git
6 years agoUse specific diff rules for repo files oblomov/next
Giuseppe Bilotta [Mon, 1 Aug 2011 09:42:55 +0000 (11:42 +0200)] 
Use specific diff rules for repo files

Let's eat our own dogfood. (Also, this makes word diff much nicer on
git's own repo.)

Signed-off-by: Giuseppe Bilotta <giuseppe.bilotta@gmail.com>
6 years agoDiff patterns for POSIX shells
Giuseppe Bilotta [Mon, 1 Aug 2011 10:06:41 +0000 (12:06 +0200)] 
Diff patterns for POSIX shells

All diffs following a function definition will have that function name
as chunck header, but this is the best we can do with the current
userdiff capabilities.

Signed-off-by: Giuseppe Bilotta <giuseppe.bilotta@gmail.com>
6 years agoSync with master
Junio C Hamano [Thu, 15 Feb 2018 23:26:42 +0000 (15:26 -0800)] 
Sync with master

* master:
  Git 2.16.2
  Third batch for 2.17

6 years agoSync with 2.16.2
Junio C Hamano [Thu, 15 Feb 2018 23:24:55 +0000 (15:24 -0800)] 
Sync with 2.16.2

* tag 'v2.16.2':
  Git 2.16.2

6 years agoGit 2.16.2 v2.16.2
Junio C Hamano [Thu, 15 Feb 2018 23:21:23 +0000 (15:21 -0800)] 
Git 2.16.2

Signed-off-by: Junio C Hamano <gitster@pobox.com>
6 years agoMerge branch 'ab/doc-cat-file-e-still-shows-errors' into maint
Junio C Hamano [Thu, 15 Feb 2018 23:18:15 +0000 (15:18 -0800)] 
Merge branch 'ab/doc-cat-file-e-still-shows-errors' into maint

Doc update.

* ab/doc-cat-file-e-still-shows-errors:
  cat-file doc: document that -e will return some output

6 years agoMerge branch 'as/read-tree-prefix-doc-fix' into maint
Junio C Hamano [Thu, 15 Feb 2018 23:18:14 +0000 (15:18 -0800)] 
Merge branch 'as/read-tree-prefix-doc-fix' into maint

Doc update.

* as/read-tree-prefix-doc-fix:
  doc/read-tree: remove obsolete remark

6 years agoMerge branch 'nd/add-i-ignore-submodules' into maint
Junio C Hamano [Thu, 15 Feb 2018 23:18:13 +0000 (15:18 -0800)] 
Merge branch 'nd/add-i-ignore-submodules' into maint

"git add -p" was taught to ignore local changes to submodules as
they do not interfere with the partial addition of regular changes
anyway.

* nd/add-i-ignore-submodules:
  add--interactive: ignore submodule changes except HEAD

6 years agoMerge branch 'tg/stash-with-pathspec-fix' into maint
Junio C Hamano [Thu, 15 Feb 2018 23:18:13 +0000 (15:18 -0800)] 
Merge branch 'tg/stash-with-pathspec-fix' into maint

"git stash -- <pathspec>" incorrectly blew away untracked files in
the directory that matched the pathspec, which has been corrected.

* tg/stash-with-pathspec-fix:
  stash: don't delete untracked files that match pathspec

6 years agoMerge branch 'jk/abort-clone-with-existing-dest' into maint
Junio C Hamano [Thu, 15 Feb 2018 23:18:12 +0000 (15:18 -0800)] 
Merge branch 'jk/abort-clone-with-existing-dest' into maint

"git clone $there $here" is allowed even when here directory exists
as long as it is an empty directory, but the command incorrectly
removed it upon a failure of the operation.

* jk/abort-clone-with-existing-dest:
  clone: do not clean up directories we didn't create
  clone: factor out dir_exists() helper
  t5600: modernize style
  t5600: fix outdated comment about unborn HEAD

6 years agoMerge branch 'jc/merge-symlink-ours-theirs' into maint
Junio C Hamano [Thu, 15 Feb 2018 23:18:12 +0000 (15:18 -0800)] 
Merge branch 'jc/merge-symlink-ours-theirs' into maint

"git merge -Xours/-Xtheirs" learned to use our/their version when
resolving a conflicting updates to a symbolic link.

* jc/merge-symlink-ours-theirs:
  merge: teach -Xours/-Xtheirs to symbolic link merge

6 years agoMerge branch 'rs/lose-leak-pending' into maint
Junio C Hamano [Thu, 15 Feb 2018 23:18:11 +0000 (15:18 -0800)] 
Merge branch 'rs/lose-leak-pending' into maint

API clean-up around revision traversal.

* rs/lose-leak-pending:
  commit: remove unused function clear_commit_marks_for_object_array()
  revision: remove the unused flag leak_pending
  checkout: avoid using the rev_info flag leak_pending
  bundle: avoid using the rev_info flag leak_pending
  bisect: avoid using the rev_info flag leak_pending
  object: add clear_commit_marks_all()
  ref-filter: use clear_commit_marks_many() in do_merge_filter()
  commit: use clear_commit_marks_many() in remove_redundant()
  commit: avoid allocation in clear_commit_marks_many()

6 years agoMerge branch 'jm/svn-pushmergeinfo-fix' into maint
Junio C Hamano [Thu, 15 Feb 2018 23:18:11 +0000 (15:18 -0800)] 
Merge branch 'jm/svn-pushmergeinfo-fix' into maint

"git svn dcommit" did not take into account the fact that a
svn+ssh:// URL with a username@ (typically used for pushing) refers
to the same SVN repository without the username@ and failed when
svn.pushmergeinfo option is set.

* jm/svn-pushmergeinfo-fix:
  git-svn: fix svn.pushmergeinfo handling of svn+ssh usernames.

6 years agoMerge branch 'dk/describe-all-output-fix' into maint
Junio C Hamano [Thu, 15 Feb 2018 23:18:10 +0000 (15:18 -0800)] 
Merge branch 'dk/describe-all-output-fix' into maint

An old regression in "git describe --all $annotated_tag^0" has been
fixed.

