Commit Graph

19037 Commits

Author SHA1 Message Date
Junio C Hamano
67b7017593 Merge branch 'ab/common-main-cleanup'
Code clean-up.

* ab/common-main-cleanup:
  common-main.c: call exit(), don't return
2021-12-22 22:48:11 -08:00
Junio C Hamano
dcaf17c75d Merge branch 'ab/fetch-set-upstream-while-detached'
"git fetch --set-upstream" did not check if there is a current
branch, leading to a segfault when it is run on a detached HEAD,
which has been corrected.

* ab/fetch-set-upstream-while-detached:
  pull, fetch: fix segfault in --set-upstream option
2021-12-22 22:48:10 -08:00
Han-Wen Nienhuys
ed8d1d42d0 t7004: use "test-tool ref-store" for reflog inspection
This makes the test work with reftable.

Signed-off-by: Han-Wen Nienhuys <hanwen@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-22 12:13:02 -08:00
Han-Wen Nienhuys
be49349c72 t7004: create separate tags for different tests
Reftable intentionally keeps reflog data for deleted refs.

This breaks tests that delete and recreate "refs/tags/tag_with_reflog" as traces
of the deletion are left in reflog. To resolve this, use a differently named ref
for each test case.

Signed-off-by: Han-Wen Nienhuys <hanwen@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-22 12:13:01 -08:00
Han-Wen Nienhuys
7b6853a826 t5550: require REFFILES
The dumb HTTP protocol exposes ref storage details as part of the protocol,
so it only works with the FILES refstorage backend

Signed-off-by: Han-Wen Nienhuys <hanwen@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-22 12:00:06 -08:00
Han-Wen Nienhuys
8c21d820e9 t5540: require REFFILES
The dumb HTTP protocol exposes ref storage details as part of the protocol,
so it only works with the FILES refstorage backend

Signed-off-by: Han-Wen Nienhuys <hanwen@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-22 12:00:04 -08:00
Derrick Stolee
408c51f0b4 test-read-cache: remove --table, --expand options
This commit effectively reverts 2782db3 (test-tool: don't force full
index, 2021-03-30) and e2df6c3 (test-read-cache: print cache entries
with --table, 2021-03-30) to remove the --table and --expand options
from 'test-tool read-cache'. The previous changes already removed these
options from the test suite in favor of 'git ls-files --sparse'.

The initial thought of creating these options was to allow for tests to
see additional information with every cache entry. In particular, the
object type is still not mirrored in 'git ls-files'. Since sparse
directory entries always end with a slash, the object type is not
critical to verify the sparse index is enabled. It was thought that it
would be helpful to have additional information, such as flags, but that
was not needed for the FS Monitor integration and hasn't been needed
since.

Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-22 11:42:40 -08:00
Derrick Stolee
c2a2940510 t1091/t3705: remove 'test-tool read-cache --table'
Now that 'git ls-files --sparse' exists, we can use it to verify the
state of a sparse index instead of 'test-tool read-cache table'. Replace
these usages within t1091-sparse-checkout-builtin.sh and
t3705-add-sparse-checkout.sh.

The important changes are due to the different output format. In t3705,
we need to use the '--stage' output to get a file mode and OID, but
it also includes a stage value and drops the object type. This leads
to some differences in how we handle looking for specific entries.

In t1091, the test focuses on enabling the sparse index, so we do not
need the --stage flag to demonstrate how the index changes, and instead
can use a diff.

Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-22 11:42:40 -08:00
Derrick Stolee
3a9a6ac5d9 t1092: replace 'read-cache --table' with 'ls-files --sparse'
Now that 'git ls-files --sparse' exists, we can use it to verify the
state of a sparse index instead of 'test-tool read-cache table'. Replace
these usages within t1092-sparse-checkout-compatibility.sh.

The important changes are due to the different output format. We need to
use the '--stage' output to get a file mode and OID, but it also
includes a stage value and drops the object type. This leads to some
differences in how we handle looking for specific entries.

Some places where we previously looked for no 'tree' entries, we can
instead directly compare the output across the repository with a sparse
index and the one without.

Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-22 11:42:40 -08:00
Derrick Stolee
78087097b8 ls-files: add --sparse option
Existing callers to 'git ls-files' are expecting file names, not
directories. It is best to expand a sparse index to show all of the
contained files in this case.

However, expert users may want to inspect the contents of the index
itself including which directories are sparse. Add a --sparse option to
allow users to request this information.

During testing, I noticed that options such as --modified did not affect
the output when the files in question were outside the sparse-checkout
definition. Tests are added to document this preexisting behavior and
how it remains unchanged with the sparse index and the --sparse option.

Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-22 11:42:40 -08:00
Derrick Stolee
5a4e0547e2 fetch/pull: use the sparse index
The 'git fetch' and 'git pull' commands parse the index in order to
determine if submodules exist. Without command_requires_full_index=0,
this will expand a sparse index, causing slow performance even when
there is no new data to fetch.

The .gitmodules file will never be inside a sparse directory entry, and
even if it was, the index_name_pos() method would expand the sparse
index if needed as we search for the path by name. These commands do not
iterate over the index, which is the typical thing we are careful about
when integrating with the sparse index.

Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-22 11:42:39 -08:00
Han-Wen Nienhuys
57eb368144 test-ref-store: print hash algorithm
This provides a better error message in case SHA256 was inadvertently switched
on through the environment.

Signed-off-by: Han-Wen Nienhuys <hanwen@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-21 22:00:01 -08:00
Junio C Hamano
8d2c37320b Merge branch 'ld/sparse-diff-blame'
Teach diff and blame to work well with sparse index.

* ld/sparse-diff-blame:
  blame: enable and test the sparse index
  diff: enable and test the sparse index
  diff: replace --staged with --cached in t1092 tests
  repo-settings: prepare_repo_settings only in git repos
  test-read-cache: set up repo after git directory
  commit-graph: return if there is no git directory
  git: ensure correct git directory setup with -h
2021-12-21 15:03:17 -08:00
Junio C Hamano
13fa77b689 Merge branch 'ak/protect-any-current-branch'
"git fetch" without the "--update-head-ok" option ought to protect
a checked out branch from getting updated, to prevent the working
tree that checks it out to go out of sync.  The code was written
before the use of "git worktree" got widespread, and only checked
the branch that was checked out in the current worktree, which has
been updated.
(originally called ak/fetch-not-overwrite-any-current-branch)

* ak/protect-any-current-branch:
  branch: protect branches checked out in all worktrees
  receive-pack: protect current branch for bare repository worktree
  receive-pack: clean dead code from update_worktree()
  fetch: protect branches checked out in all worktrees
  worktree: simplify find_shared_symref() memory ownership model
  branch: lowercase error messages
  receive-pack: lowercase error messages
  fetch: lowercase error messages
2021-12-21 15:03:16 -08:00
Junio C Hamano
ee1dc493d1 Merge branch 'fs/ssh-signing-other-keytypes'
The cryptographic signing using ssh keys can specify literal keys
for keytypes whose name do not begin with the "ssh-" prefix by
using the "key::" prefix mechanism (e.g. "key::ecdsa-sha2-nistp256").

* fs/ssh-signing-other-keytypes:
  ssh signing: make sign/amend test more resilient
  ssh signing: support non ssh-* keytypes
2021-12-21 15:03:16 -08:00
Junio C Hamano
d2f0b72759 Merge branch 'fs/ssh-signing-key-lifetime'
Extend the signing of objects with SSH keys and learn to pay
attention to the key validity time range when verifying.

* fs/ssh-signing-key-lifetime:
  ssh signing: verify ssh-keygen in test prereq
  ssh signing: make fmt-merge-msg consider key lifetime
  ssh signing: make verify-tag consider key lifetime
  ssh signing: make git log verify key lifetime
  ssh signing: make verify-commit consider key lifetime
  ssh signing: add key lifetime test prereqs
  ssh signing: use sigc struct to pass payload
  t/fmt-merge-msg: make gpgssh tests more specific
  t/fmt-merge-msg: do not redirect stderr
2021-12-21 15:03:15 -08:00
Junio C Hamano
00cbaf9362 Merge branch 'jk/log-decorate-opts-with-implicit-decorate'
When "git log" implicitly enabled the "decoration" processing
without being explicitly asked with "--decorate" option, it failed
to read and honor the settings given by the "--decorate-refs"
option.

