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Mark code units that generate warnings with `-Wsign-compare`. This
allows for a structured approach to get rid of all such warnings over
time in a way that can be easily measured.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The sequencer failed to honor core.commentString in some places.
* kh/sequencer-comment-char:
sequencer: comment commit messages properly
sequencer: comment `--reference` subject line properly
sequencer: comment checked-out branch properly
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The rebase todo editor has commands like `fixup -c` which affects
the commit messages of the rebased commits.[1] For example:
pick hash1 <msg>
fixup hash2 <msg>
fixup -c hash3 <msg>
This says that hash2 and hash3 should be squashed into hash1 and
that hash3’s commit message should be used for the resulting commit.
So the user is presented with an editor where the two first commit
messages are commented out and the third is not. However this does
not work if `core.commentChar`/`core.commentString` is in use since
the comment char is hardcoded (#) in this `sequencer.c` function.
As a result the first commit message will not be commented out.
† 1: See 9e3cebd97cb (rebase -i: add fixup [-C | -c] command,
2021-01-29)
Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Co-authored-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Reported-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Kristoffer Haugsbakk <code@khaugsbakk.name>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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`git revert --reference <commit>` leaves behind a comment in the
first line:[1]
# *** SAY WHY WE ARE REVERTING ON THE TITLE LINE ***
Meaning that the commit will just consist of the next line if the user
exits the editor directly:
This reverts commit <--format=reference commit>
But the comment char here is hardcoded (#). Which means that the
comment line will inadvertently be included in the commit message if
`core.commentChar`/`core.commentString` is in use.
† 1: See 43966ab3156 (revert: optionally refer to commit in the
"reference" format, 2022-05-26)
Signed-off-by: Kristoffer Haugsbakk <code@khaugsbakk.name>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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`git rebase --update-ref` does not insert commands for dependent/sub-
branches which are checked out.[1] Instead it leaves a comment about
that fact. The comment char is hardcoded (#). In turn the comment
line gets interpreted as an invalid command when `core.commentChar`/
`core.commentString` is in use.
† 1: See 900b50c242 (rebase: add --update-refs option, 2022-07-19)
Signed-off-by: Kristoffer Haugsbakk <code@khaugsbakk.name>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Allow passing flags when setting up a transaction such that the
behaviour of the transaction itself can be altered. This functionality
will be used in a subsequent patch.
Adapt callers accordingly.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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When interactively rebasing merge commits, the commit message is parsed to
extract a probably meaningful label name. For instance if the merge commit
is “Merge branch 'feature0'”, then the rebase script will have thes lines:
```
label feature0
merge -C $sha feature0 # “Merge branch 'feature0'
```
This heuristic fails in the case of octopus merges or when the merge commit
message is actually unrelated to the parent commits.
An example that combines both is:
```
*---. 967bfa4 (HEAD -> integration) Integration
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| | | * 2135be1 (feature2, feat2) Feature 2
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| * 75f3139 (feat0) Feature 0
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* 25c86d0 (main) Initial commit
```
yields the labels Integration, Integration-2 and Integration-3.
Fix this by using a branch name for each merge commit's parent that is the
tip of at least one branch, and falling back to a label derived from the
merge commit message otherwise.
In the example above, the labels become feat0, Integration and feature2.
Signed-off-by: Nicolas Guichard <nicolas@guichard.eu>
Acked-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Extract load_branch_decorations from todo_list_add_update_ref_commands so
it can be re-used in make_script_with_merges.
Since it can now be called multiple times, use non-static lists and place
it next to load_ref_decorations to re-use the decoration_loaded guard.
Signed-off-by: Nicolas Guichard <nicolas@guichard.eu>
Acked-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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"git rebase -x --quiet" was not quiet, which was corrected.
* mt/rebase-x-quiet:
rebase --exec: respect --quiet
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rebase --exec doesn't obey --quiet and ends up printing messages about
the command being executed:
git rebase HEAD~3 --quiet --exec true
Executing: true
Executing: true
Executing: true
Let's fix that by omitting the "Executing" messages when using --quiet.
