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Merge branch 'so/log-diff-merge'

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"git log" learned a new "--diff-merges=<how>" option.

* so/log-diff-merge: (32 commits)
  t4013: add tests for --diff-merges=first-parent
  doc/git-show: include --diff-merges description
  doc/rev-list-options: document --first-parent changes merges format
  doc/diff-generate-patch: mention new --diff-merges option
  doc/git-log: describe new --diff-merges options
  diff-merges: add '--diff-merges=1' as synonym for 'first-parent'
  diff-merges: add old mnemonic counterparts to --diff-merges
  diff-merges: let new options enable diff without -p
  diff-merges: do not imply -p for new options
  diff-merges: implement new values for --diff-merges
  diff-merges: make -m/-c/--cc explicitly mutually exclusive
  diff-merges: refactor opt settings into separate functions
  diff-merges: get rid of now empty diff_merges_init_revs()
  diff-merges: group diff-merge flags next to each other inside 'rev_info'
  diff-merges: split 'ignore_merges' field
  diff-merges: fix -m to properly override -c/--cc
  t4013: add tests for -m failing to override -c/--cc
  t4013: support test_expect_failure through ':failure' magic
  diff-merges: revise revs->diff flag handling
  diff-merges: handle imply -p on -c/--cc logic for log.c
  ...
This commit is contained in:
Junio C Hamano 2021-02-05 16:40:44 -08:00
commit aac006aa99
21 changed files with 893 additions and 116 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
Documentation/diff-generate-patch.txt
View File

@ -81,9 +81,9 @@ Combined diff format
Any diff-generating command can take the `-c` or `--cc` option to
produce a 'combined diff' when showing a merge. This is the default
format when showing merges with linkgit:git-diff[1] or
linkgit:git-show[1]. Note also that you can give the `-m` option to any
of these commands to force generation of diffs with individual parents
of a merge.
linkgit:git-show[1]. Note also that you can give suitable
`--diff-merges` option to any of these commands to force generation of
diffs in specific format.
A "combined diff" format looks like this:

51
Documentation/diff-options.txt
View File

@ -33,6 +33,57 @@ endif::git-diff[]
show the patch by default, or to cancel the effect of `--patch`.
endif::git-format-patch[]
ifdef::git-log[]
--diff-merges=(off|none|first-parent|1|separate|m|combined|c|dense-combined|cc)::
--no-diff-merges::
Specify diff format to be used for merge commits. Default is
{diff-merges-default} unless `--first-parent` is in use, in which case
`first-parent` is the default.
+
--diff-merges=(off|none):::
--no-diff-merges:::
Disable output of diffs for merge commits. Useful to override
implied value.
+
--diff-merges=first-parent:::
--diff-merges=1:::
This option makes merge commits show the full diff with
respect to the first parent only.
+
--diff-merges=separate:::
--diff-merges=m:::
-m:::
This makes merge commits show the full diff with respect to
each of the parents. Separate log entry and diff is generated
for each parent. `-m` doesn't produce any output without `-p`.
+
--diff-merges=combined:::
--diff-merges=c:::
-c:::
With this option, diff output for a merge commit shows the
differences from each of the parents to the merge result
simultaneously instead of showing pairwise diff between a
parent and the result one at a time. Furthermore, it lists
only files which were modified from all parents. `-c` implies
`-p`.
+
--diff-merges=dense-combined:::
--diff-merges=cc:::
--cc:::
With this option the output produced by
`--diff-merges=combined` is further compressed by omitting
uninteresting hunks whose contents in the parents have only
two variants and the merge result picks one of them without
modification. `--cc` implies `-p`.
--combined-all-paths::
This flag causes combined diffs (used for merge commits) to
list the name of the file from all parents. It thus only has
effect when `--diff-merges=[dense-]combined` is in use, and
is likely only useful if filename changes are detected (i.e.
when either rename or copy detection have been requested).
endif::git-log[]
-U<n>::
--unified=<n>::
Generate diffs with <n> lines of context instead of