* jk/log-decorate-opts-with-implicit-decorate:
  log: load decorations with --simplify-by-decoration
  log: handle --decorate-refs with userformat "%d"
2021-12-21 15:03:15 -08:00
Junio C Hamano
57f28f4094 Merge branch 'en/rebase-x-wo-git-dir-env'
"git rebase -x" by mistake started exporting the GIT_DIR and
GIT_WORK_TREE environment variables when the command was rewritten
in C, which has been corrected.

* en/rebase-x-wo-git-dir-env:
  sequencer: do not export GIT_DIR and GIT_WORK_TREE for 'exec'
2021-12-21 15:03:15 -08:00
William Sprent
726a228dfb fast-export: fix surprising behavior with --first-parent
The revision traversal machinery typically processes and returns all
children before any parent.  fast-export needs to operate in the
reverse fashion, handling parents before any of their children in
order to build up the history starting from the root commit(s).  This
would be a clear case where we could just use the revision traversal
machinery's "reverse" option to achieve this desired affect.

However, this wasn't what the code did.  It added its own array for
queuing.  The obvious hand-rolled solution would be to just push all
the commits into the array and then traverse afterwards, but it didn't
quite do that either.  It instead attempted to process anything it
could as soon as it could, and once it could, check whether it could
process anything that had been queued.  As far as I can tell, this was
an effort to save a little memory in the case of multiple root commits
since it could process some commits before queueing all of them.  This
involved some helper functions named has_unshown_parent() and
handle_tail().  For typical invocations of fast-export, this
alternative essentially amounted to a hand-rolled method of reversing
the commits -- it was a bunch of work to duplicate the revision
traversal machinery's "reverse" option.

This hand-rolled reversing mechanism is actually somewhat difficult to
reason about.  It takes some time to figure out how it ensures in
normal cases that it will actually process all traversed commits
(rather than just dropping some and not printing anything for them).

And it turns out there are some cases where the code does drop commits
without handling them, and not even printing an error or warning for
the user.  Due to the has_unshown_parent() checks, some commits could
be left in the array at the end of the "while...get_revision()" loop
which would be unprocessed.  This could be triggered for example with
    git fast-export main -- --first-parent
or non-sensical traversal rules such as
    git fast-export main -- --grep=Merge --invert-grep

While most traversals that don't include all parents should likely
trigger errors in fast-export (or at least require being used in
combination with --reference-excluded-parents), the --first-parent
traversal is at least reasonable and it'd be nice if it didn't just drop
commits. It'd also be nice for future readers of the code to have a
simpler "reverse traversal" mechanism. Use the "reverse" option of the
revision traversal machinery to achieve both.

Even for the non-sensical traversal flags like the --grep one above,
this would be an improvement. For example, in that case, the code
previously would have silently truncated history to only those commits
that do not have an ancestor containing "Merge" in their commit message.
After this code change, that case would include all commits without
"Merge" in their commit message -- but any commit that previously had a
"Merge"-mentioning parent would lose that parent
(likely resulting in many new root commits). While the new behavior is
still odd, it is at least understandable given that
--reference-excluded-parents is not the default.

Helped-by: Elijah Newren <newren@gmail.com>
Signed-off-by: William Sprent <williams@unity3d.com>
Reviewed-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-21 12:51:09 -08:00
Josh Steadmon
d3115660b4 branch: add flags and config to inherit tracking
It can be helpful when creating a new branch to use the existing
tracking configuration from the branch point. However, there is
currently not a method to automatically do so.

Teach git-{branch,checkout,switch} an "inherit" argument to the
"--track" option. When this is set, creating a new branch will cause the
tracking configuration to default to the configuration of the branch
point, if set.

For example, if branch "main" tracks "origin/main", and we run
`git checkout --track=inherit -b feature main`, then branch "feature"
will track "origin/main". Thus, `git status` will show us how far
ahead/behind we are from origin, and `git pull` will pull from origin.

This is particularly useful when creating branches across many
submodules, such as with `git submodule foreach ...` (or if running with
a patch such as [1], which we use at $job), as it avoids having to
manually set tracking info for each submodule.

Since we've added an argument to "--track", also add "--track=direct" as
another way to explicitly get the original "--track" behavior ("--track"
without an argument still works as well).

Finally, teach branch.autoSetupMerge a new "inherit" option. When this
is set, "--track=inherit" becomes the default behavior.

[1]: https://lore.kernel.org/git/20180927221603.148025-1-sbeller@google.com/

Signed-off-by: Josh Steadmon <steadmon@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-20 22:40:21 -08:00
Josh Steadmon
a3f40ec4b0 branch: accept multiple upstream branches for tracking
Add a new static variant of install_branch_config() that accepts
multiple remote branch names for tracking. This will be used in an
upcoming commit that enables inheriting the tracking configuration from
a parent branch.

Currently, all callers of install_branch_config() pass only a single
remote. Make install_branch_config() a small wrapper around
install_branch_config_multiple_remotes() so that existing callers do not
need to be changed.

Signed-off-by: Josh Steadmon <steadmon@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-20 22:40:21 -08:00
Junio C Hamano
bd2bc94252 merge: allow to pretend a merge is made into a different branch
When a series of patches for a topic-B depends on having topic-A,
the workflow to prepare the topic-B branch would look like this:

    $ git checkout -b topic-B main
    $ git merge --no-ff --no-edit topic-A
    $ git am <mbox-for-topic-B

When topic-A gets updated, recreating the first merge and rebasing
the rest of the topic-B, all on detached HEAD, is a useful
technique.  After updating topic-A with its new round of patches:

    $ git checkout topic-B
    $ prev=$(git rev-parse 'HEAD^{/^Merge branch .topic-A. into}')
    $ git checkout --detach $prev^1
    $ git merge --no-ff --no-edit topic-A
    $ git rebase --onto HEAD $prev @{-1}^0
    $ git checkout -B @{-1}

This will

 (0) check out the current topic-B.
 (1) find the previous merge of topic-A into topic-B.
 (2) detach the HEAD to the parent of the previous merge.
 (3) merge the updated topic-A to it.
 (4) reapply the patches to rebuild the rest of topic-B.
 (5) update topic-B with the result.

without contaminating the reflog of topic-B too much.  topic-B@{1}
is the "logically previous" state before topic-A got updated, for
example.  At (4), comparison (e.g. range-diff) between HEAD and
@{-1} is a meaningful way to sanity check the result, and the same
can be done at (5) by comparing topic-B and topic-B@{1}.

But there is one glitch.  The merge into the detached HEAD done in
the step (3) above gives us "Merge branch 'topic-A' into HEAD", and
does not say "into topic-B".

Teach the "--into-name=<branch>" option to "git merge" and its
underlying "git fmt-merge-message", to pretend as if we were merging
into <branch>, no matter what branch we are actually merging into,
when they prepare the merge message.  The pretend name honors the
usual "into <target>" suppression mechanism, which can be seen in
the tests added here.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-20 14:55:02 -08:00
René Scharfe
dc2c44fbb1 grep/pcre2: use PCRE2_UTF even with ASCII patterns
compile_pcre2_pattern() currently uses the option PCRE2_UTF only for
patterns with non-ASCII characters.  Patterns with ASCII wildcards can
match non-ASCII strings, though.  Without that option PCRE2 mishandles
UTF-8 input, though -- it matches parts of multi-byte characters.  Fix
that by using PCRE2_UTF even for ASCII-only patterns.

This is a remake of the reverted ae39ba431a (grep/pcre2: fix an edge
case concerning ascii patterns and UTF-8 data, 2021-10-15).  The change
to the condition and the test are simplified and more targeted.

Original-patch-by: Hamza Mahfooz <someguy@effective-light.com>
Signed-off-by: René Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-20 12:45:02 -08:00
Jerry Zhang
34d607032c git-apply: skip threeway in add / rename cases
Certain invocations of "git apply --3way" will attempt threeway and
fail due to missing objects, even though git is able to fall back on
apply_fragments and apply the patch successfully with a return value
of 0. To fix, return early from try_threeway() in the following
cases:

 - When the patch is a rename and no lines have changed. In this
   case, "git diff" doesn't record the blob info, so 3way is neither
   possible nor necessary.

