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For safety, "git worktree add <path>" will refuse to add a new
worktree at <path> if <path> is already associated with a worktree
entry, even if <path> is missing (for instance, has been deleted or
resides on non-mounted removable media or network share). The typical
way to re-create a worktree at <path> in such a situation is either to
prune all "broken" entries ("git worktree prune") or to selectively
remove the worktree entry manually ("git worktree remove <path>").
However, neither of these approaches ("prune" nor "remove") is
especially convenient, and they may be unsuitable for scripting when a
tool merely wants to re-use a worktree if it exists or create it from
scratch if it doesn't (much as a tool might use "mkdir -p" to re-use
or create a directory).
Therefore, teach 'add' to respect --force as a convenient way to
re-use a path already associated with a worktree entry if the path is
non-existent. For a locked worktree, require --force to be specified
twice.
Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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A given path should only ever be associated with a single registered
worktree. This invariant is enforced by refusing to create a new
worktree at a given path if that path already exists. For example:
$ git worktree add -q --detach foo
$ git worktree add -q --detach foo
fatal: 'foo' already exists
However, the check can be fooled, and the invariant broken, if the
path is missing. Continuing the example:
$ rm -fr foo
$ git worktree add -q --detach foo
$ git worktree list
... eadebfe [master]
.../foo eadebfe (detached HEAD)
.../foo eadebfe (detached HEAD)
This "corruption" leads to the unfortunate situation in which the
worktree can not be removed:
$ git worktree remove foo
fatal: validation failed, cannot remove working tree: '.../foo'
does not point back to '.git/worktrees/foo'
Nor can the bogus entry be pruned:
$ git worktree prune -v
$ git worktree list
... eadebfe [master]
.../foo eadebfe (detached HEAD)
.../foo eadebfe (detached HEAD)
without first deleting the worktree directory manually:
$ rm -fr foo
$ git worktree prune -v
Removing .../foo: gitdir file points to non-existent location
Removing .../foo1: gitdir file points to non-existent location
$ git worktree list
... eadebfe [master]
or by manually deleting the worktree entry in .git/worktrees.
To address this problem, upgrade "git worktree add" validation to
allow worktree creation only if the given path is not already
associated with an existing worktree (even if the path itself is
non-existent), thus preventing such bogus worktree entries from being
created in the first place.
Reported-by: Jeff King <peff@peff.net>
Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Certain conditions must be met for a path to be a valid candidate as the
location of a new worktree; for instance, the path must not exist or
must be an empty directory. Although the number of conditions is small,
new conditions will soon be added so factor out the existing checks into
a separate function to avoid further bloating add_worktree().
Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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prune_worktrees() and delete_git_dir() both remove worktree
administrative entries from .git/worktrees, and their implementations
are nearly identical. The only difference is that prune_worktrees() is
also capable of removing a bogus non-worktree-related file from
.git/worktrees.
Simplify by extending delete_git_dir() to handle the little bit of
extra functionality needed by prune_worktrees(), and drop the
effectively duplicate code from the latter.
Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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This is a pure code movement to avoid having to forward-declare the
function when new callers are subsequently added.
Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Callers don't expect library function find_worktree() to die(); they
expect it to return the named worktree if found, or NULL if not.
Although find_worktree() itself never invokes die(), it calls
real_pathdup() with 'die_on_error' incorrectly set to 'true', thus will
die() indirectly if the user-provided path is not to real_pathdup()'s
liking. This can be observed, for instance, with any git-worktree
command which searches for an existing worktree:
$ git worktree unlock foo
fatal: 'foo' is not a working tree
$ git worktree unlock foo/bar
fatal: Invalid path '.../foo': No such file or directory
The first error message is the expected one from "git worktree unlock"
not finding the specified worktree; the second is from find_worktree()
invoking real_pathdup() incorrectly and die()ing prematurely.
Aside from the inconsistent error message between the two cases, this
bug hasn't otherwise been a serious problem since existing callers all
die() anyhow when the worktree can't be found. However, that may not be
true of callers added in the future, so fix find_worktree() to avoid
die()ing.
