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git/t/t3206-range-diff.sh
Vasil Dimov 8cf51561d1 range-diff: fix a crash in parsing git-log output 
`git range-diff` calls `git log` internally and tries to parse its
output. But `git log` output can be customized by the user in their
git config and for certain configurations either an error will be
returned by `git range-diff` or it will crash.

To fix this explicitly set the output format of the internally
executed `git log` with `--pretty=medium`. Because that cancels
`--notes`, add explicitly `--notes` at the end.

Also, make sure we never crash in the same way - trying to dereference
`util` which was never created and has remained NULL. It would happen
if the first line of `git log` output does not begin with 'commit '.

Alternative considered but discarded - somehow disable all git configs
and behave as if no config is present in the internally executed
`git log`, but that does not seem to be possible. GIT_CONFIG_NOSYSTEM
is the closest to it, but even with that we would still read
`.git/config`.

Signed-off-by: Vasil Dimov <vd@FreeBSD.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-04-15 18:32:47 -07:00

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#!/bin/sh
test_description='range-diff tests'
. ./test-lib.sh
# Note that because of the range-diff's heuristics, test_commit does more
# harm than good. We need some real history.
test_expect_success 'setup' '
git fast-import <"$TEST_DIRECTORY"/t3206/history.export &&
test_oid_cache <<-\EOF
# topic
t1 sha1:4de457d
t2 sha1:fccce22
t3 sha1:147e64e
t4 sha1:a63e992
t1 sha256:b89f8b9
t2 sha256:5f12aad
t3 sha256:ea8b273
t4 sha256:14b7336
# unmodified
u1 sha1:35b9b25
u2 sha1:de345ab
u3 sha1:9af6654
u4 sha1:2901f77
u1 sha256:e3731be
u2 sha256:14fadf8
u3 sha256:736c4bc
u4 sha256:673e77d
# reordered
r1 sha1:aca177a
r2 sha1:14ad629
r3 sha1:ee58208
r4 sha1:307b27a
r1 sha256:f59d3aa
r2 sha256:fb261a8
r3 sha256:cb2649b
r4 sha256:958577e
# removed (deleted)
d1 sha1:7657159
d2 sha1:43d84d3
d3 sha1:a740396
d1 sha256:e312513
d2 sha256:eb19258
d3 sha256:1ccb3c1
# added
a1 sha1:2716022
a2 sha1:b62accd
a3 sha1:df46cfa
a4 sha1:3e64548
a5 sha1:12b4063
a1 sha256:d724f4d
a2 sha256:1de7762
a3 sha256:e159431
a4 sha256:b3e483c
a5 sha256:90866a7
# rebased
b1 sha1:cc9c443
b2 sha1:c5d9641
b3 sha1:28cc2b6
b4 sha1:5628ab7
b5 sha1:a31b12e
b1 sha256:a1a8717
b2 sha256:20a5862
b3 sha256:587172a
b4 sha256:2721c5d
b5 sha256:7b57864
# changed
c1 sha1:a4b3333
c2 sha1:f51d370
c3 sha1:0559556
c4 sha1:d966c5c
c1 sha256:f8c2b9d
c2 sha256:3fb6318
c3 sha256:168ab68
c4 sha256:3526539
# changed-message
m1 sha1:f686024
m2 sha1:4ab067d
m3 sha1:b9cb956
m4 sha1:8add5f1
m1 sha256:31e6281
m2 sha256:a06bf1b
m3 sha256:82dc654
m4 sha256:48470c5
# renamed
n1 sha1:f258d75
n2 sha1:017b62d
n3 sha1:3ce7af6
n4 sha1:1e6226b
n1 sha256:ad52114
n2 sha256:3b54c8f
n3 sha256:3b0a644
n4 sha256:e461653
# mode change
o1 sha1:4d39cb3
o2 sha1:26c107f
o3 sha1:4c1e0f5
o1 sha256:d0dd598
o2 sha256:c4a279e
o3 sha256:78459d7
# added and removed
s1 sha1:096b1ba
s2 sha1:d92e698
s3 sha1:9a1db4d
s4 sha1:fea3b5c