46
Documentation/git-log.txt
View File

@ -107,47 +107,15 @@ DIFF FORMATTING
By default, `git log` does not generate any diff output. The options
below can be used to show the changes made by each commit.
Note that unless one of `-c`, `--cc`, or `-m` is given, merge commits
will never show a diff, even if a diff format like `--patch` is
selected, nor will they match search options like `-S`. The exception is
when `--first-parent` is in use, in which merges are treated like normal
single-parent commits (this can be overridden by providing a
combined-diff option or with `--no-diff-merges`).
-c::
With this option, diff output for a merge commit
shows the differences from each of the parents to the merge result
simultaneously instead of showing pairwise diff between a parent
and the result one at a time. Furthermore, it lists only files
which were modified from all parents.
--cc::
This flag implies the `-c` option and further compresses the
patch output by omitting uninteresting hunks whose contents in
the parents have only two variants and the merge result picks
one of them without modification.
--combined-all-paths::
This flag causes combined diffs (used for merge commits) to
list the name of the file from all parents. It thus only has
effect when -c or --cc are specified, and is likely only
useful if filename changes are detected (i.e. when either
rename or copy detection have been requested).
-m::
This flag makes the merge commits show the full diff like
regular commits; for each merge parent, a separate log entry
and diff is generated. An exception is that only diff against
the first parent is shown when `--first-parent` option is given;
in that case, the output represents the changes the merge
brought _into_ the then-current branch.
--diff-merges=off::
--no-diff-merges::
Disable output of diffs for merge commits (default). Useful to
override `-m`, `-c`, or `--cc`.
Note that unless one of `--diff-merges` variants (including short
`-m`, `-c`, and `--cc` options) is explicitly given, merge commits
will not show a diff, even if a diff format like `--patch` is
selected, nor will they match search options like `-S`. The exception
is when `--first-parent` is in use, in which case `first-parent` is
the default format.
:git-log: 1
:diff-merges-default: `off`
include::diff-options.txt[]
include::diff-generate-patch.txt[]

7
Documentation/git-show.txt
View File

@ -45,10 +45,13 @@ include::pretty-options.txt[]
include::pretty-formats.txt[]
COMMON DIFF OPTIONS
-------------------
DIFF FORMATTING
---------------
The options below can be used to change the way `git show` generates
diff output.
:git-log: 1
:diff-merges-default: `dense-combined`
include::diff-options.txt[]
include::diff-generate-patch.txt[]

5
Documentation/rev-list-options.txt
View File

@ -130,6 +130,11 @@ parents) and `--max-parents=-1` (negative numbers denote no upper limit).
this option allows you to ignore the individual commits
brought in to your history by such a merge.
ifdef::git-log[]
This option also changes default diff format for merge commits
to `first-parent`, see `--diff-merges=first-parent` for details.
endif::git-log[]
--not::
Reverses the meaning of the '{caret}' prefix (or lack thereof)
for all following revision specifiers, up to the next `--not`.

1
Makefile
View File

@ -860,6 +860,7 @@ LIB_OBJS += date.o
LIB_OBJS += decorate.o
LIB_OBJS += delta-islands.o
LIB_OBJS += diff-delta.o
LIB_OBJS += diff-merges.o
LIB_OBJS += diff-lib.o
LIB_OBJS += diff-no-index.o
LIB_OBJS += diff.o

5
builtin/diff-files.c
View File

@ -7,6 +7,7 @@
#include "cache.h"
#include "config.h"
#include "diff.h"
#include "diff-merges.h"
#include "commit.h"
#include "revision.h"
#include "builtin.h"
@ -69,9 +70,9 @@ int cmd_diff_files(int argc, const char **argv, const char *prefix)
* was not asked to. "diff-files -c -p" should not densify
* (the user should ask with "diff-files --cc" explicitly).
*/
if (rev.max_count == -1 && !rev.combine_merges &&
if (rev.max_count == -1 &&
(rev.diffopt.output_format & DIFF_FORMAT_PATCH))
rev.combine_merges = rev.dense_combined_merges = 1;
diff_merges_set_dense_combined_if_unset(&rev);
if (read_cache_preload(&rev.diffopt.pathspec) < 0) {
perror("read_cache_preload");

9
builtin/diff.c
View File

@ -13,6 +13,7 @@
#include "blob.h"
#include "tag.h"
#include "diff.h"
#include "diff-merges.h"
#include "diffcore.h"
#include "revision.h"
#include "log-tree.h"
@ -216,8 +217,8 @@ static int builtin_diff_combined(struct rev_info *revs,
if (argc > 1)
usage(builtin_diff_usage);
if (!revs->dense_combined_merges && !revs->combine_merges)
revs->dense_combined_merges = revs->combine_merges = 1;
diff_merges_set_dense_combined_if_unset(revs);
for (i = 1; i < ents; i++)
oid_array_append(&parents, &ent[i].item->oid);
diff_tree_combined(&ent[0].item->oid, &parents, revs);
@ -265,9 +266,9 @@ static int builtin_diff_files(struct rev_info *revs, int argc, const char **argv
* dense one, --cc can be explicitly asked for, or just rely
* on the default).
*/
if (revs->max_count == -1 && !revs->combine_merges &&
if (revs->max_count == -1 &&
(revs->diffopt.output_format & DIFF_FORMAT_PATCH))
revs->combine_merges = revs->dense_combined_merges = 1;
diff_merges_set_dense_combined_if_unset(revs);
setup_work_tree();
if (read_cache_preload(&revs->diffopt.pathspec) < 0) {

