Merge branch 'lt/pretty-expand-tabs'Libravatar Junio C Hamano2-1/+106
When "git log" shows the log message indented by 4-spaces, the remainder of a line after a HT does not align in the way the author originally intended. The command now expands tabs by default in such a case, and allows the users to override it with a new option, '--no-expand-tabs'. * lt/pretty-expand-tabs: pretty: test --expand-tabs pretty: allow tweaking tabwidth in --expand-tabs pretty: enable --expand-tabs by default for selected pretty formats pretty: expand tabs in indented logs to make things line up properly
2016-04-13Merge branch 'mj/pull-rebase-autostash'Libravatar Junio C Hamano1-7/+67
"git pull --rebase" learned "--[no-]autostash" option, so that the rebase.autostash configuration variable set to true can be overridden from the command line. * mj/pull-rebase-autostash: t5520: test --[no-]autostash with pull.rebase=true t5520: reduce commom lines of code t5520: factor out common "failing autostash" code t5520: factor out common "successful autostash" code t5520: use better test to check stderr output t5520: ensure consistent test conditions t5520: use consistent capitalization in test titles pull --rebase: add --[no-]autostash flag git-pull.c: introduce git_pull_config()
2016-04-13Merge branch 'sk/send-pack-all-fix'Libravatar Junio C Hamano1-0/+12
"git send-pack --all <there>" was broken when its command line option parsing was written in the 2.6 timeframe. * sk/send-pack-all-fix: git-send-pack: fix --all option when used with directory
2016-04-13Merge branch 'sg/diff-multiple-identical-renames'Libravatar Junio C Hamano1-0/+11
"git diff -M" used to work better when two originally identical files A and B got renamed to X/A and X/B by pairing A to X/A and B to X/B, but this was broken in the 2.0 timeframe. * sg/diff-multiple-identical-renames: diffcore: fix iteration order of identical files during rename detection
2016-04-13Merge branch 'ky/branch-d-worktree'Libravatar Junio C Hamano1-0/+6
When "git worktree" feature is in use, "git branch -d" allowed deletion of a branch that is checked out in another worktree * ky/branch-d-worktree: branch -d: refuse deleting a branch which is currently checked out
2016-04-13Merge branch 'rz/worktree-no-checkout'Libravatar Junio C Hamano1-0/+12
"git worktree add" can be given "--no-checkout" option to only create an empty worktree without checking out the files. * rz/worktree-no-checkout: worktree: add: introduce --checkout option
2016-04-08Merge branch 'jc/merge-refuse-new-root'Libravatar Junio C Hamano10-11/+35
"git merge" used to allow merging two branches that have no common base by default, which led to a brand new history of an existing project created and then get pulled by an unsuspecting maintainer, which allowed an unnecessary parallel history merged into the existing project. The command has been taught not to allow this by default, with an escape hatch "--allow-unrelated-histories" option to be used in a rare event that merges histories of two projects that started their lives independently. * jc/merge-refuse-new-root: merge: refuse to create too cool a merge by default
2016-04-06Merge branch 'la/tag-force-signing-annotated-tags'Libravatar Junio C Hamano1-0/+41
"git tag" can create an annotated tag without explicitly given an "-a" (or "-s") option (i.e. when a tag message is given). A new configuration variable, tag.forceSignAnnotated, can be used to tell the command to create signed tag in such a situation. * la/tag-force-signing-annotated-tags: tag: add the option to force signing of annotated tags
2016-04-06Merge branch 'jk/submodule-c-credential'Libravatar Junio C Hamano3-0/+57
"git -c credential.<var>=<value> submodule" can now be used to propagate configuration variables related to credential helper down to the submodules. * jk/submodule-c-credential: git_config_push_parameter: handle empty GIT_CONFIG_PARAMETERS git: submodule honor -c credential.* from command line quote: implement sq_quotef() submodule: fix segmentation fault in submodule--helper clone submodule: fix submodule--helper clone usage submodule: check argc count for git submodule--helper clone submodule: don't pass empty string arguments to submodule--helper clone
2016-04-06Merge branch 'jv/merge-nothing-into-void'Libravatar Junio C Hamano1-0/+10
"git merge FETCH_HEAD" dereferenced NULL pointer when merging nothing into an unborn history (which is arguably unusual usage, which perhaps was the reason why nobody noticed it). * jv/merge-nothing-into-void: merge: fix NULL pointer dereference when merging nothing into void
2016-04-06Merge branch 'ss/commit-squash-msg'Libravatar Junio C Hamano1-0/+28
