- 08 11月, 2018 7 次提交
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由 Elijah Newren 提交于
This results in no-net change of behavior, it simply ensures that all file-collision conflict handling types are being handled the same by calling the same function. Signed-off-by: NElijah Newren <newren@gmail.com> Signed-off-by: NJunio C Hamano <gitster@pobox.com>
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由 Elijah Newren 提交于
This makes the rename/rename(2to1) conflicts use the new handle_file_collision() function. Since that function was based originally on the rename/rename(2to1) handling code, the main differences here are in what was added. In particular: * Instead of storing files at collide_path~HEAD and collide_path~MERGE, the files are two-way merged and recorded at collide_path. * Instead of recording the version of the renamed file that existed on the renamed side in the index (thus ignoring any changes that were made to the file on the side of history without the rename), we do a three-way content merge on the renamed path, then store that at either stage 2 or stage 3. * Note that since the content merge for each rename may have conflicts, and then we have to merge the two renamed files, we can end up with nested conflict markers. Signed-off-by: NElijah Newren <newren@gmail.com> Signed-off-by: NJunio C Hamano <gitster@pobox.com>
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由 Elijah Newren 提交于
This makes the rename/add conflict handling make use of the new handle_file_collision() function, which fixes several bugs and improves things for the rename/add case significantly. Previously, rename/add would: * Not leave any higher order stage entries in the index, making it appear as if there were no conflict. * Would place the rename file at the colliding path, and move the added file elsewhere, which combined with the lack of higher order stage entries felt really odd. It's not clear to me why the rename should take precedence over the add; if one should be moved out of the way, they both probably should. * In the recursive case, it would do a two way merge of the added file and the version of the renamed file on the renamed side, completely excluding modifications to the renamed file on the unrenamed side of history. Use the new handle_file_collision() to fix all of these issues. Signed-off-by: NElijah Newren <newren@gmail.com> Signed-off-by: NJunio C Hamano <gitster@pobox.com>
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由 Elijah Newren 提交于
There are three conflict types that represent two (possibly entirely unrelated) files colliding at the same location: * add/add * rename/add * rename/rename(2to1) These three conflict types already share more similarity than might be immediately apparent from their description: (1) the handling of the rename variants already involves removing any entries from the index corresponding to the original file names[*], thus only leaving entries in the index for the colliding path; (2) likewise, any trace of the original file name in the working tree is also removed. So, in all three cases we're left with how to represent two colliding files in both the index and the working copy. [*] Technically, this isn't quite true because rename/rename(2to1) conflicts in the recursive (o->call_depth > 0) case do an "unrename" since about seven years ago. But even in that case, Junio felt compelled to explain that my decision to "unrename" wasn't necessarily the only or right answer -- search for "Comment from Junio" in t6036 for details. My initial motivation for looking at these three conflict types was that if the handling of these three conflict types is the same, at least in the limited set of cases where a renamed file is unmodified on the side of history where the file is not renamed, then a significant performance improvement for rename detection during merges is possible. However, while that served as motivation to look at these three types of conflicts, the actual goal of this new function is to try to improve the handling for all three cases, not to merely make them the same as each other in that special circumstance. === Handling the working tree === The previous behavior for these conflict types in regards to the working tree (assuming the file collision occurs at 'foo') was: * add/add does a two-way merge of the two files and records it as 'foo'. * rename/rename(2to1) records the two different files into two new uniquely named files (foo~HEAD and foo~$MERGE), while removing 'foo' from the working tree. * rename/add records the two different files into two different locations, recording the add at foo~$SIDE and, oddly, recording the rename at foo (why is the rename more important than the add?) So, the question for what to write to the working tree boils down to whether the two colliding files should be two-way merged and recorded in place, or recorded into separate files. As per discussion on the git mailing lit, two-way merging was deemed to always be preferred, as that makes these cases all more like content conflicts that users can handle from within their favorite editor, IDE, or merge tool. Note that since renames already involve a content merge, rename/add and rename/rename(2to1) conflicts could result in nested conflict markers. === Handling of