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* vd/doc-merge-tree-x-option:
Documentation/git-merge-tree.txt: document -X
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Add an entry in the 'merge-tree' builtin documentation for
-X/--strategy-option (added in 6a4c9e7b32 (merge-tree: add -X strategy
option, 2023-09-24)). The same option is documented for 'merge', 'rebase',
'revert', etc. in their respective Documentation/ files, so let's do the
same for 'merge-tree'.
Signed-off-by: Victoria Dye <vdye@github.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Reflow a paragraph in the documentation source without any effect
to the formatted text.
* ds/doc-config-reflow:
config.txt: perform some minor reformatting
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Reformat a few lines a bit, to utilize the available horizontal space better.
There are no changes to the actual contents of the documentation.
Signed-off-by: Dragan Simic <dsimic@manjaro.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The conditional inclusion mechanism for configuration files learned
to switch on the hostname.
* ie/config-includeif-hostname:
config: learn the "hostname:" includeIf condition
t: add a test helper for getting hostname
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Currently, customizing the configuration depending on the machine running
git has to be done manually.
Add support for a new includeIf keyword "hostname:" to conditionally
include configuration files depending on the hostname.
Signed-off-by: Ignacio Encinas <ignacio@iencinas.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Avoid relying on whether the system running the test has "hostname"
installed or not, and expose the output of xgethostname through
test-tool.
Signed-off-by: Ignacio Encinas <ignacio@iencinas.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Split libgit.a out to a separate git-std-lib tor easier reuse.
* cw/git-std-lib:
SQUASH??? get rid of apparent debugging crufts
test-stdlib: show that git-std-lib is independent
git-std-lib: introduce Git Standard Library
pager: include stdint.h because uintmax_t is used
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Add a test file that calls some functions defined in git-std-lib.a
object files to showcase that they do not reference missing objects and
that, together with git-stub-lib.a, git-std-lib.a can stand on its own.
As described in test-stdlib.c, this can probably be removed once we have
unit tests.
The variable TEST_PROGRAMS is moved lower in the Makefile after
NO_POSIX_GOODIES is defined in config.make.uname. TEST_PROGRAMS isn't
used earlier than that so this change should be safe.
Signed-off-by: Calvin Wan <calvinwan@google.com>
Helped-by: Phillip Wood <phillip.wood123@gmail.com>
Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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This commit contains:
- Makefile rules for git-std-lib.a
- code and Makefile rules for git-stub-lib.a
- description and rationale of the above in Documentation/
Quoting from documentation introduced in this commit:
The Git Standard Library intends to serve as the foundational library
and root dependency that other libraries in Git will be built off
of. That is to say, suppose we have libraries X and Y; a user that
wants to use X and Y would need to include X, Y, and this Git Standard
Library.
Code demonstrating the use of git-std-lib.a and git-stub-lib.a will be
in a subsequent commit.
Signed-off-by: Calvin Wan <calvinwan@google.com>
Helped-by: Phillip Wood <phillip.wood123@gmail.com>
Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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pager.h uses uintmax_t but does not include stdint.h. Therefore, add
this include statement.
This was discovered when writing a stub pager.c file.
Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Calvin Wan <calvinwan@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Command line completion support (in contrib/) has been
updated for a few commands to complete directory names where a
directory name is expected.
* bk/complete-dirname-for-am-and-format-patch:
completion: dir-type optargs for am, format-patch
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Signed-off-by: Britton Leo Kerin <britton.kerin@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Command line completion support (in contrib/) has been taught to
avoid offering revision names as candidates to "git send-email" when
the command is used to send pre-generated files.
* bk/complete-send-email:
completion: don't complete revs when --no-format-patch
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In this case the user has specifically said they don't want send-email
to run format-patch so revs aren't valid argument completions (and it's
likely revs and dirs do have some same names or prefixes as in
Documentation/MyFirstContribution.txt 'psuh').
Signed-off-by: Britton Leo Kerin <britton.kerin@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Code clean-up.