s1 sha256:a7f9134
s2 sha256:b4c2580
s3 sha256:1d62aa2
s4 sha256:48160e8
# Empty delimiter (included so lines match neatly)
__ sha1:-------
__ sha256:-------
EOF
'
test_expect_success 'simple A..B A..C (unmodified)' '
git range-diff --no-color master..topic master..unmodified \
>actual &&
cat >expect <<-EOF &&
1: $(test_oid t1) = 1: $(test_oid u1) s/5/A/
2: $(test_oid t2) = 2: $(test_oid u2) s/4/A/
3: $(test_oid t3) = 3: $(test_oid u3) s/11/B/
4: $(test_oid t4) = 4: $(test_oid u4) s/12/B/
EOF
test_cmp expect actual
'
test_expect_success 'simple B...C (unmodified)' '
git range-diff --no-color topic...unmodified >actual &&
# same "expect" as above
test_cmp expect actual
'
test_expect_success 'simple A B C (unmodified)' '
git range-diff --no-color master topic unmodified >actual &&
# same "expect" as above
test_cmp expect actual
'
test_expect_success 'trivial reordering' '
git range-diff --no-color master topic reordered >actual &&
cat >expect <<-EOF &&
1: $(test_oid t1) = 1: $(test_oid r1) s/5/A/
3: $(test_oid t3) = 2: $(test_oid r2) s/11/B/
4: $(test_oid t4) = 3: $(test_oid r3) s/12/B/
2: $(test_oid t2) = 4: $(test_oid r4) s/4/A/
EOF
test_cmp expect actual
'
test_expect_success 'removed a commit' '
git range-diff --no-color master topic removed >actual &&
cat >expect <<-EOF &&
1: $(test_oid t1) = 1: $(test_oid d1) s/5/A/
2: $(test_oid t2) < -: $(test_oid __) s/4/A/
3: $(test_oid t3) = 2: $(test_oid d2) s/11/B/
4: $(test_oid t4) = 3: $(test_oid d3) s/12/B/
EOF
test_cmp expect actual
'
test_expect_success 'added a commit' '
git range-diff --no-color master topic added >actual &&
cat >expect <<-EOF &&
1: $(test_oid t1) = 1: $(test_oid a1) s/5/A/
2: $(test_oid t2) = 2: $(test_oid a2) s/4/A/
-: $(test_oid __) > 3: $(test_oid a3) s/6/A/
3: $(test_oid t3) = 4: $(test_oid a4) s/11/B/
4: $(test_oid t4) = 5: $(test_oid a5) s/12/B/
EOF
test_cmp expect actual
'
test_expect_success 'new base, A B C' '
git range-diff --no-color master topic rebased >actual &&
cat >expect <<-EOF &&
1: $(test_oid t1) = 1: $(test_oid b1) s/5/A/
2: $(test_oid t2) = 2: $(test_oid b2) s/4/A/
3: $(test_oid t3) = 3: $(test_oid b3) s/11/B/
4: $(test_oid t4) = 4: $(test_oid b4) s/12/B/
EOF
test_cmp expect actual
'
test_expect_success 'new base, B...C' '
# this syntax includes the commits from master!
git range-diff --no-color topic...rebased >actual &&
cat >expect <<-EOF &&
-: $(test_oid __) > 1: $(test_oid b5) unrelated
1: $(test_oid t1) = 2: $(test_oid b1) s/5/A/
2: $(test_oid t2) = 3: $(test_oid b2) s/4/A/
3: $(test_oid t3) = 4: $(test_oid b3) s/11/B/
4: $(test_oid t4) = 5: $(test_oid b4) s/12/B/
EOF
test_cmp expect actual
'
test_expect_success 'changed commit' '
git range-diff --no-color topic...changed >actual &&
cat >expect <<-EOF &&
1: $(test_oid t1) = 1: $(test_oid c1) s/5/A/
2: $(test_oid t2) = 2: $(test_oid c2) s/4/A/
3: $(test_oid t3) ! 3: $(test_oid c3) s/11/B/
@@ file: A
9
10
-11
-+B
++BB
12
13
14
4: $(test_oid t4) ! 4: $(test_oid c4) s/12/B/
@@ file
@@ file: A
9
10
- B
+ BB
-12
+B
13
EOF
test_cmp expect actual
'
test_expect_success 'changed commit with --no-patch diff option' '
