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Code cleanup.
* en/merge-recursive-oid-eq-simplify:
merge-recursive: remove unnecessary oid_eq function
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"git sparse-checkout list" subcommand learned to give its output in
a more concise form when the "cone" mode is in effect.
* ds/sparse-list-in-cone-mode:
sparse-checkout: document interactions with submodules
sparse-checkout: list directories in cone mode
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An earlier update to Git for Windows declared that a tree object is
invalid if it has a path component with backslash in it, which was
overly strict, which has been corrected. The only protection the
Windows users need is to prevent such path (or any path that their
filesystem cannot check out) from entering the index.
* js/mingw-loosen-overstrict-tree-entry-checks:
mingw: only test index entries for backslashes, not tree entries
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Doc update.
* pb/clarify-line-log-doc:
doc: log, gitk: line-log arguments must exist in starting revision
doc: log, gitk: document accepted line-log diff formats
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Code cleanup.
* ew/packfile-syscall-optim:
packfile: replace lseek+read with pread
packfile: remove redundant fcntl F_GETFD/F_SETFD
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During a clone of a repository that contained a file with a backslash in
its name in the past, as of v2.24.1(2), Git for Windows prints errors
like this:
error: filename in tree entry contains backslash: '\'
The idea is to prevent Git from even trying to write files with
backslashes in their file names: while these characters are valid in
file names on other platforms, on Windows it is interpreted as directory
separator (which would obviously lead to ambiguities, e.g. when there is
a file `a\b` and there is also a file `a/b`).
Arguably, this is the wrong layer for that error: As long as the user
never checks out the files whose names contain backslashes, there should
not be any problem in the first place.
So let's loosen the requirements: we now leave tree entries with
backslashes in their file names alone, but we do require any entries
that are added to the Git index to contain no backslashes on Windows.
Note: just as before, the check is guarded by `core.protectNTFS` (to
allow overriding the check by toggling that config setting), and it
is _only_ performed on Windows, as the backslash is not a directory
separator elsewhere, even when writing to NTFS-formatted volumes.
An alternative approach would be to try to prevent creating files with
backslashes in their file names. However, that comes with its own set of
problems. For example, `git config -f C:\ProgramData\Git\config ...` is
a very valid way to specify a custom config location, and we obviously
do _not_ want to prevent that. Therefore, the approach chosen in this
patch would appear to be better.
This addresses https://github.com/git-for-windows/git/issues/2435
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
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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Test fix.
* js/use-test-tool-on-path:
t3008: find test-tool through path lookup
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Forbid pathnames that the platform's filesystem cannot represent on
MinGW.
* js/mingw-reserved-filenames:
mingw: refuse paths containing reserved names
mingw: short-circuit the conversion of `/dev/null` to UTF-16
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"git rebase --signoff" stopped working when the command was written
in C, which has been corrected.
* en/rebase-signoff-fix:
rebase: fix saving of --signoff state for am-based rebases
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* em/freebsd-cirrus-ci:
CI: add FreeBSD CI support via Cirrus-CI
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Miscellaneous small UX improvements on "git-p4".
* bk/p4-misc-usability:
git-p4: show detailed help when parsing options fail
git-p4: yes/no prompts should sanitize user text
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Back when merge-recursive was first introduced in commit 6d297f8137
(Status update on merge-recursive in C, 2006-07-08), it created a
sha_eq() function. This function pre-dated the introduction of
hashcmp() to cache.h by about a month, but was switched over to using
hashcmp() as part of commit 9047ebbc22 (Split out merge_recursive() to
merge-recursive.c, 2008-08-12). In commit b4da9d62f9 (merge-recursive:
convert leaf functions to use struct object_id, 2016-06-24), sha_eq() was
renamed to oid_eq() and its hashcmp() call was switched to oideq().
oid_eq() is basically just a wrapper around oideq() that has some extra
checks to protect against NULL arguments or to allow short-circuiting if
one of the arguments is NULL. I don't know if any caller ever tried to
call with NULL arguments, but certainly none do now which means the
extra checks serve no purpose. (Also, if these checks were genuinely
useful, then they probably should be added to the main oideq() so all
callers could benefit from them.)