When "git merge --squash" stopped due to conflict, the concluding "git commit" failed to read in the SQUASH_MSG that shows the log messages from all the squashed commits. * ss/commit-squash-msg: commit: do not lose SQUASH_MSG contents
2016-04-06Merge branch 'sb/rebase-x'Libravatar Junio C Hamano1-13/+6
"git rebase -x" can be used without passing "-i" option. * sb/rebase-x: t3404: cleanup double empty lines between tests rebase: decouple --exec from --interactive
2016-04-06Merge branch 'jk/test-httpd-config-nosystem'Libravatar Junio C Hamano1-0/+1
The tests that involve running httpd leaked the system-wide configuration in /etc/gitconfig to the tested environment. * jk/test-httpd-config-nosystem: t/lib-httpd: pass through GIT_CONFIG_NOSYSTEM env
2016-04-06Merge branch 'sb/clone-t57-t56'Libravatar Junio C Hamano10-0/+0
Rename bunch of tests on "git clone" for better organization. * sb/clone-t57-t56: clone tests: rename t57* => t56*
2016-04-06Merge branch 'ls/p4-map-user'Libravatar Junio C Hamano1-0/+61
"git p4" now allows P4 author names to be mapped to Git author names. * ls/p4-map-user: git-p4: map a P4 user to Git author name and email address
2016-04-06Merge branch 'pb/t7502-drop-dup'Libravatar Junio C Hamano1-5/+0
Code clean-up. * pb/t7502-drop-dup: t/t7502 : drop duplicate test
2016-04-06Merge branch 'da/mergetool-delete-delete-conflict'Libravatar Junio C Hamano1-0/+64
"git mergetool" did not work well with conflicts that both sides deleted. * da/mergetool-delete-delete-conflict: mergetool: honor tempfile configuration when resolving delete conflicts mergetool: support delete/delete conflicts
2016-04-06Merge branch 'sb/submodule-parallel-update'Libravatar Junio C Hamano3-2/+43
A major part of "git submodule update" has been ported to C to take advantage of the recently added framework to run download tasks in parallel. * sb/submodule-parallel-update: clone: allow an explicit argument for parallel submodule clones submodule update: expose parallelism to the user submodule helper: remove double 'fatal: ' prefix git submodule update: have a dedicated helper for cloning run_processes_parallel: rename parameters for the callbacks run_processes_parallel: treat output of children as byte array submodule update: direct error message to stderr fetching submodules: respect `submodule.fetchJobs` config option submodule-config: drop check against NULL submodule-config: keep update strategy around
2016-04-05correct blame for files commited with CRLFLibravatar Torsten Bögershausen1-0/+14
git blame reports lines as not "Not Committed Yet" when they have CRLF in the index, CRLF in the worktree and core.autocrlf is true. Since commit c4805393 (autocrlf: Make it work also for un-normalized repositories, 2010-05-12), files that have CRLF in the index are not normalized at commit when core.autocrl is set. Add a call to read_cache() early in fake_working_tree_commit(), before calling convert_to_git(). Signed-off-by: Torsten Bögershausen <tboegi@web.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-04-04branch: fix shortening of non-remote symrefsLibravatar Jeff King1-0/+12
Commit aedcb7d (branch.c: use 'ref-filter' APIs, 2015-09-23) adjusted the symref-printing code to look like this: if (item->symref) { skip_prefix(item->symref, "refs/remotes/", &desc); strbuf_addf(&out, " -> %s", desc); } This has three bugs in it: 1. It always skips past "refs/remotes/", instead of skipping past the prefix associated with the branch we are showing (so commonly we see "refs/remotes/" for the refs/remotes/origin/HEAD symref, but the previous code would skip "refs/heads/" when showing a symref it found in refs/heads/. 2. If skip_prefix() does not match, it leaves "desc" untouched, and we show whatever happened to be in it (which is the refname from a call to skip_prefix() earlier in the function). 3. If we do match with skip_prefix(), we stomp on the "desc" variable, which is later passed to add_verbose_info(). We probably want to retain the original refname there (though it likely doesn't matter in practice, since after all, one points to the other). The fix to match the original code is fairly easy: record the prefix to strip based on item->kind, and use it here. However, since we already have a local variable named "prefix", let's give the two prefixes verbose names so we don't confuse them. Signed-off-by: Jeff King <peff@peff.net> Acked-by: Karthik Nayak <karthik.188@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-04-04pretty: test --expand-tabsLibravatar Junio C Hamano1-0/+105
