This new strategy is similar to "concatenate", but in addition to
concatenating the two note candidates, this strategy sorts the resulting
lines, and removes duplicate lines from the result. This is equivalent to
applying the "cat | sort | uniq" shell pipeline to the two note candidates.
This strategy is useful if the notes follow a line-based format where one
wants to avoid duplicate lines in the merge result.
Note that if either of the note candidates contain duplicate lines _prior_
to the merge, these will also be removed by this merge strategy.
The patch also contains tests and documentation for the new strategy.
Signed-off-by: Johan Herland <johan@herland.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When manually resolving a notes merge, if the merging ref has moved since
the merge started, we should fail to complete the merge, and alert the user
to what's going on.
This situation may arise if you start a 'git notes merge' which results in
conflicts, and you then update the current notes ref (using for example
'git notes add/copy/amend/edit/remove/prune', 'git update-ref', etc.),
before you get around to resolving the notes conflicts and calling
'git notes merge --commit'.
We detect this situation by comparing the first parent of the partial merge
commit (which was created when the merge started) to the current value of the
merging notes ref (pointed to by the .git/NOTES_MERGE_REF symref).
If we don't fail in this situation, the notes merge commit would overwrite
the updated notes ref, thus losing the changes that happened in the meantime.
The patch includes a testcase verifying that we fail correctly in this
situation.
Signed-off-by: Johan Herland <johan@herland.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This brings notes merge in line with regular merge's behaviour.
This patch has been improved by the following contributions:
- Ævar Arnfjörð Bjarmason: Don't use C99 comments.
Thanks-to: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Johan Herland <johan@herland.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When the notes merge conflicts in .git/NOTES_MERGE_WORKTREE have been
resolved, we need to record a new notes commit on the appropriate notes
ref with the resolved notes.
This patch implements 'git notes merge --commit' which the user should
run after resolving conflicts in the notes merge worktree. This command
finalizes the notes merge by recombining the partial notes tree from
part 1 with the now-resolved conflicts in the notes merge worktree in a
merge commit, and updating the appropriate ref to this merge commit.
In order to correctly finalize the merge, we need to keep track of three
things:
- The partial merge result from part 1, containing the auto-merged notes.
This is now stored into a ref called .git/NOTES_MERGE_PARTIAL.
- The unmerged notes. These are already stored in
.git/NOTES_MERGE_WORKTREE, thanks to part 1.
- The notes ref to be updated by the finalized merge result. This is now
stored in a symref called .git/NOTES_MERGE_REF.
In addition to "git notes merge --commit", which uses the above details
to create the finalized notes merge commit, this patch also implements
"git notes merge --reset", which aborts the ongoing notes merge by simply
removing the files/directory described above.
FTR, "git notes merge --commit" reuses "git notes merge --reset" to remove
the information described above (.git/NOTES_MERGE_*) after the notes merge
have been successfully finalized.
The patch also contains documentation and testcases for the two new options.
This patch has been improved by the following contributions:
- Ævar Arnfjörð Bjarmason: Fix nonsense sentence in --commit description
- Sverre Rabbelier: Rename --reset to --abort
Thanks-to: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Thanks-to: Sverre Rabbelier <srabbelier@gmail.com>
Signed-off-by: Johan Herland <johan@herland.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Conflicts (that are to be resolved manually) are written into a special-
purpose working tree, located at .git/NOTES_MERGE_WORKTREE. Within this
directory, conflicting notes entries are stored (with conflict markers
produced by ll_merge()) using the SHA1 of the annotated object. The
.git/NOTES_MERGE_WORKTREE directory will only contain the _conflicting_
note entries. The non-conflicting note entries (aka. the partial merge
result) are stored in 'local_tree', and the SHA1 of the resulting commit
is written to 'result_sha1'. The return value from notes_merge() is -1.
The user is told to edit the files within the .git/NOTES_MERGE_WORKTREE
directory in order to resolve the conflicts.
The patch also contains documentation and testcases for the correct setup
of .git/NOTES_MERGE_WORKTREE.
The next part will recombine the partial notes merge result with the
resolved conflicts in .git/NOTES_MERGE_WORKTREE to produce the complete
merge result.
This patch has been improved by the following contributions:
- Jonathan Nieder: Use trace_printf(...) instead of OUTPUT(o, 5, ...)
Thanks-to: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Johan Herland <johan@herland.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The new -s/--strategy command-line option to 'git notes merge' allow the user
to choose how notes merge conflicts should be resolved. There are four valid
strategies to choose from:
1. "manual" (the default): This will let the user manually resolve conflicts.
