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-rw-r--r--Documentation/diff-config.txt9
-rw-r--r--Documentation/diff-options.txt17
-rw-r--r--diff.c31
-rw-r--r--diff.h3
-rw-r--r--submodule.c69
-rw-r--r--submodule.h6
-rwxr-xr-xt/t4060-diff-submodule-option-diff-format.sh749
7 files changed, 863 insertions, 21 deletions
diff --git a/Documentation/diff-config.txt b/Documentation/diff-config.txt
index d5a5b17..0eded24 100644
--- a/Documentation/diff-config.txt
+++ b/Documentation/diff-config.txt
@@ -122,10 +122,11 @@ diff.suppressBlankEmpty::
diff.submodule::
Specify the format in which differences in submodules are
- shown. The "log" format lists the commits in the range like
- linkgit:git-submodule[1] `summary` does. The "short" format
- format just shows the names of the commits at the beginning
- and end of the range. Defaults to short.
+ shown. The "short" format just shows the names of the commits
+ at the beginning and end of the range. The "log" format lists
+ the commits in the range like linkgit:git-submodule[1] `summary`
+ does. The "diff" format shows an inline diff of the changed
+ contents of the submodule. Defaults to "short".
diff.wordRegex::
A POSIX Extended Regular Expression used to determine what is a "word"
diff --git a/Documentation/diff-options.txt b/Documentation/diff-options.txt
index cc4342e..7805a0c 100644
--- a/Documentation/diff-options.txt
+++ b/Documentation/diff-options.txt
@@ -210,13 +210,16 @@ any of those replacements occurred.
of the `--diff-filter` option on what the status letters mean.
--submodule[=<format>]::
- Specify how differences in submodules are shown. When `--submodule`
- or `--submodule=log` is given, the 'log' format is used. This format lists
- the commits in the range like linkgit:git-submodule[1] `summary` does.
- Omitting the `--submodule` option or specifying `--submodule=short`,
- uses the 'short' format. This format just shows the names of the commits
- at the beginning and end of the range. Can be tweaked via the
- `diff.submodule` configuration variable.
+ Specify how differences in submodules are shown. When specifying
+ `--submodule=short` the 'short' format is used. This format just
+ shows the names of the commits at the beginning and end of the range.
+ When `--submodule` or `--submodule=log` is specified, the 'log'
+ format is used. This format lists the commits in the range like
+ linkgit:git-submodule[1] `summary` does. When `--submodule=diff`
+ is specified, the 'diff' format is used. This format shows an
+ inline diff of the changes in the submodule contents between the
+ commit range. Defaults to `diff.submodule` or the 'short' format
+ if the config option is unset.
--color[=<when>]::
Show colored diff.
diff --git a/diff.c b/diff.c
index a74e6e0..b002fdf 100644
--- a/diff.c
+++ b/diff.c
@@ -135,6 +135,8 @@ static int parse_submodule_params(struct diff_options *options, const char *valu
options->submodule_format = DIFF_SUBMODULE_LOG;
else if (!strcmp(value, "short"))
options->submodule_format = DIFF_SUBMODULE_SHORT;
+ else if (!strcmp(value, "diff"))
+ options->submodule_format = DIFF_SUBMODULE_INLINE_DIFF;
else
return -1;
return 0;
@@ -2300,6 +2302,15 @@ static void builtin_diff(const char *name_a,
struct strbuf header = STRBUF_INIT;
const char *line_prefix = diff_line_prefix(o);
+ diff_set_mnemonic_prefix(o, "a/", "b/");
+ if (DIFF_OPT_TST(o, REVERSE_DIFF)) {
+ a_prefix = o->b_prefix;
+ b_prefix = o->a_prefix;
+ } else {
