merge(third_party/git): Merge squashed git subtree at v2.23.0 r/373

Merge commit '1b593e1ea4d2af0f6444d9a7788d5d99abd6fde5' as 'third_party/git'

1 files changed, 69 insertions, 0 deletions

diff --git a/third_party/git/t/t4004-diff-rename-symlink.sh b/third_party/git/t/t4004-diff-rename-symlink.sh
new file mode 100755
index 000000000000..6e562c80d12f
--- /dev/null
+++ b/third_party/git/t/t4004-diff-rename-symlink.sh
@@ -0,0 +1,69 @@
+#!/bin/sh
+#
+# Copyright (c) 2005 Junio C Hamano
+#
+
+test_description='More rename detection tests.
+
+The rename detection logic should be able to detect pure rename or
+copy of symbolic links, but should not produce rename/copy followed
+by an edit for them.
+'
+. ./test-lib.sh
+. "$TEST_DIRECTORY"/diff-lib.sh
+
+test_expect_success SYMLINKS \
+    'prepare reference tree' \
+    'echo xyzzy | tr -d '\\\\'012 >yomin &&
+     ln -s xyzzy frotz &&
+    git update-index --add frotz yomin &&
+    tree=$(git write-tree) &&
+    echo $tree'
+
+test_expect_success SYMLINKS \
+    'prepare work tree' \
+    'mv frotz rezrov &&
+     rm -f yomin &&
+     ln -s xyzzy nitfol &&
+     ln -s xzzzy bozbar &&
+    git update-index --add --remove frotz rezrov nitfol bozbar yomin'
+
+# tree has frotz pointing at xyzzy, and yomin that contains xyzzy to
+# confuse things.  work tree has rezrov (xyzzy) nitfol (xyzzy) and
+# bozbar (xzzzy).
+# rezrov and nitfol are rename/copy of frotz and bozbar should be
+# a new creation.
+
+test_expect_success SYMLINKS 'setup diff output' "
+    GIT_DIFF_OPTS=--unified=0 git diff-index -C -p $tree >current &&
+    cat >expected <<\EOF
+diff --git a/bozbar b/bozbar
+new file mode 120000
+--- /dev/null
++++ b/bozbar
+@@ -0,0 +1 @@
++xzzzy
+\ No newline at end of file
+diff --git a/frotz b/nitfol
+similarity index 100%
+copy from frotz
+copy to nitfol
+diff --git a/frotz b/rezrov
+similarity index 100%
+rename from frotz
+rename to rezrov
+diff --git a/yomin b/yomin
+deleted file mode 100644
+--- a/yomin
++++ /dev/null
+@@ -1 +0,0 @@
+-xyzzy
+\ No newline at end of file
+EOF
+"
+
+test_expect_success SYMLINKS \
+    'validate diff output' \
+    'compare_diff_patch current expected'
+
+test_done