| Commit message (Collapse) | Author | Age | Files | Lines |
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Split index mode only has a few dedicated tests, but as the index is
involved in nearly every git operation, this doesn't quite cover all the
ways repositories with split index can break. To use split index mode
throughout the test suite a GIT_TEST_SPLIT_INDEX environment variable
can be set, which makes git split the index at random and thus
excercises the functionality much more thoroughly.
As this is not turned on by default, it is not executed nearly as often
as the test suite is run, so occationally breakages slip through. Try
to counteract that by running the test suite with GIT_TEST_SPLIT_INDEX
mode turned on on travis.
To avoid using too many cycles on travis only run split index mode in
the linux-gcc target only. The Linux build was chosen over the Mac OS
builds because it tends to be much faster to complete.
The linux gcc build was chosen over the linux clang build because the
linux clang build is the fastest build, so it can serve as an early
indicator if something is broken and we want to avoid spending the extra
cycles of running the test suite twice for that.
Helped-by: Lars Schneider <larsxschneider@gmail.com>
Helped-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Thomas Gummerer <t.gummerer@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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In a96d3cc3f6 ("cache-tree: reject entries with null sha1", 2017-04-21)
we made sure that broken cache entries do not get propagated to new
trees. Part of that was making sure not to re-use an existing cache
tree that includes a null oid.
It did so by dropping the cache tree in 'do_write_index()' if one of
the entries contains a null oid. In split index mode however, there
are two invocations to 'do_write_index()', one for the shared index
and one for the split index. The cache tree is only written once, to
the split index.
As we only loop through the elements that are effectively being
written by the current invocation, that may not include the entry with
a null oid in the split index (when it is already written to the
shared index), where we write the cache tree. Therefore in split
index mode we may still end up writing the cache tree, even though
there is an entry with a null oid in the index.
Fix this by checking for null oids in prepare_to_write_split_index,
where we loop the entries of the shared index as well as the entries for
the split index.
This fixes t7009 with GIT_TEST_SPLIT_INDEX. Also add a new test that's
more specifically showing the problem.
Signed-off-by: Thomas Gummerer <t.gummerer@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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read_index_from() takes a path argument for the location of the index
file. For reading the shared index in split index mode however it just
ignores that path argument, and reads it from the gitdir of the current
repository.
This works as long as an index in the_repository is read. Once that
changes, such as when we read the index of a submodule, or of a
different working tree than the current one, the gitdir of
the_repository will no longer contain the appropriate shared index,
and git will fail to read it.
For example t3007-ls-files-recurse-submodules.sh was broken with
GIT_TEST_SPLIT_INDEX set in 188dce131f ("ls-files: use repository
object", 2017-06-22), and t7814-grep-recurse-submodules.sh was also
broken in a similar manner, probably by introducing struct repository
there, although I didn't track down the exact commit for that.
be489d02d2 ("revision.c: --indexed-objects add objects from all
worktrees", 2017-08-23) breaks with split index mode in a similar
manner, not erroring out when it can't read the index, but instead
carrying on with pruning, without taking the index of the worktree into
account.
Fix this by passing an additional gitdir parameter to read_index_from,
to indicate where it should look for and read the shared index from.
read_cache_from() defaults to using the gitdir of the_repository. As it
is mostly a convenience macro, having to pass get_git_dir() for every
call seems overkill, and if necessary users can have more control by
using read_index_from().
Helped-by: Brandon Williams <bmwill@google.com>
Signed-off-by: Thomas Gummerer <t.gummerer@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Clarify and enhance documentation for "merge-base --fork-point", as
it was clear what it computed but not why/what for.
* jc/merge-base-fork-point-doc:
merge-base --fork-point doc: clarify the example and failure modes
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The illustrated history used to explain the `--fork-point` mode
named three keypoint commits B3, B2 and B1 from the oldest to the
newest, which was hard to read. Relabel them to B0, B1, B2. Also
illustrate the history after the rebase using the `--fork-point`
facility was made.