Furthermore, the sequencer code includes a few calls to
term_clear_line(), which prints a special character sequence to erase
the previous line displayed on stderr (even when nothing was printed
yet). For an user running the command interactively, the net effect of
calling this function with or without --quiet is the same as the
characters are invisible in the terminal. However, when redirecting the
output to a file or piping to another command, the presence of these
invisible characters is noticeable, and it may break user expectation as
--quiet is not being respected.
We could skip the term_clear_line() calls when --quiet is used, like we
are doing with the "Executing" messages, but it makes much more sense to
condition the line cleaning upon stderr being TTY, since these
characters are really only useful for TTY outputs.
The added test checks for both these two changes.
Reported-by: Lincoln Yuji <lincolnyuji@hotmail.com>
Reported-by: Rodrigo Siqueira <siqueirajordao@riseup.net>
Signed-off-by: Matheus Tavares <matheus.tavb@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Use of API functions that implicitly depend on the_repository
object in the config subsystem has been rewritten to pass a
repository object through the callchain.
* ps/config-wo-the-repository:
config: hide functions using `the_repository` by default
global: prepare for hiding away repo-less config functions
config: don't depend on `the_repository` with branch conditions
config: don't have setters depend on `the_repository`
config: pass repo to functions that rename or copy sections
config: pass repo to `git_die_config()`
config: pass repo to `git_config_get_expiry_in_days()`
config: pass repo to `git_config_get_expiry()`
config: pass repo to `git_config_get_max_percent_split_change()`
config: pass repo to `git_config_get_split_index()`
config: pass repo to `git_config_get_index_threads()`
config: expose `repo_config_clear()`
config: introduce missing setters that take repo as parameter
path: hide functions using `the_repository` by default
path: stop relying on `the_repository` in `worktree_git_path()`
path: stop relying on `the_repository` when reporting garbage
hooks: remove implicit dependency on `the_repository`
editor: do not rely on `the_repository` for interactive edits
path: expose `do_git_common_path()` as `repo_common_pathv()`
path: expose `do_git_path()` as `repo_git_pathv()`
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We implicitly depend on `the_repository` in our hook subsystem because
we use `strbuf_git_path()` to compute hook paths. Remove this dependency
by accepting a `struct repository` as parameter instead.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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We're not releasing the `todo_list` in `sequencer_pick_revisions()` when
hitting an error path. Restructure the function to have a common exit
path such that we can easily clean up the list and thus plug this memory
leak.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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In `get_replay_opts()`, we override the `gpg_sign` field that already
got populated by `sequencer_init_config()` in case the user has
"commit.gpgsign" set in their config. This creates a memory leak because
we overwrite the previously assigned value, which may have already
pointed to an allocated string.
Let's plug the memory leak by freeing the value before we overwrite it.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The documentation claims that "recursive defaults to the diff.algorithm
config setting", but this is currently not the case. This fixes it,
ensuring that diff.algorithm is used when -Xdiff-algorithm is not
supplied. This affects the following porcelain commands: "merge",
"rebase", "cherry-pick", "pull", "stash", "log", "am" and "checkout".
It also affects the "merge-tree" ancillary interrogator.
This change refactors the initialization of merge options to introduce
two functions, "init_merge_ui_options" and "init_merge_basic_options"
instead of just one "init_merge_options". This design follows the
approach used in diff.c, providing initialization methods for
porcelain and plumbing commands respectively. Thanks to that, the
"replay" and "merge-recursive" plumbing commands remain unaffected by
diff.algorithm.
Signed-off-by: Antonin Delpeuch <antonin@delpeuch.eu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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More memory leaks have been plugged.