* jc/rerere-cleanup:
rerere: modernize use of empty strbuf
rerere: try_merge() should use LL_MERGE_ERROR when it means an error
rerere: fix comment on handle_file() helper
rerere: simplify check_one_conflict() helper function
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Back when the code in the handle_conflict() helper function that
hashes the contents stored in the strbuf "one" and "two", including
its terminating NUL, was written, a freshly initialized strbuf had
NULL in its .buf member, so it was an error to say
update(one.buf, one.len + 1)
which was corrected by b4833a2c (rerere: Fix use of an empty
strbuf.buf, 2007-09-26).
But soon after that, b315c5c0 (strbuf change: be sure ->buf is never
ever NULL., 2007-09-27) introduced strbuf_slopbuf mechanism that
ensures that .buf member of a strbuf is *never* NULL. A freshly
initialized and empty strbuf uses a static piece of memory that has
NUL in it, with its .len member set to 0, so we can always safely
use from offset 0 of .buf[] array for (one.len + 1) bytes.
Simplify the code by essentially reverting the b4833a2c, whose fix
is no longer necessary in the modern world order.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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When the preimage or the postimage files cannot be read, the
try_merge() helper function returns LL_MERGE_CONFLICT. To all of
its callers, this does not make them do wrong things per-se, as they
are only checking if the result is 0 and LL_MERGE_CONFLICT is not 0.
But it is an error if we fail to read the input we expect to be able
to read; return LL_MERGE_ERROR instead. This does not change any
behaviour---it just makes the code use the "correct" constant to
signal an error.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The return value from handle_path() is returned to the caller of
handle_file() in the normal cases, and it is not the number of
hunks. It is just a normal C Boolean, "do we (!=0) or do we not (0)
have conflict?" plus "a negative return value signals an error".
And all the callers of handle_file() understands its return value as
such. Update the comment to match the reality after 221444f5
(rerere: only return whether a path has conflicts or not,
2018-08-05), which apparently forgot to update this comment when it
turned the returned value of this function from the number of
conflict hunks to a boolean plus error.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The helper function is responsible for inspecting the index and
deciding if the path is merged, is conflicted in a way that we would
want to handle, or is conflicted in a way that we cannot handle.
Currently, only conflicts with both stage #2 and stage #3 are
handled, but eventually we would want to be able to deal with
delete-modify conflicts (i.e. only one of stages #2 and #3 exist).
Streamline the implementation of the function to make it easier to
extend.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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"git send-email" learned to separate its reports on each message it
sends out with an extra blank line in between.
Comments?
* ds/send-email-per-message-block:
send-email: make it easy to discern the messages for each patch
send-email: move newline characters out of a few translatable strings
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When sending one or multiple patches at once, the displayed result statuses
for each patch and the "Send this email [y/n/a/...]?" confirmation prompts
become bunched together with the messages produced for the subsequent patch,
or with the produced SMTP trace, respectively.
This makes reading the outputs unnecessarily harder, as visible in a couple
of excerpts from a sample output below:
...
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Result: 250
OK. Log says:
Server: smtp.example.com
MAIL FROM:<test@example.com>
...
...
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Send this email? ([y]es|[n]o|[e]dit|[q]uit|[a]ll): y
OK. Log says:
Server: smtp.example.com
MAIL FROM:<test@example.com>
...
As visible in the excerpts above, bunching the "Result: <status-code>" lines
or the "Send this email [y/n/a/...]?" confirmation prompts together with the
other messages makes the outputs a bit unreadable, which actually becomes
worse as the number of patches sent at once increases.
To make the produced outputs more readable, ensure that vertical whitespace
(more precisely, single newlines) exist before the displayed result statuses
and after the confirmation prompts, as visible in the two updated excerpts
from a sample output below:
...
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Result: 250
OK. Log says:
Server: smtp.example.com
MAIL FROM:<test@example.com>
...
...