+ a_prefix = o->a_prefix;
+ b_prefix = o->b_prefix;
+ }
+
if (o->submodule_format == DIFF_SUBMODULE_LOG &&
(!one->mode || S_ISGITLINK(one->mode)) &&
(!two->mode || S_ISGITLINK(two->mode))) {
@@ -2311,6 +2322,17 @@ static void builtin_diff(const char *name_a,
two->dirty_submodule,
meta, del, add, reset);
return;
+ } else if (o->submodule_format == DIFF_SUBMODULE_INLINE_DIFF &&
+ (!one->mode || S_ISGITLINK(one->mode)) &&
+ (!two->mode || S_ISGITLINK(two->mode))) {
+ const char *del = diff_get_color_opt(o, DIFF_FILE_OLD);
+ const char *add = diff_get_color_opt(o, DIFF_FILE_NEW);
+ show_submodule_inline_diff(o->file, one->path ? one->path : two->path,
+ line_prefix,
+ &one->oid, &two->oid,
+ two->dirty_submodule,
+ meta, del, add, reset, o);
+ return;
}
if (DIFF_OPT_TST(o, ALLOW_TEXTCONV)) {
@@ -2318,15 +2340,6 @@ static void builtin_diff(const char *name_a,
textconv_two = get_textconv(two);
}
- diff_set_mnemonic_prefix(o, "a/", "b/");
- if (DIFF_OPT_TST(o, REVERSE_DIFF)) {
- a_prefix = o->b_prefix;
- b_prefix = o->a_prefix;
- } else {
- a_prefix = o->a_prefix;
- b_prefix = o->b_prefix;
- }
-
/* Never use a non-valid filename anywhere if at all possible */
name_a = DIFF_FILE_VALID(one) ? name_a : name_b;
name_b = DIFF_FILE_VALID(two) ? name_b : name_a;
diff --git a/diff.h b/diff.h
index 14be35d..2d884f1 100644
--- a/diff.h
+++ b/diff.h
@@ -111,7 +111,8 @@ enum diff_words_type {
enum diff_submodule_format {
DIFF_SUBMODULE_SHORT = 0,
- DIFF_SUBMODULE_LOG
+ DIFF_SUBMODULE_LOG,
+ DIFF_SUBMODULE_INLINE_DIFF
};
struct diff_options {
diff --git a/submodule.c b/submodule.c
index 2d88c55..5a62aa2 100644
--- a/submodule.c
+++ b/submodule.c
@@ -442,6 +442,75 @@ out:
clear_commit_marks(right, ~0);
}
+void show_submodule_inline_diff(FILE *f, const char *path,
+ const char *line_prefix,
+ struct object_id *one, struct object_id *two,
+ unsigned dirty_submodule, const char *meta,
+ const char *del, const char *add, const char *reset,
+ const struct diff_options *o)
+{
+ const struct object_id *old = &empty_tree_oid, *new = &empty_tree_oid;
+ struct commit *left = NULL, *right = NULL;
+ struct commit_list *merge_bases = NULL;
+ struct strbuf submodule_dir = STRBUF_INIT;
+ struct child_process cp = CHILD_PROCESS_INIT;
+
+ show_submodule_header(f, path, line_prefix, one, two, dirty_submodule,
+ meta, reset, &left, &right, &merge_bases);
+
+ /* We need a valid left and right commit to display a difference */
+ if (!(left || is_null_oid(one)) ||
+ !(right || is_null_oid(two)))
+ goto done;
+
+ if (left)
+ old = one;
+ if (right)
+ new = two;
+
+ fflush(f);
+ cp.git_cmd = 1;
+ cp.dir = path;
+ cp.out = dup(fileno(f));
+ cp.no_stdin = 1;
+
+ /* TODO: other options may need to be passed here. */
+ argv_array_push(&cp.args, "diff");
+ argv_array_pushf(&cp.args, "--line-prefix=%s", line_prefix);
+ if (DIFF_OPT_TST(o, REVERSE_DIFF)) {
+ argv_array_pushf(&cp.args, "--src-prefix=%s%s/",
+ o->b_prefix, path);
+ argv_array_pushf(&cp.args, "--dst-prefix=%s%s/",
+ o->a_prefix, path);
+ } else {
+ argv_array_pushf(&cp.args, "--src-prefix=%s%s/",
+ o->a_prefix, path);
+ argv_array_pushf(&cp.args, "--dst-prefix=%s%s/",
+ o->b_prefix, path);
+ }
+ argv_array_push(&cp.args, oid_to_hex(old));
+ /*
+ * If the submodule has modified content, we will diff against the
+ * work tree, under the assumption that the user has asked for the
+ * diff format and wishes to actually see all differences even if they
+ * haven't yet been committed to the submodule yet.
