Commit Graph

17175 Commits

Author SHA1 Message Date
Junio C Hamano
0a1cceb9bd Merge branch 'en/dir-rename-tests'
More preliminary tests have been added to document desired outcome
of various "directory rename" situations.

* en/dir-rename-tests:
  t6423: more involved rules for renaming directories into each other
  t6423: update directory rename detection tests with new rule
  t6423: more involved directory rename test
  directory-rename-detection.txt: update references to regression tests
2020-11-09 14:06:25 -08:00
Junio C Hamano
596ad33080 Merge branch 'js/default-branch-name-part-4-minus-1'
Adjust tests so that they won't scream when the default initial
branch name is changed to 'main'.

* js/default-branch-name-part-4-minus-1:
  t1400: prepare for `main` being default branch name
  tests: prepare aligned mentions of the default branch name
  t9902: prepare a test for the upcoming default branch name
  t3200: prepare for `main` being shorter than `master`
  t5703: adjust a test case for the upcoming default branch name
  t6200: adjust suppression pattern to also match "main"
  tests: start moving to a different default main branch name
  t9801: use `--` in preparation for default branch rename
  fmt-merge-msg: also suppress "into main" by default
2020-11-02 13:17:46 -08:00
Junio C Hamano
292e53fa9d Merge branch 've/userdiff-bash'
The userdiff pattern learned to identify the function definition in
POSIX shells and bash.

* ve/userdiff-bash:
  userdiff: support Bash
2020-11-02 13:17:46 -08:00
Junio C Hamano
f74f5e71d5 Merge branch 'js/t7006-cleanup'
Code clean-up.

* js/t7006-cleanup:
  t7006: Use test_path_is_* functions in test script
2020-11-02 13:17:45 -08:00
Junio C Hamano
1ae0949a03 Merge branch 'mk/diff-ignore-regex'
"git diff" family of commands learned the "-I<regex>" option to
ignore hunks whose changed lines all match the given pattern.

* mk/diff-ignore-regex:
  diff: add -I<regex> that ignores matching changes
  merge-base, xdiff: zero out xpparam_t structures
2020-11-02 13:17:44 -08:00
Junio C Hamano
c23cd78e81 Merge branch 'jt/apply-reverse-twice'
"git apply -R" did not handle patches that touch the same path
twice correctly, which has been corrected.  This is most relevant
in a patch that changes a path from a regular file to a symbolic
link (and vice versa).

* jt/apply-reverse-twice:
  apply: when -R, also reverse list of sections
2020-11-02 13:17:43 -08:00
Junio C Hamano
73af6a4fab Merge branch 'sc/sequencer-gpg-octopus'
"git rebase --rebase-merges" did not correctly pass --gpg-sign
command line option to underlying "git merge" when replaying a merge
using non-default merge strategy or when replaying an octopus merge
(because replaying a two-head merge with the default strategy was
done in a separate codepath, the problem did not trigger for most
users), which has been corrected.

* sc/sequencer-gpg-octopus:
  t3435: add tests for rebase -r GPG signing
  sequencer: pass explicit --no-gpg-sign to merge
  sequencer: fix gpg option passed to merge subcommand
2020-11-02 13:17:43 -08:00
Junio C Hamano
9879f3b3f6 Merge branch 'en/test-selector'
Our test scripts can be told to run only individual pieces while
skipping others with the "--run=..." option; they were taught to
take a substring of test title, in addition to numbers, to name the
test pieces to run.

* en/test-selector:
  test-lib: reduce verbosity of skipped tests
  t6006, t6012: adjust tests to use 'setup' instead of synonyms
  test-lib: allow selecting tests by substring/glob with --run
2020-11-02 13:17:43 -08:00
Junio C Hamano
e0f6ad2984 Merge branch 'tk/credential-config'
"git credential' didn't honor the core.askPass configuration
variable (among other things), which has been corrected.

* tk/credential-config:
  credential: load default config
2020-11-02 13:17:39 -08:00
Junio C Hamano
b6fb70c985 Merge branch 'dl/diff-merge-base'
"git diff A...B" learned "git diff --merge-base A B", which is a
longer short-hand to say the same thing.