The text already mentions use of reflog, but the description is not
clear what benefit we are trying to gain by using reflog. Clarify
that it is to find the commits that were known to be at the tip of
the remote-tracking branch. This in turn necessitates users to know
the ramifications of the underlying assumptions, namely, expiry of
reflog entries will make it impossible to determine which commits
were at the tip of the remote-tracking branches and we fail when in
doubt (instead of giving a random and incorrect result without even
warning). Another limitation is that it won't be useful if you did
not fork from the tip of a remote-tracking branch but from in the
middle.
Describe them.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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A few scripts (both in production and tests) incorrectly redirected
their error output. These have been corrected.
* tz/redirect-fix:
rebase: fix stderr redirect in apply_autostash()
t/lib-gpg: fix gpgconf stderr redirect to /dev/null
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The intention is to ignore all output from the 'git stash apply' call.
Adjust the order of the redirection to ensure that both stdout and
stderr are redirected to /dev/null.
Signed-off-by: Todd Zullinger <tmz@pobox.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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In 29ff1f8f74 (t: lib-gpg: flush gpg agent on startup, 2017-07-20), a
call to gpgconf was added to kill the gpg-agent. The intention was to
ignore all output from the call, but the order of the redirection needs
to be switched to ensure that both stdout and stderr are redirected to
/dev/null. Without this, gpgconf from gnupg-2.0 releases would output
'gpgconf: invalid option "--kill"' each time it was called.
Signed-off-by: Todd Zullinger <tmz@pobox.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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"git notes" sent its error message to its standard output stream,
which was corrected.
* tz/notes-error-to-stderr:
notes: send "Automatic notes merge failed" messages to stderr
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All other error messages from notes use stderr. Do the same when
alerting users of an unresolved notes merge.
Fix the output redirection in t3310 and t3320 as well. Previously, the
tests directed output to a file, but stderr was either not captured or
not sent to the file due to the order of the redirection operators.
Signed-off-by: Todd Zullinger <tmz@pobox.com>
Acked-by: Johan Herland <johan@herland.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The three-way merge performed by "git cherry-pick" was confused
when a new submodule was added in the meantime, which has been
fixed (or "papered over").
* sb/test-cherry-pick-submodule-getting-in-a-way:
merge-recursive: handle addition of submodule on our side of history
t/3512: demonstrate unrelated submodule/file conflict as cherry-pick failure
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The code for a newly added path assumed that the path was a normal file,
and thus checked for there being a directory still being in the way of
the file. Note that since unpack_trees() does path-in-the-way checks
already, the only way for there to be a directory in the way at this
point in the code, is if there is some kind of D/F conflict in the merge.
For a submodule addition on HEAD's side of history, the submodule would
have already been present. This means that we do expect there to be a
directory present but should not consider it to be "in the way"; instead,
it's the expected submodule. So, when there's a submodule addition from
HEAD's side, don't bother checking the working copy for a directory in
the way.
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Signed-off-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The sequencer machinery (used by "git cherry-pick A..B", and "git
rebase -i", among other things) would have lost a commit if stopped
due to an unlockable index file, which has been fixed.
* pw/sequencer-recover-from-unlockable-index:
sequencer: reschedule pick if index can't be locked
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If the index cannot be locked in do_recursive_merge(), issue an
error message and go on to the error recovery codepath, instead of
dying. When the commit cannot be picked, it needs to be rescheduled
when performing an interactive rebase, but just dying there won't
allow that to happen, and when the user runs 'git rebase --continue'
rather than 'git rebase --abort', the commit gets silently dropped.
Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
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"git apply --inaccurate-eof" when used with "--ignore-space-change"
triggered an internal sanity check, which has been fixed.
* rs/apply-inaccurate-eof-with-incomplete-line:
apply: update line lengths for --inaccurate-eof
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Some diff implementations don't report missing newlines at the end of
files. Applying such a patch can cause a newline character to be
added inadvertently. The option --inaccurate-eof of git apply can be
used to remove trailing newlines if needed.
apply_one_fragment() cuts it off from the buffers for preimage and
postimage. Before it does, it builds an array with the lengths of each
line for both. Make sure to update the length of the last line in
these line info structures as well to keep them consistent with their
respective buffer.
