Commit Graph

50939 Commits

Author SHA1 Message Date
Junio C Hamano
bd0f794342 Merge branch 'nd/worktree-move'
"git worktree" learned move and remove subcommands.

* nd/worktree-move:
  t2028: fix minor error and issues in newly-added "worktree move" tests
  worktree remove: allow it when $GIT_WORK_TREE is already gone
  worktree remove: new command
  worktree move: refuse to move worktrees with submodules
  worktree move: accept destination as directory
  worktree move: new command
  worktree.c: add update_worktree_location()
  worktree.c: add validate_worktree()
2018-03-14 12:01:05 -07:00
Junio C Hamano
436d18f2d0 Merge branch 'pw/add-p-recount'
"git add -p" has been lazy in coalescing split patches before
passing the result to underlying "git apply", leading to corner
case bugs; the logic to prepare the patch to be applied after hunk
selections has been tightened.

* pw/add-p-recount:
  add -p: don't rely on apply's '--recount' option
  add -p: fix counting when splitting and coalescing
  add -p: calculate offset delta for edited patches
  add -p: adjust offsets of subsequent hunks when one is skipped
  t3701: add failing test for pathological context lines
  t3701: don't hard code sha1 hash values
  t3701: use test_write_lines and write_script
  t3701: indent here documents
  add -i: add function to format hunk header
2018-03-14 12:01:04 -07:00
Junio C Hamano
b423234dde Merge branch 'ab/pre-auto-gc-battery'
A sample auto-gc hook (in contrib/) to skip auto-gc while on
battery has been updated to almost always allow running auto-gc
unless on_ac_power command is absolutely sure that we are on
battery power (earlier, it skipped unless the command is sure that
we are on ac power).

* ab/pre-auto-gc-battery:
  hooks/pre-auto-gc-battery: allow gc to run on non-laptops
2018-03-14 12:01:04 -07:00
Junio C Hamano
571e472dc4 Merge branch 'sg/test-x'
Running test scripts under -x option of the shell is often not a
useful way to debug them, because the error messages from the
commands tests try to capture and inspect are contaminated by the
tracing output by the shell.  An earlier work done to make it more
pleasant to run tests under -x with recent versions of bash is
extended to cover posix shells that do not support BASH_XTRACEFD.

* sg/test-x:
  travis-ci: run tests with '-x' tracing
  t/README: add a note about don't saving stderr of compound commands
  t1510-repo-setup: mark as untraceable with '-x'
  t9903-bash-prompt: don't check the stderr of __git_ps1()
  t5570-git-daemon: don't check the stderr of a subshell
  t5526: use $TRASH_DIRECTORY to specify the path of GIT_TRACE log file
  t5500-fetch-pack: don't check the stderr of a subshell
  t3030-merge-recursive: don't check the stderr of a subshell
  t1507-rev-parse-upstream: don't check the stderr of a shell function
  t: add means to disable '-x' tracing for individual test scripts
  t: prevent '-x' tracing from interfering with test helpers' stderr
2018-03-14 12:01:03 -07:00
Junio C Hamano
d92a015660 Merge branch 'rj/test-i18ngrep'
Test updates.

* rj/test-i18ngrep:
  t5536: simplify checking of messages output to stderr
  t4151: consolidate multiple calls to test_i18ngrep
2018-03-14 12:01:03 -07:00
Junio C Hamano
787aa97f21 Merge branch 'ma/roll-back-lockfiles'
Some codepaths used to take a lockfile and did not roll it back;
they are automatically rolled back at program exit, so there is no
real "breakage", but it still is a good practice to roll back when
you are done with a lockfile.

* ma/roll-back-lockfiles:
  sequencer: do not roll back lockfile unnecessarily
  merge: always roll back lock in `checkout_fast_forward()`
  merge-recursive: always roll back lock in `merge_recursive_generic()`
  sequencer: always roll back lock in `do_recursive_merge()`
  sequencer: make lockfiles non-static
2018-03-14 12:01:03 -07:00
Junio C Hamano
868f7d2338 Merge branch 'nd/diff-stat-with-summary'
"git diff" and friends learned "--compact-summary" that shows the
information usually given with the "--summary" option on the same
line as the diffstat output of the "--stat" option (which saves
vertical space and keeps info on a single path at the same place).

