Git 2.34 Release Notes ====================== Updates since Git 2.33 ---------------------- UI, Workflows & Features * Pathname expansion (like "~username/") learned a way to specify a location relative to Git installation (e.g. its $sharedir which is $(prefix)/share), with "%(prefix)". * Use `ort` instead of `recursive` as the default merge strategy. * The userdiff pattern for "java" language has been updated. * "git rebase" by default skips changes that are equivalent to commits that are already in the history the branch is rebased onto; give messages when this happens to let the users be aware of skipped commits, and also teach them how to tell "rebase" to keep duplicated changes. * The advice message that "git cherry-pick" gives when it asks conflicted replay of a commit to be resolved by the end user has been updated. * After "git clone --recurse-submodules", all submodules are cloned but they are not by default recursed into by other commands. With submodule.stickyRecursiveClone configuration set, submodule.recurse configuration is set to true in a repository created by "clone" with "--recurse-submodules" option. * The logic for auto-correction of misspelt subcommands learned to go interactive when the help.autocorrect configuration variable is set to 'prompt'. * "git maintenance" scheduler learned to use systemd timers as a possible backend. * "git diff --submodule=diff" showed failure from run_command() when trying to run diff inside a submodule, when the user manually removes the submodule directory. * "git bundle unbundle" learned to show progress display. * In cone mode, the sparse-index code path learned to remove ignored files (like build artifacts) outside the sparse cone, allowing the entire directory outside the sparse cone to be removed, which is especially useful when the sparse patterns change. * Taking advantage of the CGI interface, http-backend has been updated to enable protocol v2 automatically when the other side asks for it. * The credential-cache helper has been adjusted to Windows. * The error in "git help no-such-git-command" is handled better. * The unicode character width table (used for output alignment) has been updated. * The ref iteration code used to optionally allow dangling refs to be shown, which has been tightened up. Performance, Internal Implementation, Development Support etc. * "git bisect" spawned "git show-branch" only to pretty-print the title of the commit after checking out the next version to be tested; this has been rewritten in C. * "git add" can work better with the sparse index. * Support for ancient versions of cURL library (pre 7.19.4) has been dropped. * A handful of tests that assumed implementation details of files backend for refs have been cleaned up. * trace2 logs learned to show parent process name to see in what context Git was invoked. * Loading of ref tips to prepare for common ancestry negotiation in "git fetch-pack" has been optimized by taking advantage of the commit graph when available. * Remind developers that the userdiff patterns should be kept simple and permissive, assuming that the contents they apply are always syntactically correct. * The current implementation of GIT_TEST_FAIL_PREREQS is broken in that checking for the lack of a prerequisite would not work. Avoid the use of "if ! test_have_prereq X" in a test script. * The revision traversal API has been optimized by taking advantage of the commit-graph, when available, to determine if a commit is reachable from any of the existing refs. * "git fetch --quiet" optimization to avoid useless computation of info that will never be displayed. * Callers from older advice_config[] based API has been updated to use the newer advice_if_enabled() and advice_enabled() API. * Teach "test_pause" and "debug" helpers to allow using the HOME and TERM environment variables the user usually uses. * "make INSTALL_STRIP=-s install" allows the installation step to use "install -s" to strip the binaries as they get installed. * Code that handles large number of refs in the "git fetch" code path has been optimized. * The reachability bitmap file used to be generated only for a single pack, but now we've learned to generate bitmaps for history that span across multiple packfiles. * The code to make "git grep" recurse into submodules has been updated to migrate away from the "add submodule's object store as an alternate object store" mechanism (which is suboptimal). * The tracing of process ancestry information has been enhanced. * Reduce number of write(2) system calls while sending the ref advertisement. * Update the build procedure to use the "-pedantic" build when DEVELOPER makefile macro is in effect. * Large part of "git submodule add" gets rewritten in C. * The run-command API has been updated so that the callers can easily ask the file descriptors open for packfiles to be closed immediately before spawning commands that may trigger auto-gc. * An oddball OPTION_ARGUMENT feature has been removed from the parse-options API. * The mergesort implementation used to sort linked list has been optimized. * Remove external declaration of functions that no longer exist. * "git multi-pack-index write --bitmap" learns