Merge branch 'master' of github.com:git/git

* 'master' of github.com:git/git: (51 commits)
  Hopefully the last batch of fixes before 2.44 final
  Git 2.43.2
  A few more fixes before -rc1
  write-or-die: fix the polarity of GIT_FLUSH environment variable
  A few more topics before -rc1
  completion: add and use __git_compute_second_level_config_vars_for_section
  completion: add and use __git_compute_first_level_config_vars_for_section
  completion: complete 'submodule.*' config variables
  completion: add space after config variable names also in Bash 3
  receive-pack: use find_commit_header() in check_nonce()
  ci(linux32): add a note about Actions that must not be updated
  ci: bump remaining outdated Actions versions
  unit-tests: do show relative file paths on non-Windows, too
  receive-pack: use find_commit_header() in check_cert_push_options()
  prune: mark rebase autostash and orig-head as reachable
  sequencer: unset GIT_CHERRY_PICK_HELP for 'exec' commands
  ref-filter.c: sort formatted dates by byte value
  ssh signing: signal an error with a negative return value
  bisect: document command line arguments for "bisect start"
  bisect: document "terms" subcommand more fully
  ...

.github/PULL_REQUEST_TEMPLATE.md

@@ -4,4 +4,7 @@ a mailing list ([email protected]) for code submissions, code reviews, and
 bug reports. Nevertheless, you can use GitGitGadget (https://gitgitgadget.github.io/)
 to conveniently send your Pull Requests commits to our mailing list.
 
+For a single-commit pull request, please *leave the pull request description
+empty*: your commit message itself should describe your changes.
+
 Please read the "guidelines for contributing" linked above!

.github/workflows/check-whitespace.yml

@@ -19,7 +19,7 @@ jobs:
   check-whitespace:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
       with:
         fetch-depth: 0
 

.github/workflows/coverity.yml

@@ -38,7 +38,7 @@ jobs:
       COVERITY_LANGUAGE: cxx
       COVERITY_PLATFORM: overridden-below
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: install minimal Git for Windows SDK
         if: contains(matrix.os, 'windows')
         uses: git-for-windows/setup-git-for-windows-sdk@v1
@@ -98,7 +98,7 @@ jobs:
       # A cache miss will add ~30s to create, but a cache hit will save minutes.
       - name: restore the Coverity Build Tool
         id: cache
-        uses: actions/cache/restore@v3
+        uses: actions/cache/restore@v4
         with:
           path: ${{ runner.temp }}/cov-analysis
           key: cov-build-${{ env.COVERITY_LANGUAGE }}-${{ env.COVERITY_PLATFORM }}-${{ steps.lookup.outputs.hash }}
@@ -141,7 +141,7 @@ jobs:
           esac
       - name: cache the Coverity Build Tool
         if: steps.cache.outputs.cache-hit != 'true'
-        uses: actions/cache/save@v3
+        uses: actions/cache/save@v4
         with:
           path: ${{ runner.temp }}/cov-analysis
           key: cov-build-${{ env.COVERITY_LANGUAGE }}-${{ env.COVERITY_PLATFORM }}-${{ steps.lookup.outputs.hash }}