* nd/diff-stat-with-summary:
  diff: add --compact-summary
  diff.c: refactor pprint_rename() to use strbuf
2018-03-14 12:01:02 -07:00
Takuto Ikuta
024aa4696c fetch-pack.c: use oidset to check existence of loose object
When fetching from a repository with large number of refs, because to
check existence of each refs in local repository to packed and loose
objects, 'git fetch' ends up doing a lot of lstat(2) to non-existing
loose form, which makes it slow.

Instead of making as many lstat(2) calls as the refs the remote side
advertised to see if these objects exist in the loose form, first
enumerate all the existing loose objects in hashmap beforehand and use
it to check existence of them if the number of refs is larger than the
number of loose objects.

With this patch, the number of lstat(2) calls in `git fetch` is reduced
from 411412 to 13794 for chromium repository, it has more than 480000
remote refs.

I took time stat of `git fetch` when fetch-pack happens for chromium
repository 3 times on linux with SSD.
* with this patch
8.105s
8.309s
7.640s
avg: 8.018s

* master
12.287s
11.175s
12.227s
avg: 11.896s

On my MacBook Air which has slower lstat(2).
* with this patch
14.501s

* master
1m16.027s

`git fetch` on slow disk will be improved largely.

Signed-off-by: Takuto Ikuta <tikuta@chromium.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-14 11:17:26 -07:00
brian m. carlson
1a750441a7 convert: convert to struct object_id
Convert convert.c to struct object_id.  Add a use of the_hash_algo to
replace hard-coded constants and change a strbuf_add to a strbuf_addstr
to avoid another hard-coded constant.

Note that a strict conversion using the hexsz constant would cause
problems in the future if the internal and user-visible hash algorithms
differed, as anticipated by the hash function transition plan.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-14 09:23:50 -07:00
brian m. carlson
1af64f73a9 sha1_file: introduce a constant for max header length
There were several instances of 32 sprinkled throughout this file, all
of which were used for allocating a buffer to store the header of an
object.  Introduce a constant, MAX_HEADER_LEN, for this purpose.

Note that this constant is slightly larger than required; the longest
possible header is 28 (7 for "commit", 1 for a space, 20 for a 63-bit
length in decimal, and 1 for the NUL).  However, the overallocation
should not cause any problems, so leave it as it is.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-14 09:23:50 -07:00
brian m. carlson
b383a13cc0 Convert lookup_replace_object to struct object_id
Convert both the argument and the return value to be pointers to struct
object_id.  Update the callers and their internals to deal with the new
type.  Remove several temporaries which are no longer needed.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-14 09:23:50 -07:00
brian m. carlson
b4f5aca40e sha1_file: convert read_sha1_file to struct object_id
Convert read_sha1_file to take a pointer to struct object_id and rename
it read_object_file.  Do the same for read_sha1_file_extended.

Convert one use in grep.c to use the new function without any other code
change, since the pointer being passed is a void pointer that is already
initialized with a pointer to struct object_id.  Update the declaration
and definitions of the modified functions, and apply the following
semantic patch to convert the remaining callers:

@@
expression E1, E2, E3;
@@
- read_sha1_file(E1.hash, E2, E3)
+ read_object_file(&E1, E2, E3)

@@
expression E1, E2, E3;
@@
- read_sha1_file(E1->hash, E2, E3)
+ read_object_file(E1, E2, E3)

@@
expression E1, E2, E3, E4;
@@
- read_sha1_file_extended(E1.hash, E2, E3, E4)
+ read_object_file_extended(&E1, E2, E3, E4)

@@
expression E1, E2, E3, E4;
@@
- read_sha1_file_extended(E1->hash, E2, E3, E4)
+ read_object_file_extended(E1, E2, E3, E4)