22
builtin/log.c
View File

@ -12,6 +12,7 @@
#include "color.h"
#include "commit.h"
#include "diff.h"
#include "diff-merges.h"
#include "revision.h"
#include "log-tree.h"
#include "builtin.h"
@ -607,15 +608,10 @@ static int show_tree_object(const struct object_id *oid,
static void show_setup_revisions_tweak(struct rev_info *rev,
struct setup_revision_opt *opt)
{
if (rev->ignore_merges < 0) {
/* There was no "-m" variant on the command line */
rev->ignore_merges = 0;
if (!rev->first_parent_only && !rev->combine_merges) {
/* No "--first-parent", "-c", or "--cc" */
rev->combine_merges = 1;
rev->dense_combined_merges = 1;
}
}
if (rev->first_parent_only)
diff_merges_default_to_first_parent(rev);
else
diff_merges_default_to_dense_combined(rev);
if (!rev->diffopt.output_format)
rev->diffopt.output_format = DIFF_FORMAT_PATCH;
}
@ -736,12 +732,8 @@ static void log_setup_revisions_tweak(struct rev_info *rev,
rev->prune_data.nr == 1)
rev->diffopt.flags.follow_renames = 1;
/* Turn --cc/-c into -p --cc/-c when -p was not given */
if (!rev->diffopt.output_format && rev->combine_merges)
rev->diffopt.output_format = DIFF_FORMAT_PATCH;
if (rev->first_parent_only && rev->ignore_merges < 0)
rev->ignore_merges = 0;
if (rev->first_parent_only)
diff_merges_default_to_first_parent(rev);
}
int cmd_log(int argc, const char **argv, const char *prefix)

3
builtin/merge.c
View File

@ -14,6 +14,7 @@
#include "lockfile.h"
#include "run-command.h"
#include "diff.h"
#include "diff-merges.h"
#include "refs.h"
#include "refspec.h"
#include "commit.h"
@ -409,7 +410,7 @@ static void squash_message(struct commit *commit, struct commit_list *remotehead
printf(_("Squash commit -- not updating HEAD\n"));
repo_init_revisions(the_repository, &rev, NULL);
rev.ignore_merges = 1;
diff_merges_suppress(&rev);
rev.commit_format = CMIT_FMT_MEDIUM;
commit->object.flags |= UNINTERESTING;

146
diff-merges.c Normal file
View File

@ -0,0 +1,146 @@
#include "diff-merges.h"
#include "revision.h"
static void suppress(struct rev_info *revs)
{
revs->separate_merges = 0;
revs->first_parent_merges = 0;
revs->combine_merges = 0;
revs->dense_combined_merges = 0;
revs->combined_all_paths = 0;
revs->combined_imply_patch = 0;
revs->merges_need_diff = 0;
}
static void set_separate(struct rev_info *revs)
{
suppress(revs);
revs->separate_merges = 1;
}
static void set_first_parent(struct rev_info *revs)
{
set_separate(revs);
revs->first_parent_merges = 1;
}
static void set_m(struct rev_info *revs)
{
/*
* To "diff-index", "-m" means "match missing", and to the "log"
* family of commands, it means "show full diff for merges". Set
* both fields appropriately.
*/
set_separate(revs);
revs->match_missing = 1;
}
static void set_combined(struct rev_info *revs)
{
suppress(revs);
revs->combine_merges = 1;
revs->dense_combined_merges = 0;
}
static void set_dense_combined(struct rev_info *revs)
{
suppress(revs);
revs->combine_merges = 1;
revs->dense_combined_merges = 1;
}
static void set_diff_merges(struct rev_info *revs, const char *optarg)
{
if (!strcmp(optarg, "off") || !strcmp(optarg, "none")) {
suppress(revs);
/* Return early to leave revs->merges_need_diff unset */
return;
}
if (!strcmp(optarg, "1") || !strcmp(optarg, "first-parent"))
set_first_parent(revs);
else if (!strcmp(optarg, "m") || !strcmp(optarg, "separate"))
set_separate(revs);
else if (!strcmp(optarg, "c") || !strcmp(optarg, "combined"))
set_combined(revs);
else if (!strcmp(optarg, "cc") || !strcmp(optarg, "dense-combined"))
set_dense_combined(revs);
else
die(_("unknown value for --diff-merges: %s"), optarg);
/* The flag is cleared by set_xxx() functions, so don't move this up */
revs->merges_need_diff = 1;
}
/*
* Public functions. They are in the order they are called.
*/
int diff_merges_parse_opts(struct rev_info *revs, const char **argv)
{
int argcount = 1;
const char *optarg;
const char *arg = argv[0];
if (!strcmp(arg, "-m")) {
set_m(revs);
} else if (!strcmp(arg, "-c")) {
set_combined(revs);
revs->combined_imply_patch = 1;
} else if (!strcmp(arg, "--cc")) {
set_dense_combined(revs);
revs->combined_imply_patch = 1;
} else if (!strcmp(arg, "--no-diff-merges")) {
suppress(revs);
} else if (!strcmp(arg, "--combined-all-paths")) {
revs->combined_all_paths = 1;
} else if ((argcount = parse_long_opt("diff-merges", argv, &optarg))) {
set_diff_merges(revs, optarg);
} else
return 0;
revs->explicit_diff_merges = 1;
return argcount;
}
void diff_merges_suppress(struct rev_info *revs)
{
suppress(revs);
}
void diff_merges_default_to_first_parent(struct rev_info *revs)
{
if (!revs->explicit_diff_merges)
revs->separate_merges = 1;
if (revs->separate_merges)
revs->first_parent_merges = 1;
}
void diff_merges_default_to_dense_combined(struct rev_info *revs)
{
if (!revs->explicit_diff_merges)
set_dense_combined(revs);
}
void diff_merges_set_dense_combined_if_unset(struct rev_info *revs)
{
if (!revs->combine_merges)
set_dense_combined(revs);
}
void diff_merges_setup_revs(struct rev_info *revs)
{
if (revs->combine_merges == 0)
revs->dense_combined_merges = 0;
if (revs->separate_merges == 0)
revs->first_parent_merges = 0;
if (revs->combined_all_paths && !revs->combine_merges)
die("--combined-all-paths makes no sense without -c or --cc");
if (revs->combined_imply_patch)
revs->diff = 1;
if (revs->combined_imply_patch || revs->merges_need_diff) {
if (!revs->diffopt.output_format)
revs->diffopt.output_format = DIFF_FORMAT_PATCH;
}
}