.github/workflows/main.yml

@@ -63,7 +63,7 @@ jobs:
           echo "skip_concurrent=$skip_concurrent" >>$GITHUB_OUTPUT
       - name: skip if the commit or tree was already tested
         id: skip-if-redundant
-        uses: actions/github-script@v6
+        uses: actions/github-script@v7
         if: steps.check-ref.outputs.enabled == 'yes'
         with:
           github-token: ${{secrets.GITHUB_TOKEN}}
@@ -112,7 +112,7 @@ jobs:
       group: windows-build-${{ github.ref }}
       cancel-in-progress: ${{ needs.ci-config.outputs.skip_concurrent == 'yes' }}
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - uses: git-for-windows/setup-git-for-windows-sdk@v1
     - name: build
       shell: bash
@@ -123,7 +123,7 @@ jobs:
     - name: zip up tracked files
       run: git archive -o artifacts/tracked.tar.gz HEAD
     - name: upload tracked files and build artifacts
-      uses: actions/upload-artifact@v3
+      uses: actions/upload-artifact@v4
       with:
         name: windows-artifacts
         path: artifacts
@@ -140,7 +140,7 @@ jobs:
       cancel-in-progress: ${{ needs.ci-config.outputs.skip_concurrent == 'yes' }}
     steps:
     - name: download tracked files and build artifacts
-      uses: actions/download-artifact@v3
+      uses: actions/download-artifact@v4
       with:
         name: windows-artifacts
         path: ${{github.workspace}}
@@ -157,7 +157,7 @@ jobs:
       run: ci/print-test-failures.sh
     - name: Upload failed tests' directories
       if: failure() && env.FAILED_TEST_ARTIFACTS != ''
-      uses: actions/upload-artifact@v3
+      uses: actions/upload-artifact@v4
       with:
         name: failed-tests-windows
         path: ${{env.FAILED_TEST_ARTIFACTS}}
@@ -173,10 +173,10 @@ jobs:
       group: vs-build-${{ github.ref }}
       cancel-in-progress: ${{ needs.ci-config.outputs.skip_concurrent == 'yes' }}
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - uses: git-for-windows/setup-git-for-windows-sdk@v1
     - name: initialize vcpkg
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
       with:
         repository: 'microsoft/vcpkg'
         path: 'compat/vcbuild/vcpkg'
@@ -212,7 +212,7 @@ jobs:
     - name: zip up tracked files
       run: git archive -o artifacts/tracked.tar.gz HEAD
     - name: upload tracked files and build artifacts
-      uses: actions/upload-artifact@v3
+      uses: actions/upload-artifact@v4
       with:
         name: vs-artifacts
         path: artifacts
@@ -230,7 +230,7 @@ jobs:
     steps:
     - uses: git-for-windows/setup-git-for-windows-sdk@v1
     - name: download tracked files and build artifacts
-      uses: actions/download-artifact@v3
+      uses: actions/download-artifact@v4
       with:
         name: vs-artifacts
         path: ${{github.workspace}}
@@ -248,7 +248,7 @@ jobs:
       run: ci/print-test-failures.sh
     - name: Upload failed tests' directories
       if: failure() && env.FAILED_TEST_ARTIFACTS != ''
-      uses: actions/upload-artifact@v3
+      uses: actions/upload-artifact@v4
       with:
         name: failed-tests-windows
         path: ${{env.FAILED_TEST_ARTIFACTS}}
@@ -297,15 +297,15 @@ jobs:
       runs_on_pool: ${{matrix.vector.pool}}
     runs-on: ${{matrix.vector.pool}}
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - run: ci/install-dependencies.sh
     - run: ci/run-build-and-tests.sh
     - name: print test failures
       if: failure() && env.FAILED_TEST_ARTIFACTS != ''
       run: ci/print-test-failures.sh
     - name: Upload failed tests' directories
       if: failure() && env.FAILED_TEST_ARTIFACTS != ''
-      uses: actions/upload-artifact@v3
+      uses: actions/upload-artifact@v4
       with:
         name: failed-tests-${{matrix.vector.jobname}}
         path: ${{env.FAILED_TEST_ARTIFACTS}}
@@ -317,7 +317,7 @@ jobs:
       CC: clang
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - run: ci/install-dependencies.sh
     - run: ci/run-build-and-minimal-fuzzers.sh
   dockerized:
@@ -342,9 +342,9 @@ jobs:
     runs-on: ubuntu-latest
     container: ${{matrix.vector.image}}
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
       if: matrix.vector.jobname != 'linux32'
-    - uses: actions/checkout@v1
+    - uses: actions/checkout@v1 # cannot be upgraded because Node.js Actions aren't supported in this container
       if: matrix.vector.jobname == 'linux32'
     - run: ci/install-docker-dependencies.sh
     - run: ci/run-build-and-tests.sh
@@ -353,13 +353,13 @@ jobs:
       run: ci/print-test-failures.sh
     - name: Upload failed tests' directories
       if: failure() && env.FAILED_TEST_ARTIFACTS != '' && matrix.vector.jobname != 'linux32'
-      uses: actions/upload-artifact@v3
+      uses: actions/upload-artifact@v4
       with:
         name: failed-tests-${{matrix.vector.jobname}}
         path: ${{env.FAILED_TEST_ARTIFACTS}}
     - name: Upload failed tests' directories
       if: failure() && env.FAILED_TEST_ARTIFACTS != '' && matrix.vector.jobname == 'linux32'
-      uses: actions/upload-artifact@v1
+      uses: actions/upload-artifact@v1 # cannot be upgraded because Node.js Actions aren't supported in this container
       with:
         name: failed-tests-${{matrix.vector.jobname}}
         path: ${{env.FAILED_TEST_ARTIFACTS}}
@@ -373,7 +373,7 @@ jobs:
       group: static-analysis-${{ github.ref }}
       cancel-in-progress: ${{ needs.ci-config.outputs.skip_concurrent == 'yes' }}
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - run: ci/install-dependencies.sh
     - run: ci/run-static-analysis.sh
     - run: ci/check-directional-formatting.bash
@@ -396,7 +396,7 @@ jobs:
         artifact: sparse-20.04
     - name: Install the current `sparse` package
       run: sudo dpkg -i sparse-20.04/sparse_*.deb
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Install other dependencies
       run: ci/install-dependencies.sh
     - run: make sparse
@@ -411,6 +411,6 @@ jobs:
       jobname: Documentation
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - run: ci/install-dependencies.sh
     - run: ci/test-documentation.sh