Signed-off-by: Eric Sunshine <sunshine@sunshineco.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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Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Messages fix.
* ja/i18n-message-fixes:
i18n: fix mistakes in translated strings
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Finishing touches to doc.
* ds/commit-graph-fsck:
config: fix commit-graph related config docs
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Finishing touched to help string.
* js/range-diff:
range-diff: update stale summary of --no-dual-color
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Test fix.
* sg/test-rebase-editor-fix:
t/lib-rebase.sh: support explicit 'pick' commands in 'fake_editor.sh'
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Partially revert the support for multiple hash functions to regain
hash comparison performance; we'd think of a way to do this better
in the next cycle.
* jk/hashcmp-optim-for-2.19:
hashcmp: assert constant hash size
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Test fixes.
* ab/test-must-be-empty-for-master:
t6018-rev-list-glob: fix 'empty stdin' test
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Test fixes.
* sg/t3420-autostash-fix:
t3420-rebase-autostash: don't try to grep non-existing files
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Test fixes.
* sg/t3903-missing-fix:
t3903-stash: don't try to grep non-existing file
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Test fixes.
* sg/t7501-thinkofix:
t7501-commit: drop silly command substitution
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Test fixes.
* sg/t0020-conversion-fix:
t0020-crlf: check the right file
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Test fixes.
* sg/t4051-fix:
t4051-diff-function-context: read the right file
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Portability fix.
* js/larger-timestamps:
commit: use timestamp_t for author_date_slab
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Dev tool update.
* jk/use-compat-util-in-test-tool:
test-tool.h: include git-compat-util.h
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Test fixes.
* sg/test-must-be-empty:
tests: use 'test_must_be_empty' instead of 'test_cmp <empty> <out>'
tests: use 'test_must_be_empty' instead of 'test_cmp /dev/null <out>'
tests: use 'test_must_be_empty' instead of 'test ! -s'
tests: use 'test_must_be_empty' instead of '! test -s'
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"git cmd -h" updates.
* rs/opt-updates:
parseopt: group literal string alternatives in argument help
remote: improve argument help for add --mirror
checkout-index: improve argument help for --stage
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"git help --config" (which is used in command line completion)
missed the configuration variables not described in the main
config.txt file but are described in another file that is included
by it, which has been corrected.
* nd/complete-config-vars:
generate-cmdlist.sh: collect config from all config.txt files
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Code clean-up.
* ab/unconditional-free-and-null:
refactor various if (x) FREE_AND_NULL(x) to just FREE_AND_NULL(x)
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"git worktree" command learned "--quiet" option to make it less
verbose.
* ep/worktree-quiet-option:
worktree: add --quiet option
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"git branch --list" learned to take the default sort order from the
'branch.sort' configuration variable, just like "git tag --list"
pays attention to 'tag.sort'.
* sm/branch-sort-config:
branch: support configuring --sort via .gitconfig
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The meaning of the possible values the "core.checkStat"
configuration variable can take were not adequately documented,
which has been fixed.
* nd/config-core-checkstat-doc:
config.txt: clarify core.checkStat
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275267937b (range-diff: make dual-color the default mode, 2018-08-13)
replaced --dual-color with --no-dual-color but left the option's
summary untouched. Rewrite the summary to describe --no-dual-color
rather than dual-color.
Helped-by: Jonathan Nieder <jrnieder@gmail.com>
Helped-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Signed-off-by: Kyle Meyer <kyle@kyleam.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Fix typos and convert a question which does not expect to be replied
to a simple advice.
Signed-off-by: Jean-Noël Avila <jn.avila@free.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The core.commitGraph config setting was accidentally removed from
the config documentation. In that same patch, the config setting
that writes a commit-graph during garbage collection was incorrectly
written to the doc as "gc.commitGraph" instead of "gc.writeCommitGraph".