git range-diff --no-color --no-patch topic...changed >actual &&
cat >expect <<-EOF &&
1: $(test_oid t1) = 1: $(test_oid c1) s/5/A/
2: $(test_oid t2) = 2: $(test_oid c2) s/4/A/
3: $(test_oid t3) ! 3: $(test_oid c3) s/11/B/
4: $(test_oid t4) ! 4: $(test_oid c4) s/12/B/
EOF
test_cmp expect actual
'
test_expect_success 'changed commit with --stat diff option' '
git range-diff --no-color --stat topic...changed >actual &&
cat >expect <<-EOF &&
1: $(test_oid t1) = 1: $(test_oid c1) s/5/A/
a => b | 0
1 file changed, 0 insertions(+), 0 deletions(-)
2: $(test_oid t2) = 2: $(test_oid c2) s/4/A/
a => b | 0
1 file changed, 0 insertions(+), 0 deletions(-)
3: $(test_oid t3) ! 3: $(test_oid c3) s/11/B/
a => b | 0
1 file changed, 0 insertions(+), 0 deletions(-)
4: $(test_oid t4) ! 4: $(test_oid c4) s/12/B/
a => b | 0
1 file changed, 0 insertions(+), 0 deletions(-)
EOF
test_cmp expect actual
'
test_expect_success 'changed commit with sm config' '
git range-diff --no-color --submodule=log topic...changed >actual &&
cat >expect <<-EOF &&
1: $(test_oid t1) = 1: $(test_oid c1) s/5/A/
2: $(test_oid t2) = 2: $(test_oid c2) s/4/A/
3: $(test_oid t3) ! 3: $(test_oid c3) s/11/B/
@@ file: A
9
10
-11
-+B
++BB
12
13
14
4: $(test_oid t4) ! 4: $(test_oid c4) s/12/B/
@@ file
@@ file: A
9
10
- B
+ BB
-12
+B
13
EOF
test_cmp expect actual
'
test_expect_success 'renamed file' '
git range-diff --no-color --submodule=log topic...renamed-file >actual &&
sed s/Z/\ /g >expect <<-EOF &&
1: $(test_oid t1) = 1: $(test_oid n1) s/5/A/
2: $(test_oid t2) ! 2: $(test_oid n2) s/4/A/
@@ Metadata
ZAuthor: Thomas Rast <trast@inf.ethz.ch>
Z
Z ## Commit message ##
- s/4/A/
+ s/4/A/ + rename file
Z
- ## file ##
+ ## file => renamed-file ##
Z@@
Z 1
Z 2
3: $(test_oid t3) ! 3: $(test_oid n3) s/11/B/
@@ Metadata
Z ## Commit message ##
Z s/11/B/
Z
- ## file ##
-@@ file: A
+ ## renamed-file ##
+@@ renamed-file: A
Z 8
Z 9
Z 10
4: $(test_oid t4) ! 4: $(test_oid n4) s/12/B/
@@ Metadata
Z ## Commit message ##
Z s/12/B/
Z
- ## file ##
-@@ file: A
+ ## renamed-file ##
+@@ renamed-file: A
Z 9
Z 10
Z B
EOF
test_cmp expect actual
'
test_expect_success 'file with mode only change' '
git range-diff --no-color --submodule=log topic...mode-only-change >actual &&
sed s/Z/\ /g >expect <<-EOF &&
1: $(test_oid t2) ! 1: $(test_oid o1) s/4/A/
@@ Metadata
ZAuthor: Thomas Rast <trast@inf.ethz.ch>
Z
Z ## Commit message ##
- s/4/A/
+ s/4/A/ + add other-file
Z
Z ## file ##
Z@@
@@ file
Z A
Z 6
Z 7
+
+ ## other-file (new) ##
2: $(test_oid t3) ! 2: $(test_oid o2) s/11/B/
@@ Metadata
ZAuthor: Thomas Rast <trast@inf.ethz.ch>
Z
Z ## Commit message ##
- s/11/B/
+ s/11/B/ + mode change other-file
Z
Z ## file ##
Z@@ file: A
@@ file: A
Z 12
Z 13
Z 14
+
+ ## other-file (mode change 100644 => 100755) ##
3: $(test_oid t4) = 3: $(test_oid o3) s/12/B/
EOF
test_cmp expect actual
'
test_expect_success 'file added and later removed' '
git range-diff --no-color --submodule=log topic...added-removed >actual &&
sed s/Z/\ /g >expect <<-EOF &&
1: $(test_oid t1) = 1: $(test_oid s1) s/5/A/
2: $(test_oid t2) ! 2: $(test_oid s2) s/4/A/
@@ Metadata
