[PATCH 02/10] t/t5304-prune.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/t5304-prune.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/t/t5304-prune.sh b/t/t5304-prune.sh
index def203c..133b584 100755
--- a/t/t5304-prune.sh
+++ b/t/t5304-prune.sh

@@ -266,7 +266,7 @@ EOF
 '
 
 test_expect_success 'prune .git/shallow' '
-	SHA1=`echo hi|git commit-tree HEAD^{tree}` &&
+	SHA1=$(echo hi|git commit-tree HEAD^{tree}) &&
 	echo $SHA1 >.git/shallow &&
 	git prune --dry-run >out &&
 	grep $SHA1 .git/shallow &&

-- 
2.3.3.GIT