The test prepares a simple commit with HT on its log message lines, and makes sure that - formats that should or should not expand tabs by default do or do not expand tabs respectively, - with explicit --expand-tabs=<N> and short-hands --expand-tabs (equivalent to --expand-tabs=8) and --no-expand-tabs (equivalent to --expand-tabs=0) before or after the explicit --pretty=$fmt, the tabs are expanded (or not expanded) accordingly. The tests use the second line of the log message for formats other than --pretty=short, primarily because the first line of the email format is handled specially to add the [PATCH] prefix, etc. in a separate codepath (--pretty=short uses the first line because there is no other line to test). Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-04-04branch -m: update all per-worktree HEADsLibravatar Kazuki Yamaguchi1-1/+22
When renaming a branch, currently only the HEAD of current working tree is updated, but it must update HEADs of all working trees which point at the old branch. This is the current behavior, /path/to/wt's HEAD is not updated: % git worktree list /path/to 2c3c5f2 [master] /path/to/wt 2c3c5f2 [oldname] % git branch -m master master2 % git worktree list /path/to 2c3c5f2 [master2] /path/to/wt 2c3c5f2 [oldname] % git branch -m oldname newname % git worktree list /path/to 2c3c5f2 [master2] /path/to/wt 0000000 [oldname] This patch fixes this issue by updating all relevant worktree HEADs when renaming a branch. Signed-off-by: Kazuki Yamaguchi <k@rhe.jp> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-04-04t5520: test --[no-]autostash with pull.rebase=trueLibravatar Mehul Jain1-0/+10
The "--[no-]autostash" options for git-pull are only valid in rebase mode (i.e. either --rebase is used or pull.rebase=true). Existing tests already check the cases when --rebase is used but fail to check for pull.rebase=true case. Add two new tests to check that the --[no-]autostash options work with pull.rebase=true. Signed-off-by: Mehul Jain <mehul.jain2029@gmail.com> Reviewed-by: Eric Sunshine <sunshine@sunshineco.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-04-04t5520: reduce commom lines of codeLibravatar Mehul Jain1-9/+7
These two tests are almost similar and thus can be folded in a for-loop. Helped-by: Eric Sunshine <sunshine@sunshineco.com> Signed-off-by: Mehul Jain <mehul.jain2029@gmail.com> Reviewed-by: Eric Sunshine <sunshine@sunshineco.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-04-04t5520: factor out common "failing autostash" codeLibravatar Mehul Jain1-15/+11
Three tests contains repetitive lines of code. Factor out common code into test_pull_autostash_fail() and then call it in these tests. Helped-by: Eric Sunshine <sunshine@sunshineco.com> Signed-off-by: Mehul Jain <mehul.jain2029@gmail.com> Reviewed-by: Eric Sunshine <sunshine@sunshineco.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-04-04t5520: factor out common "successful autostash" codeLibravatar Mehul Jain1-29/+15
Four tests contains repetitive lines of code. Factor out common code into test_pull_autostash() and then call it in these tests. Helped-by: Eric Sunshine <sunshine@sunshineco.com> Signed-off-by: Mehul Jain <mehul.jain2029@gmail.com> Reviewed-by: Eric Sunshine <sunshine@sunshineco.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-04-04t5520: use better test to check stderr outputLibravatar Mehul Jain1-6/+4
Checking stderr output using test_i18ncmp may lead to test failure as some shells write trace output to stderr when run under 'set -x'. Use test_i18ngrep instead of test_i18ncmp. Signed-off-by: Mehul Jain <mehul.jain2029@gmail.com> Reviewed-by: Eric Sunshine <sunshine@sunshineco.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-04-04t5520: ensure consistent test conditionsLibravatar Mehul Jain1-0/+2
Test title says that tests are done with rebase.autostash unset, but does not take any action to make sure that it is indeed unset. This may lead to test failure if future changes somehow pollutes the configuration globally. Ensure consistent test conditions by explicitly unsetting rebase.autostash. Signed-off-by: Mehul Jain <mehul.jain2029@gmail.com> Reviewed-by: Eric Sunshine <sunshine@sunshineco.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-04-04t5520: use consistent capitalization in test titlesLibravatar Mehul Jain1-2/+2
Signed-off-by: Mehul Jain <mehul.jain2029@gmail.com> Reviewed-by: Eric Sunshine <sunshine@sunshineco.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-04-03Merge branch 'jk/startup-info'Libravatar Junio C Hamano2-5/+27
The startup_info data, which records if we are working inside a repository (among other things), are now uniformly available to Git subcommand implementations, and Git avoids attempting to touch references when we are not in a repository. * jk/startup-info: use setup_git_directory() in test-* programs grep: turn off gitlink detection for --no-index mailmap: do not resolve blobs in a non-repository remote: don't resolve HEAD in non-repository setup: set startup_info->have_repository more reliably setup: make startup_info available everywhere
2016-04-03Merge branch 'es/test-gpg-tags'Libravatar Junio C Hamano2-35/+65