24
diff-merges.h Normal file
View File

@ -0,0 +1,24 @@
#ifndef DIFF_MERGES_H
#define DIFF_MERGES_H
/*
* diff-merges - utility module to handle command-line options for
* selection of particular diff format of merge commits
* representation.
*/
struct rev_info;
int diff_merges_parse_opts(struct rev_info *revs, const char **argv);
void diff_merges_suppress(struct rev_info *revs);
void diff_merges_default_to_first_parent(struct rev_info *revs);
void diff_merges_default_to_dense_combined(struct rev_info *revs);
void diff_merges_set_dense_combined_if_unset(struct rev_info *revs);
void diff_merges_setup_revs(struct rev_info *revs);
#endif

3
fmt-merge-msg.c
View File

@ -2,6 +2,7 @@
#include "refs.h"
#include "object-store.h"
#include "diff.h"
#include "diff-merges.h"
#include "revision.h"
#include "tag.h"
#include "string-list.h"
@ -670,7 +671,7 @@ int fmt_merge_msg(struct strbuf *in, struct strbuf *out,
head = lookup_commit_or_die(&head_oid, "HEAD");
repo_init_revisions(the_repository, &rev, NULL);
rev.commit_format = CMIT_FMT_ONELINE;
rev.ignore_merges = 1;
diff_merges_suppress(&rev);
rev.limited = 1;
strbuf_complete_line(out);

30
log-tree.c
View File

@ -899,15 +899,21 @@ static int log_tree_diff(struct rev_info *opt, struct commit *commit, struct log
int showed_log;
struct commit_list *parents;
struct object_id *oid;
int is_merge;
int all_need_diff = opt->diff || opt->diffopt.flags.exit_with_status;
if (!opt->diff && !opt->diffopt.flags.exit_with_status)
if (!all_need_diff && !opt->merges_need_diff)
return 0;
parse_commit_or_die(commit);
oid = get_commit_tree_oid(commit);
/* Root commit? */
parents = get_saved_parents(opt, commit);
is_merge = parents && parents->next;
if (!is_merge && !all_need_diff)
return 0;
/* Root commit? */
if (!parents) {
if (opt->show_root_diff) {
diff_root_tree_oid(oid, "", &opt->diffopt);
@ -916,16 +922,16 @@ static int log_tree_diff(struct rev_info *opt, struct commit *commit, struct log
return !opt->loginfo;
}
/* More than one parent? */
if (parents->next) {
if (opt->ignore_merges)
return 0;
else if (opt->combine_merges)
if (is_merge) {
if (opt->combine_merges)
return do_diff_combined(opt, commit);
else if (!opt->first_parent_only) {
/* If we show multiple diffs, show the parent info */
log->parent = parents->item;
}
if (opt->separate_merges) {
if (!opt->first_parent_merges) {
/* Show parent info for multiple diffs */
log->parent = parents->item;
}
} else
return 0;
}
showed_log = 0;
@ -941,7 +947,7 @@ static int log_tree_diff(struct rev_info *opt, struct commit *commit, struct log
/* Set up the log info for the next parent, if any.. */
parents = parents->next;
if (!parents || opt->first_parent_only)
if (!parents || opt->first_parent_merges)
break;
log->parent = parents->item;
opt->loginfo = log;

