merge(3p/git): Merge git subtree at v2.29.2 r/1890

This also bumps the stable nixpkgs to 20.09 as of 2020-11-21, because
there is some breakage in the git build related to the netrc
credentials helper which someone has taken care of in nixpkgs.

The stable channel is not used for anything other than git, so this
should be fine.

Change-Id: I3575a19dab09e1e9556cf8231d717de9890484fb

1 files changed, 55 insertions, 39 deletions

diff --git a/third_party/git/t/t4034-diff-words.sh b/third_party/git/t/t4034-diff-words.sh
index 912df91226f2..0c8fb39cedaa 100755
--- a/third_party/git/t/t4034-diff-words.sh
+++ b/third_party/git/t/t4034-diff-words.sh
@@ -19,9 +19,11 @@ cat >post.simple <<-\EOF
 
 	aeff = aeff * ( aaa )
 EOF
-cat >expect.letter-runs-are-words <<-\EOF
+pre=$(git rev-parse --short $(git hash-object pre.simple))
+post=$(git rev-parse --short $(git hash-object post.simple))
+cat >expect.letter-runs-are-words <<-EOF
 	<BOLD>diff --git a/pre b/post<RESET>
-	<BOLD>index 330b04f..5ed8eff 100644<RESET>
+	<BOLD>index $pre..$post 100644<RESET>
 	<BOLD>--- a/pre<RESET>
 	<BOLD>+++ b/post<RESET>
 	<CYAN>@@ -1,3 +1,7 @@<RESET>
@@ -33,9 +35,9 @@ cat >expect.letter-runs-are-words <<-\EOF
 
 	<GREEN>aeff = aeff * ( aaa<RESET> )
 EOF
-cat >expect.non-whitespace-is-word <<-\EOF
+cat >expect.non-whitespace-is-word <<-EOF
 	<BOLD>diff --git a/pre b/post<RESET>
-	<BOLD>index 330b04f..5ed8eff 100644<RESET>
+	<BOLD>index $pre..$post 100644<RESET>
 	<BOLD>--- a/pre<RESET>
 	<BOLD>+++ b/post<RESET>
 	<CYAN>@@ -1,3 +1,7 @@<RESET>
@@ -49,9 +51,12 @@ cat >expect.non-whitespace-is-word <<-\EOF
 EOF
 
 word_diff () {
+	pre=$(git rev-parse --short $(git hash-object pre)) &&
+	post=$(git rev-parse --short $(git hash-object post)) &&
 	test_must_fail git diff --no-index "$@" pre post >output &&
 	test_decode_color <output >output.decrypted &&
-	test_cmp expect output.decrypted
+	sed -e "2s/index [^ ]*/index $pre..$post/" expect >expected
+	test_cmp expected output.decrypted
 }
 
 test_language_driver () {
@@ -77,9 +82,9 @@ test_expect_success 'set up pre and post with runs of whitespace' '
 '
 
 test_expect_success 'word diff with runs of whitespace' '
-	cat >expect <<-\EOF &&
+	cat >expect <<-EOF &&
 		<BOLD>diff --git a/pre b/post<RESET>
-		<BOLD>index 330b04f..5ed8eff 100644<RESET>
+		<BOLD>index $pre..$post 100644<RESET>
 		<BOLD>--- a/pre<RESET>
 		<BOLD>+++ b/post<RESET>
 		<CYAN>@@ -1,3 +1,7 @@<RESET>
@@ -97,9 +102,9 @@ test_expect_success 'word diff with runs of whitespace' '
 '
 
 test_expect_success '--word-diff=porcelain' '
-	sed 's/#.*$//' >expect <<-\EOF &&
+	sed "s/#.*$//" >expect <<-EOF &&
 		diff --git a/pre b/post
-		index 330b04f..5ed8eff 100644
+		index $pre..$post 100644
 		--- a/pre
 		+++ b/post
 		@@ -1,3 +1,7 @@
@@ -121,9 +126,9 @@ test_expect_success '--word-diff=porcelain' '
 '
 
 test_expect_success '--word-diff=plain' '
-	cat >expect <<-\EOF &&
+	cat >expect <<-EOF &&
 		diff --git a/pre b/post
-		index 330b04f..5ed8eff 100644
+		index $pre..$post 100644
 		--- a/pre
 		+++ b/post
 		@@ -1,3 +1,7 @@
@@ -140,9 +145,9 @@ test_expect_success '--word-diff=plain' '
 '
 
 test_expect_success '--word-diff=plain --color' '
-	cat >expect <<-\EOF &&
+	cat >expect <<-EOF &&
 		<BOLD>diff --git a/pre b/post<RESET>
-		<BOLD>index 330b04f..5ed8eff 100644<RESET>
+		<BOLD>index $pre..$post 100644<RESET>
 		<BOLD>--- a/pre<RESET>
 		<BOLD>+++ b/post<RESET>
 		<CYAN>@@ -1,3 +1,7 @@<RESET>
@@ -158,9 +163,9 @@ test_expect_success '--word-diff=plain --color' '
 '
 
 test_expect_success 'word diff without context' '
-	cat >expect <<-\EOF &&
+	cat >expect <<-EOF &&
 		<BOLD>diff --git a/pre b/post<RESET>
-		<BOLD>index 330b04f..5ed8eff 100644<RESET>
+		<BOLD>index $pre..$post 100644<RESET>
 		<BOLD>--- a/pre<RESET>
 		<BOLD>+++ b/post<RESET>
 		<CYAN>@@ -1 +1 @@<RESET>
@@ -207,9 +212,9 @@ test_expect_success 'command-line overrides config' '
 '
 