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Send this email? ([y]es|[n]o|[e]dit|[q]uit|[a]ll): y
OK. Log says:
Server: smtp.example.com
MAIL FROM:<test@example.com>
...
While there, remove a couple of spotted stray newlines in the source code
and convert one indentation from spaces to tabs, for consistency.
Update the associated test, t9001, by including additional newlines into
the expected outputs of separate tests affected by these changes.
Helped-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Dragan Simic <dsimic@manjaro.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Move the already existing newline characters out of a few translatable
strings, to help a bit with the translation efforts.
Signed-off-by: Dragan Simic <dsimic@manjaro.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Updates to symbolic refs can now be made as a part of ref
transaction.
* kn/ref-transaction-symref:
refs: remove `create_symref` and associated dead code
refs: rename `refs_create_symref()` to `refs_update_symref()`
refs: use transaction in `refs_create_symref()`
refs: add support for transactional symref updates
refs: move `original_update_refname` to 'refs.c'
refs: support symrefs in 'reference-transaction' hook
files-backend: extract out `create_symref_lock()`
refs: accept symref values in `ref_transaction_update()`
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In the previous commits, we converted `refs_create_symref()` to utilize
transactions to perform symref updates. Earlier `refs_create_symref()`
used `create_symref()` to do the same.
We can now remove `create_symref()` and any code associated with it
which is no longer used. We remove `create_symref()` code from all the
reference backends and also remove it entirely from the `ref_storage_be`
struct.
Signed-off-by: Karthik Nayak <karthik.188@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The `refs_create_symref()` function is used to update/create a symref.
But it doesn't check the old target of the symref, if existing. It force
updates the symref. In this regard, the name `refs_create_symref()` is a
bit misleading. So let's rename it to `refs_update_symref()`. This is
akin to how 'git-update-ref(1)' also allows us to create apart from
update.
While we're here, rename the arguments in the function to clarify what
they actually signify and reduce confusion.
Signed-off-by: Karthik Nayak <karthik.188@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The `refs_create_symref()` function updates a symref to a given new
target. To do this, it uses a ref-backend specific function
`create_symref()`.
In the previous commits, we introduced symref support in transactions.
This means we can now use transactions to perform symref updates and
don't have to resort to `create_symref()`. Doing this allows us to
remove and cleanup `create_symref()`, which we will do in the following
commit.
Modify the expected error message for a test in
't/t0610-reftable-basics.sh', since the error is now thrown from
'refs.c'. This is because in transactional updates, F/D conflicts are
caught before we're in the reference backend.
Signed-off-by: Karthik Nayak <karthik.188@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The reference backends currently support transactional reference
updates. While this is exposed to users via 'git-update-ref' and its
'--stdin' mode, it is also used internally within various commands.
However, we do not support transactional updates of symrefs. This commit
adds support for symrefs in both the 'files' and the 'reftable' backend.
Here, we add and use `ref_update_has_null_new_value()`, a helper
function which is used to check if there is a new_value in a reference
update. The new value could either be a symref target `new_target` or a
OID `new_oid`.
We also add another common function `ref_update_check_old_target` which
will be used to check if the update's old_target corresponds to a
reference's current target.
Now transactional updates (verify, create, delete, update) can be used
for:
- regular refs
- symbolic refs
- conversion of regular to symbolic refs and vice versa
This also allows us to expose this to users via new commands in
'git-update-ref' in the future.
Note that a dangling symref update does not record a new reflog entry,
which is unchanged before and after this commit.
Signed-off-by: Karthik Nayak <karthik.188@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The files backend and the reftable backend implement
`original_update_refname` to obtain the original refname of the update.
Move it out to 'refs.c' and only expose it internally to the refs
library. This will be used in an upcoming commit to also introduce
another common functionality for the two backends.
We also rename the function to `ref_update_original_update_refname` to
keep it consistent with the upcoming other 'ref_update_*' functions
that'll be introduced.