38
revision.c
View File

@ -5,6 +5,7 @@
#include "tree.h"
#include "commit.h"
#include "diff.h"
#include "diff-merges.h"
#include "refs.h"
#include "revision.h"
#include "repository.h"
@ -1808,7 +1809,6 @@ void repo_init_revisions(struct repository *r,
revs->repo = r;
revs->abbrev = DEFAULT_ABBREV;
revs->ignore_merges = -1;
revs->simplify_history = 1;
revs->pruning.repo = r;
revs->pruning.flags.recursive = 1;
@ -2343,34 +2343,8 @@ static int handle_revision_opt(struct rev_info *revs, int argc, const char **arg
revs->diff = 1;
revs->diffopt.flags.recursive = 1;
revs->diffopt.flags.tree_in_recursive = 1;
} else if (!strcmp(arg, "-m")) {
/*
* To "diff-index", "-m" means "match missing", and to the "log"
* family of commands, it means "show full diff for merges". Set
* both fields appropriately.
*/
revs->ignore_merges = 0;
revs->match_missing = 1;
} else if ((argcount = parse_long_opt("diff-merges", argv, &optarg))) {
if (!strcmp(optarg, "off")) {
revs->ignore_merges = 1;
} else {
die(_("unknown value for --diff-merges: %s"), optarg);
}
} else if ((argcount = diff_merges_parse_opts(revs, argv))) {
return argcount;
} else if (!strcmp(arg, "--no-diff-merges")) {
revs->ignore_merges = 1;
} else if (!strcmp(arg, "-c")) {
revs->diff = 1;
revs->dense_combined_merges = 0;
revs->combine_merges = 1;
} else if (!strcmp(arg, "--combined-all-paths")) {
revs->diff = 1;
revs->combined_all_paths = 1;
} else if (!strcmp(arg, "--cc")) {
revs->diff = 1;
revs->dense_combined_merges = 1;
revs->combine_merges = 1;
} else if (!strcmp(arg, "-v")) {
revs->verbose_header = 1;
} else if (!strcmp(arg, "--pretty")) {
@ -2867,12 +2841,8 @@ int setup_revisions(int argc, const char **argv, struct rev_info *revs, struct s
copy_pathspec(&revs->diffopt.pathspec,
&revs->prune_data);
}
if (revs->combine_merges && revs->ignore_merges < 0)
revs->ignore_merges = 0;
if (revs->ignore_merges < 0)
revs->ignore_merges = 1;
if (revs->combined_all_paths && !revs->combine_merges)
die("--combined-all-paths makes no sense without -c or --cc");
diff_merges_setup_revs(revs);
revs->diffopt.abbrev = revs->abbrev;

9
revision.h
View File

@ -191,11 +191,16 @@ struct rev_info {
match_missing:1,
no_commit_id:1,
verbose_header:1,
always_show_header:1,
/* Diff-merge flags */
explicit_diff_merges: 1,
merges_need_diff: 1,
separate_merges: 1,
combine_merges:1,
combined_all_paths:1,
combined_imply_patch:1,
dense_combined_merges:1,
always_show_header:1;
int ignore_merges:2;
first_parent_merges:1;
/* Format info */
int show_notes;

11
t/t4013-diff-various.sh
View File

@ -178,6 +178,7 @@ process_diffs () {
V=$(git version | sed -e 's/^git version //' -e 's/\./\\./g')
while read magic cmd
do
status=success
case "$magic" in
'' | '#'*)
continue ;;
@ -186,6 +187,10 @@ do
label="$magic-$cmd"
case "$magic" in
noellipses) ;;
failure)
status=failure
magic=
label="$cmd" ;;
*)
BUG "unknown magic $magic" ;;
esac ;;
@ -198,7 +203,7 @@ do
expect="$TEST_DIRECTORY/t4013/diff.$test"
actual="$pfx-diff.$test"
test_expect_success "git $cmd # magic is ${magic:-(not used)}" '
test_expect_$status "git $cmd # magic is ${magic:-(not used)}" '
{
echo "$ git $cmd"
case "$magic" in
@ -326,8 +331,12 @@ log --no-diff-merges -p --first-parent master
log --diff-merges=off -p --first-parent master
log --first-parent --diff-merges=off -p master
log -p --first-parent master
log -p --diff-merges=first-parent master
log --diff-merges=first-parent master
log -m -p --first-parent master
log -m -p master
log --cc -m -p master
log -c -m -p master
log -SF master
log -S F master
log -SF -p master