 - When the patch is an addition and there is no add/add conflict,
   i.e. direct_to_threeway is false. In this case, threeway will
   fail since the preimage is not in cache, but isn't necessary
   anyway since there is no conflict.

This fixes a few unecessary error messages when applying these kinds
of patches with --3way.

It also fixes a reported issue where applying a concatenation of
several git produced patches will fail when those patches involve a
deletion followed by creation of the same file.  Add a test for this
case too.  (test provided by <i@zenithal.me>)

Signed-off-by: Jerry Zhang <jerry@skydio.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-20 12:39:45 -08:00
Derrick Stolee
47ca93d071 repack: make '--quiet' disable progress
While testing some ideas in 'git repack', I ran it with '--quiet' and
discovered that some progress output was still shown. Specifically, the
output for writing the multi-pack-index showed the progress.

The 'show_progress' variable in cmd_repack() is initialized with
isatty(2) and is not modified at all by the '--quiet' flag. The
'--quiet' flag modifies the po_args.quiet option which is translated
into a '--quiet' flag for the 'git pack-objects' child process. However,
'show_progress' is used to directly send progress information to the
multi-pack-index writing logic which does not use a child process.

The fix here is to modify 'show_progress' to be false if po_opts.quiet
is true, and isatty(2) otherwise. This new expectation simplifies a
later condition that checks both.

Update the documentation to make it clear that '-q' will disable all
progress in addition to ensuring the 'git pack-objects' child process
will receive the flag.

Use 'test_terminal' to check that this works to get around the isatty(2)
check.

Helped-by: Jeff King <peff@peff.net>
Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-20 11:59:17 -08:00
Derrick Stolee
e4d0c11c04 repack: respect kept objects with '--write-midx -b'
Historically, we needed a single packfile in order to have reachability
bitmaps. This introduced logic that when 'git repack' had a '-b' option
that we should stop sending the '--honor-pack-keep' option to the 'git
pack-objects' child process, ensuring that we create a packfile
containing all reachable objects.

In the world of multi-pack-index bitmaps, we no longer need to repack
all objects into a single pack to have valid bitmaps. Thus, we should
continue sending the '--honor-pack-keep' flag to 'git pack-objects'.

The fix is very simple: only disable the flag when writing bitmaps but
also _not_ writing the multi-pack-index.

This opens the door to new repacking strategies that might want to keep
some historical set of objects in a stable pack-file while only
repacking more recent objects.

To test, create a new 'test_subcommand_inexact' helper that is more
flexible than 'test_subcommand'. This allows us to look for the
--honor-pack-keep flag without over-indexing on the exact set of
arguments.

Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-20 11:58:31 -08:00
René Scharfe
e6a9bc0c60 t4202: fix patternType setting in --invert-grep test
Actually use extended regexes as indicated in the comment.

Signed-off-by: René Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-17 16:59:53 -08:00
René Scharfe
794c000267 log: let --invert-grep only invert --grep
The option --invert-grep is documented to filter out commits whose
messages match the --grep filters.  However, it also affects the
header matches (--author, --committer), which is not intended.

Move the handling of that option to grep.c, as only the code there can
distinguish between matches in the header from those in the message
body.  If --invert-grep is given then enable extended expressions (not
the regex type, we just need git grep's --not to work), negate the body
patterns and check if any of them match by piggy-backing on the
collect_hits mechanism of grep_source_1().

Collecting the matches in struct grep_opt is a bit iffy, but with
"last_shown" we have a precedent for writing state information to that
struct.

Reported-by: Dotan Cohen <dotancohen@gmail.com>
Signed-off-by: René Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-17 14:13:08 -08:00
Junio C Hamano
6b2edaa378 t4204 is not sanitizer clean at all
Earlier we marked that this patch-id test is leak-sanitizer clean,
but if we read the test script carefully, it is merely because we
have too many invocations of commands in the "git log" family on the
upstream side of the pipe, hiding breakages from them.

Split the pipeline so that breakages from these commands can be
caught (not limited to aborts due to leak-sanitizer) and unmark
the script as not passing the test with leak-sanitizer in effect.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-16 15:18:31 -08:00
Joel Holdsworth
70c0d55349 git-p4: resolve RCS keywords in bytes not utf-8
RCS keywords are strings that are replaced with information from
Perforce. Examples include $Date$, $Author$, $File$, $Change$ etc.

Perforce resolves these by expanding them with their expanded values
when files are synced, but Git's data model requires these expanded
values to be converted back into their unexpanded form.

Previously, git-p4.py would implement this behaviour through the use of
regular expressions. However, the regular expression substitution was
applied using decoded strings i.e. the content of incoming commit diffs
was first decoded from bytes into UTF-8, processed with regular
expressions, then converted back to bytes.

Not only is this behaviour inefficient, but it is also a cause of a
common issue caused by text files containing invalid UTF-8 data. For
files created in Windows, CP1252 Smart Quote Characters (0x93 and 0x94)
are seen fairly frequently. These codes are invalid in UTF-8, so if the
script encountered any file containing them, on Python 2 the symbols
will be corrupted, and on Python 3 the script will fail with an
exception.

This patch replaces this decoding/encoding with bytes object regular
expressions, so that the substitution is performed directly upon the
source data with no conversions.

A test for smart quote handling has been added to the
t9810-git-p4-rcs.sh test suite.

Signed-off-by: Joel Holdsworth <jholdsworth@nvidia.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-16 14:06:36 -08:00
Ævar Arnfjörð Bjarmason
ca7990cea5 stash: don't show "git stash push" usage on bad "git stash" usage
Change the usage message emitted by "git stash --invalid-option" to
emit usage information for "git stash" in general, and not just for
the "push" command. I.e. before:

    $ git stash --invalid-option
    error: unknown option `invalid-option'
    usage: git stash [push [-p|--patch] [-k|--[no-]keep-index] [-q|--quiet]
                     [-u|--include-untracked] [-a|--all] [-m|--message <message>]
                     [--] [<pathspec>...]]
    [...]

After:

    $ git stash --invalid-option
    error: unknown option `invalid-option'
    usage: git stash list [<options>]
       or: git stash show [<options>] [<stash>]
       or: git stash drop [-q|--quiet] [<stash>]
       or: git stash ( pop | apply ) [--index] [-q|--quiet] [<stash>]
       or: git stash branch <branchname> [<stash>]
       or: git stash clear
       or: git stash [push [-p|--patch] [-S|--staged] [-k|--[no-]keep-index] [-q|--quiet]
                     [-u|--include-untracked] [-a|--all] [-m|--message <message>]
                     [--pathspec-from-file=<file> [--pathspec-file-nul]]
                     [--] [<pathspec>...]]
       or: git stash save [-p|--patch] [-S|--staged] [-k|--[no-]keep-index] [-q|--quiet]
                     [-u|--include-untracked] [-a|--all] [<message>]
    [...]

That we emitted the usage for just "push" in the case of the
subcommand not being explicitly specified was an unintentional
side-effect of how it was implemented. When it was converted to C in
d553f538b8 (stash: convert push to builtin, 2019-02-25) the pattern
of having per-subcommand usage information was rightly continued. The
"git-stash.sh" shellscript did not have that, and always printed the
equivalent of "git_stash_usage".

But in doing so the case of push being implicit and explicit was
conflated. A variable was added to track this in 8c3713cede (stash:
eliminate crude option parsing, 2020-02-17), but it did not update the
usage output accordingly.

This still leaves e.g. "git stash push -h" emitting the
"git_stash_usage" output, instead of "git_stash_push_usage". That
should be fixed, but is a much deeper misbehavior in parse_options()
not being aware of subcommands at all. I.e. in how
PARSE_OPT_KEEP_UNKNOWN and PARSE_OPT_NO_INTERNAL_HELP combine in
commands such as "git stash".