+ */
+ if (!(dirty_submodule & DIRTY_SUBMODULE_MODIFIED))
+ argv_array_push(&cp.args, oid_to_hex(new));
+
+ if (run_command(&cp))
+ fprintf(f, "(diff failed)\n");
+
+done:
+ strbuf_release(&submodule_dir);
+ if (merge_bases)
+ free_commit_list(merge_bases);
+ if (left)
+ clear_commit_marks(left, ~0);
+ if (right)
+ clear_commit_marks(right, ~0);
+}
+
void set_config_fetch_recurse_submodules(int value)
{
config_fetch_recurse_submodules = value;
diff --git a/submodule.h b/submodule.h
index d83df57..d9e197a 100644
--- a/submodule.h
+++ b/submodule.h
@@ -46,6 +46,12 @@ void show_submodule_summary(FILE *f, const char *path,
struct object_id *one, struct object_id *two,
unsigned dirty_submodule, const char *meta,
const char *del, const char *add, const char *reset);
+void show_submodule_inline_diff(FILE *f, const char *path,
+ const char *line_prefix,
+ struct object_id *one, struct object_id *two,
+ unsigned dirty_submodule, const char *meta,
+ const char *del, const char *add, const char *reset,
+ const struct diff_options *opt);
void set_config_fetch_recurse_submodules(int value);
void check_for_new_submodule_commits(unsigned char new_sha1[20]);
int fetch_populated_submodules(const struct argv_array *options,
diff --git a/t/t4060-diff-submodule-option-diff-format.sh b/t/t4060-diff-submodule-option-diff-format.sh
new file mode 100755
index 0000000..7e23b55
--- /dev/null
+++ b/t/t4060-diff-submodule-option-diff-format.sh
@@ -0,0 +1,749 @@
+#!/bin/sh
+#
+# Copyright (c) 2009 Jens Lehmann, based on t7401 by Ping Yin
+# Copyright (c) 2011 Alexey Shumkin (+ non-UTF-8 commit encoding tests)
+# Copyright (c) 2016 Jacob Keller (copy + convert to --submodule=diff)
+#
+
+test_description='Support for diff format verbose submodule difference in git diff
+
+This test tries to verify the sanity of --submodule=diff option of git diff.
+'
+
+. ./test-lib.sh
+
+# Tested non-UTF-8 encoding
+test_encoding="ISO8859-1"
+
+# String "added" in German (translated with Google Translate), encoded in UTF-8,
+# used in sample commit log messages in add_file() function below.
+added=$(printf "hinzugef\303\274gt")
+
+add_file () {
+ (
+ cd "$1" &&
+ shift &&
+ for name
+ do
+ echo "$name" >"$name" &&
+ git add "$name" &&
+ test_tick &&
+ # "git commit -m" would break MinGW, as Windows refuse to pass
+ # $test_encoding encoded parameter to git.
+ echo "Add $name ($added $name)" | iconv -f utf-8 -t $test_encoding |
+ git -c "i18n.commitEncoding=$test_encoding" commit -F -
+ done >/dev/null &&
+ git rev-parse --short --verify HEAD
+ )
+}
+
+commit_file () {
+ test_tick &&
+ git commit "$@" -m "Commit $*" >/dev/null
+}
+
+test_expect_success 'setup repository' '
+ test_create_repo sm1 &&
+ add_file . foo &&
+ head1=$(add_file sm1 foo1 foo2) &&
+ fullhead1=$(git -C sm1 rev-parse --verify HEAD)
+'
+
+test_expect_success 'added submodule' '
+ git add sm1 &&
+ git diff-index -p --submodule=diff HEAD >actual &&
+ cat >expected <<-EOF &&
+ Submodule sm1 0000000...$head1 (new submodule)
+ diff --git a/sm1/foo1 b/sm1/foo1
+ new file mode 100644
+ index 0000000..1715acd
+ --- /dev/null
+ +++ b/sm1/foo1
+ @@ -0,0 +1 @@
+ +foo1
+ diff --git a/sm1/foo2 b/sm1/foo2
+ new file mode 100644
+ index 0000000..54b060e
+ --- /dev/null
+ +++ b/sm1/foo2
+ @@ -0,0 +1 @@
+ +foo2
+ EOF
