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The merge-recursive machiery is one of the most complex parts of
the system that accumulated cruft over time. This large series
cleans up the implementation quite a bit.
* en/merge-recursive-cleanup: (26 commits)
merge-recursive: fix the fix to the diff3 common ancestor label
merge-recursive: fix the diff3 common ancestor label for virtual commits
merge-recursive: alphabetize include list
merge-recursive: add sanity checks for relevant merge_options
merge-recursive: rename MERGE_RECURSIVE_* to MERGE_VARIANT_*
merge-recursive: split internal fields into a separate struct
merge-recursive: avoid losing output and leaking memory holding that output
merge-recursive: comment and reorder the merge_options fields
merge-recursive: consolidate unnecessary fields in merge_options
merge-recursive: move some definitions around to clean up the header
merge-recursive: rename merge_options argument to opt in header
merge-recursive: rename 'mrtree' to 'result_tree', for clarity
merge-recursive: use common name for ancestors/common/base_list
merge-recursive: fix some overly long lines
cache-tree: share code between functions writing an index as a tree
merge-recursive: don't force external callers to do our logging
merge-recursive: remove useless parameter in merge_trees()
merge-recursive: exit early if index != head
Ensure index matches head before invoking merge machinery, round N
merge-recursive: remove another implicit dependency on the_repository
...
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Code cleanup.
* rs/dedup-includes:
treewide: remove duplicate #include directives
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"git stash" learned to write refreshed index back to disk.
* tg/stash-refresh-index:
stash: make sure to write refreshed cache
merge: use refresh_and_write_cache
factor out refresh_and_write_cache function
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Found with "git grep '^#include ' '*.c' | sort | uniq -d".
Signed-off-by: René Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Getting the lock for the index, refreshing it and then writing it is a
pattern that happens more than once throughout the codebase, and isn't
trivial to get right. Factor out the refresh_and_write_cache function
from builtin/am.c to read-cache.c, so it can be re-used in other
places in a subsequent commit.
Note that we return different error codes for failing to refresh the
cache, and failing to write the index. The current caller only cares
about failing to write the index. However for other callers we're
going to convert in subsequent patches we will need this distinction.
Helped-by: Martin Ågren <martin.agren@gmail.com>
Helped-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Signed-off-by: Thomas Gummerer <t.gummerer@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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We try to parse the "author" line out of a commit buffer. We handle the
case that split_ident_line() doesn't work, but we don't do any error
checking that we found an "author" line in the first place! This would
cause us to segfault on such a corrupt object.
Let's put in an explicit NULL check (we can just die(), which is what a
bogus split would do, too). As a bonus, this silences a warning when
compiling with gcc 9.2.1 using "-flto -O3", which claims that ident_len
may be uninitialized (it would only be if we had a NULL here).
Reported-by: Stephan Beyer <s-beyer@gmx.net>
Helped-by: René Scharfe <l.s.r@web.de>
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Improve code readability by introducing an enum to replace the
not-quite-boolean values taken on by detect_directory_renames.
Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Two new commands "git switch" and "git restore" are introduced to
split "checking out a branch to work on advancing its history" and
"checking out paths out of the index and/or a tree-ish to work on
advancing the current history" out of the single "git checkout"
command.
* nd/switch-and-restore: (46 commits)
completion: disable dwim on "git switch -d"
switch: allow to switch in the middle of bisect
t2027: use test_must_be_empty
Declare both git-switch and git-restore experimental
help: move git-diff and git-reset to different groups
doc: promote "git restore"
user-manual.txt: prefer 'merge --abort' over 'reset --hard'
completion: support restore
t: add tests for restore
restore: support --patch
restore: replace --force with --ignore-unmerged
restore: default to --source=HEAD when only --staged is specified
restore: reject invalid combinations with --staged
restore: add --worktree and --staged
checkout: factor out worktree checkout code
restore: disable overlay mode by default
restore: make pathspec mandatory
restore: take tree-ish from --source option instead
checkout: split part of it to new command 'restore'
doc: promote "git switch"
...