Perhaps PARSE_OPT_KEEP_UNKNOWN should imply
PARSE_OPT_NO_INTERNAL_HELP, or better yet parse_options() should be
extended to fully handle these subcommand cases that we handle
manually in "git stash", "git commit-graph", "git multi-pack-index"
etc. All of those musings would be a much bigger change than this
isolated fix though, so let's leave that for some other time.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-16 14:03:46 -08:00
徐沛文 (Aleen)
9e7e41bf19 am: support --allow-empty to record specific empty patches
This option helps to record specific empty patches in the middle
of an am session, which does create empty commits only when:

    1. the index has not changed
    2. lacking a branch

When the index has changed, "--allow-empty" will create a non-empty
commit like passing "--continue" or "--resolved".

Signed-off-by: 徐沛文 (Aleen) <aleen42@vip.qq.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-15 17:04:19 -08:00
徐沛文 (Aleen)
7c096b8d61 am: support --empty=<option> to handle empty patches
Since that the command 'git-format-patch' can include patches of
commits that emit no changes, the 'git-am' command should also
support an option, named as '--empty', to specify how to handle
those empty patches. In this commit, we have implemented three
valid options ('stop', 'drop' and 'keep').

Signed-off-by: 徐沛文 (Aleen) <aleen42@vip.qq.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-15 17:04:18 -08:00
Elijah Newren
45c5e47048 sparse-checkout: add sanity-checks on initial sparsity state
Most sparse-checkout subcommands (list, add, reapply) only make sense
when already in a sparse state.  Add a quick check that will error out
early if this is not the case.

Also document with a comment why we do not exit early in `disable` even
when core.sparseCheckout starts as false.

Reviewed-by: Derrick Stolee <dstolee@microsoft.com>
Reviewed-by: Victoria Dye <vdye@github.com>
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-15 11:48:21 -08:00
Junio C Hamano
b174a3c014 Merge branch 'hn/allow-bogus-oid-in-ref-tests'
The test helper for refs subsystem learned to write bogus and/or
nonexistent object name to refs to simulate error situations we
want to test Git in.

* hn/allow-bogus-oid-in-ref-tests:
  t1430: create valid symrefs using test-helper
  t1430: remove refs using test-tool
  refs: introduce REF_SKIP_REFNAME_VERIFICATION flag
  refs: introduce REF_SKIP_OID_VERIFICATION flag
  refs: update comment.
  test-ref-store: plug memory leak in cmd_delete_refs
  test-ref-store: parse symbolic flag constants
  test-ref-store: remove force-create argument for create-reflog
2021-12-15 09:39:54 -08:00
Junio C Hamano
15209c8612 Merge branch 're/color-default-reset'
"default" and "reset" colors have been added to our palette.

* re/color-default-reset:
  color: allow colors to be prefixed with "reset"
  color: support "default" to restore fg/bg color
  color: add missing GIT_COLOR_* white/black constants
2021-12-15 09:39:53 -08:00
Junio C Hamano
63a2e8b41e Merge branch 'ew/test-wo-fsync'
Allow running our tests while disabling fsync.

* ew/test-wo-fsync:
  tests: disable fsync everywhere
2021-12-15 09:39:52 -08:00
Junio C Hamano
e1d9288267 Merge branch 'ds/sparse-deep-pattern-checkout-fix'
The sparse-index/sparse-checkout feature had a bug in its use of
the matching code to determine which path is in or outside the
sparse checkout patterns.

* ds/sparse-deep-pattern-checkout-fix:
  unpack-trees: use traverse_path instead of name
  t1092: add deeper changes during a checkout
2021-12-15 09:39:50 -08:00
Junio C Hamano
557b2bd3a5 Merge branch 'js/test-initial-branch-override-cleanup'
Many tests that used to need GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
mechanism to force "git" to use 'master' as the default name for
the initial branch no longer need it; the use of the mechanism from
them have been removed.

* js/test-initial-branch-override-cleanup:
  tests: set GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME only when needed
2021-12-15 09:39:49 -08:00
Junio C Hamano
986eb34b71 Merge branch 'es/worktree-chatty-to-stderr'
"git worktree add" showed "Preparing worktree" message to the
standard output stream, but when it failed, the message from die()
went to the standard error stream.  Depending on the order the
stdio streams are flushed at the program end, this resulted in
confusing output.  It has been corrected by sending all the chatty
messages to the standard error stream.

* es/worktree-chatty-to-stderr:
  git-worktree.txt: add missing `-v` to synopsis for `worktree list`
  worktree: send "chatty" messages to stderr
2021-12-15 09:39:49 -08:00
Junio C Hamano
250ca49b4f Merge branch 'hn/reflog-tests'
Prepare tests on ref API to help testing reftable backends.

* hn/reflog-tests:
  refs/debug: trim trailing LF from reflog message
  test-ref-store: tweaks to for-each-reflog-ent format
  t1405: check for_each_reflog_ent_reverse() more thoroughly
  test-ref-store: don't add newline to reflog message
  show-branch: show reflog message
2021-12-15 09:39:49 -08:00
Junio C Hamano
6ba65f4ac3 Merge branch 'es/pretty-describe-more'
Extend "git log --format=%(describe)" placeholder to allow passing
selected command-line options to the underlying "git describe"
command.

* es/pretty-describe-more:
  pretty: add abbrev option to %(describe)
  pretty: add tag option to %(describe)
  pretty.c: rework describe options parsing for better extensibility
2021-12-15 09:39:48 -08:00
Junio C Hamano
832ec72c3e Merge branch 'ab/run-command'
API clean-up.

* ab/run-command:
  run-command API: remove "env" member, always use "env_array"
  difftool: use "env_array" to simplify memory management
  run-command API: remove "argv" member, always use "args"
  run-command API users: use strvec_push(), not argv construction
  run-command API users: use strvec_pushl(), not argv construction
  run-command tests: use strvec_pushv(), not argv assignment
  run-command API users: use strvec_pushv(), not argv assignment
  upload-archive: use regular "struct child_process" pattern
  worktree: stop being overly intimate with run_command() internals
2021-12-15 09:39:47 -08:00
Junio C Hamano
9c5bef3b35 Merge branch 'hn/t1404-df-limitation-is-ref-files-only'
Test update.

* hn/t1404-df-limitation-is-ref-files-only:
  t1404: mark directory/file conflict tests with REFFILES
2021-12-15 09:39:47 -08:00
Junio C Hamano
4ce498baa3 Merge branch 'en/zdiff3'
"Zealous diff3" style of merge conflict presentation has been added.

* en/zdiff3:
  update documentation for new zdiff3 conflictStyle
  xdiff: implement a zealous diff3, or "zdiff3"
2021-12-15 09:39:47 -08:00
Junio C Hamano
62329d336f Merge branch 'ds/trace2-regions-in-tests'
The default setting for trace2 event nesting was too low to cause
test failures, which is worked around by bumping it up in the test
framework.

* ds/trace2-regions-in-tests:
  t/t*: remove custom GIT_TRACE2_EVENT_NESTING
  test-lib.sh: set GIT_TRACE2_EVENT_NESTING
2021-12-15 09:39:46 -08:00
Junio C Hamano
285907901c Merge branch 'fs/test-prereq'
The test framework learns to list unsatisfied test prerequisites,
and optionally error out when prerequisites that are expected to be
satisfied are not.

* fs/test-prereq:
  test-lib: make BAIL_OUT() work in tests and prereq
  test-lib: introduce required prereq for test runs
  test-lib: show missing prereq summary
2021-12-15 09:39:46 -08:00
Junio C Hamano
f346fcb62a Merge branch 'ab/mark-leak-free-tests-even-more'
More tests are marked as leak-free.

* ab/mark-leak-free-tests-even-more:
  leak tests: mark some fast-import tests as passing with SANITIZE=leak
  leak tests: mark some config tests as passing with SANITIZE=leak
  leak tests: mark some status tests as passing with SANITIZE=leak
  leak tests: mark some clone tests as passing with SANITIZE=leak
  leak tests: mark some add tests as passing with SANITIZE=leak
  leak tests: mark some diff tests as passing with SANITIZE=leak
  leak tests: mark some apply tests as passing with SANITIZE=leak
  leak tests: mark some notes tests as passing with SANITIZE=leak
  leak tests: mark some update-index tests as passing with SANITIZE=leak
  leak tests: mark some rev-parse tests as passing with SANITIZE=leak
  leak tests: mark some rev-list tests as passing with SANITIZE=leak
  leak tests: mark some misc tests as passing with SANITIZE=leak
  leak tests: mark most gettext tests as passing with SANITIZE=leak
  leak tests: mark "sort" test as passing SANITIZE=leak
  leak tests: mark a read-tree test as passing SANITIZE=leak
2021-12-15 09:39:46 -08:00
Junio C Hamano
a4bbd13be3 Merge branch 'hn/reftable'
The "reftable" backend for the refs API, without integrating into
the refs subsystem, has been added.