Reduce the cognitive overhead of having both oid_eq() and oideq(), by
getting rid of merge-recursive's special oid_eq() wrapper.
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Using 'git submodule (init|deinit)' a user can select a subset of
submodules to populate. This behaves very similar to the sparse-checkout
feature, but those directories contain their own .git directory
including an object database and ref space. To have the sparse-checkout
file also determine if those files should exist would easily cause
problems. Therefore, keeping these features independent in this way
is the best way forward.
Also create a test that demonstrates this behavior to make sure
it doesn't change as the sparse-checkout feature evolves.
Reported-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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When core.sparseCheckoutCone is enabled, the 'git sparse-checkout set'
command takes a list of directories as input, then creates an ordered
list of sparse-checkout patterns such that those directories are
recursively included and all sibling entries along the parent directories
are also included. Listing the patterns is less user-friendly than the
directories themselves.
In cone mode, and as long as the patterns match the expected cone-mode
pattern types, change the output of 'git sparse-checkout list' to only
show the directories that created the patterns.
With this change, the following piped commands would not change the
working directory:
git sparse-checkout list | git sparse-checkout set --stdin
The only time this would not work is if core.sparseCheckoutCone is
true, but the sparse-checkout file contains patterns that do not
match the expected pattern types for cone mode.
Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Do not use $GIT_BUILD_DIR without quotes; it may contain spaces and be
split into fields. But it is not necessary to access test-tool with an
absolute path in the first place as it can be found via path lookup.
Remove the explicit path.
Signed-off-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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We already have pread emulation for portability, so there's
there's no reason to make two syscalls where one suffices.
Furthermore, readers of the packfile will be using mmap
(or pread to emulate mmap), anyways, so the file description
offset does not matter in this case.
Signed-off-by: Eric Wong <e@80x24.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The line number, regex or offset parameters <start> and <end> in
`git log -L <start>,<end>:<file>`, or the function name regex in
`git log -L :<funcname>:<file>` must exist in the starting
revision, or else the command exits with a fatal error.
This is not obvious in the documentation, so add a note to that
effect.
Signed-off-by: Philippe Blain <levraiphilippeblain@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Currently the line-log functionality (git log -L) only supports
displaying patch output (`-p | --patch`, its default behavior) and suppressing it
(`-s | --no-patch`). A check was added in the code to that effect in 5314efaea
(line-log: detect unsupported formats, 2019-03-10) but the documentation was not
updated.
Explicitly mention that `-L` implies `-p`, that patch output can be
suppressed using `-s`, and that all other diff formats are not allowed.
Signed-off-by: Philippe Blain <levraiphilippeblain@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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git_open sets close-on-exec since cd66ada06588f797
("sha1_file: open window into packfiles with O_CLOEXEC").
There's no reason to keep using fcntl to set the close-on-exec
flag, anymore.
Signed-off-by: Eric Wong <e@80x24.org>
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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Assorted fixes to the directory traversal API.
* en/fill-directory-fixes:
dir.c: use st_add3() for allocation size
dir: consolidate similar code in treat_directory()
dir: synchronize treat_leading_path() and read_directory_recursive()
dir: fix checks on common prefix directory
dir: break part of read_directory_recursive() out for reuse
dir: exit before wildcard fall-through if there is no wildcard
dir: remove stray quote character in comment
Revert "dir.c: make 'git-status --ignored' work within leading directories"
t3011: demonstrate directory traversal failures
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Test cleanup.
* rs/test-cleanup:
t6030: don't create unused file
t5580: don't create unused file
t3501: don't create unused file
t7004: don't create unused file
t4256: don't create unused file
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Code cleanup.
* mr/bisect-save-pointer-to-const-string:
bisect--helper: convert `*_warning` char pointers to char arrays.
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Extend test coverage for a recent fix.