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The commit-graph file is now part of the "files that the runtime
may keep open file descriptors on, all of which would need to be
closed when done with the object store", and the file descriptor to
an existing commit-graph file now is closed before "gc" finalizes a
new instance to replace it.
* ds/close-object-store:
packfile: rename close_all_packs to close_object_store
packfile: close commit-graph in close_all_packs
commit-graph: use raw_object_store when closing
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"git am -i --resolved" segfaulted after trying to see a commit as
if it were a tree, which has been corrected.
* jk/am-i-resolved-fix:
am: fix --interactive HEAD tree resolution
am: drop tty requirement for --interactive
am: read interactive input from stdin
am: simplify prompt response handling
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The close_all_packs() method is now responsible for more than just pack-files.
It also closes the commit-graph and the multi-pack-index. Rename the function
to be more descriptive of its larger role. The name also fits because the
input parameter is a raw_object_store.
Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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In --interactive mode, "git am --resolved" will try to generate a patch
based on what is in the index, so that it can prompt "apply this
patch?". To do so it needs the tree of HEAD, which it tries to get with
get_oid_tree(). However, this doesn't yield a tree object; the "tree"
part just means "if you must disambiguate short oids, then prefer trees"
(and we do not need to disambiguate at all, since we are feeding a ref).
Instead, we must parse the oid as a commit (which should always be true
in a non-corrupt repository), and access its tree pointer manually.
This has been broken since the conversion to C in 7ff2683253
(builtin-am: implement -i/--interactive, 2015-08-04), but there was no
test coverage because of interactive-mode's insistence on having a tty.
That was lifted in the previous commit, so we can now add a test for
this case.
Note that before this patch, the test would result in a BUG() which
comes from 3506dc9445 (has_uncommitted_changes(): fall back to empty
tree, 2018-07-11). But before that, we'd have simply segfaulted (and in
fact this is the exact type of case the BUG() added there was trying to
catch!).
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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We have required that the stdin of "am --interactive" be a tty since
a1451104ac (git-am: interactive should fail gracefully., 2005-10-12).
However, this isn't strictly necessary, and makes the tool harder to
test (and is unlike all of our other --interactive commands).
The goal of that commit was to make sure that somebody does not do:
git am --interactive <mbox
and cause us to read commands from the mbox. But we can simply check
up front for this case and complain before entering the interactive
loop.
Technically this disallows:
git am --interactive </dev/null
where our lack of patches means we would never prompt for anything, and
so the old code would not notice our lack of tty (and now we'd die
early). But since such a command is totally pointless, it's no loss.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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In the conversion of git-am from shell script to C, we switched to using
git_prompt(). Unlike the original shell command "read reply", this
doesn't read from stdin at all, but rather from /dev/tty.
In most cases this distinction wouldn't matter. We require (as the shell
script did) that stdin is a tty, so they would generally be the same
thing. But one important exception is our test suite: even with
test_terminal, we cannot test "am --interactive" because it insists on
reading from /dev/tty, not the pseudo-tty we've set up in the test
script.
Fixing this clears the way to adding tests in a future patch.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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We'll never see a NULL returned from git_prompt(); if it can't produce
any input for us (e.g., because the terminal got EOF) then it will just
die().
So there's no need for us to handle NULL here. And even if there was, it
doesn't make sense to continue; on a true terminal hangup we'd just loop
infinitely trying to get input that will never come.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Conversion from unsigned char[20] to struct object_id continues.
* bc/hash-transition-16: (35 commits)
gitweb: make hash size independent
Git.pm: make hash size independent
read-cache: read data in a hash-independent way
dir: make untracked cache extension hash size independent
builtin/difftool: use parse_oid_hex
refspec: make hash size independent
archive: convert struct archiver_args to object_id
builtin/get-tar-commit-id: make hash size independent
get-tar-commit-id: parse comment record
hash: add a function to lookup hash algorithm by length
remote-curl: make hash size independent
http: replace sha1_to_hex
http: compute hash of downloaded objects using the_hash_algo
http: replace hard-coded constant with the_hash_algo
http-walker: replace sha1_to_hex
http-push: remove remaining uses of sha1_to_hex
http-backend: allow 64-character hex names
http-push: convert to use the_hash_algo
builtin/pull: make hash-size independent
builtin/am: make hash size independent
...