+ test_cmp expected actual
+'
+
+test_expect_success 'added submodule, set diff.submodule' '
+ test_config diff.submodule log &&
+ git add sm1 &&
+ git diff-index -p --submodule=diff HEAD >actual &&
+ cat >expected <<-EOF &&
+ Submodule sm1 0000000...$head1 (new submodule)
+ diff --git a/sm1/foo1 b/sm1/foo1
+ new file mode 100644
+ index 0000000..1715acd
+ --- /dev/null
+ +++ b/sm1/foo1
+ @@ -0,0 +1 @@
+ +foo1
+ diff --git a/sm1/foo2 b/sm1/foo2
+ new file mode 100644
+ index 0000000..54b060e
+ --- /dev/null
+ +++ b/sm1/foo2
+ @@ -0,0 +1 @@
+ +foo2
+ EOF
+ test_cmp expected actual
+'
+
+test_expect_success '--submodule=short overrides diff.submodule' '
+ test_config diff.submodule log &&
+ git add sm1 &&
+ git diff --submodule=short --cached >actual &&
+ cat >expected <<-EOF &&
+ diff --git a/sm1 b/sm1
+ new file mode 160000
+ index 0000000..$head1
+ --- /dev/null
+ +++ b/sm1
+ @@ -0,0 +1 @@
+ +Subproject commit $fullhead1
+ EOF
+ test_cmp expected actual
+'
+
+test_expect_success 'diff.submodule does not affect plumbing' '
+ test_config diff.submodule log &&
+ git diff-index -p HEAD >actual &&
+ cat >expected <<-EOF &&
+ diff --git a/sm1 b/sm1
+ new file mode 160000
+ index 0000000..$head1
+ --- /dev/null
+ +++ b/sm1
+ @@ -0,0 +1 @@
+ +Subproject commit $fullhead1
+ EOF
+ test_cmp expected actual
+'
+
+commit_file sm1 &&
+head2=$(add_file sm1 foo3)
+
+test_expect_success 'modified submodule(forward)' '
+ git diff-index -p --submodule=diff HEAD >actual &&
+ cat >expected <<-EOF &&
+ Submodule sm1 $head1..$head2:
+ diff --git a/sm1/foo3 b/sm1/foo3
+ new file mode 100644
+ index 0000000..c1ec6c6
+ --- /dev/null
+ +++ b/sm1/foo3
+ @@ -0,0 +1 @@
+ +foo3
+ EOF
+ test_cmp expected actual
+'
+
+test_expect_success 'modified submodule(forward)' '
+ git diff --submodule=diff >actual &&
+ cat >expected <<-EOF &&
+ Submodule sm1 $head1..$head2:
+ diff --git a/sm1/foo3 b/sm1/foo3
+ new file mode 100644
+ index 0000000..c1ec6c6
+ --- /dev/null
+ +++ b/sm1/foo3
+ @@ -0,0 +1 @@
+ +foo3
+ EOF
+ test_cmp expected actual
+'
+
+test_expect_success 'modified submodule(forward) --submodule' '
+ git diff --submodule >actual &&
+ cat >expected <<-EOF &&
+ Submodule sm1 $head1..$head2:
+ > Add foo3 ($added foo3)
+ EOF
+ test_cmp expected actual
+'
+
+fullhead2=$(cd sm1; git rev-parse --verify HEAD)
+test_expect_success 'modified submodule(forward) --submodule=short' '
+ git diff --submodule=short >actual &&
+ cat >expected <<-EOF &&
+ diff --git a/sm1 b/sm1
+ index $head1..$head2 160000
+ --- a/sm1
+ +++ b/sm1
+ @@ -1 +1 @@
+ -Subproject commit $fullhead1
+ +Subproject commit $fullhead2
+ EOF
+ test_cmp expected actual
+'
+
+commit_file sm1 &&
+head3=$(
+ cd sm1 &&
+ git reset --hard HEAD~2 >/dev/null &&
+ git rev-parse --short --verify HEAD
+)
+
+test_expect_success 'modified submodule(backward)' '
+ git diff-index -p --submodule=diff HEAD >actual &&
+ cat >expected <<-EOF &&
+ Submodule sm1 $head2..$head3 (rewind):
+ diff --git a/sm1/foo2 b/sm1/foo2
+ deleted file mode 100644
+ index 54b060e..0000000
+ --- a/sm1/foo2
+ +++ /dev/null
+ @@ -1 +0,0 @@
+ -foo2
+ diff --git a/sm1/foo3 b/sm1/foo3
+ deleted file mode 100644
+ index c1ec6c6..0000000
+ --- a/sm1/foo3
+ +++ /dev/null
+ @@ -1 +0,0 @@
+ -foo3
+ EOF
+ test_cmp expected actual
+'
+
+head4=$(add_file sm1 foo4 foo5)