* rs/xdiff-ignore-ws-w-func-context:
t4015: improve coverage of function context test
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The effort to move "git-add--interactive" to C continues.
* js/add-p-in-c:
built-in add -p: show helpful hint when nothing can be staged
built-in add -p: only show the applicable parts of the help text
built-in add -p: implement the 'q' ("quit") command
built-in add -p: implement the '/' ("search regex") command
built-in add -p: implement the 'g' ("goto") command
built-in add -p: implement hunk editing
strbuf: add a helper function to call the editor "on an strbuf"
built-in add -p: coalesce hunks after splitting them
built-in add -p: implement the hunk splitting feature
built-in add -p: show different prompts for mode changes and deletions
built-in app -p: allow selecting a mode change as a "hunk"
built-in add -p: handle deleted empty files
built-in add -p: support multi-file diffs
built-in add -p: offer a helpful error message when hunk navigation failed
built-in add -p: color the prompt and the help text
built-in add -p: adjust hunk headers as needed
built-in add -p: show colored hunks by default
built-in add -i: wire up the new C code for the `patch` command
built-in add -i: start implementing the `patch` functionality in C
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Code cleanup.
* jc/drop-gen-hdrs:
Makefile: drop GEN_HDRS
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Doc cleanup.
* ja/doc-markup-cleanup:
doc: indent multi-line items in list
doc: remove non pure ASCII characters
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Code cleanup.
* rs/ref-read-cleanup:
remote: pass NULL to read_ref_full() because object ID is not needed
refs: pass NULL to refs_read_ref_full() because object ID is not needed
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"git p4" used to ignore lfs.storage configuration variable, which
has been corrected.
* rb/p4-lfs:
git-p4: honor lfs.storage configuration variable
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Doc update.
* pb/submodule-doc-xref:
gitmodules: link to gitsubmodules guide
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Use-after-free fix.
* mr/bisect-use-after-free:
bisect--helper: avoid use-after-free
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Hotfix.
* ln/userdiff-elixir:
userdiff: remove empty subexpression from elixir regex
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Management of sparsely checked-out working tree has gained a
dedicated "sparse-checkout" command.
* ds/sparse-cone: (21 commits)
sparse-checkout: improve OS ls compatibility
sparse-checkout: respect core.ignoreCase in cone mode
sparse-checkout: check for dirty status
sparse-checkout: update working directory in-process for 'init'
sparse-checkout: cone mode should not interact with .gitignore
sparse-checkout: write using lockfile
sparse-checkout: use in-process update for disable subcommand
sparse-checkout: update working directory in-process
sparse-checkout: sanitize for nested folders
unpack-trees: add progress to clear_ce_flags()
unpack-trees: hash less in cone mode
sparse-checkout: init and set in cone mode
sparse-checkout: use hashmaps for cone patterns
sparse-checkout: add 'cone' mode
trace2: add region in clear_ce_flags
sparse-checkout: create 'disable' subcommand
sparse-checkout: add '--stdin' option to set subcommand
sparse-checkout: 'set' subcommand
clone: add --sparse mode
sparse-checkout: create 'init' subcommand
...
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Redo "git name-rev" to avoid recursive calls.
* sg/name-rev-wo-recursion:
name-rev: cleanup name_ref()
name-rev: eliminate recursion in name_rev()
name-rev: use 'name->tip_name' instead of 'tip_name'
name-rev: drop name_rev()'s 'generation' and 'distance' parameters
name-rev: restructure creating/updating 'struct rev_name' instances
name-rev: restructure parsing commits and applying date cutoff
name-rev: pull out deref handling from the recursion
name-rev: extract creating/updating a 'struct name_rev' into a helper
t6120: add a test to cover inner conditions in 'git name-rev's name_rev()
name-rev: use sizeof(*ptr) instead of sizeof(type) in allocation
name-rev: avoid unnecessary cast in name_ref()
name-rev: use strbuf_strip_suffix() in get_rev_name()
t6120-describe: modernize the 'check_describe' helper
t6120-describe: correct test repo history graph in comment
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Some Porcelain commands are written in Perl, and tests on them are
expected not to work when the platform lacks a working perl.