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-14 09:23:50 -07:00
brian m. carlson
02f0547eaa sha1_file: convert read_object_with_reference to object_id
Convert read_object_with_reference to take pointers to struct object_id.
Update the internals of the function accordingly.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-14 09:23:50 -07:00
brian m. carlson
916bc35b29 tree-walk: convert tree entry functions to object_id
Convert get_tree_entry and find_tree_entry to take pointers to struct
object_id.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-14 09:23:50 -07:00
brian m. carlson
575042a04f streaming: convert istream internals to struct object_id
Convert the various open_istream variants to take a pointer to struct
object_id.  Introduce a temporary, which will be removed later, to work
around the fact that lookup_replace_object still returns a pointer to
unsigned char.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-14 09:23:50 -07:00
brian m. carlson
0d4a8b5b6c tree-walk: convert get_tree_entry_follow_symlinks internals to object_id
Convert the internals of this function to use struct object_id.  This is
one of the last remaining callers of read_sha1_file_extended that has
not been converted yet.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-14 09:23:50 -07:00
brian m. carlson
e8adba25ff builtin/notes: convert static functions to object_id
Convert the remaining static functions to take pointers to struct
object_id.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-14 09:23:50 -07:00
brian m. carlson
f8ddeff509 builtin/fmt-merge-msg: convert remaining code to object_id
We were using the util pointer, which is a pointer to void, as an
unsigned char pointer.  The pointer actually points to a struct
origin_data, which has a struct object_id as its first member, which in
turn has an unsigned char array as its first member, so this was valid.
Since we want to convert this to struct object_id, simply change the
pointer we're using.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-14 09:23:49 -07:00
brian m. carlson
abef9020e3 sha1_file: convert sha1_object_info* to object_id
Convert sha1_object_info and sha1_object_info_extended to take pointers
to struct object_id and rename them to use "oid" instead of "sha1" in
their names.  Update the declaration and definition and apply the
following semantic patch, plus the standard object_id transforms:

@@
expression E1, E2;
@@
- sha1_object_info(E1.hash, E2)
+ oid_object_info(&E1, E2)

@@
expression E1, E2;
@@
- sha1_object_info(E1->hash, E2)
+ oid_object_info(E1, E2)

@@
expression E1, E2, E3;
@@
- sha1_object_info_extended(E1.hash, E2, E3)
+ oid_object_info_extended(&E1, E2, E3)

@@
expression E1, E2, E3;
@@
- sha1_object_info_extended(E1->hash, E2, E3)
+ oid_object_info_extended(E1, E2, E3)

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-14 09:23:49 -07:00
brian m. carlson
7984f23833 Convert remaining callers of sha1_object_info_extended to object_id
Convert the remaining caller of sha1_object_info_extended to use struct
object_id.  Introduce temporaries, which will be removed later, since
there is a dependency loop between sha1_object_info_extended and
lookup_replace_object_extended.  This allows us to convert the code in a
piecemeal fashion instead of all at once.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-14 09:23:49 -07:00
brian m. carlson
4310b0c441 packfile: convert unpack_entry to struct object_id
Convert unpack_entry and read_object to use struct object_id.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-14 09:23:49 -07:00
brian m. carlson
d169d6644c sha1_file: convert retry_bad_packed_offset to struct object_id
Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-14 09:23:49 -07:00
brian m. carlson
e816caa07b sha1_file: convert assert_sha1_type to object_id
Convert this function to take a pointer to struct object_id and rename
it to assert_oid_type.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-14 09:23:49 -07:00
brian m. carlson
83eb08020c builtin/mktree: convert to struct object_id
Convert this file to use struct object_id.  Modify one use of
get_sha1_hex into parse_oid_hex; this is safe since we get the data from
a strbuf.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-14 09:23:49 -07:00
brian m. carlson
ef7b5195f1 streaming: convert open_istream to use struct object_id
Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-14 09:23:49 -07:00
brian m. carlson
17e65451e3 sha1_file: convert check_sha1_signature to struct object_id
Convert this function to take a pointer to struct object_id and rename
it check_object_signature.  Introduce temporaries to convert the return
values of lookup_replace_object and lookup_replace_object_extended into
struct object_id.