+test_expect_success 'modified submodule(backward and forward)' '
+ git diff-index -p --submodule=diff HEAD >actual &&
+ cat >expected <<-EOF &&
+ Submodule sm1 $head2...$head4:
+ diff --git a/sm1/foo2 b/sm1/foo2
+ deleted file mode 100644
+ index 54b060e..0000000
+ --- a/sm1/foo2
+ +++ /dev/null
+ @@ -1 +0,0 @@
+ -foo2
+ diff --git a/sm1/foo3 b/sm1/foo3
+ deleted file mode 100644
+ index c1ec6c6..0000000
+ --- a/sm1/foo3
+ +++ /dev/null
+ @@ -1 +0,0 @@
+ -foo3
+ diff --git a/sm1/foo4 b/sm1/foo4
+ new file mode 100644
+ index 0000000..a0016db
+ --- /dev/null
+ +++ b/sm1/foo4
+ @@ -0,0 +1 @@
+ +foo4
+ diff --git a/sm1/foo5 b/sm1/foo5
+ new file mode 100644
+ index 0000000..d6f2413
+ --- /dev/null
+ +++ b/sm1/foo5
+ @@ -0,0 +1 @@
+ +foo5
+ EOF
+ test_cmp expected actual
+'
+
+commit_file sm1 &&
+mv sm1 sm1-bak &&
+echo sm1 >sm1 &&
+head5=$(git hash-object sm1 | cut -c1-7) &&
+git add sm1 &&
+rm -f sm1 &&
+mv sm1-bak sm1
+
+test_expect_success 'typechanged submodule(submodule->blob), --cached' '
+ git diff --submodule=diff --cached >actual &&
+ cat >expected <<-EOF &&
+ Submodule sm1 $head4...0000000 (submodule deleted)
+ diff --git a/sm1/foo1 b/sm1/foo1
+ deleted file mode 100644
+ index 1715acd..0000000
+ --- a/sm1/foo1
+ +++ /dev/null
+ @@ -1 +0,0 @@
+ -foo1
+ diff --git a/sm1/foo4 b/sm1/foo4
+ deleted file mode 100644
+ index a0016db..0000000
+ --- a/sm1/foo4
+ +++ /dev/null
+ @@ -1 +0,0 @@
+ -foo4
+ diff --git a/sm1/foo5 b/sm1/foo5
+ deleted file mode 100644
+ index d6f2413..0000000
+ --- a/sm1/foo5
+ +++ /dev/null
+ @@ -1 +0,0 @@
+ -foo5
+ diff --git a/sm1 b/sm1
+ new file mode 100644
+ index 0000000..9da5fb8
+ --- /dev/null
+ +++ b/sm1
+ @@ -0,0 +1 @@
+ +sm1
+ EOF
+ test_cmp expected actual
+'
+
+test_expect_success 'typechanged submodule(submodule->blob)' '
+ git diff --submodule=diff >actual &&
+ cat >expected <<-EOF &&
+ diff --git a/sm1 b/sm1
+ deleted file mode 100644
+ index 9da5fb8..0000000
+ --- a/sm1
+ +++ /dev/null
+ @@ -1 +0,0 @@
+ -sm1
+ Submodule sm1 0000000...$head4 (new submodule)
+ diff --git a/sm1/foo1 b/sm1/foo1
+ new file mode 100644
+ index 0000000..1715acd
+ --- /dev/null
+ +++ b/sm1/foo1
+ @@ -0,0 +1 @@
+ +foo1
+ diff --git a/sm1/foo4 b/sm1/foo4
+ new file mode 100644
+ index 0000000..a0016db
+ --- /dev/null
+ +++ b/sm1/foo4
+ @@ -0,0 +1 @@
+ +foo4
+ diff --git a/sm1/foo5 b/sm1/foo5
+ new file mode 100644
+ index 0000000..d6f2413
+ --- /dev/null
+ +++ b/sm1/foo5
+ @@ -0,0 +1 @@
+ +foo5
+ EOF
+ test_cmp expected actual
+'
+
+rm -rf sm1 &&
+git checkout-index sm1
+test_expect_success 'typechanged submodule(submodule->blob)' '
+ git diff-index -p --submodule=diff HEAD >actual &&
+ cat >expected <<-EOF &&
+ Submodule sm1 $head4...0000000 (submodule deleted)
+ diff --git a/sm1 b/sm1
+ new file mode 100644
+ index 0000000..9da5fb8
+ --- /dev/null
+ +++ b/sm1
+ @@ -0,0 +1 @@
+ +sm1
+ EOF
+ test_cmp expected actual
+'
+
+rm -f sm1 &&
+test_create_repo sm1 &&
+head6=$(add_file sm1 foo6 foo7)
+fullhead6=$(cd sm1; git rev-parse --verify HEAD)
+test_expect_success 'nonexistent commit' '
+ git diff-index -p --submodule=diff HEAD >actual &&
+ cat >expected <<-EOF &&
+ Submodule sm1 $head4...$head6 (commits not present)
+ EOF
+ test_cmp expected actual
+'
+
+commit_file
+test_expect_success 'typechanged submodule(blob->submodule)' '