* dl/diff-merge-base:
  contrib/completion: complete `git diff --merge-base`
  builtin/diff-tree: learn --merge-base
  builtin/diff-index: learn --merge-base
  t4068: add --merge-base tests
  diff-lib: define diff_get_merge_base()
  diff-lib: accept option flags in run_diff_index()
  contrib/completion: extract common diff/difftool options
  git-diff.txt: backtick quote command text
  git-diff-index.txt: make --cached description a proper sentence
  t4068: remove unnecessary >tmp
2020-11-02 13:17:39 -08:00
Junio C Hamano
0be2d65132 Merge branch 'ds/maintenance-commit-graph-auto-fix'
Test-coverage enhancement of running commit-graph task "git
maintenance" as needed led to discovery and fix of a bug.

* ds/maintenance-commit-graph-auto-fix:
  maintenance: core.commitGraph=false prevents writes
  maintenance: test commit-graph auto condition
2020-11-02 13:17:39 -08:00
Junio C Hamano
307a53dd99 Merge branch 'ds/commit-graph-merging-fix'
When "git commit-graph" detects the same commit recorded more than
once while it is merging the layers, it used to die.  The code now
ignores all but one of them and continues.

* ds/commit-graph-merging-fix:
  commit-graph: don't write commit-graph when disabled
  commit-graph: ignore duplicates when merging layers
2020-11-02 13:17:39 -08:00
Junio C Hamano
d5c2d1a0aa Merge branch 'es/test-cmp-typocatcher'
A test helper "test_cmp A B" was taught to diagnose missing files A
or B as a bug in test, but some tests legitimately wanted to notice
a failure to even create file B as an error, in addition to leaving
the expected result in it, and were misdiagnosed as a bug.  This
has been corrected.

* es/test-cmp-typocatcher:
  Revert "test_cmp: diagnose incorrect arguments"
2020-11-02 13:17:38 -08:00
Junio C Hamano
cd47bbe164 Merge branch 'jk/fast-import-marks-alloc-fix'
"git fast-import" wasted a lot of memory when many marks were in use.

* jk/fast-import-marks-alloc-fix:
  fast-import: fix over-allocation of marks storage
2020-11-02 13:17:37 -08:00
Junio C Hamano
6b9f5096eb Merge branch 'js/avoid-split-sideband-message'
The side-band status report can be sent at the same time as the
primary payload multiplexed, but the demultiplexer on the receiving
end incorrectly split a single status report into two, which has
been corrected.

* js/avoid-split-sideband-message:
  test-pkt-line: drop colon from sideband identity
  sideband: report unhandled incomplete sideband messages as bugs
  sideband: avoid reporting incomplete sideband messages
2020-11-02 13:17:37 -08:00
Junio C Hamano
c8b7c0272a Merge branch 'cm/t7xxx-cleanup'
Micro clean-up.

* cm/t7xxx-cleanup:
  t7102: prepare expected output inside test_expect_* block
  t7201: put each command on a separate line
  t7201: use 'git -C' to avoid subshell
  t7102,t7201: remove whitespace after redirect operator
  t7102,t7201: remove unnecessary blank spaces in test body
  t7101,t7102,t7201: modernize test formatting
2020-10-30 13:04:24 -07:00
Junio C Hamano
a42035fbe4 Merge branch 'ct/t0000-use-test-path-is-file'
Micro clean-up of a test script.

* ct/t0000-use-test-path-is-file:
  t0000: use test_path_is_file instead of "test -f"
2020-10-30 13:04:24 -07:00
Junio C Hamano
678c787c00 Merge branch 'en/t7518-unflake'
Work around flakiness in a test.

* en/t7518-unflake:
  t7518: fix flaky grep invocation
2020-10-30 13:04:23 -07:00
Junio C Hamano
0e41cfad62 Merge branch 'dl/checkout-guess'
"git checkout" learned to use checkout.guess configuration variable
and enable/disable its "--[no-]guess" option accordingly.

* dl/checkout-guess:
  checkout: learn to respect checkout.guess
  Documentation/config/checkout: replace sq with backticks
2020-10-27 15:09:51 -07:00
Junio C Hamano
f3cfeb3078 Merge branch 'dl/checkout-p-merge-base'
"git checkout -p A...B [-- <path>]" did not work, even though the
same command without "-p" correctly used the merge-base between
commits A and B.

