The Git CodingGuidelines prefer the $( ... ) construct for command
substitution instead of using the back-quotes, or grave accents (`..`).

The backquoted form is the historical method for command substitution,
and is supported by POSIX. However,all but the simplest uses become
complicated quickly. In particular,embedded command substitutions
and/or the use of double quotes require careful escaping with the backslash
character. Because of this the POSIX shell adopted the $(…) feature from
the Korn shell.

Signed-off-by: Elia Pinto <>
 t/ |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/t/ b/t/
index 3968020..1f5122b 100755
--- a/t/
+++ b/t/
@@ -67,7 +67,7 @@ test_expect_success 'rebase --skip with --merge' '
 test_expect_success 'merge and reference trees equal' '
-       test -z "`git diff-tree skip-merge skip-reference`"
+       test -z "$(git diff-tree skip-merge skip-reference)"
 test_expect_success 'moved back to branch correctly' '

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