A test for tags has been restructured so that more parts of it can easily be run on a platform without a working GnuPG. * es/test-gpg-tags: t6302: skip only signed tags rather than all tests when GPG is missing t6302: also test annotated in addition to signed tags t6302: normalize names and descriptions of signed tags lib-gpg: drop unnecessary "missing GPG" warning
2016-04-03Merge branch 'jk/getwholeline-getdelim-empty'Libravatar Junio C Hamano1-0/+4
strbuf_getwholeline() did not NUL-terminate the buffer on certain corner cases in its error codepath. * jk/getwholeline-getdelim-empty: strbuf_getwholeline: NUL-terminate getdelim buffer on error
2016-04-03Merge branch 'gf/fetch-pack-direct-object-fetch'Libravatar Junio C Hamano1-0/+14
Fetching of history by naming a commit object name directly didn't work across remote-curl transport. * gf/fetch-pack-direct-object-fetch: fetch-pack: update the documentation for "<refs>..." arguments fetch-pack: fix object_id of exact sha1
2016-04-03Merge branch 'jc/maint-index-pack-keep'Libravatar Junio C Hamano1-0/+6
"git index-pack --keep[=<msg>] pack-$name.pack" simply did not work. * jc/maint-index-pack-keep: index-pack: correct --keep[=<msg>]
2016-04-03Merge branch 'jk/rev-parse-local-env-vars'Libravatar Junio C Hamano1-0/+45
The "--local-env-vars" and "--resolve-git-dir" options of "git rev-parse" failed to work outside a repository when the command's option parsing was rewritten in 1.8.5 era. * jk/rev-parse-local-env-vars: rev-parse: let some options run outside repository t1515: add tests for rev-parse out-of-repo helpers
2016-04-03Merge branch 'jk/config-get-urlmatch'Libravatar Junio C Hamano1-0/+3
"git config --get-urlmatch", unlike other variants of the "git config --get" family, did not signal error with its exit status when there was no matching configuration. * jk/config-get-urlmatch: Documentation/git-config: fix --get-all description Documentation/git-config: use bulleted list for exit codes config: fail if --get-urlmatch finds no value
2016-04-03Merge branch 'jk/credential-clear-config'Libravatar Junio C Hamano1-0/+11
The credential.helper configuration variable is cumulative and there is no good way to override it from the command line. As a special case, giving an empty string as its value now serves as the signal to clear the values specified in various files. * jk/credential-clear-config: credential: let empty credential specs reset helper list
2016-04-03Merge branch 'mm/diff-renames-default'Libravatar Junio C Hamano5-38/+104
The end-user facing Porcelain level commands like "diff" and "log" now enables the rename detection by default. * mm/diff-renames-default: diff: activate diff.renames by default log: introduce init_log_defaults() t: add tests for diff.renames (true/false/unset) t4001-diff-rename: wrap file creations in a test Documentation/diff-config: fix description of diff.renames
2016-03-31git-send-pack: fix --all option when used with directoryLibravatar Stanislav Kolotinskiy1-0/+12
When using git send-pack with --all option and a target repository specification ([<host>:]<directory>), usage message is being displayed instead of performing the actual transmission. The reason for this issue is that destination and refspecs are being set in the same conditional and are populated from argv. When a target repository is passed, refspecs is being populated as well with its value. This makes the check for refspecs not being NULL to always return true, which, in conjunction with the check for --all or --mirror options, is always true as well and returns usage message instead of proceeding. This ensures that send-pack will stop execution only when --all or --mirror switch is used in conjunction with any refspecs passed. Signed-off-by: Stanislav Kolotinskiy <stanislav@assembla.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-03-30diffcore: fix iteration order of identical files during rename detectionLibravatar SZEDER Gábor1-0/+11
If the two paths 'dir/A/file' and 'dir/B/file' have identical content and the parent directory is renamed, e.g. 'git mv dir other-dir', then diffcore reports the following exact renames: renamed: dir/B/file -> other-dir/A/file renamed: dir/A/file -> other-dir/B/file While technically not wrong, this is confusing not only for the user, but also for git commands that make decisions based on rename information, e.g. 'git log --follow other-dir/A/file' follows 'dir/B/file' past the rename. This behavior is a side effect of commit v2.0.0-rc4~8^2~14 (diffcore-rename.c: simplify finding exact renames, 2013-11-14): the hashmap storing sources returns entries from the same bucket, i.e. sources matching the current destination, in LIFO order. Thus the iteration first examines 'other-dir/A/file' and 'dir/B/file' and, upon finding identical content and basename, reports an exact rename. Other hashmap users are apparently happy with the current iteration order over the entries of a bucket. Changing the iteration order would risk upsetting other hashmap users and would increase the memory footprint of each bucket by a pointer to the tail element. Fill the hashmap with source entries in reverse order to restore the original exact rename detection behavior. Reported-by: Bill Okara <billokara@gmail.com> Signed-off-by: SZEDER Gábor <szeder@ira.uka.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-03-30pretty: enable --expand-tabs by default for selected pretty formatsLibravatar Junio C Hamano1-1/+1
