Merge branch 'jc/attr'

* 'jc/attr': (28 commits)
  lockfile: record the primary process.
  convert.c: restructure the attribute checking part.
  Fix bogus linked-list management for user defined merge drivers.
  Simplify calling of CR/LF conversion routines
  Document gitattributes(5)
  Update 'crlf' attribute semantics.
  Documentation: support manual section (5) - file formats.
  Simplify code to find recursive merge driver.
  Counto-fix in merge-recursive
  Fix funny types used in attribute value representation
  Allow low-level driver to specify different behaviour during internal merge.
  Custom low-level merge driver: change the configuration scheme.
  Allow the default low-level merge driver to be configured.
  Custom low-level merge driver support.
  Add a demonstration/test of customized merge.
  Allow specifying specialized merge-backend per path.
  merge-recursive: separate out xdl_merge() interface.
  Allow more than true/false to attributes.
  Document git-check-attr
  Change attribute negation marker from '!' to '-'.
  ...

2 files changed, 231 insertions, 10 deletions

diff --git a/t/t0020-crlf.sh b/t/t0020-crlf.sh
index 723b29ad17..fe1dfd08a0 100755
--- a/t/t0020-crlf.sh
+++ b/t/t0020-crlf.sh
@@ -4,6 +4,10 @@ test_description='CRLF conversion'
 
 . ./test-lib.sh
 
+q_to_nul () {
+	tr Q '\0'
+}
+
 append_cr () {
 	sed -e 's/$/Q/' | tr Q '\015'
 }
@@ -20,6 +24,7 @@ test_expect_success setup '
 	for w in Hello world how are you; do echo $w; done >one &&
 	mkdir dir &&
 	for w in I am very very fine thank you; do echo $w; done >dir/two &&
+	for w in Oh here is NULQin text here; do echo $w; done | q_to_nul >three &&
 	git add . &&
 
 	git commit -m initial &&
@@ -27,6 +32,7 @@ test_expect_success setup '
 	one=`git rev-parse HEAD:one` &&
 	dir=`git rev-parse HEAD:dir` &&
 	two=`git rev-parse HEAD:dir/two` &&
+	three=`git rev-parse HEAD:three` &&
 
 	for w in Some extra lines here; do echo $w; done >>one &&
 	git diff >patch.file &&
@@ -38,7 +44,7 @@ test_expect_success setup '
 
 test_expect_success 'update with autocrlf=input' '
 
-	rm -f tmp one dir/two &&
+	rm -f tmp one dir/two three &&
 	git read-tree --reset -u HEAD &&
 	git repo-config core.autocrlf input &&
 
@@ -62,7 +68,7 @@ test_expect_success 'update with autocrlf=input' '
 
 test_expect_success 'update with autocrlf=true' '
 
-	rm -f tmp one dir/two &&
+	rm -f tmp one dir/two three &&
 	git read-tree --reset -u HEAD &&
 	git repo-config core.autocrlf true &&
 
@@ -86,7 +92,7 @@ test_expect_success 'update with autocrlf=true' '
 
 test_expect_success 'checkout with autocrlf=true' '
 
-	rm -f tmp one dir/two &&
+	rm -f tmp one dir/two three &&
 	git repo-config core.autocrlf true &&
 	git read-tree --reset -u HEAD &&
 
@@ -110,7 +116,7 @@ test_expect_success 'checkout with autocrlf=true' '
 
 test_expect_success 'checkout with autocrlf=input' '
 
-	rm -f tmp one dir/two &&
+	rm -f tmp one dir/two three &&
 	git repo-config core.autocrlf input &&
 	git read-tree --reset -u HEAD &&
 
@@ -136,7 +142,7 @@ test_expect_success 'checkout with autocrlf=input' '
 
 test_expect_success 'apply patch (autocrlf=input)' '
 