* dl/checkout-p-merge-base:
  t2016: add a NEEDSWORK about the PERL prerequisite
  add-patch: add NEEDSWORK about comparing commits
  Doc: document "A...B" form for <tree-ish> in checkout and switch
  builtin/checkout: fix `git checkout -p HEAD...` bug
2020-10-27 15:09:51 -07:00
Junio C Hamano
40696c6727 Merge branch 'sb/clone-origin'
"git clone" learned clone.defaultremotename configuration variable
to customize what nickname to use to call the remote the repository
was cloned from.

* sb/clone-origin:
  clone: allow configurable default for `-o`/`--origin`
  clone: read new remote name from remote_name instead of option_origin
  clone: validate --origin option before use
  refs: consolidate remote name validation
  remote: add tests for add and rename with invalid names
  clone: use more conventional config/option layering
  clone: add tests for --template and some disallowed option pairs
2020-10-27 15:09:50 -07:00
Junio C Hamano
de0a7effc8 Merge branch 'sk/force-if-includes'
"git push --force-with-lease[=<ref>]" can easily be misused to lose
commits unless the user takes good care of their own "git fetch".
A new option "--force-if-includes" attempts to ensure that what is
being force-pushed was created after examining the commit at the
tip of the remote ref that is about to be force-replaced.

* sk/force-if-includes:
  t, doc: update tests, reference for "--force-if-includes"
  push: parse and set flag for "--force-if-includes"
  push: add reflog check for "--force-if-includes"
2020-10-27 15:09:49 -07:00
Junio C Hamano
52b8c8c716 Merge branch 'ds/maintenance-part-2'
"git maintenance", an extended big brother of "git gc", continues
to evolve.

* ds/maintenance-part-2:
  maintenance: add incremental-repack auto condition
  maintenance: auto-size incremental-repack batch
  maintenance: add incremental-repack task
  midx: use start_delayed_progress()
  midx: enable core.multiPackIndex by default
  maintenance: create auto condition for loose-objects
  maintenance: add loose-objects task
  maintenance: add prefetch task
2020-10-27 15:09:47 -07:00
Junio C Hamano
26bb5437f6 Merge branch 'rs/worktree-list-show-locked'
"git worktree list" now shows if each worktree is locked.  This
possibly may open us to show other kinds of states in the future.

* rs/worktree-list-show-locked:
  worktree: teach `list` to annotate locked worktree
2020-10-27 15:09:47 -07:00
Junio C Hamano
2810828d7c Merge branch 'sd/userdiff-css-update'
Userdiff for CSS update.

* sd/userdiff-css-update:
  userdiff: expand detected chunk headers for css
2020-10-27 15:09:46 -07:00
Junio C Hamano
dc53e7bc20 Merge branch 'kb/userdiff-rust-macro-rules'
Userdiff for Rust update.

* kb/userdiff-rust-macro-rules:
  userdiff: recognize 'macro_rules!' as starting a Rust function block
2020-10-27 15:09:46 -07:00
Junio C Hamano
a8a49ebf61 Merge branch 'js/userdiff-php'
Userdiff for PHP update.

* js/userdiff-php:
  userdiff: PHP: catch "abstract" and "final" functions
2020-10-27 15:09:46 -07:00
Jeff King
712b0377db test-pkt-line: drop colon from sideband identity
We pass "sideband: " as our identity for errors to recv_sideband(). But
it already adds the trailing colon and space. This doesn't invalidate
any tests, but it looks funny when you examine the test output.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-10-27 11:57:51 -07:00
Junio C Hamano
f34687dc81 Merge branch 'jk/committer-date-is-author-date-fix'
In 2.29, "--committer-date-is-author-date" option of "rebase" and
"am" subcommands lost the e-mail address by mistake, which has been
corrected.

* jk/committer-date-is-author-date-fix:
  rebase: fix broken email with --committer-date-is-author-date
  am: fix broken email with --committer-date-is-author-date
  t3436: check --committer-date-is-author-date result more carefully
2020-10-26 14:59:58 -07:00
Johannes Schindelin
3224b0f0bb t1400: prepare for main being default branch name
In addition to the trivial search-and-replace, there are three
non-trivial adjustments necessary.

Mark the respective test cases with the transitional prereq and make
those non-trivial adjustments early, to make this change easier to
review.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-10-23 08:57:43 -07:00
Johannes Schindelin
66713e84e7 tests: prepare aligned mentions of the default branch name
In some tests, the default branch name is part of aligned output. As we
want to change the default branch name to `main`, which is two
characters shorter than the old default branch name, we will have to
adjust those tests.

