[PATCH 093/144] t7504-commit-msg-hook.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.

Signed-off-by: Elia Pinto <redacted>
---
 t/t7504-commit-msg-hook.sh |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/t/t7504-commit-msg-hook.sh b/t/t7504-commit-msg-hook.sh
index 1f53ea8..8728db6 100755
--- a/t/t7504-commit-msg-hook.sh
+++ b/t/t7504-commit-msg-hook.sh

@@ -179,7 +179,7 @@ EOF
 chmod +x "$HOOK"
 
 commit_msg_is () {
-	test "`git log --pretty=format:%s%b -1`" = "$1"
+	test "$(git log --pretty=format:%s%b -1)" = "$1"
 }
 
 test_expect_success 'hook edits commit message' '

-- 
1.7.10.4