Commit Graph

57951 Commits

Author SHA1 Message Date
Junio C Hamano
c0c6a74594 Merge branch 'rs/xdiff-ignore-ws-w-func-context'
Extend test coverage for a recent fix.

* rs/xdiff-ignore-ws-w-func-context:
  t4015: improve coverage of function context test
2019-12-25 11:22:01 -08:00
Junio C Hamano
45b96a6fa1 Merge branch 'js/add-p-in-c'
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
2019-12-25 11:22:01 -08:00
Junio C Hamano
ccc292e862 Merge branch 'jc/drop-gen-hdrs'
Code cleanup.

* jc/drop-gen-hdrs:
  Makefile: drop GEN_HDRS
2019-12-25 11:22:00 -08:00
Junio C Hamano
dfee504bee Merge branch 'ja/doc-markup-cleanup'
Doc cleanup.

* ja/doc-markup-cleanup:
  doc: indent multi-line items in list
  doc: remove non pure ASCII characters
2019-12-25 11:22:00 -08:00
Junio C Hamano
87cbb1ca66 Merge branch 'rs/ref-read-cleanup'
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
2019-12-25 11:22:00 -08:00
Junio C Hamano
20aa6d88b7 Merge branch 'rb/p4-lfs'
"git p4" used to ignore lfs.storage configuration variable, which
has been corrected.

* rb/p4-lfs:
  git-p4: honor lfs.storage configuration variable
2019-12-25 11:22:00 -08:00
Junio C Hamano
fcd5b55f56 Merge branch 'pb/submodule-doc-xref'
Doc update.

* pb/submodule-doc-xref:
  gitmodules: link to gitsubmodules guide
2019-12-25 11:21:59 -08:00
Junio C Hamano
4bfc9ccfb6 Merge branch 'mr/bisect-use-after-free'
Use-after-free fix.

* mr/bisect-use-after-free:
  bisect--helper: avoid use-after-free
2019-12-25 11:21:59 -08:00
Junio C Hamano
ba6b66281e Merge branch 'ln/userdiff-elixir'
Hotfix.

* ln/userdiff-elixir:
  userdiff: remove empty subexpression from elixir regex
2019-12-25 11:21:59 -08:00
Junio C Hamano
bd72a08d6c Merge branch 'ds/sparse-cone'
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
  ...
2019-12-25 11:21:58 -08:00
Junio C Hamano
f3c520e17f Merge branch 'sg/name-rev-wo-recursion'
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
2019-12-25 11:21:58 -08:00
Junio C Hamano
6514ad40a1 Merge branch 'ra/t5150-depends-on-perl'
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
2019-12-25 11:21:58 -08:00
Junio C Hamano
17066bea38 Merge branch 'dl/format-patch-notes-config-fixup'
"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()
2019-12-25 11:21:58 -08:00
Junio C Hamano
135365dd99 Merge branch 'am/pathspec-f-f-checkout'
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
2019-12-25 11:21:57 -08:00
Junio C Hamano
ff0cb70d45 Merge branch 'am/pathspec-from-file'
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
2019-12-25 11:21:57 -08:00
Ed Maste
761e3d26bb sparse-checkout: improve OS ls compatibility
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>
2019-12-20 12:47:08 -08:00
René Scharfe
124a895811 t4015: improve coverage of function context test
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>
2019-12-19 10:35:21 -08:00
Alexandr Miloslavskiy
509efef789 commit: forbid --pathspec-from-file --all
I forgot this in my previous patch `--pathspec-from-file` for
`git commit` [1]. When both `--pathspec-from-file` and `--all` were
specified, `--all` took precedence and `--pathspec-from-file` was
ignored. Before `--pathspec-from-file` was implemented, this case was
prevented by this check in `parse_and_validate_options()` :

    die(_("paths '%s ...' with -a does not make sense"), argv[0]);

It is unfortunate that these two cases are disconnected. This came as
result of how the code was laid out before my patches, where `pathspec`
is parsed outside of `parse_and_validate_options()`. This branch is
already full of refactoring patches and I did not dare to go for another
one.