Since we use the original default branch name until the entire test
suite has been adjusted accordingly, the touched test cases need to be
guarded by a prereq (that is so far disabled so that they are skipped
for now).

The test cases that depend on those test cases that are newly guarded by
that prereq naturally have to be guarded, too.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-10-23 08:57:42 -07:00
Johannes Schindelin
8164360fc8 t9902: prepare a test for the upcoming default branch name
We need to adjust a test that uses a prefix of the default branch name,
to accommodate for `main` being used soon.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-10-23 08:57:42 -07:00
Johannes Schindelin
56300ff356 t3200: prepare for main being shorter than master
In the test case adjusted by this patch, we want to cut just after the
longest shown ref name. Since `main` is shorter than `master`, we need
to decrease the number of characters. Since `topic` is shown, too, and
since that is only one character shorter than `master`, we decrement the
length by one instead of two.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-10-23 08:57:41 -07:00
Johannes Schindelin
97cf8d50b5 t5703: adjust a test case for the upcoming default branch name
We want to rename the default branch name used by `git init` in the near
future, using `main` as the new name.

In preparation for that, we adjust a test case that wants to rename the
default branch to a different name that however has the same length. We
use `none` as that name because it matches the length of `main`.

As this test case cannot possibly pass until the default branch name is
_actually_ changed, we temporarily guard it behind a special-purpose
prereq, until the test suite is fully converted to use that new default
branch name.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-10-23 08:57:41 -07:00
Johannes Schindelin
392ab3d9ff t6200: adjust suppression pattern to also match "main"
In preparation to running t6200 with the default branch name set to
"main", let's adjust the only non-trivial aspect thereof. The rest will
be done via a trivial `sed` invocation.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-10-23 08:57:41 -07:00
Johannes Schindelin
704fed9ea2 tests: start moving to a different default main branch name
To allow for an incremental conversion to a new default main branch
name, let's introduce `GIT_TEST_DEFAULT_MAIN_BRANCH_NAME`. This
environment variable can be set at the top of each converted test
script, overriding the default main branch name to use when initializing
new repositories (or cloning empty repositories).

Note: the `GIT_TEST_DEFAULT_MAIN_BRANCH_NAME` is _not_ intended to be
used manually; many tests require a specific main branch name and cannot
simply work with another one. This `GIT_TEST_*` variable is meant purely
for the transitional period while the entire test suite is converted to
use `main` as the initial branch name by default.

We also introduce the `PREPARE_FOR_MAIN_BRANCH` prereq that determines
whether the default main branch name is `main`, and adjust a couple of
test functions to use it. This prereq will be used to temporarily
disable a couple test cases to allow for adjusting the test script
incrementally. Once an entire test is adjusted, we will adjust the test
so that it is run with `GIT_TEST_DEFAULT_MAIN_BRANCH_NAME=main`.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-10-23 08:57:40 -07:00
Johannes Schindelin
25ad0dc130 t9801: use -- in preparation for default branch rename
Seeing as we want to use `main` as the new default branch name used by
`git init`, and that `main` is used as directory name in t9801, let's
tighten the rev-list arguments to make it explicit when we are referring
to a ref instead of a directory.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-10-23 08:57:40 -07:00
Jeff King
5f35edd9d7 rebase: fix broken email with --committer-date-is-author-date
Commit 7573cec52c (rebase -i: support --committer-date-is-author-date,
2020-08-17) copied the committer ident-parsing code from builtin/am.c.
And in doing so, it copied a bug in which we always set the email to an
empty string. We fixed the version in git-am in the previous commit;
this commit fixes the copied code.

Reported-by: VenomVendor <info@venomvendor.com>
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-10-23 08:25:22 -07:00
Jeff King
16b0bb99ea am: fix broken email with --committer-date-is-author-date
Commit e8cbe2118a (am: stop exporting GIT_COMMITTER_DATE, 2020-08-17)
rewrote the code for setting the committer date to use fmt_ident(),
rather than setting an environment variable and letting commit_tree()
handle it. But it introduced two bugs:

  - we use the author email string instead of the committer email

  - when parsing the committer ident, we used the wrong variable to
    compute the length of the email, resulting in it always being a
    zero-length string

This commit fixes both, which causes our test of this option via the
rebase "apply" backend to now succeed.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-10-23 08:25:19 -07:00
Jeff King
56706dba33 t3436: check --committer-date-is-author-date result more carefully
After running "rebase --committer-date-is-author-date", we confirm that
the committer date is the same as the author date. However, we don't
look at any other parts of the committer ident line to make sure we
didn't screw them up. And indeed, there are a few bugs here. Depending
on the rebase backend in use, we may accidentally use the author email
instead of the committer's, or even an empty string.

