csum-file: fix missing buf pointer update

diff --git a/t/t4008-diff-break-rewrite.sh b/t/t4008-diff-break-rewrite.sh
index 7189462a9ef23aed6a701526faf73c765f9c2639..040d0ddbd4c0f7a0b33337602be7e5910954e09f 100644 (file)
--- a/t/t4008-diff-break-rewrite.sh
+++ b/t/t4008-diff-break-rewrite.sh
@@ -22,20 +22,7 @@ four changes in total.
 Further, with -B and -M together, these should turn into two renames.
 '
 . ./test-lib.sh
-
-_x40='[0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f]'
-_x40="$_x40$_x40$_x40$_x40$_x40$_x40$_x40$_x40"
-sanitize_diff_raw='s/ '"$_x40"' '"$_x40"' \([CDNR]\)[0-9]*     / X X \1#       /'
-compare_diff_raw () {
-    # When heuristics are improved, the score numbers would change.
-    # Ignore them while comparing.
-    # Also we do not check SHA1 hash generation in this test, which
-    # is a job for t0000-basic.sh
-
-    sed -e "$sanitize_diff_raw" <"$1" >.tmp-1
-    sed -e "$sanitize_diff_raw" <"$2" >.tmp-2
-    diff -u .tmp-1 .tmp-2 && rm -f .tmp-1 .tmp-2
-}
+. ../diff-lib.sh ;# test-lib chdir's into trash
 
 test_expect_success \
     setup \
@@ -57,13 +44,12 @@ test_expect_success \
 
 cat >expected <<\EOF
 :100644 000000 f5deac7be59e7eeab8657fd9ae706fd6a57daed2 0000000000000000000000000000000000000000 D     file0
-:100644 000000 6ff87c4664981e4397625791c8ea3bbb5f2279a3 0000000000000000000000000000000000000000 D100  file1
-:000000 100644 0000000000000000000000000000000000000000 11e331465a89c394dc25c780de230043750c1ec8 N100  file1
+:100644 100644 6ff87c4664981e4397625791c8ea3bbb5f2279a3 11e331465a89c394dc25c780de230043750c1ec8 M100  file1
 EOF
 
 test_expect_success \
     'validate result of -B (#1)' \
-    'compare_diff_raw current expected'
+    'compare_diff_raw expected current'
 
 test_expect_success \
     'run diff with -B and -M' \
@@ -75,7 +61,7 @@ EOF
 
 test_expect_success \
     'validate result of -B -M (#2)' \
-    'compare_diff_raw current expected'
+    'compare_diff_raw expected current'
 
 test_expect_success \
     'swap file0 and file1' \
@@ -92,15 +78,13 @@ test_expect_success \
     'git-diff-cache -B "$tree" >current'
 
 cat >expected <<\EOF
-:100644 000000 f5deac7be59e7eeab8657fd9ae706fd6a57daed2 0000000000000000000000000000000000000000 D100  file0
-:000000 100644 0000000000000000000000000000000000000000 6ff87c4664981e4397625791c8ea3bbb5f2279a3 N100  file0
-:100644 000000 6ff87c4664981e4397625791c8ea3bbb5f2279a3 0000000000000000000000000000000000000000 D100  file1
-:000000 100644 0000000000000000000000000000000000000000 f5deac7be59e7eeab8657fd9ae706fd6a57daed2 N100  file1
+:100644 100644 f5deac7be59e7eeab8657fd9ae706fd6a57daed2 6ff87c4664981e4397625791c8ea3bbb5f2279a3 M100  file0
+:100644 100644 6ff87c4664981e4397625791c8ea3bbb5f2279a3 f5deac7be59e7eeab8657fd9ae706fd6a57daed2 M100  file1
 EOF
 
 test_expect_success \
     'validate result of -B (#3)' \
-    'compare_diff_raw current expected'
+    'compare_diff_raw expected current'
 
 test_expect_success \
     'run diff with -B and -M' \
@@ -113,7 +97,7 @@ EOF
 
 test_expect_success \
     'validate result of -B -M (#4)' \
-    'compare_diff_raw current expected'
+    'compare_diff_raw expected current'
 
 test_expect_success \
     'make file0 into something completely different' \
@@ -127,13 +111,12 @@ test_expect_success \
 
 cat >expected <<\EOF
 :100644 120000 f5deac7be59e7eeab8657fd9ae706fd6a57daed2 67be421f88824578857624f7b3dc75e99a8a1481 T     file0
-:100644 000000 6ff87c4664981e4397625791c8ea3bbb5f2279a3 0000000000000000000000000000000000000000 D100  file1
-:000000 100644 0000000000000000000000000000000000000000 f5deac7be59e7eeab8657fd9ae706fd6a57daed2 N100  file1
+:100644 100644 6ff87c4664981e4397625791c8ea3bbb5f2279a3 f5deac7be59e7eeab8657fd9ae706fd6a57daed2 M100  file1
 EOF
 
 test_expect_success \
     'validate result of -B (#5)' \
-    'compare_diff_raw current expected'
+    'compare_diff_raw expected current'
 
 test_expect_success \
     'run diff with -B' \
@@ -143,13 +126,12 @@ test_expect_success \
 # due to type differences.
 cat >expected <<\EOF
 :100644 120000 f5deac7be59e7eeab8657fd9ae706fd6a57daed2 67be421f88824578857624f7b3dc75e99a8a1481 T     file0
-:100644 000000 6ff87c4664981e4397625791c8ea3bbb5f2279a3 0000000000000000000000000000000000000000 D100  file1
-:000000 100644 0000000000000000000000000000000000000000 f5deac7be59e7eeab8657fd9ae706fd6a57daed2 N100  file1
+:100644 100644 6ff87c4664981e4397625791c8ea3bbb5f2279a3 f5deac7be59e7eeab8657fd9ae706fd6a57daed2 M100  file1
 EOF
 
 test_expect_success \
     'validate result of -B -M (#6)' \
-    'compare_diff_raw current expected'
+    'compare_diff_raw expected current'
 
 test_expect_success \
     'run diff with -M' \
@@ -164,7 +146,7 @@ EOF
 
 test_expect_success \
     'validate result of -M (#7)' \
-    'compare_diff_raw current expected'
+    'compare_diff_raw expected current'
 
 test_expect_success \
     'file1 edited to look like file0 and file0 rename-edited to file2' \
@@ -182,14 +164,13 @@ test_expect_success \
 
 cat >expected <<\EOF
 :100644 000000 f5deac7be59e7eeab8657fd9ae706fd6a57daed2 0000000000000000000000000000000000000000 D     file0
-:100644 000000 6ff87c4664981e4397625791c8ea3bbb5f2279a3 0000000000000000000000000000000000000000 D100  file1
-:000000 100644 0000000000000000000000000000000000000000 08bb2fb671deff4c03a4d4a0a1315dff98d5732c N100  file1
+:100644 100644 6ff87c4664981e4397625791c8ea3bbb5f2279a3 08bb2fb671deff4c03a4d4a0a1315dff98d5732c M100  file1
 :000000 100644 0000000000000000000000000000000000000000 f5deac7be59e7eeab8657fd9ae706fd6a57daed2 N     file2
 EOF
 
 test_expect_success \
     'validate result of -B (#8)' \
-    'compare_diff_raw current expected'
+    'compare_diff_raw expected current'
 
 test_expect_success \
     'run diff with -B -M' \
@@ -202,6 +183,6 @@ EOF
 
 test_expect_success \
     'validate result of -B -M (#9)' \
-    'compare_diff_raw current expected'
+    'compare_diff_raw expected current'
 
 test_done