* ra/t5150-depends-on-perl:
t5150: skip request-pull test if Perl is disabled
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"git format-patch" can take a set of configured format.notes values
to specify which notes refs to use in the log message part of the
output. The behaviour of this was not consistent with multiple
--notes command line options, which has been corrected.
* dl/format-patch-notes-config-fixup:
notes.h: fix typos in comment
notes: break set_display_notes() into smaller functions
config/format.txt: clarify behavior of multiple format.notes
format-patch: move git_config() before repo_init_revisions()
format-patch: use --notes behavior for format.notes
notes: extract logic into set_display_notes()
notes: create init_display_notes() helper
notes: rename to load_display_notes()
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A few more commands learned the "--pathspec-from-file" command line
option.
* am/pathspec-f-f-checkout:
checkout, restore: support the --pathspec-from-file option
doc: restore: synchronize <pathspec> description
doc: checkout: synchronize <pathspec> description
doc: checkout: fix broken text reference
doc: checkout: remove duplicate synopsis
add: support the --pathspec-from-file option
cmd_add: prepare for next patch
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An earlier series to teach "--pathspec-from-file" to "git commit"
forgot to make the option incompatible with "--all", which has been
corrected.
* am/pathspec-from-file:
commit: forbid --pathspec-from-file --all
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There are a couple of reserved names that cannot be file names on
Windows, such as `AUX`, `NUL`, etc. For an almost complete list, see
https://docs.microsoft.com/en-us/windows/win32/fileio/naming-a-file
If one would try to create a directory named `NUL`, it would actually
"succeed", i.e. the call would return success, but nothing would be
created.
Worse, even adding a file extension to the reserved name does not make
it a valid file name. To understand the rationale behind that behavior,
see https://devblogs.microsoft.com/oldnewthing/20031022-00/?p=42073
Let's just disallow them all.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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In the next commit, we want to disallow accessing any path that contains
any segment that is equivalent to `NUL`. In particular, we want to
disallow accessing `NUL` (e.g. to prevent any repository from being
checked out that contains a file called `NUL`, as that is not a valid
file name on Windows).
However, there are legitimate use cases within Git itself to write to
the Null device. As Git is really a Linux project, it does not abstract
that idea, though, but instead uses `/dev/null` to describe this
intention.
So let's side-step the validation _specifically_ in the case that we
want to write to (or read from) `/dev/null`, via a dedicated short-cut
in the code that skips the call to `validate_win32_path()`.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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On FreeBSD, when executed by root ls enables the '-A' option:
-A Include directory entries whose names begin with a dot (`.')
except for . and ... Automatically set for the super-user unless
-I is specified.
As a result the .git directory appeared in the output when run as root.
Simulate no-dotfile ls behaviour using a shell glob.
Helped-by: Eric Wong <e@80x24.org>
Helped-by: Junio C Hamano <gitster@pobox.com>
Helped-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Ed Maste <emaste@FreeBSD.org>
Acked-by: Derrick Stolee <dstolee@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Currently testing on FreeBSD 12.1.
Signed-off-by: Ed Maste <emaste@FreeBSD.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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This was an error introduced in the conversion from shell in commit
21853626eac5 ("built-in rebase: call `git am` directly", 2019-01-18),
which was noticed by a random browsing of the code.
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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When preparing a manufactured dirent instance, we add a length of
path to the size of struct to decide how many bytes to allocate.
Make sure this addition does not wrap-around to cause us
underallocate.
Suggested-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Both the DIR_SKIP_NESTED_GIT and DIR_NO_GITLINKS cases were checking for
whether a path was actually a nonbare repository. That code could be
shared, with just the result of how to act differing between the two
cases.
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Our optimization to avoid calling into read_directory_recursive() when
all pathspecs have a common leading directory mean that we need to match
the logic that read_directory_recursive() would use if we had just
called it from the root. Since it does more than call treat_path() we
need to copy that same logic.