ZAuthor: Thomas Rast <trast@inf.ethz.ch>
Z
Z ## Commit message ##
- s/4/A/
+ s/4/A/ + new-file
Z
Z ## file ##
Z@@
@@ file
Z A
Z 6
Z 7
+
+ ## new-file (new) ##
3: $(test_oid t3) ! 3: $(test_oid s3) s/11/B/
@@ Metadata
ZAuthor: Thomas Rast <trast@inf.ethz.ch>
Z
Z ## Commit message ##
- s/11/B/
+ s/11/B/ + remove file
Z
Z ## file ##
Z@@ file: A
@@ file: A
Z 12
Z 13
Z 14
+
+ ## new-file (deleted) ##
4: $(test_oid t4) = 4: $(test_oid s4) s/12/B/
EOF
test_cmp expect actual
'
test_expect_success 'no commits on one side' '
git commit --amend -m "new message" &&
git range-diff master HEAD@{1} HEAD
'
test_expect_success 'changed message' '
git range-diff --no-color topic...changed-message >actual &&
sed s/Z/\ /g >expect <<-EOF &&
1: $(test_oid t1) = 1: $(test_oid m1) s/5/A/
2: $(test_oid t2) ! 2: $(test_oid m2) s/4/A/
@@ Metadata
Z ## Commit message ##
Z s/4/A/
Z
+ Also a silly comment here!
+
Z ## file ##
Z@@
Z 1
3: $(test_oid t3) = 3: $(test_oid m3) s/11/B/
4: $(test_oid t4) = 4: $(test_oid m4) s/12/B/
EOF
test_cmp expect actual
'
test_expect_success 'dual-coloring' '
sed -e "s|^:||" >expect <<-EOF &&
:<YELLOW>1: $(test_oid c1) = 1: $(test_oid m1) s/5/A/<RESET>
:<RED>2: $(test_oid c2) <RESET><YELLOW>!<RESET><GREEN> 2: $(test_oid m2)<RESET><YELLOW> s/4/A/<RESET>
: <REVERSE><CYAN>@@<RESET> <RESET>Metadata<RESET>
: ## Commit message ##<RESET>
: s/4/A/<RESET>
: <RESET>
: <REVERSE><GREEN>+<RESET><BOLD> Also a silly comment here!<RESET>
: <REVERSE><GREEN>+<RESET>
: ## file ##<RESET>
: <CYAN> @@<RESET>
: 1<RESET>
:<RED>3: $(test_oid c3) <RESET><YELLOW>!<RESET><GREEN> 3: $(test_oid m3)<RESET><YELLOW> s/11/B/<RESET>
: <REVERSE><CYAN>@@<RESET> <RESET>file: A<RESET>
: 9<RESET>
: 10<RESET>
: <RED> -11<RESET>
: <REVERSE><RED>-<RESET><FAINT;GREEN>+BB<RESET>
: <REVERSE><GREEN>+<RESET><BOLD;GREEN>+B<RESET>
: 12<RESET>
: 13<RESET>
: 14<RESET>
:<RED>4: $(test_oid c4) <RESET><YELLOW>!<RESET><GREEN> 4: $(test_oid m4)<RESET><YELLOW> s/12/B/<RESET>
: <REVERSE><CYAN>@@<RESET> <RESET>file<RESET>
: <CYAN> @@ file: A<RESET>
: 9<RESET>
: 10<RESET>
: <REVERSE><RED>-<RESET><FAINT> BB<RESET>
: <REVERSE><GREEN>+<RESET><BOLD> B<RESET>
: <RED> -12<RESET>
: <GREEN> +B<RESET>
: 13<RESET>
EOF
git range-diff changed...changed-message --color --dual-color >actual.raw &&
test_decode_color >actual <actual.raw &&
test_cmp expect actual
'
for prev in topic master..topic
do
test_expect_success "format-patch --range-diff=$prev" '
git format-patch --cover-letter --range-diff=$prev \
master..unmodified >actual &&
test_when_finished "rm 000?-*" &&
test_line_count = 5 actual &&
test_i18ngrep "^Range-diff:$" 0000-* &&
grep "= 1: .* s/5/A" 0000-* &&
grep "= 2: .* s/4/A" 0000-* &&
grep "= 3: .* s/11/B" 0000-* &&
grep "= 4: .* s/12/B" 0000-*
'
done
test_expect_success 'format-patch --range-diff as commentary' '
git format-patch --range-diff=HEAD~1 HEAD~1 >actual &&
test_when_finished "rm 0001-*" &&
test_line_count = 1 actual &&
test_i18ngrep "^Range-diff:$" 0001-* &&
grep "> 1: .* new message" 0001-*
'
test_expect_success 'range-diff overrides diff.noprefix internally' '
git -c diff.noprefix=true range-diff HEAD^...