"git log --pretty={medium,full,fuller}" and "git log" by default prepend 4 spaces to the log message, so it makes sense to enable the new "expand-tabs" facility by default for these formats. Add --no-expand-tabs option to override the new default. The change alone breaks a test in t4201 that runs "git shortlog" on the output from "git log", and expects that the output from "git log" does not do such a tab expansion. Adjust the test to explicitly disable expand-tabs with --no-expand-tabs. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-03-29branch -d: refuse deleting a branch which is currently checked outLibravatar Kazuki Yamaguchi1-0/+6
When a branch is checked out by current working tree, deleting the branch is forbidden. However when the branch is checked out only by other working trees, deleting incorrectly succeeds. Use find_shared_symref() to check if the branch is in use, not just comparing with the current working tree's HEAD. Helped-by: Eric Sunshine <sunshine@sunshineco.com> Signed-off-by: Kazuki Yamaguchi <k@rhe.jp> Reviewed-by: Eric Sunshine <sunshine@sunshineco.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-03-29worktree: add: introduce --checkout optionLibravatar Ray Zhang1-0/+12
By adding this option which defaults to true, we can use the corresponding --no-checkout to make some customizations before the checkout, like sparse checkout, etc. Helped-by: Eric Sunshine <sunshine@sunshineco.com> Helped-by: Junio C Hamano <gitster@pobox.com> Reviewed-by: Eric Sunshine <sunshine@sunshineco.com> Signed-off-by: Ray Zhang <zhanglei002@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-03-24Merge branch 'js/mingw-tests-2.8'Libravatar Junio C Hamano2-11/+10
* js/mingw-tests-2.8: mingw: skip some tests in t9115 due to file name issues t1300: fix the new --show-origin tests on Windows t1300-repo-config: make it resilient to being run via 'sh -x' config --show-origin: report paths with forward slashes
2016-03-24Merge branch 'sb/submodule-module-list-pathspec-fix'Libravatar Junio C Hamano1-0/+13
A fix for a small regression in "module_list" helper that was rewritten in C (also applies to 2.7.x). * sb/submodule-module-list-pathspec-fix: submodule: fix regression for deinit without submodules
2016-03-23merge: refuse to create too cool a merge by defaultLibravatar Junio C Hamano10-11/+35
While it makes sense to allow merging unrelated histories of two projects that started independently into one, in the way "gitk" was merged to "git" itself aka "the coolest merge ever", such a merge is still an unusual event. Worse, if somebody creates an independent history by starting from a tarball of an established project and sends a pull request to the original project, "git merge" however happily creates such a merge without any sign of something unusual is happening. Teach "git merge" to refuse to create such a merge by default, unless the user passes a new "--allow-unrelated-histories" option to tell it that the user is aware that two unrelated projects are merged. Because such a "two project merge" is a rare event, a configuration option to always allow such a merge is not added. We could add the same option to "git pull" and have it passed through to underlying "git merge". I do not have a fundamental opposition against such a feature, but this commit does not do so and instead leaves it as low-hanging fruit for others, because such a "two project merge" would be done after fetching the other project into some location in the working tree of an existing project and making sure how well they fit together, it is sufficient to allow a local merge without such an option pass-through from "git pull" to "git merge". Many tests that are updated by this patch does the pass-through manually by turning: git pull something into its equivalent: git fetch something && git merge --allow-unrelated-histories FETCH_HEAD If somebody is inclined to add such an option, updated tests in this change need to be adjusted back to: git pull --allow-unrelated-histories something Signed-off-by: Junio C Hamano <gitster@pobox.com>