Without this fix the added test fails; git apply dies and reports:
fatal: BUG: caller miscounted postlen: asked 1, orig = 1, used = 2
That sanity check is only called if whitespace changes are ignored.
Reported-by: Mahmoud Al-Qudsi <mqudsi@neosmart.net>
Signed-off-by: Rene Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Command line completion (in contrib/) has been taught about the
"--copy" option of "git branch".
* tz/complete-branch-copy:
completion: add '--copy' option to 'git branch'
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In 52d59cc645 (branch: add a --copy (-c) option to go with --move (-m),
2017-06-18), `git branch` learned a `--copy` option. Include it when
providing command completions.
Signed-off-by: Todd Zullinger <tmz@pobox.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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When "git rebase" prepared an mailbox of changes and fed it to "git
am" to replay them, it was confused when a stray "From " happened
to be in the log message of one of the replayed changes. This has
been corrected.
* ew/rebase-mboxrd:
rebase: use mboxrd format to avoid split errors
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The mboxrd format allows the use of embedded "From " lines in
commit messages without being misinterpreted by mailsplit
Reported-by: Florian Weimer <fweimer@redhat.com>
Signed-off-by: Eric Wong <e@80x24.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Code clean-up.
* sd/branch-copy:
config: avoid "write_in_full(fd, buf, len) != len" pattern
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As explained in commit 06f46f237 (avoid "write_in_full(fd, buf, len)
!= len" pattern, 2017–09–13) the return value of write_in_full() is
either -1 or the requested number of bytes. As such comparing the
return value to an unsigned value such as strbuf.len will fail to
catch errors. Change the code to use the preferred '< 0' check.
Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Contrary to the documentation, "git pull -4/-6 other-args" did not
ask the underlying "git fetch" to go over IPv4/IPv6, which has been
corrected.
* sw/pull-ipv46-passthru:
pull: pass -4/-6 option to 'git fetch'
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The -4/-6 option should be passed through to 'git fetch' to be
consistent with the man page.
Signed-off-by: Wei Shuyu <wsy@dogben.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The SubmittingPatches document has been converted to produce an
HTML version via AsciiDoc/Asciidoctor.
* bc/submitting-patches-in-asciidoc:
Documentation: convert SubmittingPatches to AsciiDoc
Documentation: enable compat-mode for Asciidoctor
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The SubmittingPatches document is often cited by outside parties as an
example of good practices to follow, including logical, independent
commits; patch sign-offs; and sending patches to a mailing list.
Currently, people who want to cite a particular section tend to either
refer to it by name and let the interested party search through the
document to find it, or link to a given line number on GitHub and hope
the file doesn't change.
Instead, convert the document to AsciiDoc. Build it as part of the
technical documentation, since it is likely of interest to the same
group of people. Provide stable links to the sections which outside
parties are likely to want to link to. Make some minor structural
changes to organize it so that it can be formatted sanely.
Since the makefile needs a .txt extension in order to build with the
rest of the documentation, simply copy the file. Ignore the temporary
file so it doesn't get checked in accidentally, and remove it as part of
the clean process. Do this instead of renaming the file so that people
who have already linked to the documentation (who we're trying to help)
don't find their links broken. Avoid symlinking since Windows will not
like that.
This allows us to render the document as part of the website for the
benefit of others who wish to link to it as well as providing a more
nicely formatted display for our community and potential contributors.
Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Asciidoctor 1.5.0 and later have a compatibility mode that makes it more
compatible with some Asciidoc syntax, notably the single and double
quote handling. While this doesn't affect any of our current
documentation, it would be beneficial to enable this mode to reduce the
differences between AsciiDoc and Asciidoctor if we make use of those
features in the future.
Since this mode is specified as an attribute, if a version of
Asciidoctor doesn't understand it, it will simply be ignored.
Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Recent update to the refs infrastructure implementation started
rewriting packed-refs file more often than before; this has been
optimized again for most trivial cases.