Documentation/RelNotes/2.43.2.txt

@@ -0,0 +1,37 @@
+Git 2.43.2 Release Notes
+========================
+
+Relative to Git 2.43.1, this release has two important fixes to allow
+"git imap-send" to be built with NO_CURL defined, and to restore the
+forced flushing behaviour when GIT_FLUSH=1 is set.  It also contains
+other, unexciting, fixes that have already been merged to the 'master'
+branch of the development towards the next major release.
+
+Fixes since Git 2.43.1
+----------------------
+
+ * Update to a new feature recently added, "git show-ref --exists".
+
+ * Rename detection logic ignored the final line of a file if it is an
+   incomplete line.
+
+ * "git diff --no-rename A B" did not disable rename detection but did
+   not trigger an error from the command line parser.
+
+ * "git diff --no-index file1 file2" segfaulted while invoking the
+   external diff driver, which has been corrected.
+
+ * Rewrite //-comments to /* comments */ in files whose comments
+   prevalently use the latter.
+
+ * A failed "git tag -s" did not necessarily result in an error
+   depending on the crypto backend, which has been corrected.
+
+ * "git stash" sometimes was silent even when it failed due to
+   unwritable index file, which has been corrected.
+
+ * Recent conversion to allow more than 0/1 in GIT_FLUSH broke the
+   mechanism by flipping what yes/no means by mistake, which has been
+   corrected.
+
+Also contains documentation updates, code clean-ups and minor fixups.

Documentation/RelNotes/2.44.0.txt

@@ -91,6 +91,17 @@ UI, Workflows & Features
    refresh token the same way as credential-cache and
    credential-libsecret backends.
 
+ * Command line completion support (in contrib/) has been
+   updated for "git bisect".
+
+ * "git branch" and friends learned to use the formatted text as
+   sorting key, not the underlying timestamp value, when the --sort
+   option is used with author or committer timestamp with a format
+   specifier (e.g., "--sort=creatordate:format:%H:%M:%S").
+
+ * The command line completion script (in contrib/) learned to
+   complete configuration variable names better.
+
 
 Performance, Internal Implementation, Development Support etc.
 
@@ -151,6 +162,18 @@ Performance, Internal Implementation, Development Support etc.
  * The priority queue test has been migrated to the unit testing
    framework.
 
+ * Setting `feature.experimental` opts the user into multi-pack reuse
+   experiment
+
+ * Squelch node.js 16 deprecation warnings from GitHub Actions CI
+   by updating actions/github-script and actions/checkout that use
+   node.js 20.
+
+ * The mechanism to report the filename in the source code, used by
+   the unit-test machinery, assumed that the compiler expanded __FILE__
+   to the path to the source given to the $(CC), but some compilers
+   give full path, breaking the output.  This has been corrected.
+
 
 Fixes since v2.43
 -----------------
@@ -234,21 +257,18 @@ Fixes since v2.43
    data from commit-graph too early, which has been corrected.
 
  * Update to a new feature recently added, "git show-ref --exists".
-   (merge 0aabeaa562 tc/show-ref-exists-fix later to maint).
 
  * oss-fuzz tests are built and run in CI.
    (merge c4a9cf1df3 js/oss-fuzz-build-in-ci later to maint).
 