'
test_expect_success 'basic with modified format.pretty with suffix' '
git -c format.pretty="format:commit %H%d%n" range-diff \
master..topic master..unmodified
'
test_expect_success 'basic with modified format.pretty without "commit "' '
git -c format.pretty="format:%H%n" range-diff \
master..topic master..unmodified
'
test_expect_success 'range-diff compares notes by default' '
git notes add -m "topic note" topic &&
git notes add -m "unmodified note" unmodified &&
test_when_finished git notes remove topic unmodified &&
git range-diff --no-color master..topic master..unmodified \
>actual &&
sed s/Z/\ /g >expect <<-EOF &&
1: $(test_oid t1) = 1: $(test_oid u1) s/5/A/
2: $(test_oid t2) = 2: $(test_oid u2) s/4/A/
3: $(test_oid t3) = 3: $(test_oid u3) s/11/B/
4: $(test_oid t4) ! 4: $(test_oid u4) s/12/B/
@@ Commit message
Z
Z
Z ## Notes ##
- topic note
+ unmodified note
Z
Z ## file ##
Z@@ file: A
EOF
test_cmp expect actual
'
test_expect_success 'range-diff with --no-notes' '
git notes add -m "topic note" topic &&
git notes add -m "unmodified note" unmodified &&
test_when_finished git notes remove topic unmodified &&
git range-diff --no-color --no-notes master..topic master..unmodified \
>actual &&
cat >expect <<-EOF &&
1: $(test_oid t1) = 1: $(test_oid u1) s/5/A/
2: $(test_oid t2) = 2: $(test_oid u2) s/4/A/
3: $(test_oid t3) = 3: $(test_oid u3) s/11/B/
4: $(test_oid t4) = 4: $(test_oid u4) s/12/B/
EOF
test_cmp expect actual
'
test_expect_success 'range-diff with multiple --notes' '
git notes --ref=note1 add -m "topic note1" topic &&
git notes --ref=note1 add -m "unmodified note1" unmodified &&
test_when_finished git notes --ref=note1 remove topic unmodified &&
git notes --ref=note2 add -m "topic note2" topic &&
git notes --ref=note2 add -m "unmodified note2" unmodified &&
test_when_finished git notes --ref=note2 remove topic unmodified &&
git range-diff --no-color --notes=note1 --notes=note2 master..topic master..unmodified \
>actual &&
sed s/Z/\ /g >expect <<-EOF &&
1: $(test_oid t1) = 1: $(test_oid u1) s/5/A/
2: $(test_oid t2) = 2: $(test_oid u2) s/4/A/
3: $(test_oid t3) = 3: $(test_oid u3) s/11/B/
4: $(test_oid t4) ! 4: $(test_oid u4) s/12/B/
@@ Commit message
Z
Z
Z ## Notes (note1) ##
- topic note1
+ unmodified note1
Z
Z
Z ## Notes (note2) ##
- topic note2
+ unmodified note2
Z
Z ## file ##
Z@@ file: A
EOF
test_cmp expect actual
'
test_expect_success 'format-patch --range-diff does not compare notes by default' '
git notes add -m "topic note" topic &&
git notes add -m "unmodified note" unmodified &&
test_when_finished git notes remove topic unmodified &&
git format-patch --cover-letter --range-diff=$prev \
master..unmodified >actual &&
test_when_finished "rm 000?-*" &&
test_line_count = 5 actual &&
test_i18ngrep "^Range-diff:$" 0000-* &&
grep "= 1: .* s/5/A" 0000-* &&
grep "= 2: .* s/4/A" 0000-* &&
grep "= 3: .* s/11/B" 0000-* &&
grep "= 4: .* s/12/B" 0000-* &&
! grep "Notes" 0000-* &&
! grep "note" 0000-*
'
test_expect_success 'format-patch --range-diff with --no-notes' '
git notes add -m "topic note" topic &&