* dk/describe-all-output-fix:
  describe: prepend "tags/" when describing tags with embedded name

6 years agoMerge branch 'ab/perf-grep-threads' into maint
Junio C Hamano [Thu, 15 Feb 2018 23:18:09 +0000 (15:18 -0800)] 
Merge branch 'ab/perf-grep-threads' into maint

More perf tests for threaded grep

* ab/perf-grep-threads:
  perf: amend the grep tests to test grep.threads

6 years agoThird batch for 2.17
Junio C Hamano [Thu, 15 Feb 2018 22:56:49 +0000 (14:56 -0800)] 
Third batch for 2.17

Signed-off-by: Junio C Hamano <gitster@pobox.com>
6 years agoMerge branch 'bc/hash-algo'
Junio C Hamano [Thu, 15 Feb 2018 22:55:47 +0000 (14:55 -0800)] 
Merge branch 'bc/hash-algo'

More abstraction of hash function from the codepath.

* bc/hash-algo:
  hash: update obsolete reference to SHA1_HEADER
  bulk-checkin: abstract SHA-1 usage
  csum-file: abstract uses of SHA-1
  csum-file: rename sha1file to hashfile
  read-cache: abstract away uses of SHA-1
  pack-write: switch various SHA-1 values to abstract forms
  pack-check: convert various uses of SHA-1 to abstract forms
  fast-import: switch various uses of SHA-1 to the_hash_algo
  sha1_file: switch uses of SHA-1 to the_hash_algo
  builtin/unpack-objects: switch uses of SHA-1 to the_hash_algo
  builtin/index-pack: improve hash function abstraction
  hash: create union for hash context allocation
  hash: move SHA-1 macros to hash.h

6 years agoMerge branch 'nd/ignore-glob-doc-update'
Junio C Hamano [Thu, 15 Feb 2018 22:55:46 +0000 (14:55 -0800)] 
Merge branch 'nd/ignore-glob-doc-update'

Doc update.

* nd/ignore-glob-doc-update:
  gitignore.txt: elaborate shell glob syntax

6 years agoMerge branch 'tg/reset-hard-show-head-with-pretty'
Junio C Hamano [Thu, 15 Feb 2018 22:55:45 +0000 (14:55 -0800)] 
Merge branch 'tg/reset-hard-show-head-with-pretty'

The way "git reset --hard" reports the commit the updated HEAD
points at is made consistent with the way how the commit title is
generated by the other parts of the system.  This matters when the
title is spread across physically multiple lines.

* tg/reset-hard-show-head-with-pretty:
  reset --hard: make use of the pretty machinery

6 years agoMerge branch 'rs/cocci-strbuf-addf-to-addstr'
Junio C Hamano [Thu, 15 Feb 2018 22:55:44 +0000 (14:55 -0800)] 
Merge branch 'rs/cocci-strbuf-addf-to-addstr'

* rs/cocci-strbuf-addf-to-addstr:
  cocci: simplify check for trivial format strings

6 years agoMerge branch 'nd/trace-index-ops'
Junio C Hamano [Thu, 15 Feb 2018 22:55:44 +0000 (14:55 -0800)] 
Merge branch 'nd/trace-index-ops'

* nd/trace-index-ops:
  trace: measure where the time is spent in the index-heavy operations

6 years agoMerge branch 'cc/perf-aggregate'
Junio C Hamano [Thu, 15 Feb 2018 22:55:44 +0000 (14:55 -0800)] 
Merge branch 'cc/perf-aggregate'

"make perf" enhancement.

* cc/perf-aggregate:
  perf/aggregate: sort JSON fields in output
  perf/aggregate: add --reponame option
  perf/aggregate: add --subsection option

6 years agoMerge branch 'ab/wildmatch-tests'
Junio C Hamano [Thu, 15 Feb 2018 22:55:44 +0000 (14:55 -0800)] 
Merge branch 'ab/wildmatch-tests'

More tests for wildmatch functions.

* ab/wildmatch-tests:
  wildmatch test: mark test as EXPENSIVE_ON_WINDOWS
  test-lib: add an EXPENSIVE_ON_WINDOWS prerequisite
  wildmatch test: create & test files on disk in addition to in-memory
  wildmatch test: perform all tests under all wildmatch() modes
  wildmatch test: use test_must_fail, not ! for test-wildmatch
  wildmatch test: remove dead fnmatch() test code
  wildmatch test: use a paranoia pattern from nul_match()
  wildmatch test: don't try to vertically align our output
  wildmatch test: use more standard shell style
  wildmatch test: indent with tabs, not spaces

6 years agoMerge branch 'po/object-id'
Junio C Hamano [Thu, 15 Feb 2018 22:55:43 +0000 (14:55 -0800)] 
Merge branch 'po/object-id'

Conversion from uchar[20] to struct object_id continues.

* po/object-id:
  sha1_file: rename hash_sha1_file_literally
  sha1_file: convert write_loose_object to object_id
  sha1_file: convert force_object_loose to object_id
  sha1_file: convert write_sha1_file to object_id
  notes: convert write_notes_tree to object_id
  notes: convert combine_notes_* to object_id
  commit: convert commit_tree* to object_id
  match-trees: convert splice_tree to object_id
  cache: clear whole hash buffer with oidclr
  sha1_file: convert hash_sha1_file to object_id
  dir: convert struct sha1_stat to use object_id
  sha1_file: convert pretend_sha1_file to object_id

6 years agoMerge branch 'sb/pull-rebase-submodule'
Junio C Hamano [Thu, 15 Feb 2018 22:55:43 +0000 (14:55 -0800)] 
Merge branch 'sb/pull-rebase-submodule'

"git pull --rebase" did not pass verbosity setting down when
recursing into a submodule.

* sb/pull-rebase-submodule:
  builtin/pull: respect verbosity settings in submodules

6 years agoMerge branch 'kg/packed-ref-cache-fix'
Junio C Hamano [Thu, 15 Feb 2018 22:55:42 +0000 (14:55 -0800)] 
Merge branch 'kg/packed-ref-cache-fix'

Avoid mmapping small files while using packed refs (especially ones
with zero size, which would cause later munmap() to fail).

* kg/packed-ref-cache-fix:
  packed_ref_cache: don't use mmap() for small files
  load_contents(): don't try to mmap an empty file
  packed_ref_iterator_begin(): make optimization more general
  find_reference_location(): make function safe for empty snapshots
  create_snapshot(): use `xmemdupz()` rather than a strbuf
  struct snapshot: store `start` rather than `header_len`

6 years agoMerge branch 'jt/fsck-code-cleanup'
Junio C Hamano [Thu, 15 Feb 2018 22:55:41 +0000 (14:55 -0800)] 
Merge branch 'jt/fsck-code-cleanup'

Plug recently introduced leaks in fsck.