Let's teach our test_ctime_is_atime helper to check the committer name
and email, which reveals several failing tests.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-10-23 08:25:17 -07:00
Junio C Hamano
31f4c833ac t7102: prepare expected output inside test_expect_* block
That way we can notice if there is a breakage/bug in the parts of
the test that prepare the expected outcome, which is how modern
tests are arranged.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-10-22 10:39:05 -07:00
Charvi Mendiratta
1c0ab5c7fa t7201: put each command on a separate line
Modern practice is to avoid multiple commands per line,
and instead place each command on its own line.

Signed-off-by: Charvi Mendiratta <charvi077@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-10-22 10:37:57 -07:00
Charvi Mendiratta
627f2d79de t7201: use 'git -C' to avoid subshell
Signed-off-by: Charvi Mendiratta <charvi077@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-10-22 10:37:57 -07:00
Charvi Mendiratta
c327762f81 t7102,t7201: remove whitespace after redirect operator
According to Documentation/CodingGuidelines, redirect
operator is written with space before, but no space
after them.

Let's remove these whitespaces after redirect operators.

Signed-off-by: Charvi Mendiratta <charvi077@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-10-22 10:37:54 -07:00
Victor Engmark
2ff6c34612 userdiff: support Bash
Support POSIX, bashism and mixed function declarations, all four
compound command types, trailing comments and mixed whitespace.

Even though Bash allows locale-dependent characters in function names
<https://unix.stackexchange.com/a/245336/3645>, only detect function
names with characters allowed by POSIX.1-2017
<https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap03.html#tag_03_235>
for simplicity. This should cover the vast majority of use cases, and
produces system-agnostic results.

Since a word pattern has to be specified, but there is no easy way to
know the default word pattern, use the default `IFS` characters for a
starter. A later patch can improve this.

Signed-off-by: Victor Engmark <victor@engmark.name>
Acked-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-10-22 10:29:30 -07:00
Joey Salazar
4e1bee9a99 t7006: Use test_path_is_* functions in test script
Modernize the test by replacing `test -e` instances with
`test_path_is_file` helper functions, and `! test -e` with
`test_path_is_missing`, for better readability and diagnostic messages.

Signed-off-by: Joey Salazar <jgsal@protonmail.com>
Reviewed-by: Phillip Wood <phillip.wood123@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-10-21 11:43:32 -07:00
Jonathan Tan
b0f266de11 apply: when -R, also reverse list of sections
A patch changing a symlink into a file is written with 2 sections (in
the code, represented as "struct patch"): firstly, the deletion of the
symlink, and secondly, the creation of the file. When applying that
patch with -R, the sections are reversed, so we get:

 (1) creation of a symlink, then
 (2) deletion of a file.

This causes an issue when the "deletion of a file" section is checked,
because Git observes that the so-called file is not a file but a
symlink, resulting in a "wrong type" error message.

What we want is:

 (1) deletion of a file, then
 (2) creation of a symlink.

In the code, this is reflected in the behavior of previous_patch() when
invoked from check_preimage() when the deletion is checked. Creation
then deletion means that when the deletion is checked, previous_patch()
returns the creation section, triggering a mode conflict resulting in
the "wrong type" error message. But deletion then creation means that
when the deletion is checked, previous_patch() returns NULL, so the
deletion mode is checked against lstat, which is what we want.

There are also other ways a patch can contain 2 sections referencing the
same file, for example, in 7a07841c0b ("git-apply: handle a patch that
touches the same path more than once better", 2008-06-27). "git apply
-R" fails in the same way, and this commit makes this case succeed.

Therefore, when building the list of sections, build them in reverse
order (by adding to the front of the list instead of the back) when -R
is passed.