This option currently fails with an error message. It will be implemented
properly in future patches.
2. "ours": This automatically chooses the local version of a conflict, and
discards the remote version.
3. "theirs": This automatically chooses the remote version of a conflict, and
discards the local version.
4. "union": This automatically resolves the conflict by appending the remote
version to the local version.
The strategies are implemented using the combine_notes_* functions from the
notes.h API.
The patch also includes testcases verifying the correct implementation of
these strategies.
This patch has been improved by the following contributions:
- Jonathan Nieder: Future-proof by always checking add_note() return value
- Stephen Boyd: Use test_commit
- Stephen Boyd: Use correct option name
Thanks-to: Jonathan Nieder <jrnieder@gmail.com>
Thanks-to: Stephen Boyd <bebarino@gmail.com>
Signed-off-by: Johan Herland <johan@herland.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This continuation of the 'git notes merge' implementation teaches notes-merge
to properly do real merges between notes trees: Two diffs are performed, one
from $base to $remote, and another from $base to $local. The paths in each
diff are normalized to SHA1 object names. The two diffs are then consolidated
into a single list of change pairs to be evaluated. Each change pair consist
of:
- The annotated object's SHA1
- The $base SHA1 (i.e. the common ancestor notes for this object)
- The $local SHA1 (i.e. the current notes for this object)
- The $remote SHA1 (i.e. the to-be-merged notes for this object)
From the pair ($base -> $local, $base -> $remote), we can determine the merge
result using regular 3-way rules. If conflicts are encountered in this
process, we fail loudly and exit (conflict handling to be added in a future
patch), If we can complete the merge without conflicts, the resulting
notes tree is committed, and the current notes ref updated.
The patch includes added testcases verifying that we can successfully do real
conflict-less merges.
This patch has been improved by the following contributions:
- Jonathan Nieder: Future-proof by always checking add_note() return value
- Stephen Boyd: Use test_commit
- Jonathan Nieder: Use trace_printf(...) instead of OUTPUT(o, 5, ...)
- Junio C Hamano: fixup minor style issues
Thanks-to: Jonathan Nieder <jrnieder@gmail.com>
Thanks-to: Stephen Boyd <bebarino@gmail.com>
Thanks-to: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Johan Herland <johan@herland.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Create new function create_notes_commit() which is slightly more general than
commit_notes() (accepts multiple commit parents and does not auto-update the
notes ref). This function will be used by the notes-merge functionality in
future patches.
Also rewrite builtin/notes.c:commit_notes() to reuse this new function.
Signed-off-by: Johan Herland <johan@herland.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This initial implementation of 'git notes merge' only handles the trivial
merge cases (i.e. where the merge is either a no-op, or a fast-forward).
The patch includes testcases for these trivial merge cases.
Future patches will extend the functionality of 'git notes merge'.
This patch has been improved by the following contributions:
- Stephen Boyd: Simplify argc logic
- Stephen Boyd: Use test_commit
- Ævar Arnfjörð Bjarmason: Don't use C99 comments.
- Jonathan Nieder: Add constants for common verbosity values
- Jonathan Nieder: Use trace_printf(...) instead of OUTPUT(o, 5, ...)
- Jonathan Nieder: Remove extraneous show() function
- Jonathan Nieder: Clarify handling of empty/missing notes ref in notes_merge()
- Junio C Hamano: fixup minor style issues
Thanks-to: Stephen Boyd <bebarino@gmail.com>
Thanks-to: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Thanks-to: Jonathan Nieder <jrnieder@gmail.com>
Thanks-to: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Johan Herland <johan@herland.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
expand_notes_ref() is a new function that performs the DWIM transformation
of "foo" -> "refs/notes/foo" where notes refs are expected.
This is done in preparation for future patches which will also need this
DWIM functionality.
Signed-off-by: Johan Herland <johan@herland.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The combine_notes_fn functions uses a non-zero return value to indicate
failure. However, this return value was converted to a call to die()
in note_tree_insert().
Instead, propagate this return value out to add_note(), and return it
from there to enable the caller to handle errors appropriately.
Existing add_note() callers are updated to die() upon failure, thus
preserving the current behaviour. The only exceptions are copy_note()
and notes_cache_put() where we are able to propagate the add_note()
return value instead.
