t4014-format-patch.sh: use the $( ... ) construct for command substitution

diff --git a/t/t4014-format-patch.sh b/t/t4014-format-patch.sh
index 73194b2c3dbe267b759bfd036367366b4955f0c4..f9ed598afbba105f33a86efdaaf29bb72c8e1c8f 100755 (executable)
--- a/t/t4014-format-patch.sh
+++ b/t/t4014-format-patch.sh
@@ -43,7 +43,7 @@ test_expect_success setup '
 test_expect_success "format-patch --ignore-if-in-upstream" '
 
        git format-patch --stdout master..side >patch0 &&
-       cnt=`grep "^From " patch0 | wc -l` &&
+       cnt=$(grep "^From " patch0 | wc -l) &&
        test $cnt = 3
 
 '
@@ -52,7 +52,7 @@ test_expect_success "format-patch --ignore-if-in-upstream" '
 
        git format-patch --stdout \
                --ignore-if-in-upstream master..side >patch1 &&
-       cnt=`grep "^From " patch1 | wc -l` &&
+       cnt=$(grep "^From " patch1 | wc -l) &&
        test $cnt = 2
 
 '
@@ -69,7 +69,7 @@ test_expect_success "format-patch doesn't consider merge commits" '
        git checkout -b merger master &&
        test_tick &&
        git merge --no-ff slave &&
-       cnt=`git format-patch -3 --stdout | grep "^From " | wc -l` &&
+       cnt=$(git format-patch -3 --stdout | grep "^From " | wc -l) &&
        test $cnt = 3
 '
 
@@ -77,7 +77,7 @@ test_expect_success "format-patch result applies" '
 
        git checkout -b rebuild-0 master &&
        git am -3 patch0 &&
-       cnt=`git rev-list master.. | wc -l` &&
+       cnt=$(git rev-list master.. | wc -l) &&
        test $cnt = 2
 '
 
@@ -85,7 +85,7 @@ test_expect_success "format-patch --ignore-if-in-upstream result applies" '
 
        git checkout -b rebuild-1 master &&
        git am -3 patch1 &&
-       cnt=`git rev-list master.. | wc -l` &&
+       cnt=$(git rev-list master.. | wc -l) &&
        test $cnt = 2
 '