+ git diff-index -p --submodule=diff HEAD >actual &&
+ cat >expected <<-EOF &&
+ diff --git a/sm1 b/sm1
+ deleted file mode 100644
+ index 9da5fb8..0000000
+ --- a/sm1
+ +++ /dev/null
+ @@ -1 +0,0 @@
+ -sm1
+ Submodule sm1 0000000...$head6 (new submodule)
+ diff --git a/sm1/foo6 b/sm1/foo6
+ new file mode 100644
+ index 0000000..462398b
+ --- /dev/null
+ +++ b/sm1/foo6
+ @@ -0,0 +1 @@
+ +foo6
+ diff --git a/sm1/foo7 b/sm1/foo7
+ new file mode 100644
+ index 0000000..6e9262c
+ --- /dev/null
+ +++ b/sm1/foo7
+ @@ -0,0 +1 @@
+ +foo7
+ EOF
+ test_cmp expected actual
+'
+
+commit_file sm1 &&
+test_expect_success 'submodule is up to date' '
+ git diff-index -p --submodule=diff HEAD >actual &&
+ cat >expected <<-EOF &&
+ EOF
+ test_cmp expected actual
+'
+
+test_expect_success 'submodule contains untracked content' '
+ echo new > sm1/new-file &&
+ git diff-index -p --submodule=diff HEAD >actual &&
+ cat >expected <<-EOF &&
+ Submodule sm1 contains untracked content
+ EOF
+ test_cmp expected actual
+'
+
+test_expect_success 'submodule contains untracked content (untracked ignored)' '
+ git diff-index -p --ignore-submodules=untracked --submodule=diff HEAD >actual &&
+ ! test -s actual
+'
+
+test_expect_success 'submodule contains untracked content (dirty ignored)' '
+ git diff-index -p --ignore-submodules=dirty --submodule=diff HEAD >actual &&
+ ! test -s actual
+'
+
+test_expect_success 'submodule contains untracked content (all ignored)' '
+ git diff-index -p --ignore-submodules=all --submodule=diff HEAD >actual &&
+ ! test -s actual
+'
+
+test_expect_success 'submodule contains untracked and modified content' '
+ echo new > sm1/foo6 &&
+ git diff-index -p --submodule=diff HEAD >actual &&
+ cat >expected <<-EOF &&
+ Submodule sm1 contains untracked content
+ Submodule sm1 contains modified content
+ diff --git a/sm1/foo6 b/sm1/foo6
+ index 462398b..3e75765 100644
+ --- a/sm1/foo6
+ +++ b/sm1/foo6
+ @@ -1 +1 @@
+ -foo6
+ +new
+ EOF
+ test_cmp expected actual
+'
+
+# NOT OK
+test_expect_success 'submodule contains untracked and modified content (untracked ignored)' '
+ echo new > sm1/foo6 &&
+ git diff-index -p --ignore-submodules=untracked --submodule=diff HEAD >actual &&
+ cat >expected <<-EOF &&
+ Submodule sm1 contains modified content
+ diff --git a/sm1/foo6 b/sm1/foo6
+ index 462398b..3e75765 100644
+ --- a/sm1/foo6
+ +++ b/sm1/foo6
+ @@ -1 +1 @@
+ -foo6
+ +new
+ EOF
+ test_cmp expected actual
+'
+
+test_expect_success 'submodule contains untracked and modified content (dirty ignored)' '
+ echo new > sm1/foo6 &&
+ git diff-index -p --ignore-submodules=dirty --submodule=diff HEAD >actual &&
+ ! test -s actual
+'
+
+test_expect_success 'submodule contains untracked and modified content (all ignored)' '
+ echo new > sm1/foo6 &&
+ git diff-index -p --ignore-submodules --submodule=diff HEAD >actual &&
+ ! test -s actual
+'
+
+test_expect_success 'submodule contains modified content' '
+ rm -f sm1/new-file &&
+ git diff-index -p --submodule=diff HEAD >actual &&
+ cat >expected <<-EOF &&
+ Submodule sm1 contains modified content
+ diff --git a/sm1/foo6 b/sm1/foo6
+ index 462398b..3e75765 100644
+ --- a/sm1/foo6
+ +++ b/sm1/foo6
+ @@ -1 +1 @@
+ -foo6
+ +new
+ EOF
+ test_cmp expected actual
+'
+
+(cd sm1; git commit -mchange foo6 >/dev/null) &&