* ps/leakfixes-more: (29 commits)
builtin/blame: fix leaking ignore revs files
builtin/blame: fix leaking prefixed paths
blame: fix leaking data for blame scoreboards
line-range: plug leaking find functions
merge: fix leaking merge bases
builtin/merge: fix leaking `struct cmdnames` in `get_strategy()`
sequencer: fix memory leaks in `make_script_with_merges()`
builtin/clone: plug leaking HEAD ref in `wanted_peer_refs()`
apply: fix leaking string in `match_fragment()`
sequencer: fix leaking string buffer in `commit_staged_changes()`
commit: fix leaking parents when calling `commit_tree_extended()`
config: fix leaking "core.notesref" variable
rerere: fix various trivial leaks
builtin/stash: fix leak in `show_stash()`
revision: free diff options
builtin/log: fix leaking commit list in git-cherry(1)
merge-recursive: fix memory leak when finalizing merge
builtin/merge-recursive: fix leaking object ID bases
builtin/difftool: plug memory leaks in `run_dir_diff()`
object-name: free leaking object contexts
...
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When calling either the recursive or the ORT merge machineries we need
to provide a list of merge bases. The ownership of that parameter is
then implicitly transferred to the callee, which is somewhat fishy.
Furthermore, that list may leak in some cases where the merge machinery
runs into an error, thus causing a memory leak.
Refactor the code such that we stop transferring ownership. Instead, the
merge machinery will now create its own local copies of the passed in
list as required if they need to modify the list. Free the list at the
callsites as required.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Fix some trivial memory leaks in `make_script_with_merges()`.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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We're leaking the `rev` string buffer in various call paths. Refactor
the function to have a common exit path so that we can release its
memory reliably.
This fixes a subset of tests failing with the memory sanitizer in t3404.
But as there are more failures, we cannot yet mark the whole test suite
as passing.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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When creating commits via `commit_tree_extended()`, the caller passes in
a string list of parents. This call implicitly transfers ownership of
that list to the function, which is quite surprising to begin with. But
to make matters worse, `commit_tree_extended()` doesn't even bother to
free the list of parents in error cases. The result is a memory leak,
and one that the caller cannot fix by themselves because they do not
know whether parts of the string list have already been released.
Refactor the code such that callers can keep ownership of the list of
parents, which is getting indicated by parameter being a constant
pointer now. Free the lists at the calling site and add a common exit
path to those sites as required.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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* ps/leakfixes:
builtin/mv: fix leaks for submodule gitfile paths
builtin/mv: refactor to use `struct strvec`
builtin/mv duplicate string list memory
builtin/mv: refactor `add_slash()` to always return allocated strings
strvec: add functions to replace and remove strings
submodule: fix leaking memory for submodule entries
commit-reach: fix memory leak in `ahead_behind()`
builtin/credential: clear credential before exit
config: plug various memory leaks
config: clarify memory ownership in `git_config_string()`
builtin/log: stop using globals for format config
builtin/log: stop using globals for log config
convert: refactor code to clarify ownership of check_roundtrip_encoding
diff: refactor code to clarify memory ownership of prefixes
config: clarify memory ownership in `git_config_pathname()`
http: refactor code to clarify memory ownership
checkout: clarify memory ownership in `unique_tracking_name()`
strbuf: fix leak when `appendwholeline()` fails with EOF
transport-helper: fix leaking helper name
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A CPP macro USE_THE_REPOSITORY_VARIABLE is introduced to help
transition the codebase to rely less on the availability of the
singleton the_repository instance.