Reported-by: Szeder Gábor <szeder.dev@gmail.com>
Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The verbose output of the test 'reword without issues functions as
intended' in 't3423-rebase-reword.sh', added in a9279c6785 (sequencer:
do not squash 'reword' commits when we hit conflicts, 2018-06-19),
contains the following error output:
sed: -e expression #1, char 2: extra characters after command
This error comes from within the 'fake-editor.sh' script created by
'lib-rebase.sh's set_fake_editor() function, and the root cause is the
FAKE_LINES="pick 1 reword 2" variable in the test in question, in
particular the "pick" word. 'fake-editor.sh' assumes 'pick' to be the
default rebase command and doesn't support an explicit 'pick' command
in FAKE_LINES. As a result, 'pick' will be used instead of a line
number when assembling the following 'sed' script:
sed -n picks/^pick/pick/p
which triggers the aforementioned error.
Luckily, this didn't affect the test's correctness: the erroring 'sed'
command doesn't write anything to the todo script, and processing the
rest of FAKE_LINES generates the desired todo script, as if that
'pick' command were not there at all.
The minimal fix would be to remove the 'pick' word from FAKE_LINES,
but that would leave us susceptible to similar issues in the future.
Instead, teach the fake-editor script to recognize an explicit 'pick'
command, which is still a fairly trivial change.
In the future we might want to consider reinforcing this fake editor
script with an &&-chain and stricter parsing of the FAKE_LINES
variable (e.g. to error out when encountering unknown rebase commands
or commands and line numbers in the wrong order).
Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Prior to 509f6f62a4 (cache: update object ID functions for
the_hash_algo, 2018-07-16), hashcmp() called memcmp() with a
constant size of 20 bytes. Some compilers were able to turn
that into a few quad-word comparisons, which is faster than
actually calling memcmp().
In 509f6f62a4, we started using the_hash_algo->rawsz
instead. Even though this will always be 20, the compiler
doesn't know that while inlining hashcmp() and ends up just
generating a call to memcmp().
Eventually we'll have to deal with multiple hash sizes, but
for the upcoming v2.19, we can restore some of the original
performance by asserting on the size. That gives the
compiler enough information to know that the memcmp will
always be called with a length of 20, and it performs the
same optimization.
Here are numbers for p0001.2 run against linux.git on a few
versions. This is using -O2 with gcc 8.2.0.
Test v2.18.0 v2.19.0-rc0 HEAD
------------------------------------------------------------------------------
0001.2: 34.24(33.81+0.43) 34.83(34.42+0.40) +1.7% 33.90(33.47+0.42) -1.0%
You can see that v2.19 is a little slower than v2.18. This
commit ended up slightly faster than v2.18, but there's a
fair bit of run-to-run noise (the generated code in the two
cases is basically the same). This patch does seem to be
consistently 1-2% faster than v2.19.
I tried changing hashcpy(), which was also touched by
509f6f62a4, in the same way, but couldn't measure any
speedup. Which makes sense, at least for this workload. A
traversal of the whole commit graph requires looking up
every entry of every tree via lookup_object(). That's many
multiples of the numbers of objects in the repository (most
of the lookups just return "yes, we already saw that
object").
[jn: verified using "make object.s" that the memcmp call goes away.]
Reported-by: Derrick Stolee <stolee@gmail.com>
Signed-off-by: Jeff King <peff@peff.net
Reviewed-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Several tests in 't3420-rebase-autostash.sh' start various rebase
processes that are expected to fail because of merge conflicts. These
tests then run '! grep' to ensure that the autostash feature did its
job, and the dirty contents of a file is gone. However, due to the
test repo's history and the choice of upstream branch that file
shouldn't exist in the conflicted state at all. Consequently, this
'grep' doesn't fail as expected, because it can't find the dirty
content, but it fails because it can't open the file.
Tighten this check by using 'test_path_is_missing' instead, thereby
avoiding unexpected errors from 'grep' as well.
Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The test 'store updates stash ref and reflog' in 't3903-stash.sh'
creates a stash from a new file, runs 'git reset --hard' to throw away
any modifications to the work tree, and then runs '! grep' to ensure
that the staged contents are gone. Since the file didn't exist
before, it shouldn't exist after 'git reset' either. Consequently,
this 'grep' doesn't fail as expected, because it can't find the staged
content, but it fails because it can't open the file.