200
t/t4013/diff.log_--cc_-m_-p_master Normal file
View File

@ -0,0 +1,200 @@
$ git log --cc -m -p master
commit 59d314ad6f356dd08601a4cd5e530381da3e3c64 (from 9a6d4949b6b76956d9d5e26f2791ec2ceff5fdc0)
Merge: 9a6d494 c7a2ab9
Author: A U Thor <author@example.com>
Date: Mon Jun 26 00:04:00 2006 +0000
Merge branch 'side'
diff --git a/dir/sub b/dir/sub
index cead32e..992913c 100644
--- a/dir/sub
+++ b/dir/sub
@@ -4,3 +4,5 @@ C
D
E
F
+1
+2
diff --git a/file0 b/file0
index b414108..10a8a9f 100644
--- a/file0
+++ b/file0
@@ -4,3 +4,6 @@
4
5
6
+A
+B
+C
commit 59d314ad6f356dd08601a4cd5e530381da3e3c64 (from c7a2ab9e8eac7b117442a607d5a9b3950ae34d5a)
Merge: 9a6d494 c7a2ab9
Author: A U Thor <author@example.com>
Date: Mon Jun 26 00:04:00 2006 +0000
Merge branch 'side'
diff --git a/dir/sub b/dir/sub
index 7289e35..992913c 100644
--- a/dir/sub
+++ b/dir/sub
@@ -1,4 +1,8 @@
A
B
+C
+D
+E
+F
1
2
diff --git a/file0 b/file0
index f4615da..10a8a9f 100644
--- a/file0
+++ b/file0
@@ -1,6 +1,9 @@
1
2
3
+4
+5
+6
A
B
C
diff --git a/file1 b/file1
new file mode 100644
index 0000000..b1e6722
--- /dev/null
+++ b/file1
@@ -0,0 +1,3 @@
+A
+B
+C
diff --git a/file2 b/file2
deleted file mode 100644
index 01e79c3..0000000
--- a/file2
+++ /dev/null
@@ -1,3 +0,0 @@
-1
-2
-3
diff --git a/file3 b/file3
deleted file mode 100644
index 7289e35..0000000
--- a/file3
+++ /dev/null
@@ -1,4 +0,0 @@
-A
-B
-1
-2
commit c7a2ab9e8eac7b117442a607d5a9b3950ae34d5a
Author: A U Thor <author@example.com>
Date: Mon Jun 26 00:03:00 2006 +0000
Side
diff --git a/dir/sub b/dir/sub
index 35d242b..7289e35 100644
--- a/dir/sub
+++ b/dir/sub
@@ -1,2 +1,4 @@
A
B
+1
+2
diff --git a/file0 b/file0
index 01e79c3..f4615da 100644
--- a/file0
+++ b/file0
@@ -1,3 +1,6 @@
1
2
3
+A
+B
+C
diff --git a/file3 b/file3
new file mode 100644
index 0000000..7289e35
--- /dev/null
+++ b/file3
@@ -0,0 +1,4 @@
+A
+B
+1
+2
commit 9a6d4949b6b76956d9d5e26f2791ec2ceff5fdc0
Author: A U Thor <author@example.com>
Date: Mon Jun 26 00:02:00 2006 +0000
Third
diff --git a/dir/sub b/dir/sub
index 8422d40..cead32e 100644
--- a/dir/sub
+++ b/dir/sub
@@ -2,3 +2,5 @@ A
B
C
D
+E
+F
diff --git a/file1 b/file1
new file mode 100644
index 0000000..b1e6722
--- /dev/null
+++ b/file1
@@ -0,0 +1,3 @@
+A
+B
+C
commit 1bde4ae5f36c8d9abe3a0fce0c6aab3c4a12fe44
Author: A U Thor <author@example.com>
Date: Mon Jun 26 00:01:00 2006 +0000
Second
This is the second commit.
diff --git a/dir/sub b/dir/sub
index 35d242b..8422d40 100644
--- a/dir/sub
+++ b/dir/sub
@@ -1,2 +1,4 @@
A
B
+C
+D
diff --git a/file0 b/file0
index 01e79c3..b414108 100644
--- a/file0
+++ b/file0
@@ -1,3 +1,6 @@
1
2
3
+4
+5
+6
diff --git a/file2 b/file2
deleted file mode 100644
index 01e79c3..0000000
--- a/file2
+++ /dev/null
@@ -1,3 +0,0 @@
-1
-2
-3
commit 444ac553ac7612cc88969031b02b3767fb8a353a
Author: A U Thor <author@example.com>
Date: Mon Jun 26 00:00:00 2006 +0000
Initial
$

