t5532: use write_script

diff --git a/t/t7003-filter-branch.sh b/t/t7003-filter-branch.sh
index edb834187a1e4be0a3a0cc52157e09233d3644e1..cb8fbd8e5e03a0ff5a176cc947419c357fd65d99 100755 (executable)
--- a/t/t7003-filter-branch.sh
+++ b/t/t7003-filter-branch.sh
@@ -395,7 +395,7 @@ test_expect_success 'setup submodule' '
        git branch original HEAD
 '
 
-orig_head=`git show-ref --hash --head HEAD`
+orig_head=$(git show-ref --hash --head HEAD)
 
 test_expect_success 'rewrite submodule with another content' '
        git filter-branch --tree-filter "test -d submod && {
@@ -404,7 +404,7 @@ test_expect_success 'rewrite submodule with another content' '
                                         mkdir submod &&
                                         : > submod/file
                                         } || :" HEAD &&
-       test $orig_head != `git show-ref --hash --head HEAD`
+       test $orig_head != $(git show-ref --hash --head HEAD)
 '
 
 test_expect_success 'replace submodule revision' '
@@ -413,7 +413,7 @@ test_expect_success 'replace submodule revision' '
            "if git ls-files --error-unmatch -- submod > /dev/null 2>&1
             then git update-index --cacheinfo 160000 0123456789012345678901234567890123456789 submod
             fi" HEAD &&
-       test $orig_head != `git show-ref --hash --head HEAD`
+       test $orig_head != $(git show-ref --hash --head HEAD)
 '
 
 test_expect_success 'filter commit message without trailing newline' '