* jt/fsck-code-cleanup:
  fsck: fix leak when traversing trees

6 years agoMerge branch 'en/merge-recursive-fixes'
Junio C Hamano [Thu, 15 Feb 2018 22:55:40 +0000 (14:55 -0800)] 
Merge branch 'en/merge-recursive-fixes'

* en/merge-recursive-fixes:
  merge-recursive: add explanation for src_entry and dst_entry
  merge-recursive: fix logic ordering issue
  Tighten and correct a few testcases for merging and cherry-picking

6 years agoMerge branch 'jc/worktree-add-short-help'
Junio C Hamano [Thu, 15 Feb 2018 22:55:40 +0000 (14:55 -0800)] 
Merge branch 'jc/worktree-add-short-help'

Error message fix.

* jc/worktree-add-short-help:
  worktree: say that "add" takes an arbitrary commit in short-help

6 years agoMerge branch 'ab/sha1dc-build'
Junio C Hamano [Thu, 15 Feb 2018 22:55:40 +0000 (14:55 -0800)] 
Merge branch 'ab/sha1dc-build'

Push the submodule version of collision-detecting SHA-1 hash
implementation a bit harder on builders.

* ab/sha1dc-build:
  sha1dc_git.h: re-arrange an ifdef chain for a subsequent change
  Makefile: under "make dist", include the sha1collisiondetection submodule
  Makefile: don't error out under DC_SHA1_EXTERNAL if DC_SHA1_SUBMODULE=auto

6 years agoMerge branch 'jt/binsearch-with-fanout' into next
Junio C Hamano [Thu, 15 Feb 2018 21:11:16 +0000 (13:11 -0800)] 
Merge branch 'jt/binsearch-with-fanout' into next

* jt/binsearch-with-fanout:
  packfile: refactor hash search with fanout table
  packfile: remove GIT_DEBUG_LOOKUP log statements

6 years agopackfile: refactor hash search with fanout table
Jonathan Tan [Tue, 13 Feb 2018 18:39:39 +0000 (10:39 -0800)] 
packfile: refactor hash search with fanout table

Subsequent patches will introduce file formats that make use of a fanout
array and a sorted table containing hashes, just like packfiles.
Refactor the hash search in packfile.c into its own function, so that
those patches can make use of it as well.

Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
6 years agopackfile: remove GIT_DEBUG_LOOKUP log statements
Jonathan Tan [Tue, 13 Feb 2018 18:39:38 +0000 (10:39 -0800)] 
packfile: remove GIT_DEBUG_LOOKUP log statements

In commit 628522ec1439 ("sha1-lookup: more memory efficient search in
sorted list of SHA-1", 2008-04-09), a different algorithm for searching
a sorted list was introduced, together with a set of log statements
guarded by GIT_DEBUG_LOOKUP that are invoked both when using that
algorithm and when using the existing binary search. Those log
statements was meant for experiments and debugging, but with the removal
of the aforementioned different algorithm in commit f1068efefe6d
("sha1_file: drop experimental GIT_USE_LOOKUP search", 2017-08-09),
those log statements are probably no longer necessary.

Remove those statements.

Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
6 years agoRevert "Merge branch 'jt/binsearch-with-fanout' into next"
Junio C Hamano [Thu, 15 Feb 2018 21:08:21 +0000 (13:08 -0800)] 
Revert "Merge branch 'jt/binsearch-with-fanout' into next"

This reverts commit 86fc3e8104af660d0eddb69be81160f6ef5cd14a, reversing
changes made to d8f074e6fb809bd64ad443ba0ea6f23a6a657d90.

6 years agoMerge branch 'bp/fsmonitor' into next
Junio C Hamano [Wed, 14 Feb 2018 21:34:37 +0000 (13:34 -0800)] 
Merge branch 'bp/fsmonitor' into next

Doc update for a recently added feature.

* bp/fsmonitor:
  fsmonitor: update documentation to remove reference to invalid config settings

6 years agoMerge branch 'jk/sq-dequote-on-bogus-input' into next
Junio C Hamano [Wed, 14 Feb 2018 21:34:36 +0000 (13:34 -0800)] 
Merge branch 'jk/sq-dequote-on-bogus-input' into next

Code to unquote single-quoted string (used in the parser for
configuration files, etc.) did not diagnose bogus input correctly
and produced bogus results instead.

* jk/sq-dequote-on-bogus-input:
  sq_dequote: fix extra consumption of source string

6 years agoMerge branch 'jk/test-hashmap-updates' into next
Junio C Hamano [Wed, 14 Feb 2018 21:34:35 +0000 (13:34 -0800)] 
Merge branch 'jk/test-hashmap-updates' into next

Code clean-up.

* jk/test-hashmap-updates:
  test-hashmap: use "unsigned int" for hash storage
  test-hashmap: simplify alloc_test_entry
  test-hashmap: use strbuf_getline rather than fgets
  test-hashmap: use xsnprintf rather than snprintf
  test-hashmap: check allocation computation for overflow
  test-hashmap: use ALLOC_ARRAY rather than bare malloc

6 years agoMerge branch 'rd/typofix' into next
Junio C Hamano [Wed, 14 Feb 2018 21:34:35 +0000 (13:34 -0800)] 
Merge branch 'rd/typofix' into next

Typofix.

* rd/typofix:
  Correct mispellings of ".gitmodule" to ".gitmodules"
  t/: correct obvious typo "detahced"

6 years agoMerge branch 'bc/doc-interpret-trailers-grammofix' into next
Junio C Hamano [Wed, 14 Feb 2018 21:34:34 +0000 (13:34 -0800)] 
Merge branch 'bc/doc-interpret-trailers-grammofix' into next

Docfix.

* bc/doc-interpret-trailers-grammofix:
  docs/interpret-trailers: fix agreement error

6 years agoMerge branch 'as/ll-i18n' into next
Junio C Hamano [Wed, 14 Feb 2018 21:34:33 +0000 (13:34 -0800)] 
Merge branch 'as/ll-i18n' into next

Some messages in low level start-up codepath have been i18n-ized.