Fix by mirroring `die()` for `--pathspec-from-file` as well.

[1] Commit e440fc58 ("commit: support the --pathspec-from-file option" 2019-11-19)

Reported-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Alexandr Miloslavskiy <alexandr.miloslavskiy@syntevo.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-12-18 14:14:14 -08:00
Elijah Newren
12029dc57d t3434: mark successful test as such
t3434.3 was fixed by commit 917d0d6234 ("Merge branch
'js/rebase-r-safer-label'", 2019-12-05).  t3434 did not exist in
js/rebase-r-safer-label, so could not have marked the test as fixed, and
it was probably not noticed that the merge fixed this test.  Mark it as
fixed now.

Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-12-18 13:06:14 -08:00
Denton Liu
e0f9095aaa notes.h: fix typos in comment
In 1d7297513d (notes: break set_display_notes() into smaller functions,
2019-12-11), we introduced a comment which had a couple of typos. In the
first typo, we referenced 'enable_default_display_notes' instead of
'enable_ref_display_notes'. In the second typo, we wrote "is a points to"
instead of "is a pointer to". Correct both of these typos.

Reported-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Denton Liu <liu.denton@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-12-18 12:35:35 -08:00
Junio C Hamano
b02fd2acca The sixth batch
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-12-16 13:15:43 -08:00
Junio C Hamano
59d0b3be45 Merge branch 'rs/patch-id-use-oid-to-hex'
Code cleanup.

* rs/patch-id-use-oid-to-hex:
  patch-id: use oid_to_hex() to print multiple object IDs
2019-12-16 13:14:48 -08:00
Junio C Hamano
e3b72391d1 Merge branch 'rs/commit-export-env-simplify'
Code cleanup.

* rs/commit-export-env-simplify:
  commit: use strbuf_add() to add a length-limited string
2019-12-16 13:14:47 -08:00
Junio C Hamano
43bf44e23a Merge branch 'rs/archive-zip-code-cleanup'
Code cleanup.

* rs/archive-zip-code-cleanup:
  archive-zip: use enum for compression method
2019-12-16 13:14:47 -08:00
Junio C Hamano
4438a1a59f Merge branch 'js/t3404-indent-fix'
Test cleanup.

* js/t3404-indent-fix:
  t3404: fix indentation
2019-12-16 13:14:47 -08:00
Junio C Hamano
3a44db2ed2 Merge branch 'dr/branch-usage-casefix'
Message fix.

* dr/branch-usage-casefix:
  l10n: minor case fix in 'git branch' '--unset-upstream' description
2019-12-16 13:14:46 -08:00
Junio C Hamano
8bc481f4f6 Merge branch 'sg/t9300-robustify'
The test on "fast-import" used to get stuck when "fast-import" died
in the middle.

* sg/t9300-robustify:
  t9300-fast-import: don't hang if background fast-import exits too early
  t9300-fast-import: store the PID in a variable instead of pidfile
2019-12-16 13:08:47 -08:00
Junio C Hamano
011fc2e88e Merge branch 'js/add-i-a-bit-more-tests'
Test coverage update in preparation for further work on "git add -i".

* js/add-i-a-bit-more-tests:
  apply --allow-overlap: fix a corner case
  git add -p: use non-zero exit code when the diff generation failed
  t3701: verify that the diff.algorithm config setting is handled
  t3701: verify the shown messages when nothing can be added
  t3701: add a test for the different `add -p` prompts
  t3701: avoid depending on the TTY prerequisite
  t3701: add a test for advanced split-hunk editing
2019-12-16 13:08:47 -08:00
Junio C Hamano
d1c0fe8d9b Merge branch 'dl/range-diff-with-notes'
Code clean-up.