56
t/t4013/diff.log_--diff-merges=first-parent_master Normal file
View File

@ -0,0 +1,56 @@
$ git log --diff-merges=first-parent master
commit 59d314ad6f356dd08601a4cd5e530381da3e3c64
Merge: 9a6d494 c7a2ab9
Author: A U Thor <author@example.com>
Date: Mon Jun 26 00:04:00 2006 +0000
Merge branch 'side'
diff --git a/dir/sub b/dir/sub
index cead32e..992913c 100644
--- a/dir/sub
+++ b/dir/sub
@@ -4,3 +4,5 @@ C
D
E
F
+1
+2
diff --git a/file0 b/file0
index b414108..10a8a9f 100644
--- a/file0
+++ b/file0
@@ -4,3 +4,6 @@
4
5
6
+A
+B
+C
commit c7a2ab9e8eac7b117442a607d5a9b3950ae34d5a
Author: A U Thor <author@example.com>
Date: Mon Jun 26 00:03:00 2006 +0000
Side
commit 9a6d4949b6b76956d9d5e26f2791ec2ceff5fdc0
Author: A U Thor <author@example.com>
Date: Mon Jun 26 00:02:00 2006 +0000
Third
commit 1bde4ae5f36c8d9abe3a0fce0c6aab3c4a12fe44
Author: A U Thor <author@example.com>
Date: Mon Jun 26 00:01:00 2006 +0000
Second
This is the second commit.
commit 444ac553ac7612cc88969031b02b3767fb8a353a
Author: A U Thor <author@example.com>
Date: Mon Jun 26 00:00:00 2006 +0000
Initial
$

200
t/t4013/diff.log_-c_-m_-p_master Normal file
View File

@ -0,0 +1,200 @@
$ git log -c -m -p master
commit 59d314ad6f356dd08601a4cd5e530381da3e3c64 (from 9a6d4949b6b76956d9d5e26f2791ec2ceff5fdc0)
Merge: 9a6d494 c7a2ab9
Author: A U Thor <author@example.com>
Date: Mon Jun 26 00:04:00 2006 +0000
Merge branch 'side'
diff --git a/dir/sub b/dir/sub
index cead32e..992913c 100644
--- a/dir/sub
+++ b/dir/sub
@@ -4,3 +4,5 @@ C
D
E
F
+1
+2
diff --git a/file0 b/file0
index b414108..10a8a9f 100644
--- a/file0
+++ b/file0
@@ -4,3 +4,6 @@
4
5
6
+A
+B
+C
commit 59d314ad6f356dd08601a4cd5e530381da3e3c64 (from c7a2ab9e8eac7b117442a607d5a9b3950ae34d5a)
Merge: 9a6d494 c7a2ab9
Author: A U Thor <author@example.com>
Date: Mon Jun 26 00:04:00 2006 +0000
Merge branch 'side'
diff --git a/dir/sub b/dir/sub
index 7289e35..992913c 100644
--- a/dir/sub
+++ b/dir/sub
@@ -1,4 +1,8 @@
A
B
+C
+D
+E
+F
1
2
diff --git a/file0 b/file0
index f4615da..10a8a9f 100644
--- a/file0
+++ b/file0
@@ -1,6 +1,9 @@
1
2
3
+4
+5
+6
A
B
C
diff --git a/file1 b/file1
new file mode 100644
index 0000000..b1e6722
--- /dev/null
+++ b/file1
@@ -0,0 +1,3 @@
+A
+B
+C
diff --git a/file2 b/file2
deleted file mode 100644
index 01e79c3..0000000
--- a/file2
+++ /dev/null
@@ -1,3 +0,0 @@
-1
-2
-3
diff --git a/file3 b/file3
deleted file mode 100644
index 7289e35..0000000
--- a/file3
+++ /dev/null
@@ -1,4 +0,0 @@
-A
-B
-1
-2
commit c7a2ab9e8eac7b117442a607d5a9b3950ae34d5a
Author: A U Thor <author@example.com>
Date: Mon Jun 26 00:03:00 2006 +0000
Side
diff --git a/dir/sub b/dir/sub
index 35d242b..7289e35 100644
--- a/dir/sub
+++ b/dir/sub
@@ -1,2 +1,4 @@
A
B
+1
+2
diff --git a/file0 b/file0
index 01e79c3..f4615da 100644
--- a/file0
+++ b/file0
@@ -1,3 +1,6 @@
1
2
3
+A
+B
+C
diff --git a/file3 b/file3
new file mode 100644
index 0000000..7289e35
--- /dev/null
+++ b/file3
@@ -0,0 +1,4 @@
+A
+B
+1
+2
commit 9a6d4949b6b76956d9d5e26f2791ec2ceff5fdc0
Author: A U Thor <author@example.com>
Date: Mon Jun 26 00:02:00 2006 +0000
Third
diff --git a/dir/sub b/dir/sub
index 8422d40..cead32e 100644
--- a/dir/sub
+++ b/dir/sub
@@ -2,3 +2,5 @@ A
B
C
D
+E
+F
diff --git a/file1 b/file1
new file mode 100644
index 0000000..b1e6722
--- /dev/null
+++ b/file1
@@ -0,0 +1,3 @@
+A
+B
+C
commit 1bde4ae5f36c8d9abe3a0fce0c6aab3c4a12fe44
Author: A U Thor <author@example.com>
Date: Mon Jun 26 00:01:00 2006 +0000
Second
This is the second commit.
diff --git a/dir/sub b/dir/sub
index 35d242b..8422d40 100644
--- a/dir/sub
+++ b/dir/sub
@@ -1,2 +1,4 @@
A
B
+C
+D
diff --git a/file0 b/file0
index 01e79c3..b414108 100644
--- a/file0
+++ b/file0
@@ -1,3 +1,6 @@
1
2
3
+4
+5
+6
diff --git a/file2 b/file2
deleted file mode 100644
index 01e79c3..0000000
--- a/file2
+++ /dev/null
@@ -1,3 +0,0 @@
-1
-2
-3
commit 444ac553ac7612cc88969031b02b3767fb8a353a
Author: A U Thor <author@example.com>
Date: Mon Jun 26 00:00:00 2006 +0000
Initial
$