Tighten this check by using 'test_path_is_missing' instead, thereby
avoiding an unexpected error from 'grep' as well.
Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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In a recent update in 2.18 era, "git pack-objects" started
producing a larger than necessary packfiles by missing
opportunities to use large deltas.
* nd/pack-deltify-regression-fix:
pack-objects: fix performance issues on packing large deltas
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Prior to d3c6751b18 (tests: make use of the test_must_be_empty
function, 2018-07-27), in the test 'rev-list should succeed with empty
output on empty stdin' in 't6018-rev-list-glob' the empty 'expect'
file served dual purpose: besides specifying the expected output, as
usual, it also served as empty input for 'git rev-list --stdin'.
Then d3c6751b18 came along, and, as part of the conversion to
'test_must_be_empty', removed this empty 'expect' file, not realizing
its secondary purpose. Redirecting stdin from the now non-existing
file failed the test, but since this test expects failure in the first
place, this issue went unnoticed.
Redirect 'git rev-list's stdin explicitly from /dev/null to provide
empty input. (Strictly speaking we don't need this redirection,
because the test script's stdin is already redirected from /dev/null
anyway, but I think it's better to be explicit about it.)
Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The test ' context does not include preceding empty lines' in the
block of tests 'change with long common tail and no context' in
't4051-diff-function-context.sh' tries to read the file
'long_common_tail.diff.diff', but that file doesn't exist as its name
contains one more '.diff' suffixes than necessary.
Despite this error the test still succeeded without checking what it's
supposed to, because this erroneous read is done on the line:
test "$(first_context_line <long_common_tail.diff.diff)" != " "
which means that:
- the command substitution hides the error, so it won't fail the
test, and
- the result of the command substitution is the empty string, which
is, of course, not equal to a single space character, so the
condition is fulfilled, and the test succeeds.
As a minimal fix, fix the name of the file to be read.
In the future we might want to reorganize this test script (1) to use
'test_cmp' instead of 'test's and command substitutions to catch
failing commands and to provide helpful error messages, and (2) to
specify what the expected result actually _is_ instead of what it
isn't.
Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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In the test 'checkout with autocrlf=input' in 't0020-crlf.sh', one of
the 'has_cr' checks looks at the non-existing file 'two' instead of
'dir/two'. The test still succeeds, without actually checking what it
was supposed to, because this check is expected to fail anyway.
As a minimal fix, fix the name of the file to be checked.
Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The test '--dry-run with conflicts fixed from a merge' in
't7501-commit.sh', added in 8dc874b2ee (wt-status.c: set commitable
bit if there is a meaningful merge., 2016-02-15), runs the following
unnecessary and downright bogus command substitution:
! $(git merge --no-commit commit-1) &&
I.e. after 'git merge ...' is executed and expectedly fails, the test
attempts to execute its output:
Merging:
80f2ea2 commit 2
virtual commit-1
found 1 common ancestor:
e60d113 Initial commit
Auto-merging test-file
CONFLICT (content): Merge conflict in test-file
Automatic merge failed; fix conflicts and then commit the result.
as a command, which most likely fails, because there is no such
command as "Merging:". Then '!' negates the failed exit status, the
test continues, and eventually succeeds.
Remove this command substitution and use 'test_must_fail' to ensure
that 'git merge' fails.
Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The author_date_slab is used to store the author date of a commit
when walking with the --author-date flag in rev-list or log. This
was added as an 'unsigned long' in
81c6b38b "log: --author-date-order"
Since 'unsigned long' is ambiguous in its bit-ness across platforms
(64-bit in Linux, 32-bit in Windows, for example), most references
to the author dates in commit.c were converted to timestamp_t in
dddbad72 "timestamp_t: a new data type for timestamps"
However, the slab definition was missed, leading to a mismatch in
the data types in Windows. This would not reveal itself as a bug
unless someone authors a commit after February 2106, but commits
can store anything as their author date.
Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The test-tool programs include "test-tool.h" as their first
include, which breaks our CodingGuideline of "the first
include must be git-compat-util.h or an equivalent".
Rather than change them all, let's instead make test-tool.h
one of those equivalents, just like we do for builtin.h
(which many of the actual git builtins include first).