* dl/range-diff-with-notes:
  range-diff: clear `other_arg` at end of function
  range-diff: mark pointers as const
  t3206: fix incorrect test name
2019-12-16 13:08:46 -08:00
Junio C Hamano
26c816a67d Merge branch 'hw/doc-in-header'
* hw/doc-in-header:
  trace2: move doc to trace2.h
  submodule-config: move doc to submodule-config.h
  tree-walk: move doc to tree-walk.h
  trace: move doc to trace.h
  run-command: move doc to run-command.h
  parse-options: add link to doc file in parse-options.h
  credential: move doc to credential.h
  argv-array: move doc to argv-array.h
  cache: move doc to cache.h
  sigchain: move doc to sigchain.h
  pathspec: move doc to pathspec.h
  revision: move doc to revision.h
  attr: move doc to attr.h
  refs: move doc to refs.h
  remote: move doc to remote.h and refspec.h
  sha1-array: move doc to sha1-array.h
  merge: move doc to ll-merge.h
  graph: move doc to graph.h and graph.c
  dir: move doc to dir.h
  diff: move doc to diff.h and diffcore.h
2019-12-16 13:08:39 -08:00
Junio C Hamano
f0070a7df9 Merge branch 'rs/xdiff-ignore-ws-w-func-context'
The "diff" machinery learned not to lose added/removed blank lines
in the context when --ignore-blank-lines and --function-context are
used at the same time.

* rs/xdiff-ignore-ws-w-func-context:
  xdiff: unignore changes in function context
2019-12-16 13:08:32 -08:00
Junio C Hamano
71a7de7a99 Merge branch 'dl/rebase-with-autobase'
"git rebase" did not work well when format.useAutoBase
configuration variable is set, which has been corrected.

* dl/rebase-with-autobase:
  rebase: fix format.useAutoBase breakage
  format-patch: teach --no-base
  t4014: use test_config()
  format-patch: fix indentation
  t3400: demonstrate failure with format.useAutoBase
2019-12-16 13:08:32 -08:00
Junio C Hamano
c9f5fc9114 Merge branch 'dl/test-cleanup'
Test cleanup.

* dl/test-cleanup: (26 commits)
  t7700: stop losing return codes of git commands
  t7700: make references to SHA-1 generic
  t7700: replace egrep with grep
  t7700: consolidate code into test_has_duplicate_object()
  t7700: consolidate code into test_no_missing_in_packs()
  t7700: s/test -f/test_path_is_file/
  t7700: move keywords onto their own line
  t7700: remove spaces after redirect operators
  t7700: drop redirections to /dev/null
  t7501: stop losing return codes of git commands
  t7501: remove spaces after redirect operators
  t5703: stop losing return codes of git commands
  t5703: simplify one-time-sed generation logic
  t5317: use ! grep to check for no matching lines
  t5317: stop losing return codes of git commands
  t4138: stop losing return codes of git commands
  t4015: use test_write_lines()
  t4015: stop losing return codes of git commands
  t3600: comment on inducing SIGPIPE in `git rm`
  t3600: stop losing return codes of git commands
  ...
2019-12-16 13:08:32 -08:00
Junio C Hamano
6d831b8a3e Merge branch 'cs/store-packfiles-in-hashmap'
In a repository with many packfiles, the cost of the procedure that
avoids registering the same packfile twice was unnecessarily high
by using an inefficient search algorithm, which has been corrected.

* cs/store-packfiles-in-hashmap:
  packfile.c: speed up loading lots of packfiles
2019-12-16 13:08:32 -08:00
Junio C Hamano
3beff388b2 Merge branch 'js/builtin-add-i-cmds'
"git add -i" that is getting rewritten in C has been extended to
cover subcommands other than the "patch".

* js/builtin-add-i-cmds:
  built-in add -i: offer the `quit` command
  built-in add -i: re-implement the `diff` command
  built-in add -i: implement the `patch` command
  built-in add -i: re-implement `add-untracked` in C
  built-in add -i: re-implement `revert` in C
  built-in add -i: implement the `update` command
  built-in add -i: prepare for multi-selection commands
  built-in add -i: allow filtering the modified files list
  add-interactive: make sure to release `rev.prune_data`
2019-12-16 13:08:31 -08:00
Junio C Hamano
4755a34c47 Merge branch 'dd/time-reentrancy'
Avoid gmtime() and localtime() and prefer their reentrant
counterparts.