* ps/use-the-repository:
hex: guard declarations with `USE_THE_REPOSITORY_VARIABLE`
t/helper: remove dependency on `the_repository` in "proc-receive"
t/helper: fix segfault in "oid-array" command without repository
t/helper: use correct object hash in partial-clone helper
compat/fsmonitor: fix socket path in networked SHA256 repos
replace-object: use hash algorithm from passed-in repository
protocol-caps: use hash algorithm from passed-in repository
oidset: pass hash algorithm when parsing file
http-fetch: don't crash when parsing packfile without a repo
hash-ll: merge with "hash.h"
refs: avoid include cycle with "repository.h"
global: introduce `USE_THE_REPOSITORY_VARIABLE` macro
hash: require hash algorithm in `empty_tree_oid_hex()`
hash: require hash algorithm in `is_empty_{blob,tree}_oid()`
hash: make `is_null_oid()` independent of `the_repository`
hash: convert `oidcmp()` and `oideq()` to compare whole hash
global: ensure that object IDs are always padded
hash: require hash algorithm in `oidread()` and `oidclr()`
hash: require hash algorithm in `hasheq()`, `hashcmp()` and `hashclr()`
hash: drop (mostly) unused `is_empty_{blob,tree}_sha1()` functions
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Use of the `the_repository` variable is deprecated nowadays, and we
slowly but steadily convert the codebase to not use it anymore. Instead,
callers should be passing down the repository to work on via parameters.
It is hard though to prove that a given code unit does not use this
variable anymore. The most trivial case, merely demonstrating that there
is no direct use of `the_repository`, is already a bit of a pain during
code reviews as the reviewer needs to manually verify claims made by the
patch author. The bigger problem though is that we have many interfaces
that implicitly rely on `the_repository`.
Introduce a new `USE_THE_REPOSITORY_VARIABLE` macro that allows code
units to opt into usage of `the_repository`. The intent of this macro is
to demonstrate that a certain code unit does not use this variable
anymore, and to keep it from new dependencies on it in future changes,
be it explicit or implicit
For now, the macro only guards `the_repository` itself as well as
`the_hash_algo`. There are many more known interfaces where we have an
implicit dependency on `the_repository`, but those are not guarded at
the current point in time. Over time though, we should start to add
guards as required (or even better, just remove them).
Define the macro as required in our code units. As expected, most of our
code still relies on the global variable. Nearly all of our builtins
rely on the variable as there is no way yet to pass `the_repository` to
their entry point. For now, declare the macro in "biultin.h" to keep the
required changes at least a little bit more contained.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The `empty_tree_oid_hex()` function use `the_repository` to derive the
hash function that shall be used. Require callers to pass in the hash
algorithm to get rid of this implicit dependency.
While at it, remove the unused `empty_blob_oid_hex()` function.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Both `oidread()` and `oidclr()` use `the_repository` to derive the hash
function that shall be used. Require callers to pass in the hash
algorithm to get rid of this implicit dependency.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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When the user adds to "git rebase -i" instruction to "pick" a merge
commit, the error experience is not pleasant. Such an error is now
caught earlier in the process that parses the todo list.
* pw/rebase-i-error-message:
rebase -i: improve error message when picking merge
rebase -i: pass struct replay_opts to parse_insn_line()
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The only todo commands that accept a merge commit are "merge" and
"reset". All the other commands like "pick" or "reword" fail when they
try to pick a a merge commit and print the message
error: commit abc123 is a merge but no -m option was given.
followed by a hint about the command being rescheduled. This message is
designed to help the user when they cherry-pick a merge and forget to
pass "-m". For users who are rebasing the message is confusing as there
is no way for rebase to cherry-pick the merge.
Improve the user experience by detecting the error and printing some
advice on how to fix it when the todo list is parsed rather than waiting
for the "pick" command to fail. The advice recommends "merge" rather
than "exec git cherry-pick -m ..." on the assumption that cherry-picking
merges is relatively rare and it is more likely that the user chose
"pick" by a mistake.
It would be possible to support cherry-picking merges by allowing the
user to pass "-m" to "pick" commands but that adds complexity to do
something that can already be achieved with
exec git cherry-pick -m1 abc123
Reported-by: Stefan Haller <lists@haller-berlin.de>
Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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This new parameter will be used in the next commit. As adding the
parameter requires quite a few changes to plumb it through the call
chain these are separated into their own commit to avoid cluttering up
the next commit with incidental changes.
Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Leakfixes.
