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2015-06-24Merge branch 'pt/am-abort-fix'Libravatar Junio C Hamano1-0/+81
Various fixes around "git am" that applies a patch to a history that is not there yet. * pt/am-abort-fix: am --abort: keep unrelated commits on unborn branch am --abort: support aborting to unborn branch am --abort: revert changes introduced by failed 3way merge am --skip: support skipping while on unborn branch am -3: support 3way merge on unborn branch am --skip: revert changes introduced by failed 3way merge
2015-06-08am --abort: keep unrelated commits on unborn branchLibravatar Paul Tan1-0/+11
Since 7b3b7e3 (am --abort: keep unrelated commits since the last failure and warn, 2010-12-21), git-am would refuse to rewind HEAD if commits were made since the last git-am failure. This check was implemented in safe_to_abort(), which checked to see if HEAD's hash matched the abort-safety file. However, this check was skipped if the abort-safety file was empty, which can happen if git-am failed while on an unborn branch. As such, if any commits were made since then, they would be discarded. Fix this by carrying on the abort safety check even if the abort-safety file is empty. Signed-off-by: Paul Tan <pyokagan@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-06-08am --abort: support aborting to unborn branchLibravatar Paul Tan1-0/+17
When git-am is first run on an unborn branch, no ORIG_HEAD is created. As such, any applied commits will remain even after a git am --abort. To be consistent with the behavior of git am --abort when it is not run from an unborn branch, we empty the index, and then destroy the branch pointed to by HEAD if there is no ORIG_HEAD. Signed-off-by: Paul Tan <pyokagan@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-06-08am --abort: revert changes introduced by failed 3way mergeLibravatar Paul Tan1-0/+23
Even when a merge conflict occurs with am --3way, the index will be modified with the results of any successfully merged files. These changes to the index will not be reverted with a "git read-tree --reset -u HEAD ORIG_HEAD", as git read-tree will not be aware of how the current index differs from HEAD or ORIG_HEAD. To fix this, we first reset any conflicting entries in the index. The resulting index will contain the results of successfully merged files introduced by the failed merge. We write this index to a tree, and then use git read-tree to fast-forward this "index tree" back to ORIG_HEAD, thus undoing all the changes from the failed merge. When we are on an unborn branch, HEAD and ORIG_HEAD will not point to valid trees. In this case, use an empty tree. Signed-off-by: Paul Tan <pyokagan@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-06-08am --skip: support skipping while on unborn branchLibravatar Paul Tan1-0/+10
When git am --skip is run, git am will copy HEAD's tree entries to the index with "git reset HEAD". However, on an unborn branch, HEAD does not point to a tree, so "git reset HEAD" will fail. Fix this by treating HEAD as en empty tree when we are on an unborn branch. Signed-off-by: Paul Tan <pyokagan@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-06-08am -3: support 3way merge on unborn branchLibravatar Paul Tan1-0/+9
While on an unborn branch, git am -3 will fail to do a threeway merge as it references HEAD as "our tree", but HEAD does not point to a valid tree. Fix this by using an empty tree as "our tree" when we are on an unborn branch. Signed-off-by: Paul Tan <pyokagan@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-06-08am --skip: revert changes introduced by failed 3way mergeLibravatar Paul Tan1-0/+11
Even when a merge conflict occurs with am --3way, the index will be modified with the results of any succesfully merged files (such as a new file). These changes to the index will not be reverted with a "git read-tree --reset -u HEAD HEAD", as git read-tree will not be aware of how the current index differs from HEAD. To fix this, we first reset any conflicting entries from the index. The resulting index will contain the results of successfully merged files. We write the index to a tree, then use git read-tree -m to fast-forward the "index tree" back to HEAD, thus undoing all the changes from the failed merge. Signed-off-by: Paul Tan <pyokagan@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-03-25t: fix some trivial cases of ignored exit codes in loopsLibravatar Jeff King1-1/+1
These are all cases where we do a setup step of the form: for i in $foo; do set_up $i || break done && more_setup would not notice a failure in set_up (because break always returns a 0 exit code). These are just setup steps that we do not expect to fail, but it does not hurt to be defensive. Most can be fixed by converting the "break" to a "return 1" (since we eval our tests inside a function for just this purpose). A few of the loops are inside subshells, so we can use just "exit 1" to break out of the subshell. And a few can actually be made shorter by just unrolling the loop. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-05-21i18n: git-am core say messagesLibravatar Ævar Arnfjörð Bjarmason1-2/+3
Make the core git-am messages that use say() translatable. These are visible on almost every git am invocation. There are tests that depend on the "Applying" output that need to be changed to use the test_i18* functions along with this translation. Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-12-21am --abort: keep unrelated commits since the last failure and warnLibravatar Junio C Hamano1-0/+9
After making commits (either by pulling or doing their own work) after a failed "am", the user will be reminded by next "am" invocation that there was a failed "am" that the user needs to decide to resolve or to get rid of the old "am" attempt. The "am --abort" option was meant to help the latter. However, it rewinded the HEAD back to the beginning of the failed "am" attempt, discarding commits made (perhaps by mistake) since. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-07-14MERGE_RR is in .git, not .git/rr-cacheLibravatar Jay Soffian1-2/+2
0af0ac7 (Move MERGE_RR from .git/rr-cache/ into .git/) moved the location of MERGE_RR but I found a few references to the old location. Signed-off-by: Jay Soffian <jaysoffian@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-10-18format-patch: autonumber by defaultLibravatar Brian Gernhardt1-1/+1
format-patch is most commonly used for multiple patches at once when sending a patchset, in which case we want to number the patches; on the other hand, single patches are not usually expected to be numbered. In other words, the typical behavior expected from format-patch is the one obtained by enabling autonumber, so we set it to be the default. Users that want to disable numbering for a particular patchset can do so with the existing -N command-line switch. Users that want to change the default behavior can use the format.numbering config key. Signed-off-by: Brian Gernhardt <benji@silverinsanity.com> Test-updates-by: Jeff King <peff@peff.net> Signed-off-by: Shawn O. Pearce <spearce@spearce.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-09-03tests: use "git xyzzy" form (t3600 - t6999)Libravatar Nanako Shiraishi1-2/+2
Converts tests between t3600-t6300. Signed-off-by: Nanako Shiraishi <nanako3@lavabit.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-07-24update test case to protect am --skip behaviourLibravatar Olivier Marin1-0/+2
Signed-off-by: Olivier Marin <dkr@freesurf.fr> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-07-23git-am: Add colon before the subject that is printed out as being appliedLibravatar Stephan Beyer1-1/+1
git-am output can be confusing, because the subject of the applied patch can look like the rest of a sentence starting with "Applying". The added colon should make this clearer. Signed-off-by: Stephan Beyer <s-beyer@gmx.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-07-22git am --skip: clean the index while preserving local changesLibravatar Olivier Marin1-2/+9
In 3-way merge, "am" will let the index with unmerged path waiting for us to resolve conflicts and continue. But if we want to --skip instead, "am" refuses to continue because of the dirty index. With this patch, "am" will clean the index without touching files locally modified, before continuing. Signed-off-by: Olivier Marin <dkr@freesurf.fr> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-07-19git am --abortLibravatar Nanako Shiraishi1-0/+56
After failing to apply patches in the middle of a series, "git am --abort" lets you go back to the original commit. [jc: doc/help update from Olivier, and fixups for "am -3" squashed in] Signed-off-by: Nanako Shiraishi <nanako3@lavabit.com> Signed-off-by: Olivier Marin <dkr@freesurf.fr> Signed-off-by: Junio C Hamano <gitster@pobox.com>