* mh/avoid-rewriting-packed-refs:
files-backend: don't rewrite the `packed-refs` file unnecessarily
t1409: check that `packed-refs` is not rewritten unnecessarily
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Even when we are deleting references, we needn't overwrite the
`packed-refs` file if the references that we are deleting only exist
as loose references. Implement this optimization as follows:
* Add a function `is_packed_transaction_needed()`, which checks
whether a given packed-refs transaction actually needs to be carried
out (i.e., it returns false if the transaction obviously wouldn't
have any effect). This function must be called while holding the
`packed-refs` lock to avoid races.
* Change `files_transaction_prepare()` to check whether the
packed-refs transaction is actually needed. If not, squelch it, but
continue holding the `packed-refs` lock until the end of the
transaction to avoid races.
This fixes a mild regression caused by dc39e09942 (files_ref_store:
use a transaction to update packed refs, 2017-09-08). Before that
commit, unnecessary rewrites of `packed-refs` were suppressed by
`repack_without_refs()`. But the transaction-based writing introduced
by that commit didn't perform that optimization.
Note that the pre-dc39e09942 code still had to *read* the whole
`packed-refs` file to determine that the rewrite could be skipped, so
the performance for the cases that the write could be elided was
`O(N)` in the number of packed references both before and after
dc39e09942. But after that commit the constant factor increased.
This commit reimplements the optimization of eliding unnecessary
`packed-refs` rewrites. That, plus the fact that since
cfa2e29c34 (packed_ref_store: get rid of the `ref_cache` entirely,
2017-03-17) we don't necessarily have to read the whole `packed-refs`
file at all, means that deletes of one or a few loose references can
now be done with `O(n lg N)` effort, where `n` is the number of loose
references being deleted and `N` is the total number of packed
references.
This commit fixes two tests in t1409.
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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There is no need to rewrite the `packed-refs` file except for the case
that we are deleting a reference that has a packed version. Verify
that `packed-refs` is not rewritten when it shouldn't be.
In fact, two of these tests fail:
* A new (empty) `packed-refs` file is created when deleting any loose
reference and no `packed-refs` file previously existed.
* The `packed-refs` file is rewritten unnecessarily when deleting a
loose reference that has no packed counterpart.
Both problems will be fixed in the next commit.
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Signed-off-by: Junio C Hamano <gitster@pobox.com>
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There was a recent semantic mismerge in the codepath to write out a
section of a configuration section, which has been corrected.
* rs/config-write-section-fix:
config: flip return value of write_section()
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d9bd4cbb9cc (config: flip return value of store_write_*()) made
write_section() follow the convention of write(2) to return -1 on error
and the number of written bytes on success. 3b48045c6c7 (Merge branch
'sd/branch-copy') changed it back to returning 0 on error and 1 on
success, but left its callers still checking for negative values.
Let write_section() follow the convention of write(2) again to meet the
expectations of its callers.
Reported-by: Jeff King <peff@peff.net>
Signed-off-by: Rene Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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We've been waiting long enough, a few more would not hurt ;-)
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Leak fixes.
* ma/reduce-heads-leakfix:
reduce_heads: fix memory leaks
builtin/merge-base: free commit lists
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We currently have seven callers of `reduce_heads(foo)`. Six of them do
not use the original list `foo` again, and actually, all six of those
end up leaking it.
Introduce and use `reduce_heads_replace(&foo)` as a leak-free version of
`foo = reduce_heads(foo)` to fix several of these. Fix the remaining
leaks using `free_commit_list()`.
While we're here, document `reduce_heads()` and mark it as `extern`.
Signed-off-by: Martin Ågren <martin.agren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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In several functions, we iterate through a commit list by assigning
`result = result->next`. As a consequence, we lose the original pointer
and eventually leak the list.
Rewrite the loops so that we keep the original pointers, then call
`free_commit_list()`. Various alternatives were considered:
1) Use `UNLEAK(result)` before the loop. Simple change, but not very
pretty. These would definitely be new lows among our usages of UNLEAK.
2) Use `pop_commit()` when looping. Slightly less simple change, but it
feels slightly preferable to first display the list, then free it.