* ps/leakfixes:
builtin/mv: fix leaks for submodule gitfile paths
builtin/mv: refactor to use `struct strvec`
builtin/mv duplicate string list memory
builtin/mv: refactor `add_slash()` to always return allocated strings
strvec: add functions to replace and remove strings
submodule: fix leaking memory for submodule entries
commit-reach: fix memory leak in `ahead_behind()`
builtin/credential: clear credential before exit
config: plug various memory leaks
config: clarify memory ownership in `git_config_string()`
builtin/log: stop using globals for format config
builtin/log: stop using globals for log config
convert: refactor code to clarify ownership of check_roundtrip_encoding
diff: refactor code to clarify memory ownership of prefixes
config: clarify memory ownership in `git_config_pathname()`
http: refactor code to clarify memory ownership
checkout: clarify memory ownership in `unique_tracking_name()`
strbuf: fix leak when `appendwholeline()` fails with EOF
transport-helper: fix leaking helper name
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The out parameter of `git_config_string()` is a `const char **` even
though we transfer ownership of memory to the caller. This is quite
misleading and has led to many memory leaks all over the place. Adapt
the parameter to instead be `char **`.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The trailer API has been reshuffled a bit.
* la/hide-trailer-info:
trailer unit tests: inspect iterator contents
trailer: document parse_trailers() usage
trailer: retire trailer_info_get() from API
trailer: make trailer_info struct private
trailer: make parse_trailers() return trailer_info pointer
interpret-trailers: access trailer_info with new helpers
sequencer: use the trailer iterator
trailer: teach iterator about non-trailer lines
trailer: add unit tests for trailer iterator
Makefile: sort UNIT_TEST_PROGRAMS
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Instead of calling "trailer_info_get()", which is a low-level function
in the trailers implementation (trailer.c), call
trailer_iterator_advance(), which was specifically designed for public
consumption in f0939a0eb1 (trailer: add interface for iterating over
commit trailers, 2020-09-27).
Avoiding "trailer_info_get()" means we don't have to worry about options
like "no_divider" (relevant for parsing trailers). We also don't have to
check for things like "info.trailer_start == info.trailer_end" to see
whether there were any trailers (instead we can just check to see
whether the iterator advanced at all).
Note how we have to use "iter.raw" in order to get the same behavior as
before when we iterated over the unparsed string array (char **trailers)
in trailer_info.
Signed-off-by: Linus Arver <linus@ucla.edu>
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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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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Apply the rules that rewrite callers of "refs" interfaces to explicitly
pass `struct ref_store`. The resulting patch has been applied with the
`--whitespace=fix` option.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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"git rebase --signoff" used to forget that it needs to add a
sign-off to the resulting commit when told to continue after a
conflict stops its operation.
* pw/rebase-m-signoff-fix:
rebase -m: fix --signoff with conflicts
sequencer: store commit message in private context
sequencer: move current fixups to private context
sequencer: start removing private fields from public API
sequencer: always free "struct replay_opts"
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When rebasing with "--signoff" the commit created by "rebase --continue"
after resolving conflicts or editing a commit fails to add the
"Signed-off-by:" trailer. This happens because the message from the
original commit is reused instead of the one that would have been used
if the sequencer had not stopped for the user interaction. The correct
message is stored in ctx->message and so with a couple of exceptions
this is written to rebase_path_message() when stopping for user
interaction instead. The exceptions are (i) "fixup" and "squash"
commands where the file is written by error_failed_squash() and (ii)
"edit" commands that are fast-forwarded where the original message is
still reused. The latter is safe because "--signoff" will never
fast-forward.
Note this introduces a change in behavior as the message file now
contains conflict comments. This is safe because commit_staged_changes()
passes an explicit cleanup flag when not editing the message and when
the message is being edited it will be cleaned up automatically. This
means user now sees the same message comments in editor with "rebase
--continue" as they would if they ran "git commit" themselves before
continuing the rebase. It also matches the behavior of "git
cherry-pick", "git merge" etc. which all list the files with merge
conflicts.