the index === For a typical rename, unpack_trees() would set up the index in the following fashion: old_path new_path stage1: 5ca1ab1e 00000000 stage2: f005ba11 00000000 stage3: 00000000 b0a710ad And merge-recursive would rewrite this to new_path stage1: 5ca1ab1e stage2: f005ba11 stage3: b0a710ad Removing old_path from the index means the user won't have to `git rm old_path` manually every time a renamed path has a content conflict. It also means they can use `git checkout [--ours|--theirs|--conflict|-m] new_path`, `git diff [--ours|--theirs]` and various other commands that would be difficult otherwise. This strategy becomes a problem when we have a rename/add or rename/rename(2to1) conflict, however, because then we have only three slots to store blob sha1s and we need either four or six. Previously, this was handled by continuing to delete old_path from the index, and just outright ignoring any blob shas from old_path. That had the downside of deleting any trace of changes made to old_path on the other side of history. This function instead does a three-way content merge of the renamed file, and stores the blob sha1 for that at either stage2 or stage3 for new_path (depending on which side the rename came from). That has the advantage of bringing information about changes on both sides and still allows for easy resolution (no need to git rm old_path, etc.), but does have the downside that if the content merge had conflict markers, then what we store in the index is the sha1 of a blob with conflict markers. While that is a downside, it seems less problematic than the downsides of any obvious alternatives, and certainly makes more sense than the previous handling. Further, it has a precedent in that when we do recursive merges, we may accept a file with conflict markers as the resolution for the merge of the merge-bases, which will then show up in the index of the outer merge at stage 1 if a conflict exists at the outer level. Signed-off-by: NElijah Newren <newren@gmail.com> Signed-off-by: NJunio C Hamano <gitster@pobox.com>
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由 Elijah Newren 提交于
Later patches in this series will modify file collision conflict handling (e.g. from rename/add and rename/rename(2to1) conflicts) so that multiply nested conflict markers can arise even before considering conflicts in the virtual merge base. Including the virtual merge base will provide a way to get triply (or higher) nested conflict markers. This new way to get nested conflict markers will force the need for a more general mechanism to extend the length of conflict markers in order to differentiate between different nestings. Along with this change to conflict marker length handling, we want to make sure that we don't regress handling for other types of conflicts with nested conflict markers. Add a more involved testcase using merge.conflictstyle=diff3, where not only does the virtual merge base contain conflicts, but its virtual merge base does as well (i.e. a case with triply nested conflict markers). While there are multiple reasonable ways to handle nested conflict markers in the virtual merge base for this type of situation, the easiest approach that dovetails well with the new needs for the file collision conflict handling is to require that the length of the conflict markers increase with each subsequent nesting. Subsequent patches which change the rename/add and rename/rename(2to1) conflict handling will modify the extra_marker_size flag appropriately for their new needs. Signed-off-by: NElijah Newren <newren@gmail.com> Signed-off-by: NJunio C Hamano <gitster@pobox.com>
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由 Elijah Newren 提交于
When a single file is renamed, it can also be modified, yielding the possibility of that renamed file having content conflicts. If two different such files are renamed into the same location, then two-way merging those files may result in nested conflicts. Add a testcase that makes sure we get this case correct, and uses different lengths of conflict markers to differentiate between the different nestings. Also add another case with an extra (i.e. third) level of conflict markers due to using merge.conflictstyle=diff3 and the virtual merge base also having conflicts present. Signed-off-by: NElijah Newren <newren@gmail.com> Signed-off-by: NJunio C Hamano <gitster@pobox.com>
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由 Elijah Newren 提交于
Add testcases dealing with file collisions for the following types of conflicts: * add/add * rename/add * rename/rename(2to1) All these conflict types simplify down to two files "colliding" and should thus be handled similarly. This means that rename/add and rename/rename(2to1) conflicts need to be modified to behave the same as add/add conflicts currently do: the colliding files should be two-way merged (instead of the current behavior of writing the two colliding files out to separate temporary unique pathnames). Add testcases which check this; subsequent commits will fix the conflict handling to make these tests pass. Signed-off-by: NElijah Newren <newren@gmail.com> Signed-off-by: NJunio C Hamano <gitster@pobox.com>
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- 18 10月, 2018 2 次提交
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由 Elijah Newren 提交于
