[PATCH v2 080/142] t6015-rev-list-show-all-parents.sh: use the $( ... ) construct for command substitution

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.

The patch was generated by the simple script

for _f in $(find . -name "*.sh")
do
  sed -i 's@`\(.*\)`@$(\1)@g' ${_f}
done

Signed-off-by: Elia Pinto <redacted>
---
 t/t6015-rev-list-show-all-parents.sh |    6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/t/t6015-rev-list-show-all-parents.sh b/t/t6015-rev-list-show-all-parents.sh
index 8b146fb..3c73c93 100755
--- a/t/t6015-rev-list-show-all-parents.sh
+++ b/t/t6015-rev-list-show-all-parents.sh

@@ -6,11 +6,11 @@ test_description='--show-all --parents does not rewrite TREESAME commits'
 
 test_expect_success 'set up --show-all --parents test' '
 	test_commit one foo.txt &&
-	commit1=`git rev-list -1 HEAD` &&
+	commit1=$(git rev-list -1 HEAD) &&
 	test_commit two bar.txt &&
-	commit2=`git rev-list -1 HEAD` &&
+	commit2=$(git rev-list -1 HEAD) &&
 	test_commit three foo.txt &&
-	commit3=`git rev-list -1 HEAD`
+	commit3=$(git rev-list -1 HEAD)
 	'
 
 test_expect_success '--parents rewrites TREESAME parents correctly' '

-- 
1.7.10.4