The tests are extended to check that all commits made after continuing a
rebase have a "Signed-off-by:" trailer. Sadly there are a couple of
leaks in apply.c which I've not been able to track down that mean this
test file is no-longer leak free when testing "git rebase --apply
--signoff" with conflicts.
Reported-by: David Bimmler <david.bimmler@isovalent.com>
Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Add an strbuf to "struct replay_ctx" to hold the current commit
message. This does not change the behavior but it will allow us to fix a
bug with "git rebase --signoff" in the next commit. A future patch
series will use the changes here to avoid writing the commit message to
disc unless there are conflicts or the commit is being reworded.
The changes in do_pick_commit() are a mechanical replacement of "msgbuf"
with "ctx->message". In do_merge() the code to write commit message to
disc is factored out of the conditional now that both branches store the
message in the same buffer.
Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The list of current fixups is an implementation detail of the sequencer
and so it should not be stored in the public options struct.
Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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"struct replay_opts" has a number of fields that are for internal
use. While they are marked as private having them in a public struct is
a distraction for callers and means that every time the internal details
are changed we have to recompile all the files that include sequencer.h
even though the public API is unchanged. This commit starts the process
of removing the private fields by adding an opaque pointer to a "struct
replay_ctx" to "struct replay_opts" and moving the "reflog_message"
member to the new private struct.
The sequencer currently updates the state files on disc each time it
processes a command in the todo list. This is an artifact of the
scripted implementation and makes the code hard to reason about as it is
not possible to get a complete view of the state in memory. In the
future we will add new members to "struct replay_ctx" to remedy this and
avoid writing state to disc unless the sequencer stops for user
interaction.
Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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sequencer_post_commit_cleanup() initializes an instance of "struct
replay_opts" but does not call replay_opts_release(). Currently this
does not leak memory because the code paths called don't allocate any of
the struct members. That will change in the next commit so add call to
replay_opts_release() to prevent a memory leak in "git commit" that
breaks all of the leak free tests.
Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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core.commentChar used to be limited to a single byte, but has been
updated to allow an arbitrary multi-byte sequence.
* jk/core-comment-string:
config: add core.commentString
config: allow multi-byte core.commentChar
environment: drop comment_line_char compatibility macro
wt-status: drop custom comment-char stringification
sequencer: handle multi-byte comment characters when writing todo list
find multi-byte comment chars in unterminated buffers
find multi-byte comment chars in NUL-terminated strings
prefer comment_line_str to comment_line_char for printing
strbuf: accept a comment string for strbuf_add_commented_lines()
strbuf: accept a comment string for strbuf_commented_addf()
strbuf: accept a comment string for strbuf_stripspace()
environment: store comment_line_char as a string
strbuf: avoid shadowing global comment_line_char name
commit: refactor base-case of adjust_comment_line_char()
strbuf: avoid static variables in strbuf_add_commented_lines()
strbuf: simplify comment-handling in add_lines() helper
config: forbid newline as core.commentChar
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We already match multi-byte comment characters in parse_insn_line(),
thanks to the previous commit, yielding a TODO_COMMENT entry. But in
todo_list_to_strbuf(), we may call command_to_char() to convert that
back into something we can output.
We can't just return comment_line_char anymore, since it may require
multiple bytes. Instead, we'll return "0" for this case, which is the
same thing we'd return for a command which does not have a single-letter
abbreviation (e.g., "revert" or "noop"). There is only a single caller
of command_to_char(), and upon seeing "0" it falls back to outputting
the full name via command_to_string(). So we can handle TODO_COMMENT
there, returning the full string.
Note that there are many other callers of command_to_string(), which
will now behave differently if they pass TODO_COMMENT. But we would not
expect that to happen; prior to this commit, the function just calls
die() in this case. And looking at those callers, that makes sense;
e.g., do_pick_commit() will only be called when servicing a pick
command, and should never be called for a comment in the first place.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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As with the previous patch, we need to swap out single-byte matching for
something like starts_with() to match all bytes of a multi-byte comment
character. But for cases where the buffer is not NUL-terminated (and we
instead have an explicit size or end pointer), it's not safe to use
starts_with(), as it might walk off the end of the buffer.