We want to load unmerged entries from HEAD into the index at stage 2 and from MERGE_HEAD into stage 3. Similarly, folks expect merge conflicts to look like <<<<<<<< HEAD content from our side ======== content from their side >>>>>>>> MERGE_HEAD not <<<<<<<< MERGE_HEAD content from their side ======== content from our side >>>>>>>> HEAD The correct order usually comes naturally and for free, but with renames we often have data in the form {rename_branch, other_branch}, and working relative to the rename first (e.g. for rename/add) is more convenient elsewhere in the code. Address the slight impedance mismatch by having some functions re-call themselves with flipped arguments when the branch order is reversed. Note that setup_rename_conflict_info() has one asymmetry in it, in setting dst_entry1->processed=0 but not doing similarly for dst_entry2->processed. When dealing with rename/rename and similar conflicts, we do not want the processing to happen twice, so the desire to only set one of the entries to unprocessed is intentional. So, while this change modifies which branch's entry will be marked as unprocessed, that dovetails nicely with putting HEAD first so that we get the index stage entries and conflict markers in the right order. Signed-off-by: NElijah Newren <newren@gmail.com> Signed-off-by: NJunio C Hamano <gitster@pobox.com>
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由 Elijah Newren 提交于
Each individual file involved in a rename could have also been modified on both sides of history, meaning it may need to have content merges. If two such files are renamed into the same location, then on top of the two natural auto-merging messages we also have to two-way merge the result, giving us messages that look like Auto-merging somefile.c (was somecase.c) Auto-merging somefile.c (was somefolder.c) Auto-merging somefile.c However, despite the fact that I was the one who put the "(was %s)" portions into the messages (and just a few months ago), I was still initially confused when running into a rename/rename(2to1) case and wondered if somefile.c had been merged three times. Update this to instead be: Auto-merging version of somefile.c from somecase.c Auto-merging version of somefile.c from someportfolio.c Auto-merging somefile.c This is an admittedly long set of messages for a single path, but you only get all three messages when dealing with the rare case of a rename/rename(2to1) conflict where both sides of both original files were also modified, in conflicting ways. Signed-off-by: NElijah Newren <newren@gmail.com> Signed-off-by: NJunio C Hamano <gitster@pobox.com>
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- 21 9月, 2018 4 次提交
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由 Elijah Newren 提交于
Summary: merge_file_1() -> merge_mode_and_contents() merge_content() -> handle_content_merge() merge_file_1() is a very unhelpful name. Rename it to merge_mode_and_contents() to reflect what it does. merge_content() calls merge_mode_and_contents() to do the main part of its work, but most of this function was about higher level stuff, e.g. printing out conflict messages, updating skip_worktree bits, checking for ability to avoid updating the working tree or for D/F conflicts being in the way, etc. Since there are several handle_*() functions for similar levels of checking and handling in merge-recursive.c (e.g. handle_change_delete(), handle_rename_rename_2to1()), let's rename this function to handle_content_merge(). Signed-off-by: NElijah Newren <newren@gmail.com> Signed-off-by: NJunio C Hamano <gitster@pobox.com>
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由 Elijah Newren 提交于
The function names merge_file_one() and merge_file_1() aren't particularly intuitive function names, especially since there is no associated merge_file() function that these are related to. The previous commit showed that merge_file_one() was prone to be called when merge_file_1() should be, and since it is just a thin wrapper around merge_file_1() anyway and only has one caller left, let's just remove merge_file_one() entirely. (It also turns out that the one remaining caller of merge_file_one() has very broken code that needs to be completely rewritten, but that's the subject of a future patch series; for now, we're just translating it into a merge_file_1() call.) Signed-off-by: NElijah Newren <newren@gmail.com> Signed-off-by: NJunio C Hamano <gitster@pobox.com>
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由 Elijah Newren 提交于
merge_file_one() is a convenience function taking a bunch of oids and modes, combining each pair into a diff_filespec, and then calling merge_file_1(). When we already start with diff_filespec's, we can just call merge_file_1() directly instead of splitting out the oids and modes for the wrapper to recombine into what we already had. Signed-off-by: NElijah Newren <newren@gmail.com> Signed-off-by: NJunio C Hamano <gitster@pobox.com>
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由 Elijah Newren 提交于
