perf: add test for writing the index

diff --git a/t/diff-lib.sh b/t/diff-lib.sh
index 4bddeb591ecc17ec532164d0d6cf1ad1a54eb996..c211dc40eed98fc58c953d2e3b1f7ba752f98a02 100644 (file)
--- a/t/diff-lib.sh
+++ b/t/diff-lib.sh
@@ -1,8 +1,6 @@
 :
 
-_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"' \([A-Z]\)[0-9]*  / X X \1#       /'
+sanitize_diff_raw='/^:/s/ '"\($_x40\)"' '"\($_x40\)"' \([A-Z]\)[0-9]*  / \1 \2 \3#     /'
 compare_diff_raw () {
     # When heuristics are improved, the score numbers would change.
     # Ignore them while comparing.