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Fourth batch to teach the diff machinery to use the parse-options
API.
* nd/diff-parseopt-4:
am: avoid diff_opt_parse()
diff --no-index: use parse_options() instead of diff_opt_parse()
range-diff: use parse_options() instead of diff_opt_parse()
diff.c: allow --no-color-moved-ws
diff-parseopt: convert --color-moved-ws
diff-parseopt: convert --[no-]color-moved
diff-parseopt: convert --inter-hunk-context
diff-parseopt: convert --no-prefix
diff-parseopt: convert --line-prefix
diff-parseopt: convert --[src|dst]-prefix
diff-parseopt: convert --[no-]abbrev
diff-parseopt: convert --diff-filter
diff-parseopt: convert --find-object
diff-parseopt: convert -O
diff-parseopt: convert --pickaxe-all|--pickaxe-regex
diff-parseopt: convert -S|-G
diff-parseopt: convert -l
diff-parseopt: convert -z
diff-parseopt: convert --ita-[in]visible-in-index
diff-parseopt: convert --ws-error-highlight
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After a successful switch, if a merge, cherry-pick or revert is ongoing,
it is canceled. This behavior has been with us from the very early
beginning, soon after git-merge was created but never actually
documented [1]. It may be a good idea to be transparent and tell the
user if some operation is canceled.
I consider this a better way of telling the user than just adding a
sentence or two in git-checkout.txt, which will be mostly ignored
anyway.
PS. Originally I wanted to print more details like
warning: cancelling an in-progress merge from <SHA-1>
which may allow some level of undo if the user wants to. But that seems
a lot more work. Perhaps it can be improved later if people still want
that.
[1] ... and I will try not to argue whether it is a sensible behavior.
There is some more discussion here if people are interested:
CACsJy8Axa5WsLSjiscjnxVK6jQHkfs-gH959=YtUvQkWriAk5w@mail.gmail.com
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Instead of using GIT_SHA1_HEXSZ, switch to using the_hash_algo and
parse_oid_hex to parse the lines involved in rebasing notes.
Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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diff_opt_parse() is a heavy hammer to just set diff filter. But it's
the only way because of the diff_status_letters[] mapping. Add a new
API to set diff filter and use it in git-am. diff_opt_parse()'s only
remaining call site in revision.c will be gone soon and having it here
just because of git-am does not make sense.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The command line completion (in contrib/) has been taught to
complete more subcommand parameters.
* nd/completion-more-parameters:
completion: add more parameter value completion
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A more structured way to obtain execution trace has been added.
* jh/trace2:
trace2: add for_each macros to clang-format
trace2: t/helper/test-trace2, t0210.sh, t0211.sh, t0212.sh
trace2:data: add subverb for rebase
trace2:data: add subverb to reset command
trace2:data: add subverb to checkout command
trace2:data: pack-objects: add trace2 regions
trace2:data: add trace2 instrumentation to index read/write
trace2:data: add trace2 hook classification
trace2:data: add trace2 transport child classification
trace2:data: add trace2 sub-process classification
trace2:data: add editor/pager child classification
trace2:data: add trace2 regions to wt-status
trace2: collect Windows-specific process information
trace2: create new combined trace facility
trace2: Documentation/technical/api-trace2.txt
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Four new configuration variables {author,committer}.{name,email}
have been introduced to override user.{name,email} in more specific
cases.
* wh/author-committer-ident-config:
config: allow giving separate author and committer idents
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Classify certain child processes as hooks.
Signed-off-by: Jeff Hostetler <jeffhost@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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This adds value completion for a couple more paramters. To make it
easier to maintain these hard coded lists, add a comment at the original
list/code to remind people to update git-completion.bash too.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The assumption to work on the single "in-core index" instance has
been reduced from the library-ish part of the codebase.