git notes add -m "unmodified note" unmodified &&
test_when_finished git notes remove topic unmodified &&
git format-patch --no-notes --cover-letter --range-diff=$prev \
master..unmodified >actual &&
test_when_finished "rm 000?-*" &&
test_line_count = 5 actual &&
test_i18ngrep "^Range-diff:$" 0000-* &&
grep "= 1: .* s/5/A" 0000-* &&
grep "= 2: .* s/4/A" 0000-* &&
grep "= 3: .* s/11/B" 0000-* &&
grep "= 4: .* s/12/B" 0000-* &&
! grep "Notes" 0000-* &&
! grep "note" 0000-*
'
test_expect_success 'format-patch --range-diff with --notes' '
git notes add -m "topic note" topic &&
git notes add -m "unmodified note" unmodified &&
test_when_finished git notes remove topic unmodified &&
git format-patch --notes --cover-letter --range-diff=$prev \
master..unmodified >actual &&
test_when_finished "rm 000?-*" &&
test_line_count = 5 actual &&
test_i18ngrep "^Range-diff:$" 0000-* &&
grep "= 1: .* s/5/A" 0000-* &&
grep "= 2: .* s/4/A" 0000-* &&
grep "= 3: .* s/11/B" 0000-* &&
grep "! 4: .* s/12/B" 0000-* &&
sed s/Z/\ /g >expect <<-EOF &&
@@ Commit message
Z
Z
Z ## Notes ##
- topic note
+ unmodified note
Z
Z ## file ##
Z@@ file: A
EOF
sed "/@@ Commit message/,/@@ file: A/!d" 0000-* >actual &&
test_cmp expect actual
'
test_expect_success 'format-patch --range-diff with format.notes config' '
git notes add -m "topic note" topic &&
git notes add -m "unmodified note" unmodified &&
test_when_finished git notes remove topic unmodified &&
test_config format.notes true &&
git format-patch --cover-letter --range-diff=$prev \
master..unmodified >actual &&
test_when_finished "rm 000?-*" &&
test_line_count = 5 actual &&
test_i18ngrep "^Range-diff:$" 0000-* &&
grep "= 1: .* s/5/A" 0000-* &&
grep "= 2: .* s/4/A" 0000-* &&
grep "= 3: .* s/11/B" 0000-* &&
grep "! 4: .* s/12/B" 0000-* &&
sed s/Z/\ /g >expect <<-EOF &&
@@ Commit message
Z
Z
Z ## Notes ##
- topic note
+ unmodified note
Z
Z ## file ##
Z@@ file: A
EOF
sed "/@@ Commit message/,/@@ file: A/!d" 0000-* >actual &&
test_cmp expect actual
'
test_expect_success 'format-patch --range-diff with multiple notes' '
git notes --ref=note1 add -m "topic note1" topic &&
git notes --ref=note1 add -m "unmodified note1" unmodified &&
test_when_finished git notes --ref=note1 remove topic unmodified &&
git notes --ref=note2 add -m "topic note2" topic &&
git notes --ref=note2 add -m "unmodified note2" unmodified &&
test_when_finished git notes --ref=note2 remove topic unmodified &&
git format-patch --notes=note1 --notes=note2 --cover-letter --range-diff=$prev \
master..unmodified >actual &&
test_when_finished "rm 000?-*" &&
test_line_count = 5 actual &&
test_i18ngrep "^Range-diff:$" 0000-* &&
grep "= 1: .* s/5/A" 0000-* &&
grep "= 2: .* s/4/A" 0000-* &&
grep "= 3: .* s/11/B" 0000-* &&
grep "! 4: .* s/12/B" 0000-* &&
sed s/Z/\ /g >expect <<-EOF &&
@@ Commit message
Z
Z
Z ## Notes (note1) ##
- topic note1
+ unmodified note1
Z
Z
Z ## Notes (note2) ##
- topic note2
+ unmodified note2
Z
Z ## file ##
Z@@ file: A
EOF
sed "/@@ Commit message/,/@@ file: A/!d" 0000-* >actual &&
test_cmp expect actual
'
test_done
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