Alternatively, we could try to change treat_path to return path_recurse
for an untracked directory under the given special circumstances that
this logic checks for, but a simple switch results in many test failures
such as 'git clean -d' not wiping out untracked but empty directories.
To work around that, we'd need the caller of treat_path to check for
path_recurse and sometimes special case it into path_untracked. In
other words, we'd still have extra logic in both places.
Needing to duplicate logic like this means it is guaranteed someone will
eventually need to make further changes and forget to update both
locations. It is tempting to just nuke the leading_directory special
casing to avoid such bugs and simplify the code, but unpack_trees'
verify_clean_subdirectory() also calls read_directory() and does so with
a non-empty leading path, so I'm hesitant to try to restructure further.
Add obnoxious warnings to treat_leading_path() and
read_directory_recursive() to try to warn people of such problems.
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Many years ago, the directory traversing logic had an optimization that
would always recurse into any directory that was a common prefix of all
the pathspecs without walking the leading directories to get down to
the desired directory. Thus,
git ls-files -o .git/ # case A
would notice that .git/ was a common prefix of all pathspecs (since
it is the only pathspec listed), and then traverse into it and start
showing unknown files under that directory. Unfortunately, .git/ is not
a directory we should be traversing into, which made this optimization
problematic. This also affected cases like
git ls-files -o --exclude-standard t/ # case B
where t/ was in the .gitignore file and thus isn't interesting and
shouldn't be recursed into. It also affected cases like
git ls-files -o --directory untracked_dir/ # case C
where untracked_dir/ is indeed untracked and thus interesting, but the
--directory flag means we only want to show the directory itself, not
recurse into it and start listing untracked files below it.
The case B class of bugs were noted and fixed in commits 16e2cfa90993
("read_directory(): further split treat_path()", 2010-01-08) and
48ffef966c76 ("ls-files: fix overeager pathspec optimization",
2010-01-08), with the idea being that we first wanted to check whether
the common prefix was interesting. The former patch noted that
treat_path() couldn't be used when checking the common prefix because
treat_path() requires a dir_entry() and we haven't read any directories
at the point we are checking the common prefix. So, that patch split
treat_one_path() out of treat_path(). The latter patch then created a
new treat_leading_path() which duplicated by hand the bits of
treat_path() that couldn't be broken out and then called
treat_one_path() for the remainder. There were three problems with this
approach:
* The duplicated logic in treat_leading_path() accidentally missed the
check for special paths (such as is_dot_or_dotdot and matching
".git"), causing case A types of bugs to continue to be an issue.
* The treat_leading_path() logic assumed we should traverse into
anything where path_treatment was not path_none, i.e. it perpetuated
class C types of bugs.
* It meant we had split logic that needed to kept in sync, running the
risk that people introduced new inconsistencies (such as in commit
be8a84c52669, which we reverted earlier in this series, or in commit
df5bcdf83ae which we'll fix in a subsequent commit)
Fix most these problems by making treat_leading_path() not only loop
over each leading path component, but calling treat_path() directly on
each. To do so, we have to create a synthetic dir_entry, but that only
takes a few lines. Then, pay attention to the path_treatment result we
get from treat_path() and don't treat path_excluded, path_untracked, and
path_recurse all the same as path_recurse.
This leaves one remaining problem, the new inconsistency from commit
df5bcdf83ae. That will be addressed in a subsequent commit.
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Add a test that includes an actual function line in the test file to
check if context is expanded to include the whole function, and add an
ignored change before function context to check if that one stays hidden
while the originally ignored change within function context is shown.
This differs from the existing test, which is concerned with the case
where there is no function line at all in the file (and we might look
past the beginning of the file).
Helped-by: Jeff King <peff@peff.net>
Signed-off-by: René Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Junio C Hamano
Johannes Schindelin
Elijah Newren
Derrick Stolee
Johannes Sixt
Eric Wong
Philippe Blain
Ed Maste
René Scharfe