* hn/reftable:
  Add "test-tool dump-reftable" command.
  reftable: add dump utility
  reftable: implement stack, a mutable database of reftable files.
  reftable: implement refname validation
  reftable: add merged table view
  reftable: add a heap-based priority queue for reftable records
  reftable: reftable file level tests
  reftable: read reftable files
  reftable: generic interface to tables
  reftable: write reftable files
  reftable: a generic binary tree implementation
  reftable: reading/writing blocks
  Provide zlib's uncompress2 from compat/zlib-compat.c
  reftable: (de)serialization for the polymorphic record type.
  reftable: add blocksource, an abstraction for random access reads
  reftable: utility functions
  reftable: add error related functionality
  reftable: add LICENSE
  hash.h: provide constants for the hash IDs
2021-12-15 09:39:45 -08:00
Jerry Zhang
324eb77ee7 git-apply: add --allow-empty flag
Some users or scripts will pipe "git diff"
output to "git apply" when replaying diffs
or commits. In these cases, they will rely
on the return value of "git apply" to know
whether the diff was applied successfully.

However, for empty commits, "git apply" will
fail. This complicates scripts since they
have to either buffer the diff and check
its length, or run diff again with "exit-code",
essentially doing the diff twice.

Add the "--allow-empty" flag to "git apply"
which allows it to handle both empty diffs
and empty commits created by "git format-patch
--always" by doing nothing and returning 0.

Add tests for both with and without --allow-empty.

Signed-off-by: Jerry Zhang <jerry@skydio.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-13 14:30:25 -08:00
Eric Sunshine
d73f5cfa89 chainlint.sed: stop splitting "(..." into separate lines "(" and "..."
Because `sed` is line-oriented, for ease of implementation, when
chainlint.sed encounters an opening subshell in which the first command
is cuddled with the "(", it splits the line into two lines: one
containing only "(", and the other containing whatever follows "(".
This allows chainlint.sed to get by with a single set of regular
expressions for matching shell statements rather than having to
duplicate each expression (one set for matching non-cuddled statements,
and one set for matching cuddled statements).

However, although syntactically and semantically immaterial, this
transformation has no value to test authors and might even confuse them
into thinking that the linter is misbehaving by inserting (whitespace)
line-noise into the shell code it is validating. Moreover, it also
allows an implementation detail of chainlint.sed to seep into the
chainlint self-test "expect" files, which potentially makes it difficult
to reuse the self-tests should a more capable chainlint ever be
developed.

To address these concerns, stop splitting cuddled "(..." into two lines.

Note that, as an implementation artifact, due to sed's line-oriented
nature, this change inserts a blank line at output time just before the
"(..." line is emitted. It would be possible to suppress this blank line
but doing so would add a fair bit of complexity to chainlint.sed.
Therefore, rather than suppressing the extra blank line, the Makefile's
`check-chainlint` target which runs the chainlint self-tests is instead
modified to ignore blank lines when comparing chainlint output against
the self-test "expect" output. This is a reasonable compromise for two
reasons. First, the purpose of the chainlint self-tests is to verify
that the ?!AMP?! annotations are being correctly added; precise
whitespace is immaterial. Second, by necessity, chainlint.sed itself
already throws away all blank lines within subshells since, when
checking for a broken &&-chain, it needs to check the final _statement_
in a subshell, not the final _line_ (which might be blank), thus it has
never made any attempt to precisely reproduce blank lines in its output.

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-13 14:15:29 -08:00
Eric Sunshine
31da22d1fd chainlint.sed: swallow comments consistently
When checking for broken a &&-chain, chainlint.sed knows that the final
statement in a subshell should not end with `&&`, so it takes care to
make a distinction between the final line which is an actual statement
and any lines which may be mere comments preceding the closing ')'. As
such, it swallows comment lines so that they do not interfere with the
&&-chain check.

However, since `sed` does not provide any sort of real recursion,
chainlint.sed only checks &&-chains in subshells one level deep; it
doesn't do any checking in deeper subshells or in `{...}` blocks within
subshells. Furthermore, on account of potential implementation
complexity, it doesn't check &&-chains within `case` arms.

Due to an oversight, it also doesn't swallow comments inside deep
subshells, `{...}` blocks, or `case` statements, which makes its output
inconsistent (swallowing comments in some cases but not others).
Unfortunately, this inconsistency seeps into the chainlint self-test
"expect" files, which potentially makes it difficult to reuse the
self-tests should a more capable chainlint ever be developed. Therefore,
teach chainlint.sed to consistently swallow comments in all cases.

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-13 14:15:29 -08:00
Eric Sunshine
34ba05c296 chainlint.sed: stop throwing away here-doc tags
The purpose of chainlint is to highlight problems it finds in test code
by inserting annotations at the location of each problem. Arbitrarily
eliding bits of the code it is checking is not helpful, yet this is
exactly what chainlint.sed does by cavalierly and unnecessarily dropping
the here-doc operator and tag; i.e. `cat <<TAG` becomes simply `cat` in
the output. This behavior can make it more difficult for the test writer
to align the annotated output of chainlint.sed with the original test
code. Address this by retaining here-doc tags.

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-13 14:15:29 -08:00
Eric Sunshine
22597af97d chainlint.sed: don't mistake << word in string as here-doc operator
Tighten here-doc recognition to prevent it from being fooled by text
which looks like a here-doc operator but happens merely to be the
content of a string, such as this real-world case from t7201:

    echo "<<<<<<< ours" &&
    echo ourside &&
    echo "=======" &&
    echo theirside &&
    echo ">>>>>>> theirs"

This problem went unnoticed because chainlint.sed is not a real parser,
but rather applies heuristics to pretend to understand shell code. In
this case, it saw what it thought was a here-doc operator (`<< ours`),
and fell off the end of the test looking for the closing tag "ours"
which it never found, thus swallowed the remainder of the test without
checking it for &&-chain breakage.

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-13 14:15:29 -08:00
Eric Sunshine
2d53614210 chainlint.sed: make here-doc "<<-" operator recognition more POSIX-like
According to POSIX, "<<" and "<<-" are distinct shell operators. For the
latter to be recognized, no whitespace is allowed before the "-", though
whitespace is allowed after the operator. However, the chainlint
patterns which identify here-docs are both too loose and too tight,
incorrectly allowing whitespace between "<<" and "-" but disallowing it
between "-" and the here-doc tag. Fix the patterns to better match
POSIX.

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-13 14:15:29 -08:00
Eric Sunshine
5be30d0cd3 chainlint.sed: drop subshell-closing ">" annotation
chainlint.sed inserts a ">" annotation at the beginning of a line to
signal that its heuristics have identified an end-of-subshell. This was
useful as a debugging aid during development of the script, but it has
no value to test writers and might even confuse them into thinking that
the linter is misbehaving by inserting line-noise into the shell code it
is validating. Moreover, its presence also potentially makes it
difficult to reuse the chainlint self-test "expect" output should a more
capable linter ever be developed. Therefore, drop the ">" annotation.

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-13 14:15:29 -08:00
Eric Sunshine
0d7131763e chainlint.sed: drop unnecessary distinction between ?!AMP?! and ?!SEMI?!
>From inception, when chainlint.sed encountered a line using semicolon to
separate commands rather than `&&`, it would insert a ?!SEMI?!
annotation at the beginning of the line rather ?!AMP?! even though the
&&-chain is also broken by the semicolon. Given a line such as:

    ?!SEMI?! cmd1; cmd2 &&

the ?!SEMI?! annotation makes it easier to see what the problem is than
if the output had been:

    ?!AMP?! cmd1; cmd2 &&

which might confuse the test author into thinking that the linter is
broken (since the line clearly ends with `&&`).