Helped-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-10-20 15:21:41 -07:00
Johannes Schindelin
17e7dbbcbc sideband: avoid reporting incomplete sideband messages
In 2b695ecd74 (t5500: count objects through stderr, not trace,
2020-05-06) we tried to ensure that the "Total 3" message could be
grepped in Git's output, even if it sometimes got chopped up into
multiple lines in the trace machinery.

However, the first instance where this mattered now goes through the
sideband machinery, where it is _still_ possible for messages to get
chopped up: it *is* possible for the standard error stream to be sent
byte-for-byte and hence it can be easily interrupted. Meaning: it is
possible for the single line that we're looking for to be chopped up
into multiple sideband packets, with a primary packet being delivered
between them.

This seems to happen occasionally in the `vs-test` part of our CI
builds, i.e. with binaries built using Visual C, but not when building
with GCC or clang; The symptom is that t5500.43 fails to find a line
matching `remote: Total 3` in the `log` file, which ends in something
along these lines:

	remote: Tota
	remote: l 3 (delta 0), reused 0 (delta 0), pack-reused 0

This should not happen, though: we have code in `demultiplex_sideband()`
_specifically_ to stitch back together lines that were delivered in
separate sideband packets.

However, this stitching was broken in a subtle way in fbd76cd450
(sideband: reverse its dependency on pkt-line, 2019-01-16): before that
change, incomplete sideband lines would not be flushed upon receiving a
primary packet, but after that patch, they would be.

The subtleness of this bug comes from the fact that it is easy to get
confused by the ambiguous meaning of the `break` keyword: after writing
the primary packet contents, the `break;` in the original version of
`recv_sideband()` does _not_ break out of the `while` loop, but instead
only ends the `switch` case:

	while (!retval) {
		[...]
		switch (band) {
			[...]
		case 1:
/* Write the contents of the primary packet */
			write_or_die(out, buf + 1, len);
/* Here, we do *not* break out of the loop, `retval` is unchanged */
			break;
		[...]
	}

	if (outbuf.len) {
/* Write any remaining sideband messages lacking a trailing LF */
		strbuf_addch(&outbuf, '\n');
		xwrite(2, outbuf.buf, outbuf.len);
	}

In contrast, after fbd76cd450 (sideband: reverse its dependency on
pkt-line, 2019-01-16), the body of the `while` loop was extracted into
`demultiplex_sideband()`, crucially _including_ the logic to write
incomplete sideband messages:

	switch (band) {
	[...]
	case 1:
		*sideband_type = SIDEBAND_PRIMARY;
/* This does not break out of the loop: the loop is in the caller */
		break;
	[...]
	}

cleanup:
	[...]
/* This logic is now no longer _outside_ the loop but _inside_ */
	if (scratch->len) {
		strbuf_addch(scratch, '\n');
		xwrite(2, scratch->buf, scratch->len);
	}

The correct way to fix this is to return from `demultiplex_sideband()`
early. The caller will then write out the contents of the primary packet
and continue looping. The `scratch` buffer for incomplete sideband
messages is owned by that caller, and will continue to accumulate the
remainder(s) of those messages. The loop will only end once
`demultiplex_sideband()` returned non-zero _and_ did not indicate a
primary packet, which is the case only when we hit the `cleanup:` path,
in which we take care of flushing any unfinished sideband messages and
release the `scratch` buffer.

To ensure that this does not get broken again, we introduce a pair of
subcommands of the `pkt-line` test helper that specifically chop up the
sideband message and squeeze a primary packet into the middle.

Final note: The other test case touched by 2b695ecd74 (t5500: count
objects through stderr, not trace, 2020-05-06) is not affected by this
issue because the sideband machinery is not involved there.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-10-20 13:31:00 -07:00
Charvi Mendiratta
78b8d9340d t7102,t7201: remove unnecessary blank spaces in test body
t7102 and t7201 still follow the old style of having blank
lines around test body, which is not consistence with our
current practice.

Let's remove those unnecessary blank lines.

Signed-off-by: Charvi Mendiratta <charvi077@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-10-20 13:21:43 -07:00
Charvi Mendiratta
e166fe363d t7101,t7102,t7201: modernize test formatting
Some tests in these scripts are formatted using a very old style:
        test_expect_success \
            'title' \
            'body line 1 &&
             body line 2'

Updating the formatting to the modern style:
        test_expect_success 'title' '
            body line 1 &&
            body line 2
        '

Signed-off-by: Charvi Mendiratta <charvi077@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-10-20 13:21:43 -07:00