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/ |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/t/ b/t/
index 5d0afea..6ed5f74 100755
--- a/t/
+++ b/t/
@@ -18,8 +18,8 @@ test_expect_success 'initialize repo' '
        git commit -a -m "another"
-head=`git rev-parse --verify HEAD^0`
-prev=`git rev-parse --verify HEAD^1`
+head=$(git rev-parse --verify HEAD^0)
+prev=$(git rev-parse --verify HEAD^1)
 # the internals of the commit-diff command are the same as the regular
 # commit, so only a basic test of functionality is needed since we've

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