+head8=$(cd sm1; git rev-parse --short --verify HEAD) &&
+test_expect_success 'submodule is modified' '
+ git diff-index -p --submodule=diff HEAD >actual &&
+ cat >expected <<-EOF &&
+ Submodule sm1 17243c9..$head8:
+ diff --git a/sm1/foo6 b/sm1/foo6
+ index 462398b..3e75765 100644
+ --- a/sm1/foo6
+ +++ b/sm1/foo6
+ @@ -1 +1 @@
+ -foo6
+ +new
+ EOF
+ test_cmp expected actual
+'
+
+test_expect_success 'modified submodule contains untracked content' '
+ echo new > sm1/new-file &&
+ git diff-index -p --submodule=diff HEAD >actual &&
+ cat >expected <<-EOF &&
+ Submodule sm1 contains untracked content
+ Submodule sm1 17243c9..$head8:
+ diff --git a/sm1/foo6 b/sm1/foo6
+ index 462398b..3e75765 100644
+ --- a/sm1/foo6
+ +++ b/sm1/foo6
+ @@ -1 +1 @@
+ -foo6
+ +new
+ EOF
+ test_cmp expected actual
+'
+
+test_expect_success 'modified submodule contains untracked content (untracked ignored)' '
+ git diff-index -p --ignore-submodules=untracked --submodule=diff HEAD >actual &&
+ cat >expected <<-EOF &&
+ Submodule sm1 17243c9..$head8:
+ diff --git a/sm1/foo6 b/sm1/foo6
+ index 462398b..3e75765 100644
+ --- a/sm1/foo6
+ +++ b/sm1/foo6
+ @@ -1 +1 @@
+ -foo6
+ +new
+ EOF
+ test_cmp expected actual
+'
+
+test_expect_success 'modified submodule contains untracked content (dirty ignored)' '
+ git diff-index -p --ignore-submodules=dirty --submodule=diff HEAD >actual &&
+ cat >expected <<-EOF &&
+ Submodule sm1 17243c9..cfce562:
+ diff --git a/sm1/foo6 b/sm1/foo6
+ index 462398b..3e75765 100644
+ --- a/sm1/foo6
+ +++ b/sm1/foo6
+ @@ -1 +1 @@
+ -foo6
+ +new
+ EOF
+ test_cmp expected actual
+'
+
+test_expect_success 'modified submodule contains untracked content (all ignored)' '
+ git diff-index -p --ignore-submodules=all --submodule=diff HEAD >actual &&
+ ! test -s actual
+'
+
+test_expect_success 'modified submodule contains untracked and modified content' '
+ echo modification >> sm1/foo6 &&
+ git diff-index -p --submodule=diff HEAD >actual &&
+ cat >expected <<-EOF &&
+ Submodule sm1 contains untracked content
+ Submodule sm1 contains modified content
+ Submodule sm1 17243c9..cfce562:
+ diff --git a/sm1/foo6 b/sm1/foo6
+ index 462398b..dfda541 100644
+ --- a/sm1/foo6
+ +++ b/sm1/foo6
+ @@ -1 +1,2 @@
+ -foo6
+ +new
+ +modification
+ EOF
+ test_cmp expected actual
+'
+
+test_expect_success 'modified submodule contains untracked and modified content (untracked ignored)' '
+ echo modification >> sm1/foo6 &&
+ git diff-index -p --ignore-submodules=untracked --submodule=diff HEAD >actual &&
+ cat >expected <<-EOF &&
+ Submodule sm1 contains modified content
+ Submodule sm1 17243c9..cfce562:
+ diff --git a/sm1/foo6 b/sm1/foo6
+ index 462398b..e20e2d9 100644
+ --- a/sm1/foo6
+ +++ b/sm1/foo6
+ @@ -1 +1,3 @@
+ -foo6
+ +new
+ +modification
+ +modification
+ EOF
+ test_cmp expected actual
+'
+
+test_expect_success 'modified submodule contains untracked and modified content (dirty ignored)' '
+ echo modification >> sm1/foo6 &&
+ git diff-index -p --ignore-submodules=dirty --submodule=diff HEAD >actual &&
+ cat >expected <<-EOF &&
+ Submodule sm1 17243c9..cfce562:
+ diff --git a/sm1/foo6 b/sm1/foo6
+ index 462398b..3e75765 100644
+ --- a/sm1/foo6
+ +++ b/sm1/foo6
+ @@ -1 +1 @@
+ -foo6
+ +new
+ EOF
+ test_cmp expected actual
+'
+