* as/ll-i18n:
  Mark messages for translations

6 years agoMerge branch 'sg/doc-test-must-fail-args' into next
Junio C Hamano [Wed, 14 Feb 2018 21:34:33 +0000 (13:34 -0800)] 
Merge branch 'sg/doc-test-must-fail-args' into next

Devdoc update.

* sg/doc-test-must-fail-args:
  t: document 'test_must_fail ok=<signal-name>'

6 years agoMerge branch 'sb/describe-blob' into next
Junio C Hamano [Wed, 14 Feb 2018 21:34:32 +0000 (13:34 -0800)] 
Merge branch 'sb/describe-blob' into next

"git describe $garbage" stopped giving any errors when the garbage
happens to be a string with 40 hexadecimal letters.

* sb/describe-blob:
  describe: confirm that blobs actually exist

6 years agoMerge branch 'rs/check-ignore-multi' into next
Junio C Hamano [Wed, 14 Feb 2018 21:34:31 +0000 (13:34 -0800)] 
Merge branch 'rs/check-ignore-multi' into next

"git check-ignore" with multiple paths got confused when one is a
file and the other is a directory, which has been fixed.

* rs/check-ignore-multi:
  check-ignore: fix mix of directories and other file types

6 years agoMerge branch 'rj/sparse-updates' into next
Junio C Hamano [Wed, 14 Feb 2018 21:34:31 +0000 (13:34 -0800)] 
Merge branch 'rj/sparse-updates' into next

Devtool update.

* rj/sparse-updates:
  Makefile: suppress a sparse warning for pack-revindex.c
  config.mak.uname: remove SPARSE_FLAGS setting for cygwin

6 years agoMerge branch 'jk/t0002-simplify' into next
Junio C Hamano [Wed, 14 Feb 2018 21:34:30 +0000 (13:34 -0800)] 
Merge branch 'jk/t0002-simplify' into next

Code cleanup.

* jk/t0002-simplify:
  t0002: simplify error checking

6 years agoMerge branch 'ab/untracked-cache-invalidation-docs' into next
Junio C Hamano [Wed, 14 Feb 2018 21:34:30 +0000 (13:34 -0800)] 
Merge branch 'ab/untracked-cache-invalidation-docs' into next

Doc update to warn against remaining bugs in untracked cache.

* ab/untracked-cache-invalidation-docs:
  update-index doc: note the caveat with "could not open..."
  update-index doc: note a fixed bug in the untracked cache

6 years agoMerge branch 'js/packet-read-line-check-null' into next
Junio C Hamano [Wed, 14 Feb 2018 21:34:30 +0000 (13:34 -0800)] 
Merge branch 'js/packet-read-line-check-null' into next

Some low level protocol codepath could crash when they get an
unexpected flush packet, which is now fixed.

* js/packet-read-line-check-null:
  always check for NULL return from packet_read_line()
  correct error messages for NULL packet_read_line()

6 years agoMerge branch 'js/fix-merge-arg-quoting-in-rebase-p' into next
Junio C Hamano [Wed, 14 Feb 2018 21:34:29 +0000 (13:34 -0800)] 
Merge branch 'js/fix-merge-arg-quoting-in-rebase-p' into next

"git rebase -p" mangled log messages of a merge commit, which is
now fixed.

* js/fix-merge-arg-quoting-in-rebase-p:
  rebase -p: fix incorrect commit message when calling `git merge`.

6 years agoMerge branch 'jk/gettext-poison' into next
Junio C Hamano [Wed, 14 Feb 2018 21:34:29 +0000 (13:34 -0800)] 
Merge branch 'jk/gettext-poison' into next

Test updates.

* jk/gettext-poison:
  git-sh-i18n: check GETTEXT_POISON before USE_GETTEXT_SCHEME
  t0205: drop redundant test

6 years agoMerge branch 'jk/doc-do-not-write-extern' into next
Junio C Hamano [Wed, 14 Feb 2018 21:34:29 +0000 (13:34 -0800)] 
Merge branch 'jk/doc-do-not-write-extern' into next

Devdoc update.

* jk/doc-do-not-write-extern:
  CodingGuidelines: mention "static" and "extern"

6 years agoMerge branch 'bp/name-hash-dirname-fix' into next
Junio C Hamano [Wed, 14 Feb 2018 21:34:29 +0000 (13:34 -0800)] 
Merge branch 'bp/name-hash-dirname-fix' into next

"git add" files in the same directory, but spelling the directory
path in different cases on case insensitive filesystem, corrupted
the name hash data structure and led to unexpected results.  This
has been corrected.

* bp/name-hash-dirname-fix:
  name-hash: properly fold directory names in adjust_dirname_case()

6 years agoMerge branch 'jc/blame-missing-path' into next
Junio C Hamano [Wed, 14 Feb 2018 21:34:27 +0000 (13:34 -0800)] 
Merge branch 'jc/blame-missing-path' into next

"git blame HEAD COPYING" in a bare repository failed to run, while
"git blame HEAD -- COPYING" run just fine.  This has been corrected.

* jc/blame-missing-path:
  blame: tighten command line parser

6 years agoCorrect mispellings of ".gitmodule" to ".gitmodules"
Robert P. J. Day [Wed, 14 Feb 2018 00:09:31 +0000 (19:09 -0500)] 
Correct mispellings of ".gitmodule" to ".gitmodules"

There are a small number of misspellings, ".gitmodule", scattered
throughout the code base, correct them ... no apparent functional
changes.

Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
6 years agot/: correct obvious typo "detahced"
Robert P. J. Day [Wed, 14 Feb 2018 09:08:01 +0000 (04:08 -0500)] 
t/: correct obvious typo "detahced"

Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
6 years agosq_dequote: fix extra consumption of source string
Jeff King [Tue, 13 Feb 2018 23:41:49 +0000 (18:41 -0500)] 
sq_dequote: fix extra consumption of source string

This fixes a (probably harmless) parsing problem in
sq_dequote_step(), in which we parse some bogus input
incorrectly rather than complaining that it's bogus.

Our shell-dequoting function is very strict: it can unquote
everything generated by sq_quote(), but not arbitrary
strings. In particular, it only allows characters outside of
the single-quoted string if they are immediately backslashed
and then the single-quoted string is resumed. So:

  'foo'\''bar'

is OK. But these are not:

  'foo'\'bar
  'foo'\'
  'foo'\'\''bar'

even though they are all valid shell. The parser has a funny
corner case here. When we see a backslashed character, we
keep incrementing the "src" pointer as we parse it. For a
single sq_dequote() call, that's OK; our next step is to
bail with an error, and we don't care where "src" points.