merge_3way() has code to mark different sides of the conflict with info about where the content comes from. If the names of the files involved match, it simply uses the branch name. If the names of the files do not match, it uses branchname:filename. Unfortunately, merge_content() previously always called it with one.path = a.path = b.path. Granted, it didn't have other path information available to it for years, but that was corrected by passing rename_conflict_info in commit 3c217c07 ("merge-recursive: Provide more info in conflict markers with file renames", 2011-08-11). In that commit, instead of just fixing the bug with the pathnames, it created fake branch names incorporating both the branch name and file name. This "fake branch" workaround was extended further when I pulled that logic out into a special function in commit dac47415 ("merge-recursive: Create function for merging with branchname:file markers", 2011-08-11), and a number of other sites outside of merge_content() have been added which call into that. However, this Rube-Goldberg-esque setup is not merely duplicate code and unnecessary work, it also risked having other callsites invoke it in a way that would result in markers of the form branchname:filename:filename (i.e. with the filename repeated). Fix this whole mess by: - setting one.path, a.path, and b.path appropriately - calling merge_file_1() directly - deleting the merge_file_special_markers() workaround wrapper Signed-off-by: NElijah Newren <newren@gmail.com> Signed-off-by: NJunio C Hamano <gitster@pobox.com>
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- 18 9月, 2018 27 次提交
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由 Junio C Hamano 提交于
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由 Junio C Hamano 提交于
Debugging aid update. * nd/bisect-show-list-fix: bisect.c: make show_list() build again
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由 Junio C Hamano 提交于
The rules used by "git push" and "git fetch" to determine if a ref can or cannot be updated were inconsistent; specifically, fetching to update existing tags were allowed even though tags are supposed to be unmoving anchoring points. "git fetch" was taught to forbid updates to existing tags without the "--force" option. * ab/fetch-tags-noclobber: fetch: stop clobbering existing tags without --force fetch: document local ref updates with/without --force push doc: correct lies about how push refspecs work push doc: move mention of "tag <tag>" later in the prose push doc: remove confusing mention of remote merger fetch tests: add a test for clobbering tag behavior push tests: use spaces in interpolated string push tests: make use of unused $1 in test description fetch: change "branch" to "reference" in --force -h output
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由 Junio C Hamano 提交于
Fix a bug in which the same path could be registered under multiple worktree entries if the path was missing (for instance, was removed manually). Also, as a convenience, expand the number of cases in which --force is applicable. * es/worktree-forced-ops-fix: doc-diff: force worktree add worktree: delete .git/worktrees if empty after 'remove' worktree: teach 'remove' to override lock when --force given twice worktree: teach 'move' to override lock when --force given twice worktree: teach 'add' to respect --force for registered but missing path worktree: disallow adding same path multiple times worktree: prepare for more checks of whether path can become worktree worktree: generalize delete_git_dir() to reduce code duplication worktree: move delete_git_dir() earlier in file for upcoming new callers worktree: don't die() in library function find_worktree()
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由 Junio C Hamano 提交于
Docfix. * sg/doc-trace-appends: Documentation/git.txt: clarify that GIT_TRACE=/path appends
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由 Junio C Hamano 提交于
Dev doc update. * jk/diff-rendered-docs: Revert "doc/Makefile: drop doc-diff worktree and temporary files on "make clean"" doc/Makefile: drop doc-diff worktree and temporary files on "make clean" doc-diff: add --clean mode to remove temporary working gunk doc-diff: fix non-portable 'man' invocation doc-diff: always use oids inside worktree SubmittingPatches: mention doc-diff
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由 Junio C Hamano 提交于
Malformed or crafted data in packstream can make our code attempt to read or write past the allocated buffer and abort, instead of reporting an error, which has been fixed. * jk/patch-corrupted-delta-fix: t5303: use printf to generate delta bases patch-delta: handle truncated copy parameters patch-delta: consistently report corruption patch-delta: fix oob read t5303: test some corrupt deltas test-delta: read input into a heap buffer
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由 Junio C Hamano 提交于
We can now optionally run tests with commit-graph enabled. * ds/commit-graph-tests: commit-graph: define GIT_TEST_COMMIT_GRAPH
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由 Junio C Hamano 提交于
Hotfix of the base topic. * jk/pack-objects-with-bitmap-fix: pack-bitmap: drop "loaded" flag traverse_bitmap_commit_list(): don't free result t5310: test delta reuse with bitmaps bitmap_has_sha1_in_uninteresting(): drop BUG check
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由 Junio C Hamano 提交于
"git mailinfo" used in "git am" learned to make a best-effort recovery of a patch corrupted by MUA that sends text/plain with format=flawed option. * rs/mailinfo-format-flowed: mailinfo: support format=flowed