However, now that the ?!AMP?! an ?!SEMI?! annotations are inserted at
the point of breakage rather than at the beginning of the line, and
taking into account that both represent a broken &&-chain, there is
little reason to distinguish between the two. Using ?!AMP?! alone is
sufficient to point the test author at the problem. For instance, in:

    cmd1; ?!AMP?! cmd2 &&
    cmd3

it is clear that the &&-chain is broken between `cmd1` and `cmd2`.
Likewise, in:

    cmd1 && cmd2 ?!AMP?!
    cmd3

it is clear that the &&-chain is broken between `cmd2` and `cmd3`.
Finally, in:

    cmd1; ?!AMP?! cmd2 ?!AMP?!
    cmd3

it is clear that the &&-chain is broken between each command.

Hence, there is no longer a good reason to make a distinction between a
broken &&-chain due to a semicolon and a broken chain due to a missing
`&&` at end-of-line. Therefore, drop the ?!SEMI?! annotation and use
?!AMP?! exclusively.

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-13 14:15:29 -08:00
Eric Sunshine
3865a7e36d chainlint.sed: tolerate harmless ";" at end of last line in block
chainlint.sed flags ";" when used as a command terminator since it
breaks the &&-chain, thus can allow failures to go undetected. However,
when a command terminated by ";" is the last command in the body of a
compound statement, such as `command-2` in:

    if test $# -gt 1
    then
        command-1 &&
        command-2;
    fi

then the ";" is harmless and the exit code from `command-2` is passed
through untouched and becomes the exit code of the compound statement,
as if the ";" was not present. Therefore, tolerate a trailing ";" in
this position rather than complaining about broken &&-chain.

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-13 14:15:29 -08:00
Eric Sunshine
fbd992b61b chainlint.sed: improve ?!SEMI?! placement accuracy
When chainlint.sed detects commands separated by a semicolon rather than
by `&&`, it places a ?!SEMI?! annotation at the beginning of the line.
However, this is an unusual location for programmers accustomed to error
messages (from compilers, for instance) indicating the exact point of
the problem. Therefore, relocate the ?!SEMI?! annotation to the location
of the semicolon in order to better direct the programmer's attention to
the source of the problem.

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-13 14:15:29 -08:00
Eric Sunshine
db8c7a1cc0 chainlint.sed: improve ?!AMP?! placement accuracy
When chainlint.sed detects a broken &&-chain, it places an ?!AMP?!
annotation at the beginning of the line. However, this is an unusual
location for programmers accustomed to error messages (from compilers,
for instance) indicating the exact point of the problem. Therefore,
relocate the ?!AMP?! annotation to the end of the line in order to
better direct the programmer's attention to the source of the problem.

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-13 14:15:29 -08:00
Eric Sunshine
f30c1d5eb1 t/Makefile: optimize chainlint self-test
Rather than running `chainlint` and `diff` once per self-test -- which
may become expensive as more tests are added -- instead run `chainlint`
a single time over all tests bodies collectively and compare the result
to the collective "expected" output.

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-13 14:15:28 -08:00
Eric Sunshine
0cca54c706 t/chainlint/one-liner: avoid overly intimate chainlint.sed knowledge
The purpose of chainlint.sed is to detect &&-chain breakage only within
subshells (one level deep); it doesn't bother checking for top-level
&&-chain breakage since the &&-chain checker built into t/test-lib.sh
should detect broken &&-chains outside of subshells by making them
magically exit with code 117.

Unfortunately, one of the chainlint.sed self-tests has overly intimate
knowledge of this particular division of responsibilities and only cares
about what chainlint.sed itself will produce, while ignoring the fact
that a more all-encompassing linter would complain about a broken
&&-chain outside the subshell. This makes it difficult to re-use the
test with a more capable chainlint implementation should one ever be
developed. Therefore, adjust the test and its "expected" output to
avoid being specific to the tunnel-vision of this one implementation.

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-13 14:15:28 -08:00
Eric Sunshine
1ad0780a77 t/chainlint/*.test: generalize self-test commentary
The purpose of chainlint.sed is to detect &&-chain breakage only within
subshells (one level deep); it doesn't bother checking for top-level
&&-chain breakage since the &&-chain checker built into t/test-lib.sh
should detect broken &&-chains outside of subshells by making them
magically exit with code 117. However, this division of labor may not
always be the case if a more capable chainlint implementation is ever
developed. Beyond that, due to being sed-based and due to its use of
heuristics, chainlint.sed has several limitations (such as being unable
to detect &&-chain breakage in subshells more than one level deep since
it only manually emulates recursion into a subshell).

Some of the comments in the chainlint self-tests unnecessarily reflect
the limitations of chainlint.sed even though those limitations are not
what is being tested. Therefore, simplify and generalize the comments to
explain only what is being tested, thus ensuring that they won't become
outdated if a more capable chainlint is ever developed.

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-13 14:15:28 -08:00
Eric Sunshine
5459bc1bbb t/chainlint/*.test: fix invalid test cases due to mixing quote types
The chainlint self-test code snippets are supposed to represent the body
of a test_expect_success() or test_expect_failure(), yet the contents of
a few tests would have caused the shell to report syntax errors had they
been real test bodies due to the mix of single- and double-quotes.
Although chainlint.sed, with its simplistic heuristics, is blind to this
problem, a future more robust chainlint implementation might not have
such a limitation. Therefore, stop mixing quote types haphazardly in
those tests and unify quoting throughout. While at it, drop chunks of
tests which merely repeat what is already tested elsewhere but with
alternative quotes.

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-13 14:15:28 -08:00
Eric Sunshine
925d7304d2 t/chainlint/*.test: don't use invalid shell syntax
The chainlint self-test code snippets are supposed to represent the body
of a test_expect_success() or test_expect_failure(), yet the contents of
these tests would have caused the shell to report syntax errors had they
been real test bodies. Although chainlint.sed, with its simplistic
heuristics, is blind to these syntactic problems, a future more robust
chainlint implementation might not have such a limitation, so make these
snippets syntactically valid.

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-13 14:15:28 -08:00
Eric Sunshine
0c51d6b4ae t6000-t9999: detect and signal failure within loop
Failures within `for` and `while` loops can go unnoticed if not detected
and signaled manually since the loop itself does not abort when a
contained command fails, nor will a failure necessarily be detected when
the loop finishes since the loop returns the exit code of the last
command it ran on the final iteration, which may not be the command
which failed. Therefore, detect and signal failures manually within
loops using the idiom `|| return 1` (or `|| exit 1` within subshells).

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Reviewed-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-13 10:29:48 -08:00
Eric Sunshine
d0fd993137 t5000-t5999: detect and signal failure within loop
Failures within `for` and `while` loops can go unnoticed if not detected
and signaled manually since the loop itself does not abort when a
contained command fails, nor will a failure necessarily be detected when
the loop finishes since the loop returns the exit code of the last
command it ran on the final iteration, which may not be the command
which failed. Therefore, detect and signal failures manually within
loops using the idiom `|| return 1` (or `|| exit 1` within subshells).

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Reviewed-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-13 10:29:48 -08:00
Eric Sunshine
cbe1d9d630 t4000-t4999: detect and signal failure within loop
Failures within `for` and `while` loops can go unnoticed if not detected
and signaled manually since the loop itself does not abort when a
contained command fails, nor will a failure necessarily be detected when
the loop finishes since the loop returns the exit code of the last
command it ran on the final iteration, which may not be the command
which failed. Therefore, detect and signal failures manually within
loops using the idiom `|| return 1` (or `|| exit 1` within subshells).

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Reviewed-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-13 10:29:48 -08:00
Eric Sunshine
db5875aa9f t0000-t3999: detect and signal failure within loop
Failures within `for` and `while` loops can go unnoticed if not detected
and signaled manually since the loop itself does not abort when a
contained command fails, nor will a failure necessarily be detected when
the loop finishes since the loop returns the exit code of the last
command it ran on the final iteration, which may not be the command
which failed. Therefore, detect and signal failures manually within
loops using the idiom `|| return 1` (or `|| exit 1` within subshells).

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Reviewed-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-13 10:29:48 -08:00
Eric Sunshine
efe26b9ee0 tests: simplify by dropping unnecessary for loops
Rather than manually looping over a set of items and plugging those
items into a template string which is printed repeatedly, achieve the
same effect by taking advantage of `printf` which loops over its
arguments automatically.