But if we're parsing multiple strings with sq_dequote_to_argv(),
then our next step is to see if the string is followed by
whitespace. Because we erroneously incremented the "src"
pointer, we don't barf on the bogus backslash that we
skipped. Instead, we may find whitespace that immediately
follows it, and continue as if all is well (skipping the
backslashed character completely!).

In practice, this shouldn't be a big deal. The input is
bogus, and our sq_quote() would never generate this bogus
input. In all but one callers, we are parsing input created
by an earlier call to sq_quote(). That final case is "git
shell", which parses shell-quoting generated by the client.
And in that case we use the singular sq_quote(), which has
always behaved correctly.

One might also wonder if you could provoke a read past the
end of the string. But the answer is no; we still parse
character by character, and would never advance past a NUL.

This patch implements the minimal fix, along with
documenting the restriction (which confused at least me
while reading the code). We should possibly consider
being more liberal in accepting valid shell-quoted words. I
suspect the code may actually be simpler, and it would be
more friendly to anybody generating or editing input by
hand. But I wanted to fix just the immediate bug in this
patch.

We don't have a direct way to unit-test the sq_dequote()
functions, but we can do this by feeding input to
GIT_CONFIG_PARAMETERS (which is not normally a user-facing
interface, but serves here as it expects to see sq_quote()
input from "git -c"). I've included both a bogus example,
and a related "good" one to confirm that we still parse it
correctly.

Noticed-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
6 years agotest-hashmap: use "unsigned int" for hash storage
Jeff King [Wed, 14 Feb 2018 18:08:57 +0000 (13:08 -0500)] 
test-hashmap: use "unsigned int" for hash storage

The hashmap API always use an unsigned value for storing
and comparing hashes. Whereas this test code uses "int".
This works out in practice since one can typically
round-trip between "int" and "unsigned int". But since this
is essentially reference code for the hashmap API, we should
model using the correct types.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
6 years agotest-hashmap: simplify alloc_test_entry
Jeff King [Wed, 14 Feb 2018 18:08:20 +0000 (13:08 -0500)] 
test-hashmap: simplify alloc_test_entry

This function takes two ptr/len pairs, which implies that
they can be arbitrary buffers. But internally, it assumes
that each "ptr" is NUL-terminated at "len" (because we
memcpy an extra byte to pick up the NUL terminator).

In practice this works because each caller only ever passes
strlen(ptr) as the length. But let's drop the "len"
parameters to make our expectations clear.

Note that we can get rid of the "l1" and "l2" variables from
cmd_main() as a further cleanup, since they are now mostly
used to check whether the p1 and p2 arguments are present
(technically the length parameters conflated NULL with the
empty string, which we no longer do, but I think that is
actually an improvement).

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
6 years agotest-hashmap: use strbuf_getline rather than fgets
Jeff King [Wed, 14 Feb 2018 18:07:19 +0000 (13:07 -0500)] 
test-hashmap: use strbuf_getline rather than fgets

Using fgets() with a fixed-size buffer can lead to lines
being accidentally split across two calls if they are larger
than the buffer size.

As this is just a test helper, this is unlikely to be a
problem in practice. But since people may look at test
helpers as reference code, it's a good idea for them to
model the preferred behavior.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
6 years agotest-hashmap: use xsnprintf rather than snprintf
Jeff King [Wed, 14 Feb 2018 18:06:57 +0000 (13:06 -0500)] 
test-hashmap: use xsnprintf rather than snprintf

In general, using a bare snprintf can truncate the resulting
buffer, leading to confusing results. In this case we know
that our buffer is sized large enough to accommodate our
loop, so there's no bug. However, we should use xsnprintf()
to document (and check) that assumption, and to model good
practice to people reading the code.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
6 years agotest-hashmap: check allocation computation for overflow
Jeff King [Wed, 14 Feb 2018 18:06:34 +0000 (13:06 -0500)] 
test-hashmap: check allocation computation for overflow

When we allocate the test_entry flex-struct, we have to add
up all of the elements that go into the flex array. If these
were to overflow a size_t, this would allocate a too-small
buffer, which we would then overflow in our memcpy steps.

Since this is just a test-helper, it probably doesn't matter
in practice, but we should model the correct technique by
using the st_add() macros.

Unfortunately, we cannot use the FLEX_ALLOC() macros here,
because we are stuffing two different buffers into a single
flex array.

While we're here, let's also swap out "malloc" for our
error-checking "xmalloc", and use the preferred
"sizeof(*var)" instead of "sizeof(type)".

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
6 years agotest-hashmap: use ALLOC_ARRAY rather than bare malloc
Jeff King [Wed, 14 Feb 2018 18:05:46 +0000 (13:05 -0500)] 
test-hashmap: use ALLOC_ARRAY rather than bare malloc

These two array allocations have several minor flaws:

  - they use bare malloc, rather than our error-checking
    xmalloc

  - they do a bare multiplication to determine the total
    size (which in theory can overflow, though in this case
    the sizes are all constants)

  - they use sizeof(type), but the type in the second one
    doesn't match the actual array (though it's "int" versus
    "unsigned int", which are guaranteed by C99 to have the
    same size)

None of these are likely to be problems in practice, and
this is just a test helper. But since people often look at
test helpers as reference code, we should do our best to
model the recommended techniques.

Switching to ALLOC_ARRAY fixes all three.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
6 years agofsmonitor: update documentation to remove reference to invalid config settings
Ben Peart [Wed, 14 Feb 2018 15:41:30 +0000 (10:41 -0500)] 
fsmonitor: update documentation to remove reference to invalid config settings

Remove the reference to setting core.fsmonitor to `true` (or `false`) as those
are not valid settings.

Signed-off-by: Ben Peart <benpeart@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
6 years agoSync with master
Junio C Hamano [Wed, 14 Feb 2018 00:43:09 +0000 (16:43 -0800)] 
Sync with master

* master:
  Second batch for 2.17

6 years agoSecond batch for 2.17
Junio C Hamano [Wed, 14 Feb 2018 00:22:16 +0000 (16:22 -0800)] 
Second batch for 2.17

Signed-off-by: Junio C Hamano <gitster@pobox.com>
6 years agoMerge branch 'tz/doc-show-defaults-to-head'
Junio C Hamano [Tue, 13 Feb 2018 21:39:17 +0000 (13:39 -0800)] 
Merge branch 'tz/doc-show-defaults-to-head'

Doc update.