 test_expect_success 'command-line overrides config: --word-diff-regex' '
-	cat >expect <<-\EOF &&
+	cat >expect <<-EOF &&
 		<BOLD>diff --git a/pre b/post<RESET>
-		<BOLD>index 330b04f..5ed8eff 100644<RESET>
+		<BOLD>index $pre..$post 100644<RESET>
 		<BOLD>--- a/pre<RESET>
 		<BOLD>+++ b/post<RESET>
 		<CYAN>@@ -1,3 +1,7 @@<RESET>
@@ -234,9 +239,9 @@ test_expect_success 'setup: remove diff driver regex' '
 '
 
 test_expect_success 'use configured regex' '
-	cat >expect <<-\EOF &&
+	cat >expect <<-EOF &&
 		<BOLD>diff --git a/pre b/post<RESET>
-		<BOLD>index 330b04f..5ed8eff 100644<RESET>
+		<BOLD>index $pre..$post 100644<RESET>
 		<BOLD>--- a/pre<RESET>
 		<BOLD>+++ b/post<RESET>
 		<CYAN>@@ -1,3 +1,7 @@<RESET>
@@ -254,9 +259,11 @@ test_expect_success 'use configured regex' '
 test_expect_success 'test parsing words for newline' '
 	echo "aaa (aaa)" >pre &&
 	echo "aaa (aaa) aaa" >post &&
-	cat >expect <<-\EOF &&
+	pre=$(git rev-parse --short $(git hash-object pre)) &&
+	post=$(git rev-parse --short $(git hash-object post)) &&
+	cat >expect <<-EOF &&
 		<BOLD>diff --git a/pre b/post<RESET>
-		<BOLD>index c29453b..be22f37 100644<RESET>
+		<BOLD>index $pre..$post 100644<RESET>
 		<BOLD>--- a/pre<RESET>
 		<BOLD>+++ b/post<RESET>
 		<CYAN>@@ -1 +1 @@<RESET>
@@ -268,9 +275,11 @@ test_expect_success 'test parsing words for newline' '
 test_expect_success 'test when words are only removed at the end' '
 	echo "(:" >pre &&
 	echo "(" >post &&
-	cat >expect <<-\EOF &&
+	pre=$(git rev-parse --short $(git hash-object pre)) &&
+	post=$(git rev-parse --short $(git hash-object post)) &&
+	cat >expect <<-EOF &&
 		<BOLD>diff --git a/pre b/post<RESET>
-		<BOLD>index 289cb9d..2d06f37 100644<RESET>
+		<BOLD>index $pre..$post 100644<RESET>
 		<BOLD>--- a/pre<RESET>
 		<BOLD>+++ b/post<RESET>
 		<CYAN>@@ -1 +1 @@<RESET>
@@ -282,9 +291,11 @@ test_expect_success 'test when words are only removed at the end' '
 test_expect_success '--word-diff=none' '
 	echo "(:" >pre &&
 	echo "(" >post &&
-	cat >expect <<-\EOF &&
+	pre=$(git rev-parse --short $(git hash-object pre)) &&
+	post=$(git rev-parse --short $(git hash-object post)) &&
+	cat >expect <<-EOF &&
 		diff --git a/pre b/post
-		index 289cb9d..2d06f37 100644
+		index $pre..$post 100644
 		--- a/pre
 		+++ b/post
 		@@ -1 +1 @@
@@ -303,6 +314,7 @@ test_language_driver bibtex
 test_language_driver cpp
 test_language_driver csharp
 test_language_driver css
+test_language_driver dts
 test_language_driver fortran
 test_language_driver html
 test_language_driver java
@@ -316,16 +328,6 @@ test_language_driver ruby
 test_language_driver tex
 
 test_expect_success 'word-diff with diff.sbe' '
-	cat >expect <<-\EOF &&
-	diff --git a/pre b/post
-	index a1a53b5..bc8fe6d 100644
-	--- a/pre
-	+++ b/post
-	@@ -1,3 +1,3 @@
-	a
-
-	[-b-]{+c+}
-	EOF
 	cat >pre <<-\EOF &&
 	a
 
@@ -336,21 +338,35 @@ test_expect_success 'word-diff with diff.sbe' '
 
 	c
 	EOF
+	pre=$(git rev-parse --short $(git hash-object pre)) &&
+	post=$(git rev-parse --short $(git hash-object post)) &&
+	cat >expect <<-EOF &&
+	diff --git a/pre b/post
+	index $pre..$post 100644
+	--- a/pre
+	+++ b/post
+	@@ -1,3 +1,3 @@
+	a
+
+	[-b-]{+c+}
+	EOF
 	test_config diff.suppress-blank-empty true &&
 	word_diff --word-diff=plain
 '
 
 test_expect_success 'word-diff with no newline at EOF' '
-	cat >expect <<-\EOF &&
+	printf "%s" "a a a a a" >pre &&
+	printf "%s" "a a ab a a" >post &&
+	pre=$(git rev-parse --short $(git hash-object pre)) &&
+	post=$(git rev-parse --short $(git hash-object post)) &&
+	cat >expect <<-EOF &&
 	diff --git a/pre b/post
-	index 7bf316e..3dd0303 100644
+	index $pre..$post 100644
 	--- a/pre
 	+++ b/post
 	@@ -1 +1 @@
 	a a [-a-]{+ab+} a a
 	EOF
-	printf "%s" "a a a a a" >pre &&
-	printf "%s" "a a ab a a" >post &&
 	word_diff --word-diff=plain
 '