This patch has been improved by the following contributions:
- Jonathan Nieder: Future-proof by always checking add_note() return value
- Jonathan Nieder: Improve clarity of final if-condition in note_tree_insert()
Thanks-to: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Johan Herland <johan@herland.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Add OPT__FORCE as a helper macro in the same spirit as OPT__VERBOSE
et.al. to simplify defining -f/--force options.
Signed-off-by: Rene Scharfe <rene.scharfe@lstfire.ath.cx>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Allows better help text to be defined than "dry run". Also make use
of the macro in places that already had a different description. No
object code changes intended.
Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Allows better help text to be defined than "be verbose". Also make use
of the macro in places that already had a different description. No
object code changes intended.
Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Extend remove_note() in the notes API to return whether or not a note was
actually removed. Use this in 'git notes remove' to skip the creation of
a notes commit when no notes were actually removed.
Also add a test illustrating the change in behavior.
Signed-off-by: Johan Herland <johan@herland.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
For consistency with other git commands, let the prune subcommand of
git notes accept the long options --dry-run and --verbose for the
respective short ones -n and -v.
Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Otherwise we may segfault with too few parameters.
Signed-off-by: Jeff King <peff@peff.net>
Tested-by: Bert Wesarg <Bert.Wesarg@googlemail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
* maint:
msvc: Fix some compiler warnings
Documentation: grep: fix asciidoc problem with --
msvc: Fix some "expr evaluates to function" compiler warnings
In particular, the following warning is issued while compiling
notes.c:
notes.c(927) : warning C4550: expression evaluates to a \
function which is missing an argument list
along with identical warnings on lines 928, 1016 and 1017.
In order to suppress the warning, we change the definition of
combine_notes_fn, so that the symbol type is an (explicit)
"pointer to function ...". As a result, several other
declarations need some minor fix-up to take account of the
new typedef.
Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk>
Acked-by: Johan Herland <johan@herland.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Sun Studio 12 Update 1 thinks that *t could be uninitialized,
ostensibly because it doesn't take rewrite_cmd into account in its
static analysis.
builtin/notes.c: In function `notes_copy_from_stdin':
builtin/notes.c:419: warning: 't' might be used uninitialized in this function
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Introduce -n and -v options for "git notes prune" in complete analogy to
"git prune" so that one can check for dangling notes easily.
The output is a list of names of objects whose notes would be resp.
are removed so that one can check the object ("git show sha1") as well as
the note ("git notes show sha1").
Signed-off-by: Michael J Gruber <git@drmicha.warpmail.net>
Acked-by: Johan Herland <johan@herland.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
* tr/notes-display:
git-notes(1): add a section about the meaning of history
notes: track whether notes_trees were changed at all
notes: add shorthand --ref to override GIT_NOTES_REF
commit --amend: copy notes to the new commit
rebase: support automatic notes copying
notes: implement helpers needed for note copying during rewrite
notes: implement 'git notes copy --stdin'
rebase -i: invoke post-rewrite hook
rebase: invoke post-rewrite hook
commit --amend: invoke post-rewrite hook
Documentation: document post-rewrite hook
Support showing notes from more than one notes tree
test-lib: unset GIT_NOTES_REF to stop it from influencing tests
Conflicts:
git-am.sh
refs.c
* jh/notes: (33 commits)
Documentation: fix a few typos in git-notes.txt
notes: fix malformed tree entry
builtin-notes: Minor (mostly parse_options-related) fixes
builtin-notes: Add "copy" subcommand for copying notes between objects
builtin-notes: Misc. refactoring of argc and exit value handling
builtin-notes: Add -c/-C options for reusing notes
builtin-notes: Refactor handling of -F option to allow combining -m and -F
builtin-notes: Deprecate the -m/-F options for "git notes edit"
builtin-notes: Add "append" subcommand for appending to note objects
builtin-notes: Add "add" subcommand for adding notes to objects
builtin-notes: Add --message/--file aliases for -m/-F options
builtin-notes: Add "list" subcommand for listing note objects
Documentation: Generalize git-notes docs to 'objects' instead of 'commits'
builtin-notes: Add "prune" subcommand for removing notes for missing objects
Notes API: prune_notes(): Prune notes that belong to non-existing objects
t3305: Verify that removing notes triggers automatic fanout consolidation
builtin-notes: Add "remove" subcommand for removing existing notes
Teach builtin-notes to remove empty notes
Teach notes code to properly preserve non-notes in the notes tree
t3305: Verify that adding many notes with git-notes triggers increased fanout
...
Conflicts:
Makefile
