[PATCH 04/10] t/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 backquotes `...`.

The backquoted form is the traditional 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.

The patch was generated by:

for _f in $(find . -name "*.sh")
do
	perl -i -pe 'BEGIN{undef $/;} s/`(.+?)`/\$(\1)/smg'  "${_f}"
done

and then carefully proof-read.

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' '

-- 
2.3.3.GIT