The temporaries are needed because in order to convert
lookup_replace_object, open_istream needs to be converted, and
open_istream needs check_sha1_signature to be converted, causing a loop
of dependencies.  The temporaries will be removed in a future patch.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-14 09:23:49 -07:00
brian m. carlson
d61d87bd15 sha1_file: convert read_loose_object to use struct object_id
Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-14 09:23:48 -07:00
brian m. carlson
af8caf33d5 builtin/index-pack: convert struct ref_delta_entry to object_id
Convert this struct to use a member of type object_id.  Convert various
static functions as well.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-14 09:23:48 -07:00
brian m. carlson
e5ec981a4b archive: convert sha1_file_to_archive to struct object_id
Convert this function to take a pointer to struct object_id and rename
it object_file_to_archive.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-14 09:23:48 -07:00
brian m. carlson
015ff4f822 archive: convert write_archive_entry_fn_t to object_id
Convert the write_archive_entry_fn_t type to use a pointer to struct
object_id.  Convert various static functions in the tar and zip
archivers also.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-14 09:23:48 -07:00
brian m. carlson
eedc994f18 builtin/mktag: convert to struct object_id
Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-14 09:23:48 -07:00
brian m. carlson
1731a1e239 replace_object: convert struct replace_object to object_id
Convert the two members of this struct to be instances of struct
object_id.  Adjust the various functions in this file accordingly.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-14 09:23:48 -07:00
brian m. carlson
246d7400fb send-pack: convert remaining functions to struct object_id
Convert the remaining function, feed_object, to use struct object_id.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-14 09:23:48 -07:00
brian m. carlson
16f0705df1 http-walker: convert struct object_request to use struct object_id
Convert struct object_request to use struct object_id by updating the
definition and applying the following semantic patch, plus the standard
object_id transforms:

@@
struct object_request E1;
@@
- E1.sha1
+ E1.oid.hash

@@
struct object_request *E1;
@@
- E1->sha1
+ E1->oid.hash

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-14 09:23:48 -07:00
brian m. carlson
aab9583f7b Convert find_unique_abbrev* to struct object_id
Convert find_unique_abbrev and find_unique_abbrev_r to each take a
pointer to struct object_id.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-14 09:23:48 -07:00
brian m. carlson
40f5555ca3 wt-status: convert struct wt_status_state to object_id
Convert the various *_sha1 members to use struct object_id instead.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-14 09:23:48 -07:00
brian m. carlson
30e677e0e2 strbuf: convert strbuf_add_unique_abbrev to use struct object_id
Convert the declaration and definition of strbuf_add_unique_abbrev to
make it take a pointer to struct object_id.  Predeclare the struct in
strbuf.h, as cache.h includes strbuf.h before it declares the struct,
and otherwise the struct declaration would have the wrong scope.

Apply the following semantic patch, along with the standard object_id
transforms, to adjust the callers:

@@
expression E1, E2, E3;
@@
- strbuf_add_unique_abbrev(E1, E2.hash, E3);
+ strbuf_add_unique_abbrev(E1, &E2, E3);

@@
expression E1, E2, E3;
@@
- strbuf_add_unique_abbrev(E1, E2->hash, E3);
+ strbuf_add_unique_abbrev(E1, E2, E3);

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-14 09:23:48 -07:00
brian m. carlson
1776979573 ref-filter: convert grab_objectname to struct object_id
This is necessary in order to convert find_unique_abbrev.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-14 09:23:47 -07:00
brian m. carlson
df46d77e00 tree: convert read_tree_recursive to struct object_id
Convert the callback functions for read_tree_recursive to take a pointer
to struct object_id.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-14 09:23:47 -07:00
brian m. carlson
5ac913c6eb resolve-undo: convert struct resolve_undo_info to object_id
Convert the sha1 member of this struct to be an array of struct
object_id instead.  This change is needed to convert find_unique_abbrev.

Convert some instances of hard-coded constants to use the_hash_algo as
well.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-14 09:23:47 -07:00
brian m. carlson
6dcb462530 cache-tree: convert remnants to struct object_id
Convert the remaining portions of cache-tree.c to use struct object_id.
Convert several instances of 20 to use the_hash_algo instead.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-14 09:23:47 -07:00
brian m. carlson
fc5cb99f67 cache-tree: convert write_*_as_tree to object_id
Convert write_index_as_tree and write_cache_as_tree to use struct
object_id.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-14 09:23:47 -07:00
brian m. carlson
38b471fae0 builtin/write-tree: convert to struct object_id
This is needed to convert parts of the cache-tree code.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-14 09:23:47 -07:00
brian m. carlson
68ee6dfc9e bulk-checkin: convert index_bulk_checkin to struct object_id
Convert the index_bulk_checkin function, and the static functions it
calls, to use pointers to struct object_id.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-14 09:23:47 -07:00
Martin Ågren
cd56d4e5b2 shortlog: add usage-string for stdin-reading
This has been missing since we learned to print usage, way back in
4e27fb06f (add commit count options to git-shortlog, 2006-10-06).

While at it, drop the [] around "<path>...". This matches `git log -h`
and Documentation/git-{short}log.txt. It formally makes it look like we
do not allow `git shortlog --`, but we gain readability and consistency.