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由 Junio C Hamano 提交于
spatch transformation to replace boolean uses of !hashcmp() to newly introduced oideq() is added, and applied, to regain performance lost due to support of multiple hash algorithms. * jk/cocci: show_dirstat: simplify same-content check read-cache: use oideq() in ce_compare functions convert hashmap comparison functions to oideq() convert "hashcmp() != 0" to "!hasheq()" convert "oidcmp() != 0" to "!oideq()" convert "hashcmp() == 0" to hasheq() convert "oidcmp() == 0" to oideq() introduce hasheq() and oideq() coccinelle: use <...> for function exclusion
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由 Junio C Hamano 提交于
Clarify a part of technical documentation for rerere. * tg/rerere-doc-updates: rerere: add note about files with existing conflict markers rerere: mention caveat about unmatched conflict markers
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由 Junio C Hamano 提交于
"git format-patch" learned a new "--range-diff" option to explain the difference between this version and the previous attempt in the cover letter (or after the tree-dashes as a comment). * es/format-patch-rangediff: format-patch: allow --range-diff to apply to a lone-patch format-patch: add --creation-factor tweak for --range-diff format-patch: teach --range-diff to respect -v/--reroll-count format-patch: extend --range-diff to accept revision range format-patch: add --range-diff option to embed diff in cover letter range-diff: relieve callers of low-level configuration burden range-diff: publish default creation factor range-diff: respect diff_option.file rather than assuming 'stdout'
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由 Junio C Hamano 提交于
"git format-patch" learned a new "--interdiff" option to explain the difference between this version and the previous atttempt in the cover letter (or after the tree-dashes as a comment). * es/format-patch-interdiff: format-patch: allow --interdiff to apply to a lone-patch log-tree: show_log: make commentary block delimiting reusable interdiff: teach show_interdiff() to indent interdiff format-patch: teach --interdiff to respect -v/--reroll-count format-patch: add --interdiff option to embed diff in cover letter format-patch: allow additional generated content in make_cover_letter()
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由 Junio C Hamano 提交于
Lift code from GitHub to restrict delta computation so that an object that exists in one fork is not made into a delta against another object that does not appear in the same forked repository. * cc/delta-islands: pack-objects: move 'layer' into 'struct packing_data' pack-objects: move tree_depth into 'struct packing_data' t5320: tests for delta islands repack: add delta-islands support pack-objects: add delta-islands support pack-objects: refactor code into compute_layer_order() Add delta-islands.{c,h}
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由 Junio C Hamano 提交于
"git interpret-trailers" and its underlying machinery had a buggy code that attempted to ignore patch text after commit log message, which triggered in various codepaths that will always get the log message alone and never get such an input. * jk/trailer-fixes: append_signoff: use size_t for string offsets sequencer: ignore "---" divider when parsing trailers pretty, ref-filter: format %(trailers) with no_divider option interpret-trailers: allow suppressing "---" divider interpret-trailers: tighten check for "---" patch boundary trailer: pass process_trailer_opts to trailer_info_get() trailer: use size_t for iterating trailer list trailer: use size_t for string offsets
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由 Junio C Hamano 提交于
The color output support for recently introduced "range-diff" command got tweaked a bit. * sb/range-diff-colors: range-diff: indent special lines as context range-diff: make use of different output indicators diff.c: add --output-indicator-{new, old, context} diff.c: rewrite emit_line_0 more understandably diff.c: omit check for line prefix in emit_line_0 diff: use emit_line_0 once per line diff.c: add set_sign to emit_line_0 diff.c: reorder arguments for emit_line_ws_markup diff.c: simplify caller of emit_line_0 t3206: add color test for range-diff --dual-color test_decode_color: understand FAINT and ITALIC
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由 Junio C Hamano 提交于
When creating a thin pack, which allows objects to be made into a delta against another object that is not in the resulting pack but is known to be present on the receiving end, the code learned to take advantage of the reachability bitmap; this allows the server to send a delta against a base beyond the "boundary" commit. * jk/pack-delta-reuse-with-bitmap: pack-objects: reuse on-disk deltas for thin "have" objects pack-bitmap: save "have" bitmap from walk t/perf: add perf tests for fetches from a bitmapped server t/perf: add infrastructure for measuring sizes t/perf: factor out percent calculations t/perf: factor boilerplate out of test_perf
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由 Junio C Hamano 提交于