  * Rename detection logic ignored the final line of a file if it is an
    incomplete line.
-   (merge 1c5bc6971e en/diffcore-delta-final-line-fix later to maint).
 
  * GitHub CI update.
    (merge 0188b2c8e0 pb/ci-github-skip-logs-for-broken-tests later to maint).
 
  * "git diff --no-rename A B" did not disable rename detection but did
    not trigger an error from the command line parser.
-   (merge 457f96252f rs/parse-options-with-keep-unknown-abbrev-fix later to maint).
 
  * "git archive --remote=<remote>" learned to talk over the smart
    http (aka stateless) transport.
@@ -265,11 +285,9 @@ Fixes since v2.43
 
  * "git diff --no-index file1 file2" segfaulted while invoking the
    external diff driver, which has been corrected.
-   (merge 85a9a63c92 jk/diff-external-with-no-index later to maint).
 
  * Rewrite //-comments to /* comments */ in files whose comments
    prevalently use the latter.
-   (merge de65079d7b jc/comment-style-fixes later to maint).
 
  * Cirrus CI jobs started breaking because we specified version of
    FreeBSD that is no longer available, which has been corrected.
@@ -279,17 +297,37 @@ Fixes since v2.43
    as <ptr, length> with a wrong length, which has been corrected.
    (merge 156e28b36d jh/sparse-index-expand-to-path-fix later to maint).
 
+ * A failed "git tag -s" did not necessarily result in an error
+   depending on the crypto backend, which has been corrected.
+
+ * "git stash" sometimes was silent even when it failed due to
+   unwritable index file, which has been corrected.
+
+ * "git show-ref --verify" did not show things like "CHERRY_PICK_HEAD",
+   which has been corrected.
+
+ * Recent conversion to allow more than 0/1 in GIT_FLUSH broke the
+   mechanism by flipping what yes/no means by mistake, which has been
+   corrected.
+
+ * The sequencer machinery does not use the ref API and instead
+   records names of certain objects it needs for its correct operation
+   in temporary files, which makes these objects susceptible to loss
+   by garbage collection.  These temporary files have been added as
+   starting points for reachability analysis to fix this.
+   (merge bc7f5db896 pw/gc-during-rebase later to maint).
+
+ * "git cherry-pick" invoked during "git rebase -i" session lost
+   the authorship information, which has been corrected.
+   (merge e4301f73ff vn/rebase-with-cherry-pick-authorship later to maint).
+
+ * The code paths that call repo_read_object_file() have been
+   tightened to react to errors.
+   (merge 568459bf5e js/check-null-from-read-object-file later to maint).
+
  * Other code cleanup, docfix, build fix, etc.
    (merge 5aea3955bc rj/clarify-branch-doc-m later to maint).
    (merge 9cce3be2df bk/bisect-doc-fix later to maint).
-   (merge 8f50984cf4 ne/doc-filter-blob-limit-fix later to maint).
-   (merge f10b0989b8 la/strvec-comment-fix later to maint).
    (merge 8430b438f6 vd/fsck-submodule-url-test later to maint).
-   (merge f10031fadd nb/rebase-x-shell-docfix later to maint).
-   (merge af3d2c160f jc/majordomo-to-subspace later to maint).
-   (merge ee9895b0ff sd/negotiate-trace-fix later to maint).
-   (merge 976d0251ce jc/coc-whitespace-fix later to maint).
-   (merge 9023198280 jt/p4-spell-re-with-raw-string later to maint).
-   (merge 36c9c44fa4 tb/pack-bitmap-drop-unused-struct-member later to maint).
-   (merge 19ed0dff8f js/win32-retry-pipe-write-on-enospc later to maint).
    (merge 3cb4384683 jc/t0091-with-unknown-git later to maint).
+   (merge 020456cb74 rs/receive-pack-remove-find-header later to maint).

Documentation/config/feature.txt

@@ -17,6 +17,9 @@ skipping more commits at a time, reducing the number of round trips.
 +
 * `pack.useBitmapBoundaryTraversal=true` may improve bitmap traversal times by
 walking fewer objects.
++
+* `pack.allowPackReuse=multi` may improve the time it takes to create a pack by
+reusing objects from multiple packs instead of just one.
 
 feature.manyFiles::
 	Enable config options that optimize for repos with many files in the