t4012: modernize style for quoting

This quoting style is used by all newly added test code.

Signed-off-by: Alexander Strasser <eclipse7@gmx.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t/t4012-diff-binary.sh

@@ -15,13 +15,14 @@ cat >expect.binary-numstat <<\EOF
 -	-	d
 EOF
 
-test_expect_success 'prepare repository' \
-	'echo AIT >a && echo BIT >b && echo CIT >c && echo DIT >d &&
+test_expect_success 'prepare repository' '
+	 echo AIT >a && echo BIT >b && echo CIT >c && echo DIT >d &&
 	 git update-index --add a b c d &&
 	 echo git >a &&
 	 cat "$TEST_DIRECTORY"/test-binary-1.png >b &&
 	 echo git >c &&
-	 cat b b >d'
+	 cat b b >d
+'
 
 cat > expected <<\EOF
  a |    2 +-
@@ -62,8 +63,8 @@ test_expect_success 'apply --numstat understands diff --binary format' '
 
 # apply needs to be able to skip the binary material correctly
 # in order to report the line number of a corrupt patch.
-test_expect_success 'apply detecting corrupt patch correctly' \
-	'git diff | sed -e 's/-CIT/xCIT/' >broken &&
+test_expect_success 'apply detecting corrupt patch correctly' '
+	 git diff | sed -e 's/-CIT/xCIT/' >broken &&
 	 if git apply --stat --summary broken 2>detected
 	 then
 		echo unhappy - should have detected an error
@@ -74,10 +75,11 @@ test_expect_success 'apply detecting corrupt patch correctly' \
 	 detected=`cat detected` &&
 	 detected=`expr "$detected" : "fatal.*at line \\([0-9]*\\)\$"` &&
 	 detected=`sed -ne "${detected}p" broken` &&
-	 test "$detected" = xCIT'
+	 test "$detected" = xCIT
+'
 
-test_expect_success 'apply detecting corrupt patch correctly' \
-	'git diff --binary | sed -e 's/-CIT/xCIT/' >broken &&
+test_expect_success 'apply detecting corrupt patch correctly' '
+	 git diff --binary | sed -e 's/-CIT/xCIT/' >broken &&
 	 if git apply --stat --summary broken 2>detected
 	 then
 		echo unhappy - should have detected an error
@@ -88,23 +90,26 @@ test_expect_success 'apply detecting corrupt patch correctly' \
 	 detected=`cat detected` &&
 	 detected=`expr "$detected" : "fatal.*at line \\([0-9]*\\)\$"` &&
 	 detected=`sed -ne "${detected}p" broken` &&
-	 test "$detected" = xCIT'
+	 test "$detected" = xCIT
+'
 
 test_expect_success 'initial commit' 'git commit -a -m initial'
 
 # Try removal (b), modification (d), and creation (e).
-test_expect_success 'diff-index with --binary' \
-	'echo AIT >a && mv b e && echo CIT >c && cat e >d &&
+test_expect_success 'diff-index with --binary' '
+	 echo AIT >a && mv b e && echo CIT >c && cat e >d &&
 	 git update-index --add --remove a b c d e &&
 	 tree0=`git write-tree` &&
 	 git diff --cached --binary >current &&
-	 git apply --stat --summary current'
+	 git apply --stat --summary current
+'
 
-test_expect_success 'apply binary patch' \
-	'git reset --hard &&
+test_expect_success 'apply binary patch' '
+	 git reset --hard &&
 	 git apply --binary --index <current &&
 	 tree1=`git write-tree` &&
-	 test "$tree1" = "$tree0"'
+	 test "$tree1" = "$tree0"
+'
 
 test_expect_success 'diff --no-index with binary creation' '
 	echo Q | q_to_nul >binary &&