* tz/doc-show-defaults-to-head:
  doc: mention 'git show' defaults to HEAD

6 years agoMerge branch 'ew/svn-branch-segfault-fix'
Junio C Hamano [Tue, 13 Feb 2018 21:39:16 +0000 (13:39 -0800)] 
Merge branch 'ew/svn-branch-segfault-fix'

Workaround for segfault with more recent versions of SVN.

* ew/svn-branch-segfault-fix:
  git-svn: control destruction order to avoid segfault

6 years agoMerge branch 'sg/travis-linux32-sanity'
Junio C Hamano [Tue, 13 Feb 2018 21:39:16 +0000 (13:39 -0800)] 
Merge branch 'sg/travis-linux32-sanity'

Travis updates.

* sg/travis-linux32-sanity:
  travis-ci: don't fail if user already exists on 32 bit Linux build job
  travis-ci: don't run the test suite as root in the 32 bit Linux build
  travis-ci: don't repeat the path of the cache directory
  travis-ci: use 'set -e' in the 32 bit Linux build job
  travis-ci: use 'set -x' for the commands under 'su' in the 32 bit Linux build

6 years agoMerge branch 'nd/list-merge-strategy'
Junio C Hamano [Tue, 13 Feb 2018 21:39:15 +0000 (13:39 -0800)] 
Merge branch 'nd/list-merge-strategy'

Completion of "git merge -s<strategy>" (in contrib/) did not work
well in non-C locale.

* nd/list-merge-strategy:
  completion: fix completing merge strategies on non-C locales

6 years agoMerge branch 'jt/long-running-process-doc'
Junio C Hamano [Tue, 13 Feb 2018 21:39:15 +0000 (13:39 -0800)] 
Merge branch 'jt/long-running-process-doc'

Doc updates.

* jt/long-running-process-doc:
  Docs: split out long-running subprocess handshake

6 years agoMerge branch 'jk/daemon-fixes'
Junio C Hamano [Tue, 13 Feb 2018 21:39:15 +0000 (13:39 -0800)] 
Merge branch 'jk/daemon-fixes'

Assorted fixes to "git daemon".

* jk/daemon-fixes:
  daemon: fix length computation in newline stripping
  t/lib-git-daemon: add network-protocol helpers
  daemon: handle NULs in extended attribute string
  daemon: fix off-by-one in logging extended attributes
  t/lib-git-daemon: record daemon log
  t5570: use ls-remote instead of clone for interp tests

6 years agoMerge branch 'pw/sequencer-in-process-commit'
Junio C Hamano [Tue, 13 Feb 2018 21:39:15 +0000 (13:39 -0800)] 
Merge branch 'pw/sequencer-in-process-commit'

The sequencer infrastructure is shared across "git cherry-pick",
"git rebase -i", etc., and has always spawned "git commit" when it
needs to create a commit.  It has been taught to do so internally,
when able, by reusing the codepath "git commit" itself uses, which
gives performance boost for a few tens of percents in some sample
scenarios.

* pw/sequencer-in-process-commit:
  sequencer: run 'prepare-commit-msg' hook
  t7505: add tests for cherry-pick and rebase -i/-p
  t7505: style fixes
  sequencer: assign only free()able strings to gpg_sign
  sequencer: improve config handling
  t3512/t3513: remove KNOWN_FAILURE_CHERRY_PICK_SEES_EMPTY_COMMIT=1
  sequencer: try to commit without forking 'git commit'
  sequencer: load commit related config
  sequencer: simplify adding Signed-off-by: trailer
  commit: move print_commit_summary() to libgit
  commit: move post-rewrite code to libgit
  Add a function to update HEAD after creating a commit
  commit: move empty message checks to libgit
  t3404: check intermediate squash messages

6 years agoMerge branch 'nd/shared-index-fix'
Junio C Hamano [Tue, 13 Feb 2018 21:39:14 +0000 (13:39 -0800)] 
Merge branch 'nd/shared-index-fix'

Code clean-up.

* nd/shared-index-fix:
  read-cache: don't write index twice if we can't write shared index
  read-cache.c: move tempfile creation/cleanup out of write_shared_index
  read-cache.c: change type of "temp" in write_shared_index()

6 years agoMerge branch 'po/http-push-error-message'
Junio C Hamano [Tue, 13 Feb 2018 21:39:14 +0000 (13:39 -0800)] 
Merge branch 'po/http-push-error-message'

Debugging aid.

* po/http-push-error-message:
  http-push: improve error log

6 years agoMerge branch 'po/clang-format-functype-weight'
Junio C Hamano [Tue, 13 Feb 2018 21:39:14 +0000 (13:39 -0800)] 
Merge branch 'po/clang-format-functype-weight'

Prevent "clang-format" from breaking line after function return type.

* po/clang-format-functype-weight:
  clang-format: adjust penalty for return type line break

6 years agoMerge branch 'jc/mailinfo-cleanup-fix'
Junio C Hamano [Tue, 13 Feb 2018 21:39:14 +0000 (13:39 -0800)] 
Merge branch 'jc/mailinfo-cleanup-fix'

Corner case bugfix.

* jc/mailinfo-cleanup-fix:
  mailinfo: avoid segfault when can't open files

6 years agoMerge branch 'sg/cocci-move-array'
Junio C Hamano [Tue, 13 Feb 2018 21:39:13 +0000 (13:39 -0800)] 
Merge branch 'sg/cocci-move-array'

Code clean-up.

* sg/cocci-move-array:
  Use MOVE_ARRAY

6 years agoMerge branch 'tg/split-index-fixes'
Junio C Hamano [Tue, 13 Feb 2018 21:39:12 +0000 (13:39 -0800)] 
Merge branch 'tg/split-index-fixes'

The split-index mode had a few corner case bugs fixed.