* nd/the-index-final:
cache.h: flip NO_THE_INDEX_COMPATIBILITY_MACROS switch
read-cache.c: remove the_* from index_has_changes()
merge-recursive.c: remove implicit dependency on the_repository
merge-recursive.c: remove implicit dependency on the_index
sha1-name.c: remove implicit dependency on the_index
read-cache.c: replace update_index_if_able with repo_&
read-cache.c: kill read_index()
checkout: avoid the_index when possible
repository.c: replace hold_locked_index() with repo_hold_locked_index()
notes-utils.c: remove the_repository references
grep: use grep_opt->repo instead of explict repo argument
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More code in "git bisect" has been rewritten in C.
* tt/bisect-in-c:
bisect--helper: `bisect_start` shell function partially in C
bisect--helper: `get_terms` & `bisect_terms` shell function in C
bisect--helper: `bisect_next_check` shell function in C
bisect--helper: `check_and_set_terms` shell function in C
wrapper: move is_empty_file() and rename it as is_empty_or_missing_file()
bisect--helper: `bisect_write` shell function in C
bisect--helper: `bisect_reset` shell function in C
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"git rebase --merge" as been reimplemented by reusing the internal
machinery used for "git rebase -i".
* en/rebase-merge-on-sequencer:
rebase: implement --merge via the interactive machinery
rebase: define linearization ordering and enforce it
git-legacy-rebase: simplify unnecessary triply-nested if
git-rebase, sequencer: extend --quiet option for the interactive machinery
am, rebase--merge: do not overlook --skip'ed commits with post-rewrite
t5407: add a test demonstrating how interactive handles --skip differently
rebase: fix incompatible options error message
rebase: make builtin and legacy script error messages the same
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The author.email, author.name, committer.email and committer.name
settings are analogous to the GIT_AUTHOR_* and GIT_COMMITTER_*
environment variables, but for the git config system. This allows them
to be set separately for each repository.
Git supports setting different authorship and committer
information with environment variables. However, environment variables
are set in the shell, so if different authorship and committer
information is needed for different repositories an external tool is
required.
This adds support to git config for author.email, author.name,
committer.email and committer.name settings so this information
can be set per repository.
Also, it generalizes the fmt_ident function so it can handle author vs
committer identification.
Signed-off-by: William Hubbs <williamh@gentoo.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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By default, index compat macros are off from now on, because they
could hide the_index dependency.
Only those in builtin can use it.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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read_index() shares the same problem as hold_locked_index(): it
assumes $GIT_DIR/index. Move all call sites to repo_read_index()
instead. read_index_preload() and read_index_unmerged() are also
killed as a consequence.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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More codepaths become aware of working with in-core repository
instance other than the default "the_repository".
* nd/the-index: (22 commits)
rebase-interactive.c: remove the_repository references
rerere.c: remove the_repository references
pack-*.c: remove the_repository references
pack-check.c: remove the_repository references
notes-cache.c: remove the_repository references
line-log.c: remove the_repository reference
diff-lib.c: remove the_repository references
delta-islands.c: remove the_repository references
cache-tree.c: remove the_repository references
bundle.c: remove the_repository references
branch.c: remove the_repository reference
bisect.c: remove the_repository reference
blame.c: remove implicit dependency the_repository
sequencer.c: remove implicit dependency on the_repository
sequencer.c: remove implicit dependency on the_index
transport.c: remove implicit dependency on the_index
notes-merge.c: remove implicit dependency the_repository
notes-merge.c: remove implicit dependency on the_index
list-objects.c: reduce the_repository references
list-objects-filter.c: remove implicit dependency on the_index
...
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is_empty_file() can help to refactor a lot of code. This will be very
helpful in porting "git bisect" to C.
Suggested-by: Torsten Bögershausen <tboegi@web.de>
Mentored-by: Lars Schneider <larsxschneider@gmail.com>
Mentored-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Pranit Bauva <pranit.bauva@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The post-rewrite hook is supposed to be invoked for each rewritten
commit. The fact that a commit was selected and processed by the rebase
operation (even though when we hit an error a user said it had no more
useful changes), suggests we should write an entry for it. In
particular, let's treat it as an empty commit trivially squashed into
its parent.