Signed-off-by: Karthik Nayak <karthik.188@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The 'reference-transaction' hook runs whenever a reference update is
made to the system. In a previous commit, we added the `old_target` and
`new_target` fields to the `reference_transaction_update()`. In
following commits we'll also add the code to handle symref's in the
reference backends.
Support symrefs also in the 'reference-transaction' hook, by modifying
the current format:
<old-oid> SP <new-oid> SP <ref-name> LF
to be be:
<old-value> SP <new-value> SP <ref-name> LF
where for regular refs the output would not change and remain the same.
But when either 'old-value' or 'new-value' is a symref, we print the ref
as 'ref:<ref-target>'.
This does break backward compatibility, but the 'reference-transaction'
hook's documentation always stated that support for symbolic references
may be added in the future.
We do not add any tests in this commit since there is no git command
which activates this flow, in an upcoming commit, we'll start using
transaction based symref updates as the default, we'll add tests there
for the hook too.
Signed-off-by: Karthik Nayak <karthik.188@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The function `create_symref_locked()` creates a symref by creating a
'<symref>.lock' file and then committing the symref lock, which creates
the final symref.
Extract the early half of `create_symref_locked()` into a new helper
function `create_symref_lock()`. Because the name of the new function is
too similar to the original, rename the original to
`create_and_commit_symref()` to avoid confusion.
The new function `create_symref_locked()` can be used to create the
symref lock in a separate step from that of committing it. This allows
to add transactional support for symrefs, where the lock would be
created in the preparation step and the lock would be committed in the
finish step.
Signed-off-by: Karthik Nayak <karthik.188@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The function `ref_transaction_update()` obtains ref information and
flags to create a `ref_update` and add them to the transaction at hand.
To extend symref support in transactions, we need to also accept the
old and new ref targets and process it. This commit adds the required
parameters to the function and modifies all call sites.
The two parameters added are `new_target` and `old_target`. The
`new_target` is used to denote what the reference should point to when
the transaction is applied. Some functions allow this parameter to be
NULL, meaning that the reference is not changed.
The `old_target` denotes the value the reference must have before the
update. Some functions allow this parameter to be NULL, meaning that the
old value of the reference is not checked.
We also update the internal function `ref_transaction_add_update()`
similarly to take the two new parameters.
Signed-off-by: Karthik Nayak <karthik.188@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The default "creation-factor" used by "git format-patch" has been
raised to make it more aggressively find matching commits.
Comments?
* jc/format-patch-more-aggressive-range-diff:
format-patch: run range-diff with larger creation-factor
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We see too often that a range-diff added to format-patch output
shows too many "unmatched" patches. This is because the default
value for creation-factor is set to a relatively low value.
It may be justified for other uses (like you have a yet-to-be-sent
new iteration of your series, and compare it against the 'seen'
branch that has an older iteration, probably with the '--left-only'
option, to pick out only your patches while ignoring the others) of
"range-diff" command, but when the command is run as part of the
format-patch, the user _knows_ and expects that the patches in the
old and the new iterations roughly correspond to each other, so we
can and should use a much higher default.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Comments?
cf. <CAOLa=ZSre3f+0SR-_migfkPONqhinobKjU=NnGOJ_sTNM_L5ug@mail.gmail.com>
* it/refs-name-conflict:
refs: return conflict error when checking packed refs
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The TRANSACTION_NAME_CONFLICT error code refers to a failure to create a
ref due to a name conflict with another ref. An example of this is a
directory/file conflict such as ref names A/B and A.
"git fetch" uses this error code to more accurately describe the error
by recommending to the user that they try running "git remote prune" to
remove any old refs that are deleted by the remote which would clear up
any directory/file conflicts.
This helpful error message is not displayed when the conflicted ref is
stored in packed refs. This change fixes this by ensuring error return
code consistency in `lock_raw_ref`.
Signed-off-by: Ivan Tse <ivan.tse1@gmail.com>
Acked-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The knobs to tweak how reftable files are written have been made
available as configuration variables.