Signed-off-by: Martin Ågren <martin.agren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-13 12:22:56 -07:00
Martin Ågren
a8210328f4 git-shortlog.txt: reorder usages
The first usage we give is the original one where, e.g., `git log` is
piped through `git shortlog`. The description that follows reads the
other way round, by first focusing on the general behavior, then ending
with the behavior when reading from stdin.

It is also a tiny bit odd that what is probably the most common usage
and the one a reader is probably looking for is not at the top of the
list. Of course, it is only a two-item list, so it is not _that_ hard to
find... The next commit will add the original usage to the usage string
in builtin/shortlog.c, and it feels more natural to do so below the
most common usage. To avoid being inconsistent, reorder these two
usages here first.

Signed-off-by: Martin Ågren <martin.agren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-13 12:20:03 -07:00
Jonathan Tan
2b7750c923 sha1_file: restore OBJECT_INFO_QUICK functionality
Support for the OBJECT_INFO_QUICK flag in sha1_object_info_extended()
was added in commit dfdd4afcf9 ("sha1_file: teach
sha1_object_info_extended more flags", 2017-06-26) in order to support
commit e83e71c5e1 ("sha1_file: refactor has_sha1_file_with_flags",
2017-06-26), but it was inadvertently removed in commit 8b4c0103a9
("sha1_file: support lazily fetching missing objects", 2017-12-08).

Restore this functionality.

Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-13 12:11:04 -07:00
SZEDER Gábor
c20bf94abc t9402-git-cvsserver-refs: don't check the stderr of a subshell
Four 'cvs diff' related tests in 't9402-git-cvsserver-refs.sh' fail
when the test script is run with '-x' tracing (and using a shell other
than a Bash version supporting BASH_XTRACEFD).  The reason for those
failures is that the tests check the emptiness of a subshell's stderr,
which includes the trace of commands executed in that subshell as
well, throwing off the emptiness check.

Save the stdout and stderr of the invoked 'cvs' command instead of the
whole subshell, so the latter remains free from tracing output.  (Note
that changing how stdout is saved is only done for the sake of
consistency, it's not necessary for correctness.)

After this change t9402 passes with '-x', even when running with
/bin/sh.

Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-08 15:37:14 -08:00
SZEDER Gábor
54ce2e9be9 t9400-git-cvsserver-server: don't rely on the output of 'test_cmp'
The test 'cvs update (-p)' redirects and checks 'test_cmp's stdout and
even its stderr.  The commit introducing this test in 6e8937a084
(cvsserver: Add test for update -p, 2008-03-27) doesn't discuss why,
in fact its log message only consists of that subject line.  Anyway,
weird as it is, it kind of made sense due to the way that test was
structured:

After a bit of preparation, this test updates four files via CVS and
checks their contents using 'test_cmp', but it does so in a for loop
iterating over the names of those four files.  Now, the exit status of
a for loop is the exit status of the last command executed in the
loop, meaning that the test can't simply rely on the exit code of
'test_cmp' in the loop's body.  Instead, the test works it around by
relying on the stdout of 'test_cmp' being silent on success and
showing the diff on failure, as it appends the stdout of all four
'test_cmp' invocations to a single file and checks that file's
emptiness after the loop (with 'test -z "$(cat ...)"', no less; there
was no 'test_must_be_empty' back then).  Furthermore, the test
redirects the stderr of those 'test_cmp' invocations to this file,
too: while 'test_cmp' itself doesn't output anything to stderr, the
invoked 'diff' or 'cmp' commands do send their error messages there,
e.g. if they can't open a file because its name was misspelled.

This also makes this test fail when the test script is run with '-x'
tracing (and using a shell other than a Bash version supporting
BASH_XTRACEFD), because 'test_cmp's stderr contains the trace of the
'diff' command executed inside the helper function, throwing off the
subsequent emptiness check.

Stop relying on 'test_cmp's output and instead run 'test_cmp a b ||
return 1' in the for loop in order to make 'test_cmp's error code fail
the test.  Furthermore, add the missing && after the cvs command to
create a && chain in the loop's body.

After this change t9400 passes with '-x', even when running with
/bin/sh.

Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-08 15:37:07 -08:00
Junio C Hamano
d0db9edba0 Eighth batch for 2.17
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-08 12:59:17 -08:00