attr.c: read .gitattributes from index as well.

This makes .gitattributes files to be read from the index when
they are not checked out to the work tree.  This is in line with
the way we always allowed low-level tools to operate in sparsely
checked out work tree in a reasonable way.

It swaps the order of new file creation and converting the blob
to work tree representation; otherwise when we are in the middle
of checking out .gitattributes we would notice an empty but
unwritten .gitattributes file in the work tree and will ignore
the copy in the index.

Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 81 insertions, 0 deletions

diff --git a/t/t0020-crlf.sh b/t/t0020-crlf.sh
index fe1dfd0..0807d9f 100755
--- a/t/t0020-crlf.sh
+++ b/t/t0020-crlf.sh
@@ -290,4 +290,85 @@ test_expect_success '.gitattributes says two and three are text' '
 	fi
 '
 
+test_expect_success 'in-tree .gitattributes (1)' '
+
+	echo "one -crlf" >>.gitattributes &&
+	git add .gitattributes &&
+	git commit -m "Add .gitattributes" &&
+
+	rm -rf tmp one dir .gitattributes patch.file three &&
+	git read-tree --reset -u HEAD &&
+
+	if remove_cr one >/dev/null
+	then
+		echo "Eh? one should not have CRLF"
+		false
+	else
+		: happy
+	fi &&
+	remove_cr three >/dev/null || {
+		echo "Eh? three should still have CRLF"
+		false
+	}
+'
+
+test_expect_success 'in-tree .gitattributes (2)' '
+
+	rm -rf tmp one dir .gitattributes patch.file three &&
+	git read-tree --reset HEAD &&
+	git checkout-index -f -q -u -a &&
+
+	if remove_cr one >/dev/null
+	then
+		echo "Eh? one should not have CRLF"
+		false
+	else
+		: happy
+	fi &&
+	remove_cr three >/dev/null || {
+		echo "Eh? three should still have CRLF"
+		false
+	}
+'
+
+test_expect_success 'in-tree .gitattributes (3)' '
+
+	rm -rf tmp one dir .gitattributes patch.file three &&
+	git read-tree --reset HEAD &&
+	git checkout-index -u .gitattributes &&
+	git checkout-index -u one dir/two three &&
+
+	if remove_cr one >/dev/null
+	then
+		echo "Eh? one should not have CRLF"
+		false
+	else
+		: happy
+	fi &&
+	remove_cr three >/dev/null || {
+		echo "Eh? three should still have CRLF"
+		false
+	}
+'
+
+test_expect_success 'in-tree .gitattributes (4)' '
+
+	rm -rf tmp one dir .gitattributes patch.file three &&
+	git read-tree --reset HEAD &&
+	git checkout-index -u one dir/two three &&
+	git checkout-index -u .gitattributes &&
+
+	if remove_cr one >/dev/null
+	then
+		echo "Eh? one should not have CRLF"
+		false
+	else
+		: happy
+	fi &&
+	remove_cr three >/dev/null || {
+		echo "Eh? three should still have CRLF"
+		false
+	}
+'
+
 test_done