137
t/t4013/diff.log_-p_--diff-merges=first-parent_master Normal file
View File

@ -0,0 +1,137 @@
$ git log -p --diff-merges=first-parent master
commit 59d314ad6f356dd08601a4cd5e530381da3e3c64
Merge: 9a6d494 c7a2ab9
Author: A U Thor <author@example.com>
Date: Mon Jun 26 00:04:00 2006 +0000
Merge branch 'side'
diff --git a/dir/sub b/dir/sub
index cead32e..992913c 100644
--- a/dir/sub
+++ b/dir/sub
@@ -4,3 +4,5 @@ C
D
E
F
+1
+2
diff --git a/file0 b/file0
index b414108..10a8a9f 100644
--- a/file0
+++ b/file0
@@ -4,3 +4,6 @@
4
5
6
+A
+B
+C
commit c7a2ab9e8eac7b117442a607d5a9b3950ae34d5a
Author: A U Thor <author@example.com>
Date: Mon Jun 26 00:03:00 2006 +0000
Side
diff --git a/dir/sub b/dir/sub
index 35d242b..7289e35 100644
--- a/dir/sub
+++ b/dir/sub
@@ -1,2 +1,4 @@
A
B
+1
+2
diff --git a/file0 b/file0
index 01e79c3..f4615da 100644
--- a/file0
+++ b/file0
@@ -1,3 +1,6 @@
1
2
3
+A
+B
+C
diff --git a/file3 b/file3
new file mode 100644
index 0000000..7289e35
--- /dev/null
+++ b/file3
@@ -0,0 +1,4 @@
+A
+B
+1
+2
commit 9a6d4949b6b76956d9d5e26f2791ec2ceff5fdc0
Author: A U Thor <author@example.com>
Date: Mon Jun 26 00:02:00 2006 +0000
Third
diff --git a/dir/sub b/dir/sub
index 8422d40..cead32e 100644
--- a/dir/sub
+++ b/dir/sub
@@ -2,3 +2,5 @@ A
B
C
D
+E
+F
diff --git a/file1 b/file1
new file mode 100644
index 0000000..b1e6722
--- /dev/null
+++ b/file1
@@ -0,0 +1,3 @@
+A
+B
+C
commit 1bde4ae5f36c8d9abe3a0fce0c6aab3c4a12fe44
Author: A U Thor <author@example.com>
Date: Mon Jun 26 00:01:00 2006 +0000
Second
This is the second commit.
diff --git a/dir/sub b/dir/sub
index 35d242b..8422d40 100644
--- a/dir/sub
+++ b/dir/sub
@@ -1,2 +1,4 @@
A
B
+C
+D
diff --git a/file0 b/file0
index 01e79c3..b414108 100644
--- a/file0
+++ b/file0
@@ -1,3 +1,6 @@
1
2
3
+4
+5
+6
diff --git a/file2 b/file2
deleted file mode 100644
index 01e79c3..0000000
--- a/file2
+++ /dev/null
@@ -1,3 +0,0 @@
-1
-2
-3
commit 444ac553ac7612cc88969031b02b3767fb8a353a
Author: A U Thor <author@example.com>
Date: Mon Jun 26 00:00:00 2006 +0000
Initial
$