Let's introduce a new starts_with_mem() that does the same thing but
also accepts the length of the "haystack" str and makes sure not to walk
past it.
Note that in most cases the existing code did not need a length check at
all, since it was written in a way that knew we had at least one byte
available (and that was all we checked). So I had to read each one to
find the appropriate bounds. The one exception is sequencer.c's
add_commented_lines(), where we can actually get rid of the length
check. Just like starts_with(), our starts_with_mem() handles an empty
haystack variable by not matching (assuming a non-empty prefix).
A few notes on the implementation of starts_with_mem():
- it would be equally correct to take an "end" pointer (and indeed,
many of the callers have this and have to subtract to come up with
the length). I think taking a ptr/size combo is a more usual
interface for our codebase, though, and has the added benefit that
the function signature makes it harder to mix up the three
parameters.
- we could obviously build starts_with() on top of this by passing
strlen(str) as the length. But it's possible that starts_with() is a
relatively hot code path, and it should not pay that penalty (it can
generally return an answer proportional to the size of the prefix,
not the whole string).
- it naively feels like xstrncmpz() should be able to do the same
thing, but that's not quite true. If you pass the length of the
haystack buffer, then strncmp() finds that a shorter prefix string
is "less than" than the haystack, even if the haystack starts with
the prefix. If you pass the length of the prefix, then you risk
reading past the end of the haystack if it is shorter than the
prefix. So I think we really do need a new function.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Several parts of the code need to identify lines that begin with the
comment character, and do so with a simple byte equality check. As part
of the transition to handling multi-byte characters, we need to match
all of the bytes. For cases where we are looking in a NUL-terminated
string, we can just use starts_with(), which checks all of the
characters in comment_line_str.
Note that we can drop the "line.len" check in wt-status.c's
read_rebase_todolist(). The starts_with() function handles the case of
an empty haystack buffer (it will always return false for a non-empty
prefix).
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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As part of our transition to multi-byte comment characters, we should
use the string variable rather than the historical character variable.
All of the sites adjusted here are just swapping out "%c" for "%s" in
format strings, or strbuf_addch() for strbuf_addstr(). The type system
and printf-attribute give the compiler enough information to make sure
our formats and variable changes all match (especially important for
cases where the format string is defined far away from its use, like
prepare_to_commit() in commit.c).
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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As part of our transition to multi-byte comment characters, let's take a
NUL-terminated string pointer for strbuf_add_commented_lines() rather
than a single character.
All of the callers have to be adjusted; most can just pass
comment_line_str rather than comment_line_char.
And now our "cheat" in strbuf_commented_addf() can go away, as we can
take the full string from it.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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As part of our transition to multi-byte comment characters, let's take a
NUL-terminated string pointer for strbuf_commented_addf() rather than a
single character.
All of the callers have to be adjusted, but they can just pass
comment_line_str rather than comment_line_char.
Note that we rely on strbuf_add_commented_lines() under the hood, so
we'll cheat a bit to squeeze our string into a single character (for now
the two are equivalent, and we'll address this TODO in the next patch).
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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As part of our transition to multi-byte comment characters, let's take a
NUL-terminated string pointer for strbuf_stripspace(), rather than a
single character. We can continue to support its feature of ignoring
comments by accepting a NULL pointer (as opposed to the current behavior
of a NUL byte).
All of the callers have to be adjusted, but they can all just pass
comment_line_str (or NULL).
Inside the function we detect comments by comparing the first byte of a
line to the comment character. We'll adjust that to use starts_with(),
which will match multiple bytes (though for now, of course, we still
only allow a single byte, so it's academic).
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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"git config" learned "--comment=<message>" option to leave a
comment immediately after the "variable = value" on the same line
in the configuration file.
* rs/config-comment:
config: allow tweaking whitespace between value and comment
config: fix --comment formatting
config: add --comment option to add a comment
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