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Reviewed-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-13 10:29:48 -08:00
Eric Sunshine
03949e33f5 tests: apply modern idiom for exiting loop upon failure
Rather than maintaining a flag indicating a failure within a loop and
aborting the test when the loop ends if the flag is set, modern practice
is to signal the failure immediately by exiting the loop early via
`return 1` (or `exit 1` if inside a subshell). Simplify these loops by
following the modern idiom.

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Reviewed-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-13 10:29:48 -08:00
Eric Sunshine
77b1d9f355 tests: apply modern idiom for signaling test failure
Simplify the way these tests signal failure by employing the modern
idiom of making the `if` or `case` statement resolve to false when an
error is detected.

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Reviewed-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-13 10:29:48 -08:00
Eric Sunshine
7abcbcb7ea tests: fix broken &&-chains in {...} groups
The top-level &&-chain checker built into t/test-lib.sh causes tests to
magically exit with code 117 if the &&-chain is broken. However, it has
the shortcoming that the magic does not work within `{...}` groups,
`(...)` subshells, `$(...)` substitutions, or within bodies of compound
statements, such as `if`, `for`, `while`, `case`, etc. `chainlint.sed`
partly fills in the gap by catching broken &&-chains in `(...)`
subshells, but bugs can still lurk behind broken &&-chains in the other
cases.

Fix broken &&-chains in `{...}` groups in order to reduce the number of
possible lurking bugs.

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Reviewed-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-13 10:29:48 -08:00
Eric Sunshine
c576868eaf tests: fix broken &&-chains in $(...) command substitutions
The top-level &&-chain checker built into t/test-lib.sh causes tests to
magically exit with code 117 if the &&-chain is broken. However, it has
the shortcoming that the magic does not work within `{...}` groups,
`(...)` subshells, `$(...)` substitutions, or within bodies of compound
statements, such as `if`, `for`, `while`, `case`, etc. `chainlint.sed`
partly fills in the gap by catching broken &&-chains in `(...)`
subshells, but bugs can still lurk behind broken &&-chains in the other
cases.

Fix broken &&-chains in `$(...)` command substitutions in order to
reduce the number of possible lurking bugs.

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Reviewed-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-13 10:29:48 -08:00
Eric Sunshine
74d2f5695d tests: fix broken &&-chains in compound statements
The top-level &&-chain checker built into t/test-lib.sh causes tests to
magically exit with code 117 if the &&-chain is broken. However, it has
the shortcoming that the magic does not work within `{...}` groups,
`(...)` subshells, `$(...)` substitutions, or within bodies of compound
statements, such as `if`, `for`, `while`, `case`, etc. `chainlint.sed`
partly fills in the gap by catching broken &&-chains in `(...)`
subshells, but bugs can still lurk behind broken &&-chains in the other
cases.

Fix broken &&-chains in compound statements in order to reduce the
number of possible lurking bugs.

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Reviewed-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-13 10:29:48 -08:00
Eric Sunshine
0849541268 tests: use test_write_lines() to generate line-oriented output
Take advantage of test_write_lines() to generate line-oriented output
rather than using for-loops or a series of `echo` commands. Not only is
test_write_lines() a natural fit for such a task, but there is less
opportunity for a broken &&-chain.

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Reviewed-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-13 10:29:48 -08:00
Eric Sunshine
020b813f40 tests: simplify construction of large blocks of text
Take advantage of here-docs to create large blocks of text rather than
using a series of `echo` statements. Not only are here-docs a natural
fit for such a task, but there is less opportunity for a broken
&&-chain.

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Reviewed-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-13 10:29:48 -08:00
Eric Sunshine
2041b0e8e8 t9107: use shell parameter expansion to avoid breaking &&-chain
This test intentionally breaks the &&-chain when using `expr` to parse
"[<path>]:<ref>" since the pattern matching operation will return 1
(failure) when <path> is empty even though an empty <path> is legitimate
in this test and should not cause the test to fail. However, it is
possible to parse the input without breaking the &&-chain by using shell
parameter expansion (i.e. `${i%%...}`). Other ways to avoid the problem
would be `{ expr $i : ... ||:; }` or test_might_fail(), however,
parameter expansion seems simplest.

IMPLEMENTATION NOTE

The rewritten `if` expression:

    if test "$ref" = "${ref#refs/remotes/}"`; then continue; fi

is perhaps a bit subtle. At first glance, it looks like it will
`continue` the loop if $ref starts with "refs/remotes/", but in fact
it's the opposite: the loop will `continue` if $ref does not start with
"refs/remotes/".

In the original, `expr` would only match if the ref started with
"refs/remotes/", and $ref would end up empty if it didn't, so `test -z`
would `continue` the loop if the ref did not start with "refs/remotes/".

With parameter expansion, ${ref#refs/remotes/} attempts to strip
"refs/remotes/" from $ref. If it fails, meaning that $ref does not start
with "refs/remotes/", then the expansion will just be $ref unchanged,
and it will `continue` the loop. On the other hand, if stripping
succeeds, meaning that $ref begins with "refs/remotes/", then the
expansion will be the value of $ref with "refs/remotes/" removed, hence
`continue` will not be taken.

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Reviewed-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-13 10:29:48 -08:00
Eric Sunshine
efe47c83b2 t6300: make %(raw:size) --shell test more robust
This test populates its `expect` file solely by appending content but
fails to ensure that the file starts out empty. The test succeeds only
because no earlier test populated a file of the exact same name, however
this is an accident waiting to happen. Make the test more robust by
ensuring that it contains exactly the intended content.

While at it, simplify the implementation via a straightforward `sed`
application and by avoiding dropping out of the single-quote context
within the test body (thus eliminating a hard-to-digest combination of
apostrophes and backslashes).

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Reviewed-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-13 10:29:48 -08:00
Eric Sunshine
e57ea501d0 t5516: drop unnecessary subshell and command invocation
To create its "expect" file, this test pipes into `sort` the output of
`git for-each-ref` and a copy of that same output but with a minor
textual transformation applied. To do so, it employs a subshell and
commands `cat` and `sed` even though the same result can be accomplished
by `sed` alone (without a subshell).

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Reviewed-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-13 10:29:48 -08:00
Eric Sunshine
88511d271b t4202: clarify intent by creating expected content less cleverly
Several tests assign the output of `$(...)` command substitution to an
"expect" variable, taking advantage of the fact that `$(...)` folds out
the final line terminator while leaving internal line terminators
intact. They do this because the "actual" string with which "expect"
will be compared is shaped the same way. However, this intent (having
internal line terminators, but no final line terminator) is not
necessarily obvious at first glance and may confuse casual readers. The
intent can be made more obvious by using `printf` instead, with which
line termination is stated clearly:

    printf "sixth\nthird"

In fact, many other tests in this script already use `printf` for
precisely this purpose, thus it is an established pattern. Therefore,
convert these tests to employ `printf`, as well.

While at it, modernize the tests to use test_cmp() to compare the
expected and actual output rather than using the semi-deprecated
`verbose test "$x" = "$y"`.

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Reviewed-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-13 10:29:48 -08:00
Eric Sunshine
fe13adb17b t1020: avoid aborting entire test script when one test fails
Although `exit 1` is the proper way to signal a test failure from within
a subshell, its use outside any subshell should be avoided since it
aborts the entire script rather than aborting only the failed test.
Instead, a simple `return 1` is the proper idiom for signaling failure
outside a subshell since it aborts only the test in question, not the
entire script.

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Reviewed-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-13 10:29:48 -08:00
Eric Sunshine
afb31ad95f t1010: fix unnoticed failure on Windows
On Microsoft Windows, a directory name should never end with a period.
Quoting from Microsoft documentation[1]:

    Do not end a file or directory name with a space or a period.
    Although the underlying file system may support such names, the
    Windows shell and user interface does not.