* tg/split-index-fixes:
  travis: run tests with GIT_TEST_SPLIT_INDEX
  split-index: don't write cache tree with null oid entries
  read-cache: fix reading the shared index for other repos

6 years agoMerge branch 'rs/strbuf-cocci-workaround'
Junio C Hamano [Tue, 13 Feb 2018 21:39:12 +0000 (13:39 -0800)] 
Merge branch 'rs/strbuf-cocci-workaround'

Update Coccinelle rules to catch and optimize strbuf_addf(&buf, "%s", str)

* rs/strbuf-cocci-workaround:
  cocci: use format keyword instead of a literal string

6 years agoMerge branch 'mr/packed-ref-store-fix'
Junio C Hamano [Tue, 13 Feb 2018 21:39:11 +0000 (13:39 -0800)] 
Merge branch 'mr/packed-ref-store-fix'

Crash fix for a corner case where an error codepath tried to unlock
what it did not acquire lock on.

* mr/packed-ref-store-fix:
  files_initial_transaction_commit(): only unlock if locked

6 years agoMerge branch 'jt/http-redact-cookies'
Junio C Hamano [Tue, 13 Feb 2018 21:39:11 +0000 (13:39 -0800)] 
Merge branch 'jt/http-redact-cookies'

The http tracing code, often used to debug connection issues,
learned to redact potentially sensitive information from its output
so that it can be more safely sharable.

* jt/http-redact-cookies:
  http: support omitting data from traces
  http: support cookie redaction when tracing

6 years agoMerge branch 'ds/use-get-be64'
Junio C Hamano [Tue, 13 Feb 2018 21:39:11 +0000 (13:39 -0800)] 
Merge branch 'ds/use-get-be64'

Code clean-up.

* ds/use-get-be64:
  packfile: use get_be64() for large offsets

6 years agoMerge branch 'cc/sha1-file-name'
Junio C Hamano [Tue, 13 Feb 2018 21:39:10 +0000 (13:39 -0800)] 
Merge branch 'cc/sha1-file-name'

Code clean-up.

* cc/sha1-file-name:
  sha1_file: improve sha1_file_name() perfs
  sha1_file: remove static strbuf from sha1_file_name()

6 years agoMerge branch 'nd/trace-with-env'
Junio C Hamano [Tue, 13 Feb 2018 21:39:10 +0000 (13:39 -0800)] 
Merge branch 'nd/trace-with-env'

The tracing machinery learned to report tweaking of environment
variables as well.

* nd/trace-with-env:
  run-command.c: print new cwd in trace_run_command()
  run-command.c: print env vars in trace_run_command()
  run-command.c: print program 'git' when tracing git_cmd mode
  run-command.c: introduce trace_run_command()
  trace.c: move strbuf_release() out of print_trace_line()
  trace: avoid unnecessary quoting
  sq_quote_argv: drop maxlen parameter

6 years agoMerge branch 'pc/submodule-helper'
Junio C Hamano [Tue, 13 Feb 2018 21:39:10 +0000 (13:39 -0800)] 
Merge branch 'pc/submodule-helper'

Rewrite two more "git submodule" subcommands in C.

* pc/submodule-helper:
  submodule: port submodule subcommand 'deinit' from shell to C
  submodule: port submodule subcommand 'sync' from shell to C

6 years agoMerge branch 'rb/hashmap-h-compilation-fix'
Junio C Hamano [Tue, 13 Feb 2018 21:39:10 +0000 (13:39 -0800)] 
Merge branch 'rb/hashmap-h-compilation-fix'

Code clean-up.

* rb/hashmap-h-compilation-fix:
  hashmap.h: remove unused variable

6 years agoMerge branch 'nd/diff-flush-before-warning'
Junio C Hamano [Tue, 13 Feb 2018 21:39:09 +0000 (13:39 -0800)] 
Merge branch 'nd/diff-flush-before-warning'

Avoid showing a warning message in the middle of a line of "git
diff" output.

* nd/diff-flush-before-warning:
  diff.c: flush stdout before printing rename warnings

6 years agoMerge branch 'tb/crlf-conv-flags'
Junio C Hamano [Tue, 13 Feb 2018 21:39:08 +0000 (13:39 -0800)] 
Merge branch 'tb/crlf-conv-flags'

Code clean-up.

* tb/crlf-conv-flags:
  convert_to_git(): safe_crlf/checksafe becomes int conv_flags

6 years agoMerge branch 'rs/describe-unique-abbrev'
Junio C Hamano [Tue, 13 Feb 2018 21:39:07 +0000 (13:39 -0800)] 
Merge branch 'rs/describe-unique-abbrev'

Code clean-up.

* rs/describe-unique-abbrev:
  describe: use strbuf_add_unique_abbrev() for adding short hashes

6 years agoMerge branch 'ks/submodule-doc-updates'
Junio C Hamano [Tue, 13 Feb 2018 21:39:07 +0000 (13:39 -0800)] 
Merge branch 'ks/submodule-doc-updates'

Doc updates.

* ks/submodule-doc-updates:
  Doc/git-submodule: improve readability and grammar of a sentence
  Doc/gitsubmodules: make some changes to improve readability and syntax

6 years agoMerge branch 'cl/t9001-cleanup'
Junio C Hamano [Tue, 13 Feb 2018 21:39:07 +0000 (13:39 -0800)] 
Merge branch 'cl/t9001-cleanup'

Test clean-up.

* cl/t9001-cleanup:
  t9001: use existing helper in send-email test

6 years agoMerge branch 'gs/retire-mru'
Junio C Hamano [Tue, 13 Feb 2018 21:39:06 +0000 (13:39 -0800)] 
Merge branch 'gs/retire-mru'

Retire mru API as it does not give enough abstraction over
underlying list API to be worth it.

* gs/retire-mru:
  mru: Replace mru.[ch] with list.h implementation

6 years agoMerge branch 'ot/mru-on-list'
Junio C Hamano [Tue, 13 Feb 2018 21:39:05 +0000 (13:39 -0800)] 
Merge branch 'ot/mru-on-list'

The first step to getting rid of mru API and using the
doubly-linked list API directly instead.

* ot/mru-on-list:
  mru: use double-linked list from list.h

6 years agoMerge branch 'jh/partial-clone'
Junio C Hamano [Tue, 13 Feb 2018 21:39:04 +0000 (13:39 -0800)] 
Merge branch 'jh/partial-clone'

The machinery to clone & fetch, which in turn involves packing and
unpacking objects, have been told how to omit certain objects using
the filtering mechanism introduced by the jh/object-filtering
topic, and also mark the resulting pack as a promisor pack to
tolerate missing objects, taking advantage of the mechanism
introduced by the jh/fsck-promisors topic.