3) As in this patch, but with `UNLEAK()` instead of freeing. We'd still
go through all the trouble of refactoring the loop, and because it's not
super-obvious that we're about to exit, let's just free the lists -- it
probably doesn't affect the runtime much.
In `handle_independent()` we can drop `result` while we're here and
reuse the `revs`-variable instead. That matches several other users of
`reduce_heads()`. The memory-leak that this hides will be addressed in
the next commit.
Signed-off-by: Martin Ågren <martin.agren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Leak fixes.
* ma/bisect-leakfix:
bisect: fix memory leak when returning best element
bisect: fix off-by-one error in `best_bisection_sorted()`
bisect: fix memory leak in `find_bisection()`
bisect: change calling-convention of `find_bisection()`
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When `find_bisection()` returns a single list entry, it leaks the other
entries. Move the to-be-returned item to the front and free the
remainder.
Signed-off-by: Martin Ågren <martin.agren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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After we have sorted the `cnt`-many commits that we have selected, we
place them into the commit list. We then set `p->next` to NULL, but as
we do so, `p` is already pointing one beyond item number `cnt`. Indeed,
we check whether `p` is NULL before dereferencing it.
This only matters if there are TREESAME-commits. Since they should be
skipped, they are not included in `cnt` and we will hit the situation
where we set `p->next` to NULL. As a result, the list will be one longer
than it should be. The last commit in the list will be one which occurs
earlier, or which shouldn't be included.
Do not update `p` the very last round in the loop. This ensures that
after the loop, `p->next` points to the remainder of the list, and we
can set it to NULL. While we're here, free that remainder to fix a
memory leak.
Signed-off-by: Martin Ågren <martin.agren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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`find_bisection()` rebuilds the commit list it is given by reversing it
and skipping uninteresting commits. The uninteresting list entries are
leaked. Free them to fix the leak.
Signed-off-by: Martin Ågren <martin.agren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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This function takes a commit list and returns a commit list. The
returned list is built by modifying the original list. Thus the caller
should not use the original list again (and after the next commit fixes
a memory leak, it must not).
Change the function signature so that it takes a **list and has void
return type. That should make it harder to misuse this function.
While we're here, document this function.
Signed-off-by: Martin Ågren <martin.agren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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A fix for an ancient bug in "git apply --ignore-space-change" codepath.
* rs/apply-fuzzy-match-fix:
apply: avoid out-of-bounds access in fuzzy_matchlines()
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fuzzy_matchlines() uses a pointers to the first and last characters of
two lines to keep track while matching them. This makes it impossible
to deal with empty strings. It accesses characters before the start of
empty lines. It can also access characters after the end when checking
for trailing whitespace in the main loop.
Avoid that by using pointers to the first character and the one *after*
the last one. This is well-defined as long as the latter is not
dereferenced. Basically rewrite the function based on that premise; it
becomes much simpler as a result. There is no need to check for
leading whitespace outside of the main loop anymore.
Reported-by: Mahmoud Al-Qudsi <mqudsi@neosmart.net>
Signed-off-by: Rene Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Doc update around use of "format-patch --subject-prefix" etc.
* ad/submitting-patches-title-decoration:
doc/SubmittingPatches: correct subject guidance
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The examples and common practice for adding markers such as "RFC" or
"v2" to the subject of patch emails is to have them within the same
brackets as the "PATCH" text, not after the closing bracket. Further,
the practice of `git format-patch` and the like, as well as what appears
to be the more common pratice on the mailing list, is to use "[RFC
PATCH]", not "[PATCH/RFC]".
Update the SubmittingPatches article to match and to reference the
`format-patch` helper arguments, and also make some minor text
clarifications in the area.
Signed-off-by: Adam Dinwoodie <adam@dinwoodie.org>
Helped-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Error checking in "git imap-send" for empty response has been
improved.
* rs/imap-send-next-arg-fix:
imap-send: handle missing response codes gracefully
imap-send: handle NULL return of next_arg()
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Response codes are optional. Exit parse_response_code() early if it's
passed a NULL string, indicating that we reached the end of the reply.
This avoids dereferencing said NULL pointer.
Noticed-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Rene Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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