Naming a directory with a trailing period is indeed perilous:

    % git init foo
    % cd foo
    % mkdir a.
    % git status
    warning: could not open directory 'a./': No such file or directory

The t1010 "setup" test:

    for d in a a. a0
    do
        mkdir "$d" && echo "$d/one" >"$d/one" &&
        git add "$d"
    done &&

runs afoul of this Windows limitation, as can be observed when running
the test verbosely:

    error: open("a./one"): No such file or directory
    error: unable to index file 'a./one'
    fatal: adding files failed

The reason this problem has gone unnoticed for so long is twofold.
First, the failed `git add` is swallowed silently because the loop is
not terminated explicitly by `|| return 1` to signal the failure.
Second, none of the tests in this script care about the literal
directory names ("a", "a.", "a0") or the specific number of tree
entries. They care instead about the order of entries in the tree, and
that the tree synthesized in the index and created by `git write-tree`
matches the tree created by the output of `git ls-tree` fed into `git
mktree`, thus the absence of "a./one" has no impact on the tests.

Skipping these tests on Windows by, for instance, checking the
FUNNYNAMES predicate would avoid the problem, however, the funny-looking
name is not what is being tested here. Rather, the tests are about
checking that `git mktree` produces stable results for various input
conditions, such as when the input order is not consistent or when an
object is missing.

Therefore, resolve the problem simply by using a directory name which is
legal on Windows and sorts the same as "a.". While at it, add the
missing `|| return 1` to the loop body in order to catch this sort of
problem in the future.

[1]: https://docs.microsoft.com/en-us/windows/win32/fileio/naming-a-file

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Reviewed-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-13 10:29:38 -08:00
Junio C Hamano
3e1dbfa135 Merge branch 'en/rebase-x-fix'
"git rebase -x" added an unnecessary 'exec' instructions before
'noop', which has been corrected.

* en/rebase-x-fix:
  sequencer: avoid adding exec commands for non-commit creating commands
2021-12-10 14:35:16 -08:00
Junio C Hamano
bb47eee9df Merge branch 'em/missing-pager'
When a non-existent program is given as the pager, we tried to
reuse an uninitialized child_process structure and crashed, which
has been fixed.

* em/missing-pager:
  pager: fix crash when pager program doesn't exist
2021-12-10 14:35:15 -08:00
Junio C Hamano
670703e9d6 Merge branch 'mp/absorb-submodule-git-dir-upon-deinit'
"git submodule deinit" for a submodule whose .git metadata
directory is embedded in its working tree refused to work, until
the submodule gets converted to use the "absorbed" form where the
metadata directory is stored in superproject, and a gitfile at the
top-level of the working tree of the submodule points at it.  The
command is taught to convert such submodules to the absorbed form
as needed.

* mp/absorb-submodule-git-dir-upon-deinit:
  submodule: absorb git dir instead of dying on deinit
2021-12-10 14:35:15 -08:00
Junio C Hamano
b8148376a2 Merge branch 'hn/create-reflog-simplify'
A small simplification of API.

* hn/create-reflog-simplify:
  refs: drop force_create argument of create_reflog API
2021-12-10 14:35:13 -08:00
Junio C Hamano
97991dfab7 Merge branch 'jk/t7006-sigpipe-tests-fix'
The function to cull a child process and determine the exit status
had two separate code paths for normal callers and callers in a
signal handler, and the latter did not yield correct value when the
child has caught a signal.  The handling of the exit status has
been unified for these two code paths.  An existing test with
flakiness has also been corrected.

* jk/t7006-sigpipe-tests-fix:
  t7006: simplify exit-code checks for sigpipe tests
  t7006: clean up SIGPIPE handling in trace2 tests
  run-command: unify signal and regular logic for wait_or_whine()
2021-12-10 14:35:13 -08:00
Junio C Hamano
f0850875fd Merge branch 'vd/sparse-reset'
Various operating modes of "git reset" have been made to work
better with the sparse index.

* vd/sparse-reset:
  unpack-trees: improve performance of next_cache_entry
  reset: make --mixed sparse-aware
  reset: make sparse-aware (except --mixed)
  reset: integrate with sparse index
  reset: expand test coverage for sparse checkouts
  sparse-index: update command for expand/collapse test
  reset: preserve skip-worktree bit in mixed reset
  reset: rename is_missing to !is_in_reset_tree
2021-12-10 14:35:12 -08:00
Junio C Hamano
7b11728a7b Merge branch 'ab/checkout-branch-info-leakfix'
Leakfix.

* ab/checkout-branch-info-leakfix:
  checkout: fix "branch info" memory leaks
2021-12-10 14:35:09 -08:00
Junio C Hamano
b0b5337876 Merge branch 'jk/t5319-midx-corruption-test-deflake'
Test fix.

* jk/t5319-midx-corruption-test-deflake:
  t5319: corrupt more bytes of the midx checksum
2021-12-10 14:35:08 -08:00
Junio C Hamano
03194a1afa Merge branch 'tw/var-default-branch'
"git var GIT_DEFAULT_BRANCH" is a way to see what name is used for
the newly created branch if "git init" is run.

* tw/var-default-branch:
  var: add GIT_DEFAULT_BRANCH variable
2021-12-10 14:35:07 -08:00
Junio C Hamano
1c39c822a9 Merge branch 'jk/strbuf-addftime-seconds-since-epoch'
The "--date=format:<strftime>" gained a workaround for the lack of
system support for a non-local timezone to handle "%s" placeholder.

* jk/strbuf-addftime-seconds-since-epoch:
  strbuf_addftime(): handle "%s" manually
2021-12-10 14:35:07 -08:00
Junio C Hamano
b5e7f5e5b1 Merge branch 'if/redact-packfile-uri'
Redact the path part of packfile URI that appears in the trace output.

* if/redact-packfile-uri:
  http-fetch: redact url on die() message
  fetch-pack: redact packfile urls in traces
2021-12-10 14:35:04 -08:00
Junio C Hamano
6d1e149ac0 Merge branch 'gc/remote-with-fewer-static-global-variables'
Code clean-up to eventually allow information on remotes defined
for an arbitrary repository to be read.

* gc/remote-with-fewer-static-global-variables:
  remote: die if branch is not found in repository
  remote: remove the_repository->remote_state from static methods
  remote: use remote_state parameter internally
  remote: move static variables into per-repository struct
  t5516: add test case for pushing remote refspecs
2021-12-10 14:35:02 -08:00
Junio C Hamano
5396d7b298 Merge branch 'vd/sparse-sparsity-fix-on-read'
Ensure that the sparseness of the in-core index matches the
index.sparse configuration specified by the repository immediately
after the on-disk index file is read.

* vd/sparse-sparsity-fix-on-read:
  sparse-index: update do_read_index to ensure correct sparsity
  sparse-index: add ensure_correct_sparsity function
  sparse-index: avoid unnecessary cache tree clearing
  test-read-cache.c: prepare_repo_settings after config init
2021-12-10 14:35:01 -08:00
Fabian Stelzer
50992f96c5 ssh signing: verify ssh-keygen in test prereq
Do a full ssh signing, find-principals and verify operation in the test
prereq's to make sure ssh-keygen works as expected. Only generating the
keys and verifying its presence is not sufficient in some situations.
One example was ssh-keygen creating unusable ssh keys in cygwin because
of unsafe default permissions for the key files. The other a broken
openssh 8.7 that segfaulted on any find-principals operation. This
extended prereq check avoids future test breakages in case ssh-keygen or
any environment behaviour changes.

Signed-off-by: Fabian Stelzer <fs@gigacodes.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-09 13:38:04 -08:00
Fabian Stelzer
122842fd93 ssh signing: make fmt-merge-msg consider key lifetime
Set the payload_type for check_signature() when generating merge messages to
verify merged tags signatures key lifetimes.
Implements the same tests as for verify-commit.

Signed-off-by: Fabian Stelzer <fs@gigacodes.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-09 13:38:04 -08:00
Fabian Stelzer
dd3aa418aa ssh signing: make verify-tag consider key lifetime
Set the payload_type for check_signature() when calling verify-tag.
Implements the same tests as for verify-commit.

Signed-off-by: Fabian Stelzer <fs@gigacodes.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-09 13:38:04 -08:00
Fabian Stelzer
4bbf3780ff ssh signing: make git log verify key lifetime
Set the payload_type for check_signature() when calling git log.
Implements the same tests as for verify-commit.

Signed-off-by: Fabian Stelzer <fs@gigacodes.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-09 13:38:04 -08:00