Add tests to catch problems with un-unlinkable symlinks

diff --git a/t/t6030-bisect-porcelain.sh b/t/t6030-bisect-porcelain.sh
index ec71123f4be187c1399c90dc806dbae53cda5b7f..f471c1526f34fa87227ac23b458299063b408ff1 100755 (executable)
--- a/t/t6030-bisect-porcelain.sh
+++ b/t/t6030-bisect-porcelain.sh
@@ -219,7 +219,7 @@ test_expect_success 'bisect run & skip: cannot tell between 2' '
        add_line_into_file "6: Yet a line." hello &&
        HASH6=$(git rev-parse --verify HEAD) &&
        echo "#"\!"/bin/sh" > test_script.sh &&
-       echo "tail -1 hello | grep Ciao > /dev/null && exit 125" >> test_script.sh &&
+       echo "sed -ne \\\$p hello | grep Ciao > /dev/null && exit 125" >> test_script.sh &&
        echo "grep line hello > /dev/null" >> test_script.sh &&
        echo "test \$? -ne 0" >> test_script.sh &&
        chmod +x test_script.sh &&
@@ -244,8 +244,8 @@ test_expect_success 'bisect run & skip: find first bad' '
        add_line_into_file "7: Should be the last line." hello &&
        HASH7=$(git rev-parse --verify HEAD) &&
        echo "#"\!"/bin/sh" > test_script.sh &&
-       echo "tail -1 hello | grep Ciao > /dev/null && exit 125" >> test_script.sh &&
-       echo "tail -1 hello | grep day > /dev/null && exit 125" >> test_script.sh &&
+       echo "sed -ne \\\$p hello | grep Ciao > /dev/null && exit 125" >> test_script.sh &&
+       echo "sed -ne \\\$p hello | grep day > /dev/null && exit 125" >> test_script.sh &&
        echo "grep Yet hello > /dev/null" >> test_script.sh &&
        echo "test \$? -ne 0" >> test_script.sh &&
        chmod +x test_script.sh &&
@@ -260,7 +260,7 @@ test_expect_success 'bisect starting with a detached HEAD' '
        git checkout master^ &&
        HEAD=$(git rev-parse --verify HEAD) &&
        git bisect start &&
-       test $HEAD = $(cat .git/head-name) &&
+       test $HEAD = $(cat .git/BISECT_START) &&
        git bisect reset &&
        test $HEAD = $(git rev-parse --verify HEAD)