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Using 'test_must_be_empty' is shorter and more idiomatic than
>empty &&
test_cmp empty out
as it saves the creation of an empty file. Furthermore, sometimes the
expected empty file doesn't have such a descriptive name like 'empty',
and its creation is far away from the place where it's finally used
for comparison (e.g. in 't7600-merge.sh', where two expected empty
files are created in the 'setup' test, but are used only about 500
lines later).
These cases were found by instrumenting 'test_cmp' to error out the
test script when it's used to compare empty files, and then converted
manually.
Note that even after this patch there still remain a lot of cases
where we use 'test_cmp' to check empty files:
- Sometimes the expected output is not hard-coded in the test, but
'test_cmp' is used to ensure that two similar git commands produce
the same output, and that output happens to be empty, e.g. the
test 'submodule update --merge - ignores --merge for new
submodules' in 't7406-submodule-update.sh'.
- Repetitive common tasks, including preparing the expected results
and running 'test_cmp', are often extracted into a helper
function, and some of this helper's callsites expect no output.
- For the same reason as above, the whole 'test_expect_success'
block is within a helper function, e.g. in 't3070-wildmatch.sh'.
- Or 'test_cmp' is invoked in a loop, e.g. the test 'cvs update
(-p)' in 't9400-git-cvsserver-server.sh'.
Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Using 'test_must_be_empty' is more idiomatic than 'test_cmp /dev/null
out', and its message on error is perhaps a bit more to the point.
This patch was basically created by running:
sed -i -e 's%test_cmp /dev/null%test_must_be_empty%' t[0-9]*.sh
with the exception of the change in 'should not fail in an empty repo'
in 't7401-submodule-summary.sh', where it was 'test_cmp output
/dev/null'.
Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Using 'test_must_be_empty' is preferable to 'test ! -s', because it
gives a helpful error message if the given file is unexpectedly no
empty, while the latter remains completely silent. Furthermore, it
also catches cases when the given file unexpectedly does not exist at
all.
This patch was created by:
sed -i -e 's/test ! -s/test_must_be_empty/' t[0-9]*.sh
Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Using 'test_must_be_empty' is preferable to '! test -s', because it
gives a helpful error message if the given file is unexpectedly not
empty, while the latter remains completely silent. Furthermore, it
also catches cases when the given file unexpectedly does not exist at
all.
This patch was basically created by:
sed -i -e 's/! test -s/test_must_be_empty/' t[0-9]*.sh
with the following notable exceptions:
- The '! test -s' check in '.gitmodules ignore=dirty suppresses
submodules with untracked content' in 't7508-status.sh' is left
as-is, because it's bogus and, therefore, it's subject of a
dedicated patch.
- The '! test -s' checks in 't9131-git-svn-empty-symlink.sh' and
't9135-git-svn-moved-branch-empty-file.sh' are immediately
preceeded by a 'test -f' to ensure that the files exist in the
first place. 'test_must_be_empty' ensures that as well, so those
'test -f' commands are removed as well.
Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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This formally clarifies that the "--option=" part is the same for all
alternatives.
Signed-off-by: Rene Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Group the possible values using a pair of parentheses and don't mark
them for translation, as they are literal strings that have to be used
as-is in any locale.
Signed-off-by: Rene Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Spell out all alternatives and avoid using a numerical range operator,
as it is not mentioned in CodingGuidelines and the resulting string is
still concise. Wrap them in parentheses to document clearly that the
"--stage=" part is common among them.
Signed-off-by: Rene Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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This script uses Documentation/config.txt as input for "git help
--config" and "git config" completion but it misses the fact that
config.txt includes other txt files. Include all *config.txt as input
when scanning for config keys. This could produce false positives, but
as long as we stick to the blah-config.txt naming convention, we
should be ok.
While at there, move diff.* from config.txt to diff-config.txt where
all other diff config keys are.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Eric Sunshine
Junio C Hamano
Kyle Meyer
Jean-Noël Avila
Derrick Stolee
SZEDER Gábor
Jeff King
René Scharfe
Nguyễn Thái Ngọc Duy