* ps/reftable-write-options:
refs/reftable: allow configuring geometric factor
reftable: make the compaction factor configurable
refs/reftable: allow disabling writing the object index
refs/reftable: allow configuring restart interval
reftable: use `uint16_t` to track restart interval
refs/reftable: allow configuring block size
reftable/dump: support dumping a table's block structure
reftable/writer: improve error when passed an invalid block size
reftable/writer: drop static variable used to initialize strbuf
reftable: consistently pass write opts as value
reftable: consistently refer to `reftable_write_options` as `opts`
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Allow configuring the geometric factor used by the auto-compaction
algorithm whenever a new table is appended to the stack of tables.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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When auto-compacting, the reftable library packs references such that
the sizes of the tables form a geometric sequence. The factor for this
geometric sequence is hardcoded to 2 right now. We're about to expose
this as a config option though, so let's expose the factor via write
options.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Besides the expected "ref" and "log" records, the reftable library also
writes "obj" records. These are basically a reverse mapping of object
IDs to their respective ref records so that it becomes efficient to
figure out which references point to a specific object. The motivation
for this data structure is the "uploadpack.allowTipSHA1InWant" config,
which allows a client to fetch any object by its hash that has a ref
pointing to it.
This reverse index is not used by Git at all though, and the expectation
is that most hosters nowadays use "uploadpack.allowAnySHA1InWant". It
may thus be preferable for many users to disable writing these optional
object indices altogether to safe some precious disk space.
Add a new config "reftable.indexObjects" that allows the user to disable
the object index altogether.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Add a new option `reftable.restartInterval` that allows the user to
control the restart interval when writing reftable records used by the
reftable library.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The restart interval can at most be `UINT16_MAX` as specified in the
technical documentation of the reftable format. Furthermore, it cannot
ever be negative. Regardless of that we use an `int` to track the
restart interval.
Change the type to use an `uint16_t` instead.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Add a new option `reftable.blockSize` that allows the user to control
the block size used by the reftable library.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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We're about to introduce new configs that will allow users to have more
control over how exactly reftables are written. To verify that these
configs are effective we will need to take a peak into the actual blocks
written by the reftable backend.
Introduce a new mode to the dumping logic that prints out the block
structure. This logic can be invoked via `test-tool dump-reftables -b`.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The reftable format only supports block sizes up to 16MB. When the
writer is being passed a value bigger than that it simply calls
abort(3P), which isn't all that helpful due to the lack of a proper
error message.
Improve this by calling `BUG()` instead.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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We have a static variable in the reftable writer code that is merely
used to initialize the `last_key` of the writer. Convert the code to
instead use `strbuf_init()` and drop the variable.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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We sometimes pass the refatble write options as value and sometimes as a
pointer. This is quite confusing and makes the reader wonder whether the
options get modified sometimes.
In fact, `reftable_new_writer()` does cause the caller-provided options
to get updated when some values aren't set up. This is quite unexpected,
but didn't cause any harm until now.
Refactor the code to consistently pass the options as a value so that
they are local to the subsystem they are being passed into so that we
can avoid weirdness like this.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Throughout the reftable library the `reftable_write_options` are
sometimes referred to as `cfg` and sometimes as `opts`. Unify these to
consistently use `opts` to avoid confusion.
While at it, touch up the coding style a bit by removing unneeded braces
around one-line statements and newlines between variable declarations.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The hashtable library "khash.h" has been replaced with "khashl.h"
that has better memory usage characteristics.
* ew/khash-to-khashl:
khashl: fix ensemble lookups on empty table
treewide: switch to khashl for memory savings
list-objects-filter: use kh_size API
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Junio C Hamano
Victoria Dye
Dragan Simic
Ignacio Encinas
Calvin Wan
Jonathan Tan
Britton Leo Kerin
Karthik Nayak
Ivan Tse
Patrick Steinhardt