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, 177 insertions, 0 deletions

diff --git a/third_party/git/t/t2072-restore-pathspec-file.sh b/third_party/git/t/t2072-restore-pathspec-file.sh
new file mode 100755
index 0000000000..b48345bf95
--- /dev/null
+++ b/third_party/git/t/t2072-restore-pathspec-file.sh
@@ -0,0 +1,177 @@
+#!/bin/sh
+
+test_description='restore --pathspec-from-file'
+
+. ./test-lib.sh
+
+test_tick
+
+test_expect_success setup '
+	test_commit file0 &&
+
+	mkdir dir1 &&
+	echo 1 >dir1/file &&
+	echo 1 >fileA.t &&
+	echo 1 >fileB.t &&
+	echo 1 >fileC.t &&
+	echo 1 >fileD.t &&
+	git add dir1 fileA.t fileB.t fileC.t fileD.t &&
+	git commit -m "files 1" &&
+
+	echo 2 >dir1/file &&
+	echo 2 >fileA.t &&
+	echo 2 >fileB.t &&
+	echo 2 >fileC.t &&
+	echo 2 >fileD.t &&
+	git add dir1 fileA.t fileB.t fileC.t fileD.t &&
+	git commit -m "files 2" &&
+
+	git tag checkpoint
+'
+
+restore_checkpoint () {
+	git reset --hard checkpoint
+}
+
+verify_expect () {
+	git status --porcelain --untracked-files=no -- dir1 fileA.t fileB.t fileC.t fileD.t >actual &&
+	test_cmp expect actual
+}
+
+test_expect_success '--pathspec-from-file from stdin' '
+	restore_checkpoint &&
+
+	echo fileA.t | git restore --pathspec-from-file=- --source=HEAD^1 &&
+
+	cat >expect <<-\EOF &&
+	 M fileA.t
+	EOF
+	verify_expect
+'
+
+test_expect_success '--pathspec-from-file from file' '
+	restore_checkpoint &&
+
+	echo fileA.t >list &&
+	git restore --pathspec-from-file=list --source=HEAD^1 &&
+
+	cat >expect <<-\EOF &&
+	 M fileA.t
+	EOF
+	verify_expect
+'
+
+test_expect_success 'NUL delimiters' '
+	restore_checkpoint &&
+
+	printf "fileA.t\0fileB.t\0" | git restore --pathspec-from-file=- --pathspec-file-nul --source=HEAD^1 &&
+
+	cat >expect <<-\EOF &&
+	 M fileA.t
+	 M fileB.t
+	EOF
+	verify_expect
+'
+
+test_expect_success 'LF delimiters' '
+	restore_checkpoint &&
+
+	printf "fileA.t\nfileB.t\n" | git restore --pathspec-from-file=- --source=HEAD^1 &&
+
+	cat >expect <<-\EOF &&
+	 M fileA.t
+	 M fileB.t
+	EOF
+	verify_expect
+'
+
+test_expect_success 'no trailing delimiter' '
+	restore_checkpoint &&
+
+	printf "fileA.t\nfileB.t" | git restore --pathspec-from-file=- --source=HEAD^1 &&
+
+	cat >expect <<-\EOF &&
+	 M fileA.t
+	 M fileB.t
+	EOF
+	verify_expect
+'
+
+test_expect_success 'CRLF delimiters' '
+	restore_checkpoint &&
+
+	printf "fileA.t\r\nfileB.t\r\n" | git restore --pathspec-from-file=- --source=HEAD^1 &&
+
+	cat >expect <<-\EOF &&
+	 M fileA.t
+	 M fileB.t
+	EOF
+	verify_expect
+'
+
+test_expect_success 'quotes' '
+	restore_checkpoint &&
+
+	cat >list <<-\EOF &&
+	"file\101.t"
+	EOF
+
+	git restore --pathspec-from-file=list --source=HEAD^1 &&
+
+	cat >expect <<-\EOF &&
+	 M fileA.t
+	EOF
+	verify_expect
+'
+
+test_expect_success 'quotes not compatible with --pathspec-file-nul' '
+	restore_checkpoint &&
+
+	cat >list <<-\EOF &&
+	"file\101.t"
+	EOF
+
+	test_must_fail git restore --pathspec-from-file=list --pathspec-file-nul --source=HEAD^1
+'
+
+test_expect_success 'only touches what was listed' '
+	restore_checkpoint &&
+
+	printf "fileB.t\nfileC.t\n" | git restore --pathspec-from-file=- --source=HEAD^1 &&
+
+	cat >expect <<-\EOF &&
+	 M fileB.t
+	 M fileC.t
+	EOF
+	verify_expect
+'
+
+test_expect_success 'error conditions' '
+	restore_checkpoint &&
+	echo fileA.t >list &&
+	>empty_list &&
+
+	test_must_fail git restore --pathspec-from-file=list --patch --source=HEAD^1 2>err &&
+	test_i18ngrep -e "--pathspec-from-file is incompatible with --patch" err &&
+
+	test_must_fail git restore --pathspec-from-file=list --source=HEAD^1 -- fileA.t 2>err &&
+	test_i18ngrep -e "--pathspec-from-file is incompatible with pathspec arguments" err &&
+
+	test_must_fail git restore --pathspec-file-nul --source=HEAD^1 2>err &&
+	test_i18ngrep -e "--pathspec-file-nul requires --pathspec-from-file" err &&
+
+	test_must_fail git restore --pathspec-from-file=empty_list --source=HEAD^1 2>err &&
+	test_i18ngrep -e "you must specify path(s) to restore" err
+'
+
+test_expect_success 'wildcard pathspec matches file in subdirectory' '
+	restore_checkpoint &&
+
+	echo "*file" | git restore --pathspec-from-file=- --source=HEAD^1 &&
+	cat >expect <<-\EOF &&
+	 M dir1/file
+	EOF
+	verify_expect
+'
+
+test_done