This brings the rebase--am and rebase--merge backends in sync with the
behavior of the interactive rebase backend.
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Various functions have been audited for "-Wunused-parameter" warnings
and bugs in them got fixed.
* jk/unused-parameter-fixes:
midx: double-check large object write loop
assert NOARG/NONEG behavior of parse-options callbacks
parse-options: drop OPT_DATE()
apply: return -1 from option callback instead of calling exit(1)
cat-file: report an error on multiple --batch options
tag: mark "--message" option with NONEG
show-branch: mark --reflog option as NONEG
format-patch: mark "--no-numbered" option with NONEG
status: mark --find-renames option with NONEG
cat-file: mark batch options with NONEG
pack-objects: mark index-version option as NONEG
ls-files: mark exclude options as NONEG
am: handle --no-patch-format option
apply: mark include/exclude options as NONEG
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Unify code to read the author-script used in "git am" and the
commands that use the sequencer machinery, e.g. "git rebase -i".
* pw/am-rebase-read-author-script:
sequencer: use read_author_script()
add read_author_script() to libgit
am: rename read_author_script()
am: improve author-script error reporting
am: don't die in read_author_script()
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Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Running "git am --no-patch-format" will currently segfault, since it
tries to parse a NULL argument. Instead, let's have it cancel any
previous --patch-format option.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Add read_author_script() to sequencer.c based on the implementation in
builtin/am.c and update read_am_author_script() to use
read_author_script(). The sequencer code that reads the author script
will be updated in the next commit.
Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Rename read_author_script() in preparation for adding a shared
read_author_script() function to libgit.
Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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If there are errors in a user edited author-script there was no
indication of what was wrong. This commit adds some specific error messages
depending on the problem. It also relaxes the requirement that the
variables appear in a specific order in the file to match the behavior
of 'rebase --interactive'.
Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The caller is already prepared to handle errors returned from this
function so there is no need for it to die if it cannot read the file.
Suggested-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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"git status" learns to show progress bar when refreshing the index
takes a long time.
* nd/status-refresh-progress:
status: show progress bar if refreshing the index takes too long
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Various codepaths in the core-ish part learn to work on an
arbitrary in-core index structure, not necessarily the default
instance "the_index".
* nd/the-index: (23 commits)
revision.c: reduce implicit dependency the_repository
revision.c: remove implicit dependency on the_index
ws.c: remove implicit dependency on the_index
tree-diff.c: remove implicit dependency on the_index
submodule.c: remove implicit dependency on the_index
line-range.c: remove implicit dependency on the_index
userdiff.c: remove implicit dependency on the_index
rerere.c: remove implicit dependency on the_index
sha1-file.c: remove implicit dependency on the_index
patch-ids.c: remove implicit dependency on the_index
merge.c: remove implicit dependency on the_index
merge-blobs.c: remove implicit dependency on the_index
ll-merge.c: remove implicit dependency on the_index
diff-lib.c: remove implicit dependency on the_index
read-cache.c: remove implicit dependency on the_index
diff.c: remove implicit dependency on the_index
grep.c: remove implicit dependency on the_index
diff.c: remove the_index dependency in textconv() functions
blame.c: rename "repo" argument to "r"
combine-diff.c: remove implicit dependency on the_index
...
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Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The reason rerere(), rerere_forget() and rerere_remaining() take a
struct repository instead of struct index_state is not obvious from
the patch:
Deep in update_paths() and find_conflict(), hold_locked_index() and
read_index() are called. These functions assumes the index path at
$GIT_DIR/index which is not always true when you take an arbitrary
index state. Taking a repository will allow us to point to the right
index path later when we replace them with repo_ versions.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Junio C Hamano
René Scharfe
Thomas Gummerer
Jeff King
Derrick Stolee
Nguyễn Thái Ngọc Duy
brian m. carlson
Jeff Hostetler
William Hubbs
Pranit Bauva
Elijah Newren
Phillip Wood