* dd/time-reentrancy:
  mingw: use {gm,local}time_s as backend for {gm,local}time_r
  archive-zip.c: switch to reentrant localtime_r
  date.c: switch to reentrant {gm,local}time_r
2019-12-16 13:08:31 -08:00
Junio C Hamano
37c2619d91 Merge branch 'ag/sequencer-todo-updates'
Reduce unnecessary reading of state variables back from the disk
during sequencer operation.

* ag/sequencer-todo-updates:
  sequencer: directly call pick_commits() from complete_action()
  rebase: fill `squash_onto' in get_replay_opts()
  sequencer: move the code writing total_nr on the disk to a new function
  sequencer: update `done_nr' when skipping commands in a todo list
  sequencer: update `total_nr' when adding an item to a todo list
2019-12-16 13:08:31 -08:00
ryenus
571fb96573 fix-typo: consecutive-word duplications
Correct unintentional duplication(s) of words, such as "the the",
and "can can" etc.

The changes are only applied to cases where it's fixing what is clearly
wrong or prone to misunderstanding, as suggested by the reviewers.

Helped-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Helped-by: Denton Liu <liu.denton@gmail.com>
Helped-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: ryenus <ryenus@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-12-16 11:53:11 -08:00
Junio C Hamano
f371984613 Makefile: drop GEN_HDRS
When ebb7baf0 ("Makefile: add a hdr-check target", 2018-09-19)
implemented hdr-check target, it wanted to leave some header files
exempt from the stricter check the target implements, and added
GEN_HDRS macro.

This however is probably a bad move for two reasons:

 - If we value the header cleanliness check, we eventually want to
   teach our header generating scripts to produce clean headers.
   Keeping the blanket "generated headers can be left as dirty as we
   want" exception does not nudge us in the right direction.

 - There is a list of generated header files, GENERATED_H, which is
   used to keep track of dependencies.  Presence of GEN_HDRS that is
   too similarly named would confuse developers who are adding new
   generated header files which list to add theirs.

 - Even though unicode-width.h could be generated using a contrib/
   script, as far as our build infrastructure is concerned, it is a
   source file that is tracked in the source control system.  Its
   presence in GEN_HDRS list is doubly misleading.

Get rid of GEN_HDRS, which is used only once to list the headers we
do not run hdr-check test on, and instead explicitly list that the
ones, either tracked or generated, that we exempt from the test.

This allows GENERATED_H to be the sole "here are build artifact
header files that are expendable" list, so use it in the clean
target to $(RM) them.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-12-13 15:15:34 -08:00
Johannes Schindelin
2e4083198d built-in add -p: show helpful hint when nothing can be staged
This patch will make `git add -p` show "No changes." or "Only binary
files changed." in that case.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-12-13 12:37:14 -08:00
Johannes Schindelin
54d9d9b2ee built-in add -p: only show the applicable parts of the help text
When displaying the only hunk in a file's diff, the prompt already
excludes the commands to navigate to the previous/next hunk.

Let's also let the `?` command show only the help lines corresponding to
the commands that are displayed in the prompt.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-12-13 12:37:14 -08:00
Johannes Schindelin
ade246efed built-in add -p: implement the 'q' ("quit") command
This command is actually very similar to the 'd' ("do not stage this
hunk or any of the later hunks in the file") command: it just does
something on top, namely leave the loop and return a value indicating
that we're quittin'.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-12-13 12:37:14 -08:00
Johannes Schindelin
d6cf873340 built-in add -p: implement the '/' ("search regex") command
This patch implements the hunk searching feature in the C version of
`git add -p`.

A test is added to verify that this behavior matches the one of the Perl
version of `git add -p`.

Note that this involves a change of behavior: the Perl version uses (of
course) the Perl flavor of regular expressions, while this patch uses
the regcomp()/regexec(), i.e. POSIX extended regular expressions. In
practice, this behavior change is unlikely to matter.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-12-13 12:37:14 -08:00
Johannes Schindelin
9254bdfb4f built-in add -p: implement the 'g' ("goto") command
With this patch, it is now possible to see a summary of the available
hunks and to navigate between them (by number).

