t3030: use test_ln_s_add to remove SYMLINKS prerequisite

diff --git a/t/t4030-diff-textconv.sh b/t/t4030-diff-textconv.sh
index 53ec330ce8a09cfde5b3b5e7661bb6dd457ba0db..f75f46f92d22451522d4676ff4ed709b49419481 100755 (executable)
--- a/t/t4030-diff-textconv.sh
+++ b/t/t4030-diff-textconv.sh
@@ -139,12 +139,10 @@ index 0000000..67be421
 +frotz
 \ No newline at end of file
 EOF
-# make a symlink the hard way that works on symlink-challenged file systems
+
 test_expect_success 'textconv does not act on symlinks' '
-       printf frotz > file &&
-       git add file &&
-       git ls-files -s | sed -e s/100644/120000/ |
-               git update-index --index-info &&
+       rm -f file &&
+       test_ln_s_add frotz file &&
        git commit -m typechange &&
        git show >diff &&
        find_diff <diff >actual &&