The unpack_trees() API used in checking out a branch and merging walks one or more trees along with the index. When the cache-tree in the index tells us that we are walking a tree whose flattened contents is known (i.e. matches a span in the index), as linearly scanning a span in the index is much more efficient than having to open tree objects recursively and listing their entries, the walk can be optimized, which is done in this topic. * nd/unpack-trees-with-cache-tree: Document update for nd/unpack-trees-with-cache-tree cache-tree: verify valid cache-tree in the test suite unpack-trees: add missing cache invalidation unpack-trees: reuse (still valid) cache-tree from src_index unpack-trees: reduce malloc in cache-tree walk unpack-trees: optimize walking same trees with cache-tree unpack-trees: add performance tracing trace.h: support nested performance tracing
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由 Junio C Hamano 提交于
The code for computing history reachability has been shuffled, obtained a bunch of new tests to cover them, and then being improved. * ds/reachable: commit-reach: correct accidental #include of C file commit-reach: use can_all_from_reach commit-reach: make can_all_from_reach... linear commit-reach: replace ref_newer logic test-reach: test commit_contains test-reach: test can_all_from_reach_with_flags test-reach: test reduce_heads test-reach: test get_merge_bases_many test-reach: test is_descendant_of test-reach: test in_merge_bases test-reach: create new test tool for ref_newer commit-reach: move can_all_from_reach_with_flags upload-pack: generalize commit date cutoff upload-pack: refactor ok_to_give_up() upload-pack: make reachable() more generic commit-reach: move commit_contains from ref-filter commit-reach: move ref_newer from remote.c commit.h: remove method declarations commit-reach: move walk methods from commit.c
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由 Junio C Hamano 提交于
"git submodule update" is getting rewritten piece-by-piece into C. * sb/submodule-update-in-c: submodule--helper: introduce new update-module-mode helper submodule--helper: replace connect-gitdir-workingtree by ensure-core-worktree builtin/submodule--helper: factor out method to update a single submodule builtin/submodule--helper: store update_clone information in a struct builtin/submodule--helper: factor out submodule updating git-submodule.sh: rename unused variables git-submodule.sh: align error reporting for update mode to use path
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由 Junio C Hamano 提交于
Fixes to "git rerere" corner cases, especially when conflict markers cannot be parsed in the file. * tg/rerere: rerere: recalculate conflict ID when unresolved conflict is committed rerere: teach rerere to handle nested conflicts rerere: return strbuf from handle path rerere: factor out handle_conflict function rerere: only return whether a path has conflicts or not rerere: fix crash with files rerere can't handle rerere: add documentation for conflict normalization rerere: mark strings for translation rerere: wrap paths in output in sq rerere: lowercase error messages rerere: unify error messages when read_cache fails
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由 Junio C Hamano 提交于
When there are too many packfiles in a repository (which is not recommended), looking up an object in these would require consulting many pack .idx files; a new mechanism to have a single file that consolidates all of these .idx files is introduced. * ds/multi-pack-index: (32 commits) pack-objects: consider packs in multi-pack-index midx: test a few commands that use get_all_packs treewide: use get_all_packs packfile: add all_packs list midx: fix bug that skips midx with alternates midx: stop reporting garbage midx: mark bad packed objects multi-pack-index: store local property multi-pack-index: provide more helpful usage info midx: clear midx on repack packfile: skip loading index if in multi-pack-index midx: prevent duplicate packfile loads midx: use midx in approximate_object_count midx: use existing midx when writing new one midx: use midx in abbreviation calculations midx: read objects from multi-pack-index config: create core.multiPackIndex setting midx: write object offsets midx: write object id fanout chunk midx: write object ids in a chunk ...
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由 Junio C Hamano 提交于
Updated plan to repurpose the "-l" option to "git branch". * jk/branch-l-1-repurpose: doc/git-branch: remove obsolete "-l" references branch: make "-l" a synonym for "--list"
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由 Junio C Hamano 提交于
Developer aid. * tg/conflict-marker-size: .gitattributes: add conflict-marker-size for relevant files
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由 Junio C Hamano 提交于
Build tweak. * ts/doc-build-manpage-xsl-quietly: Documentation/Makefile: make manpage-base-url.xsl generation quieter
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由 Junio C Hamano 提交于
"git rev-list --stdin </dev/null" used to be an error; it now shows no output without an error. "git rev-list --stdin --default HEAD" still falls back to the given default when nothing is given on the standard input. * jk/rev-list-stdin-noop-is-ok: rev-list: make empty --stdin not an error
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