-	rm -f tmp one dir/two &&
+	rm -f tmp one dir/two three &&
 	git repo-config core.autocrlf input &&
 	git read-tree --reset -u HEAD &&
 
@@ -149,7 +155,7 @@ test_expect_success 'apply patch (autocrlf=input)' '
 
 test_expect_success 'apply patch --cached (autocrlf=input)' '
 
-	rm -f tmp one dir/two &&
+	rm -f tmp one dir/two three &&
 	git repo-config core.autocrlf input &&
 	git read-tree --reset -u HEAD &&
 
@@ -162,7 +168,7 @@ test_expect_success 'apply patch --cached (autocrlf=input)' '
 
 test_expect_success 'apply patch --index (autocrlf=input)' '
 
-	rm -f tmp one dir/two &&
+	rm -f tmp one dir/two three &&
 	git repo-config core.autocrlf input &&
 	git read-tree --reset -u HEAD &&
 
@@ -176,7 +182,7 @@ test_expect_success 'apply patch --index (autocrlf=input)' '
 
 test_expect_success 'apply patch (autocrlf=true)' '
 
-	rm -f tmp one dir/two &&
+	rm -f tmp one dir/two three &&
 	git repo-config core.autocrlf true &&
 	git read-tree --reset -u HEAD &&
 
@@ -189,7 +195,7 @@ test_expect_success 'apply patch (autocrlf=true)' '
 
 test_expect_success 'apply patch --cached (autocrlf=true)' '
 
-	rm -f tmp one dir/two &&
+	rm -f tmp one dir/two three &&
 	git repo-config core.autocrlf true &&
 	git read-tree --reset -u HEAD &&
 
@@ -202,7 +208,7 @@ test_expect_success 'apply patch --cached (autocrlf=true)' '
 
 test_expect_success 'apply patch --index (autocrlf=true)' '
 
-	rm -f tmp one dir/two &&
+	rm -f tmp one dir/two three &&
 	git repo-config core.autocrlf true &&
 	git read-tree --reset -u HEAD &&
 
@@ -214,4 +220,74 @@ test_expect_success 'apply patch --index (autocrlf=true)' '
 	}
 '
 