+test_expect_success 'modified submodule contains untracked and modified content (all ignored)' '
+ echo modification >> sm1/foo6 &&
+ git diff-index -p --ignore-submodules --submodule=diff HEAD >actual &&
+ ! test -s actual
+'
+
+# NOT OK
+test_expect_success 'modified submodule contains modified content' '
+ rm -f sm1/new-file &&
+ git diff-index -p --submodule=diff HEAD >actual &&
+ cat >expected <<-EOF &&
+ Submodule sm1 contains modified content
+ Submodule sm1 17243c9..cfce562:
+ diff --git a/sm1/foo6 b/sm1/foo6
+ index 462398b..ac466ca 100644
+ --- a/sm1/foo6
+ +++ b/sm1/foo6
+ @@ -1 +1,5 @@
+ -foo6
+ +new
+ +modification
+ +modification
+ +modification
+ +modification
+ EOF
+ test_cmp expected actual
+'
+
+rm -rf sm1
+test_expect_success 'deleted submodule' '
+ git diff-index -p --submodule=diff HEAD >actual &&
+ cat >expected <<-EOF &&
+ Submodule sm1 17243c9...0000000 (submodule deleted)
+ EOF
+ test_cmp expected actual
+'
+
+test_create_repo sm2 &&
+head7=$(add_file sm2 foo8 foo9) &&
+git add sm2
+
+test_expect_success 'multiple submodules' '
+ git diff-index -p --submodule=diff HEAD >actual &&
+ cat >expected <<-EOF &&
+ Submodule sm1 17243c9...0000000 (submodule deleted)
+ Submodule sm2 0000000...a5a65c9 (new submodule)
+ diff --git a/sm2/foo8 b/sm2/foo8
+ new file mode 100644
+ index 0000000..db9916b
+ --- /dev/null
+ +++ b/sm2/foo8
+ @@ -0,0 +1 @@
+ +foo8
+ diff --git a/sm2/foo9 b/sm2/foo9
+ new file mode 100644
+ index 0000000..9c3b4f6
+ --- /dev/null
+ +++ b/sm2/foo9
+ @@ -0,0 +1 @@
+ +foo9
+ EOF
+ test_cmp expected actual
+'
+
+test_expect_success 'path filter' '
+ git diff-index -p --submodule=diff HEAD sm2 >actual &&
+ cat >expected <<-EOF &&
+ Submodule sm2 0000000...a5a65c9 (new submodule)
+ diff --git a/sm2/foo8 b/sm2/foo8
+ new file mode 100644
+ index 0000000..db9916b
+ --- /dev/null
+ +++ b/sm2/foo8
+ @@ -0,0 +1 @@
+ +foo8
+ diff --git a/sm2/foo9 b/sm2/foo9
+ new file mode 100644
+ index 0000000..9c3b4f6
+ --- /dev/null
+ +++ b/sm2/foo9
+ @@ -0,0 +1 @@
+ +foo9
+ EOF
+ test_cmp expected actual
+'
+
+commit_file sm2
+test_expect_success 'given commit' '
+ git diff-index -p --submodule=diff HEAD^ >actual &&
+ cat >expected <<-EOF &&
+ Submodule sm1 17243c9...0000000 (submodule deleted)
+ Submodule sm2 0000000...a5a65c9 (new submodule)
+ diff --git a/sm2/foo8 b/sm2/foo8
+ new file mode 100644
+ index 0000000..db9916b
+ --- /dev/null
+ +++ b/sm2/foo8
+ @@ -0,0 +1 @@
+ +foo8
+ diff --git a/sm2/foo9 b/sm2/foo9
+ new file mode 100644
+ index 0000000..9c3b4f6
+ --- /dev/null
+ +++ b/sm2/foo9
+ @@ -0,0 +1 @@
+ +foo9
+ EOF
+ test_cmp expected actual
+'
+
+test_expect_success 'setup .git file for sm2' '
+ (cd sm2 &&
+ REAL="$(pwd)/../.real" &&
+ mv .git "$REAL"
+ echo "gitdir: $REAL" >.git)
+'
+
+test_expect_success 'diff --submodule=diff with .git file' '
+ git diff --submodule=diff HEAD^ >actual &&
+ cat >expected <<-EOF &&
+ Submodule sm1 17243c9...0000000 (submodule deleted)
+ Submodule sm2 0000000...a5a65c9 (new submodule)
+ diff --git a/sm2/foo8 b/sm2/foo8
+ new file mode 100644
+ index 0000000..db9916b
+ --- /dev/null
+ +++ b/sm2/foo8
+ @@ -0,0 +1 @@
+ +foo8
+ diff --git a/sm2/foo9 b/sm2/foo9
+ new file mode 100644
+ index 0000000..9c3b4f6
+ --- /dev/null
+ +++ b/sm2/foo9
+ @@ -0,0 +1 @@
+ +foo9
+ EOF
+ test_cmp expected actual
+'
+
+test_done