A test is added to verify that this behavior matches the one of the Perl
version of `git add -p`.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-12-13 12:37:14 -08:00
Johannes Schindelin
bcdd297b78 built-in add -p: implement hunk editing
Just like `git add --edit` allows the user to edit the diff before it is
being applied to the index, this feature allows the user to edit the
diff *hunk*.

Naturally, it gets a bit more complicated here because the result has
to play well with the remaining hunks of the overall diff. Therefore,
we have to do a loop in which we let the user edit the hunk, then test
whether the result would work, and if not, drop the edits and let the
user decide whether to try editing the hunk again.

Note: in contrast to the Perl version, we use the same diff
"coalescing" (i.e. merging overlapping hunks into a single one) also for
the check after editing, and we introduce a new flag for that purpose
that asks the `reassemble_patch()` function to pretend that all hunks
were selected for use.

This allows us to continue to run `git apply` *without* the
`--allow-overlap` option (unlike the Perl version), and it also fixes
two known breakages in `t3701-add-interactive.sh` (which we cannot mark
as resolved so far because the Perl script version is still the default
and continues to have those breakages).

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-12-13 12:37:14 -08:00
Johannes Schindelin
b38dd9e715 strbuf: add a helper function to call the editor "on an strbuf"
This helper supports the scenario where Git has a populated `strbuf` and
wants to let the user edit it interactively.

In `git add -p`, we will use this to allow interactive hunk editing: the
diff hunks are already in memory, but we need to write them out to a
file so that an editor can be launched, then read everything back once
the user is done editing.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-12-13 12:37:14 -08:00
Johannes Schindelin
11f2c0dae8 built-in add -p: coalesce hunks after splitting them
This is considered "the right thing to do", according to 933e44d3a0
("add -p": work-around an old laziness that does not coalesce hunks,
2011-04-06).

Note: we cannot simply modify the hunks while merging them; Once we
implement hunk editing, we will call `reassemble_patch()` whenever a
hunk is edited, therefore we must not modify the hunks (because the user
might e.g. hit `K` and change their mind whether to stage the previous
hunk).

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-12-13 12:37:14 -08:00
Johannes Schindelin
510aeca199 built-in add -p: implement the hunk splitting feature
If this developer's workflow is any indication, then this is *the* most
useful feature of Git's interactive `add `command.

Note: once again, this is not a verbatim conversion from the Perl code
to C: the `hunk_splittable()` function, for example, essentially did all
the work of splitting the hunk, just to find out whether more than one
hunk would have been the result (and then tossed that result into the
trash). In C we instead count the number of resulting hunks (without
actually doing the work of splitting, but just counting the transitions
from non-context lines to context lines), and store that information
with the hunk, and we do that *while* parsing the diff in the first
place.

Another deviation: the built-in `git add -p` was designed with a single
strbuf holding the diff (and another one holding the colored diff, if
that one was asked for) in mind, and hunks essentially store just the
start and end offsets pointing into that strbuf. As a consequence, when
we split hunks, we now use a special mode where the hunk header is
generated dynamically, and only the rest of the hunk is stored using
such start/end offsets. This way, we also avoid the frequent
formatting/re-parsing of the hunk header of the Perl version.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-12-13 12:37:14 -08:00
Johannes Schindelin
0ecd9d27fc built-in add -p: show different prompts for mode changes and deletions
Just like the Perl version, we now helpfully ask the user whether they
want to stage a mode change, or a deletion.

Note that we define the prompts in an array, in preparation for a later
patch that changes those prompts to yet different versions for `git
reset -p`, `git stash -p` and `git checkout -p` (which all call the `git
add -p` machinery to do the actual work).

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-12-13 12:37:14 -08:00
Johannes Schindelin
5906d5de77 built-in app -p: allow selecting a mode change as a "hunk"
This imitates the way the Perl version treats mode changes: it offers
the mode change up for the user to decide, as if it was a diff hunk.

In contrast to the Perl version, we make use of the fact that the mode
line is the first hunk, and explicitly strip out that line from the diff
header if that "hunk" was not selected to be applied, and skipping that
hunk while coalescing the diff. The Perl version plays some kind of diff
line lego instead.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-12-13 12:37:14 -08:00