+test_expect_success '.gitattributes says two is binary' '
+
+	rm -f tmp one dir/two three &&
+	echo "two -crlf" >.gitattributes &&
+	git repo-config core.autocrlf true &&
+	git read-tree --reset -u HEAD &&
+
+	if remove_cr dir/two >/dev/null
+	then
+		echo "Huh?"
+		false
+	else
+		: happy
+	fi &&
+
+	if remove_cr one >/dev/null
+	then
+		: happy
+	else
+		echo "Huh?"
+		false
+	fi &&
+
+	if remove_cr three >/dev/null
+	then
+		echo "Huh?"
+		false
+	else
+		: happy
+	fi
+'
+
+test_expect_success '.gitattributes says two is input' '
+
+	rm -f tmp one dir/two three &&
+	echo "two crlf=input" >.gitattributes &&
+	git read-tree --reset -u HEAD &&
+
+	if remove_cr dir/two >/dev/null
+	then
+		echo "Huh?"
+		false
+	else
+		: happy
+	fi
+'
+
+test_expect_success '.gitattributes says two and three are text' '
+
+	rm -f tmp one dir/two three &&
+	echo "t* crlf" >.gitattributes &&
+	git read-tree --reset -u HEAD &&
+
+	if remove_cr dir/two >/dev/null
+	then
+		: happy
+	else
+		echo "Huh?"
+		false
+	fi &&
+
+	if remove_cr three >/dev/null
+	then
+		: happy
+	else
+		echo "Huh?"
+		false
+	fi
+'
+
 test_done
diff --git a/t/t6026-merge-attr.sh b/t/t6026-merge-attr.sh
new file mode 100755
index 0000000000..56fc341768
--- /dev/null
+++ b/t/t6026-merge-attr.sh
@@ -0,0 +1,145 @@
+#!/bin/sh
+#
+# Copyright (c) 2007 Junio C Hamano
+#
+
+test_description='per path merge controlled by merge attribute'
+
+. ./test-lib.sh
+
+test_expect_success setup '
+
+	for f in text binary union
+	do
+		echo Initial >$f && git add $f || break
+	done &&
+	test_tick &&
+	git commit -m Initial &&
+
+	git branch side &&
+	for f in text binary union
+	do
+		echo Master >>$f && git add $f || break
+	done &&
+	test_tick &&
+	git commit -m Master &&
+
+	git checkout side &&
+	for f in text binary union
+	do
+		echo Side >>$f && git add $f || break
+	done &&
+	test_tick &&
+	git commit -m Side &&
+
+	git tag anchor
+'
+
+test_expect_success merge '
+
+	{
+		echo "binary -merge"
+		echo "union merge=union"
+	} >.gitattributes &&
+
+	if git merge master
+	then
+		echo Gaah, should have conflicted
+		false
+	else
+		echo Ok, conflicted.
+	fi
+'
+
+test_expect_success 'check merge result in index' '
+
+	git ls-files -u | grep binary &&
+	git ls-files -u | grep text &&
+	! (git ls-files -u | grep union)
+
+'
+
+test_expect_success 'check merge result in working tree' '
+
+	git cat-file -p HEAD:binary >binary-orig &&
+	grep "<<<<<<<" text &&
+	cmp binary-orig binary &&
+	! grep "<<<<<<<" union &&
+	grep Master union &&
+	grep Side union
+
+'
+
+cat >./custom-merge <<\EOF
+#!/bin/sh
+
+orig="$1" ours="$2" theirs="$3" exit="$4"
+(
+	echo "orig is $orig"
+	echo "ours is $ours"
+	echo "theirs is $theirs"
+	echo "=== orig ==="
+	cat "$orig"
+	echo "=== ours ==="
+	cat "$ours"
+	echo "=== theirs ==="
+	cat "$theirs"
+) >"$ours+"
+cat "$ours+" >"$ours"
+rm -f "$ours+"
+exit "$exit"
+EOF
+chmod +x ./custom-merge
+
+test_expect_success 'custom merge backend' '
+
+	echo "* merge=union" >.gitattributes &&
+	echo "text merge=custom" >>.gitattributes &&
+
+	git reset --hard anchor &&
+	git config --replace-all \
+	merge.custom.driver "./custom-merge %O %A %B 0" &&
+	git config --replace-all \
+	merge.custom.name "custom merge driver for testing" &&
+
+	git merge master &&
+
+	cmp binary union &&
+	sed -e 1,3d text >check-1 &&
+	o=$(git-unpack-file master^:text) &&
+	a=$(git-unpack-file side^:text) &&
+	b=$(git-unpack-file master:text) &&
+	sh -c "./custom-merge $o $a $b 0" &&
+	sed -e 1,3d $a >check-2 &&
+	cmp check-1 check-2 &&
+	rm -f $o $a $b
+'
+
+test_expect_success 'custom merge backend' '
+
+	git reset --hard anchor &&
+	git config --replace-all \
+	merge.custom.driver "./custom-merge %O %A %B 1" &&
+	git config --replace-all \
+	merge.custom.name "custom merge driver for testing" &&
+
+	if git merge master
+	then
+		echo "Eh? should have conflicted"
+		false
+	else
+		echo "Ok, conflicted"
+	fi &&
+
+	cmp binary union &&
+	sed -e 1,3d text >check-1 &&
+	o=$(git-unpack-file master^:text) &&
+	a=$(git-unpack-file anchor:text) &&
+	b=$(git-unpack-file master:text) &&
+	sh -c "./custom-merge $o $a $b 0" &&
+	sed -e 1,3d $a >check-2 &&
+	cmp check-1 check-2 &&
+	rm -f $o $a $b
+'
+
+test_done