to propagate the hashcache from original bitmap to resulting bitmap. * CI learns to run the leak sanitizer builds. Fixes since v2.33 ----------------- * Input validation of "git pack-objects --stdin-packs" has been corrected. * Bugfix for common ancestor negotiation recently introduced in "git push" code path. * "git pull" had various corner cases that were not well thought out around its --rebase backend, e.g. "git pull --ff-only" did not stop but went ahead and rebased when the history on other side is not a descendant of our history. The series tries to fix them up. * "git apply" miscounted the bytes and failed to read to the end of binary hunks. * "git range-diff" code clean-up. * "git commit --fixup" now works with "--edit" again, after it was broken in v2.32. * Use upload-artifacts v1 (instead of v2) for 32-bit linux, as the new version has a blocker bug for that architecture. * Checking out all the paths from HEAD during the last conflicted step in "git rebase" and continuing would cause the step to be skipped (which is expected), but leaves MERGE_MSG file behind in $GIT_DIR and confuses the next "git commit", which has been corrected. * Various bugs in "git rebase -r" have been fixed. * mmap() imitation used to call xmalloc() that dies upon malloc() failure, which has been corrected to just return an error to the caller to be handled. * "git diff --relative" segfaulted and/or produced incorrect result when there are unmerged paths. * The delayed checkout code path in "git checkout" etc. were chatty even when --quiet and/or --no-progress options were given. * "git branch -D " used to refuse to remove a broken branch ref that points at a missing commit, which has been corrected. * Build update for Apple clang. * The parser for the "--nl" option of "git column" has been corrected. * "git upload-pack" which runs on the other side of "git fetch" forgot to take the ref namespaces into account when handling want-ref requests. * The sparse-index support can corrupt the index structure by storing a stale and/or uninitialized data, which has been corrected. * Buggy tests could damage repositories outside the throw-away test area we created. We now by default export GIT_CEILING_DIRECTORIES to limit the damage from such a stray test. * Even when running "git send-email" without its own threaded discussion support, a threading related header in one message is carried over to the subsequent message to result in an unwanted threading, which has been corrected. * The output from "git fast-export", when its anonymization feature is in use, showed an annotated tag incorrectly. * Doc update plus improved error reporting. * Recent "diff -m" changes broke "gitk", which has been corrected. * Regression fix. * The "git apply -3" code path learned not to bother the lower level merge machinery when the three-way merge can be trivially resolved without the content level merge. This fixes a regression caused by recent "-3way first and fall back to direct application" change. * The code that optionally creates the *.rev reverse index file has been optimized to avoid needless computation when it is not writing the file out. * "git range-diff -I... " segfaulted, which has been corrected. * The order in which various files that make up a single (conceptual) packfile has been reevaluated and straightened up. This matters in correctness, as an incomplete set of files must not be shown to a running Git. * The "mode" word is useless in a call to open(2) that does not create a new file. Such a call in the files backend of the ref subsystem has been cleaned up. * "git update-ref --stdin" failed to flush its output as needed, which potentially led the conversation to a deadlock. * When "git am --abort" fails to abort correctly, it still exited with exit status of 0, which has been corrected. * Correct nr and alloc members of strvec struct to be of type size_t. * "git stash", where the tentative change involves changing a directory to a file (or vice versa), was confused, which has been corrected. * "git clone" from a repository whose HEAD is unborn into a bare repository didn't follow the branch name the other side used, which is corrected. * "git cvsserver" had a long-standing bug in its authentication code, which has finally been corrected (it is unclear and is a separate question if anybody is seriously using it, though). * "git difftool --dir-diff" mishandled symbolic links. * Sensitive data in the HTTP trace were supposed to be redacted, but we failed to do so in HTTP/2 requests. * "make clean" has been updated to remove leftover .depend/ directories, even when it is not told to use them to compute header dependencies. * Protocol v0 clients can get stuck parsing a malformed feature line. * Other code cleanup, docfix, build fix, etc. (merge f188160be9 ab/bundle-remove-verbose-option later to maint). (merge 8c6b4332b4 rs/close-pack-leakfix later to maint). (merge 51b04c05b7 bs/difftool-msg-tweak later to maint). (merge dd20e4a6db ab/make-compdb-fix later to maint). (merge 6ffb990dc4 os/status-docfix later to maint). (merge 100c2da2d3 rs/p3400-lose-tac later to maint). (merge 76f3b69896 tb/aggregate-ignore-leading-whitespaces later to maint).