* jh/partial-clone:
  t5616: test bulk prefetch after partial fetch
  fetch: inherit filter-spec from partial clone
  t5616: end-to-end tests for partial clone
  fetch-pack: restore save_commit_buffer after use
  unpack-trees: batch fetching of missing blobs
  clone: partial clone
  partial-clone: define partial clone settings in config
  fetch: support filters
  fetch: refactor calculation of remote list
  fetch-pack: test support excluding large blobs
  fetch-pack: add --no-filter
  fetch-pack, index-pack, transport: partial clone
  upload-pack: add object filtering for partial clone

6 years agoMerge branch 'jh/fsck-promisors'
Junio C Hamano [Tue, 13 Feb 2018 21:39:03 +0000 (13:39 -0800)] 
Merge branch 'jh/fsck-promisors'

In preparation for implementing narrow/partial clone, the machinery
for checking object connectivity used by gc and fsck has been
taught that a missing object is OK when it is referenced by a
packfile specially marked as coming from trusted repository that
promises to make them available on-demand and lazily.

* jh/fsck-promisors:
  gc: do not repack promisor packfiles
  rev-list: support termination at promisor objects
  sha1_file: support lazily fetching missing objects
  introduce fetch-object: fetch one promisor object
  index-pack: refactor writing of .keep files
  fsck: support promisor objects as CLI argument
  fsck: support referenced promisor objects
  fsck: support refs pointing to promisor objects
  fsck: introduce partialclone extension
  extension.partialclone: introduce partial clone extension

6 years agoMerge branch 'ab/simplify-perl-makefile'
Junio C Hamano [Tue, 13 Feb 2018 21:39:03 +0000 (13:39 -0800)] 
Merge branch 'ab/simplify-perl-makefile'

The build procedure for perl/ part has been greatly simplified by
weaning ourselves off of MakeMaker.

* ab/simplify-perl-makefile:
  perl: treat PERLLIB_EXTRA as an extra path again
  perl: avoid *.pmc and fix Error.pm further
  Makefile: replace perl/Makefile.PL with simple make rules

6 years agoMark messages for translations
Alexander Shopov [Tue, 13 Feb 2018 13:19:15 +0000 (14:19 +0100)] 
Mark messages for translations

Small changes in messages to fit the style and typography of rest.
Reuse already translated messages if possible.
Do not translate messages aimed at developers of git.
Fix unit tests depending on the original string.
Use `test_i18ngrep` for tests with translatable strings.
Change and verify rest of tests via `make GETTEXT_POISON=1 test`.

Signed-off-by: Alexander Shopov <ash@kambanaria.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
6 years agodocs/interpret-trailers: fix agreement error
brian m. carlson [Tue, 13 Feb 2018 02:23:52 +0000 (02:23 +0000)] 
docs/interpret-trailers: fix agreement error

In the description of git interpret-trailers, we describe "a group…of
lines" that have certain characteristics.  Ensure both options
describing this group use a singular verb for parallelism.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
6 years agocheck-ignore: fix mix of directories and other file types
René Scharfe [Sat, 10 Feb 2018 12:38:29 +0000 (13:38 +0100)] 
check-ignore: fix mix of directories and other file types

In check_ignore(), the first pathspec item determines the dtype for any
subsequent ones.  That means that a pathspec matching a regular file can
prevent following pathspecs from matching directories, which makes no
sense.  Fix that by determining the dtype for each pathspec separately,
by passing the value DT_UNKNOWN to last_exclude_matching() each time.

Signed-off-by: Rene Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
6 years agodescribe: confirm that blobs actually exist
Jeff King [Mon, 12 Feb 2018 17:23:06 +0000 (12:23 -0500)] 
describe: confirm that blobs actually exist

Prior to 644eb60bd0 (builtin/describe.c: describe a blob,
2017-11-15), we noticed and complained about missing
objects, since they were not valid commits:

  $ git describe 0000000000000000000000000000000000000000
  fatal: 0000000000000000000000000000000000000000 is not a valid 'commit' object

After that commit, we feed any non-commit to lookup_blob(),
and complain only if it returns NULL. But the lookup_*
functions do not actually look at the on-disk object
database at all. They return an entry from the in-memory
object hash if present (and if it matches the requested
type), and otherwise auto-create a "struct object" of the
requested type.

A missing object would hit that latter case: we create a
bogus blob struct, walk all of history looking for it, and
then exit successfully having produced no output.

One reason nobody may have noticed this is that some related
cases do still work OK:

  1. If we ask for a tree by sha1, then the call to
     lookup_commit_referecne_gently() would have parsed it,
     and we would have its true type in the in-memory object
     hash.

  2. If we ask for a name that doesn't exist but isn't a
     40-hex sha1, then get_oid() would complain before we
     even look at the objects at all.

We can fix this by replacing the lookup_blob() call with a
check of the true type via sha1_object_info(). This is not
quite as efficient as we could possibly make this check. We
know in most cases that the object was already parsed in the
earlier commit lookup, so we could call lookup_object(),
which does auto-create, and check the resulting struct's
type (or NULL).  However it's not worth the fragility nor
code complexity to save a single object lookup.

The new tests cover this case, as well as that of a
tree-by-sha1 (which does work as described above, but was
not explicitly tested).

Noticed-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Jeff King <peff@peff.net>
Acked-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
6 years agoMakefile: suppress a sparse warning for pack-revindex.c
Ramsay Jones [Mon, 12 Feb 2018 00:21:02 +0000 (00:21 +0000)] 
Makefile: suppress a sparse warning for pack-revindex.c

Sparse has, for a long time, been issuing the following warning against
the pack-revindex.c file:

      SP pack-revindex.c
  pack-revindex.c:64:23: warning: memset with byte count of 262144

This results from a unconditional check, with a hard-coded limit, which
is really only appropriate for the kernel source code. (The check is for
a 'large' byte count in a call to memcpy(), memset(), copy_from_user()
and copy_to_user() functions).

A recent release of sparse (v0.5.1) has introduced some options to allow
this check to be turned off (-Wno-memcpy-max-count) or to specify the
actual limit used (-fmemcpy-max-count=COUNT), rather than a hard-coded
limit of 100000.

In order to suppress the warning, add a target for pack-revindex.sp that
adds the '-Wno-memcpy-max-count' option to the SPARSE_FLAGS variable.

Signed-off-by: Ramsay Jones <ramsay@ramsayjones.plus.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>