[PATCH v2 044/142] t4036-format-patch-signer-mime.sh: use the $( ... ) construct for command substitution

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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 <gitter.spiros@xxxxxxxxx>
---
 t/t4036-format-patch-signer-mime.sh |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/t/t4036-format-patch-signer-mime.sh b/t/t4036-format-patch-signer-mime.sh
index ba43f18..98d9713 100755
--- a/t/t4036-format-patch-signer-mime.sh
+++ b/t/t4036-format-patch-signer-mime.sh
@@ -42,7 +42,7 @@ test_expect_success 'attach and signoff do not duplicate mime headers' '
 
 	GIT_COMMITTER_NAME="はまの ふにおう" \
 	git format-patch -s --stdout -1 --attach >output &&
-	test `grep -ci ^MIME-Version: output` = 1
+	test $(grep -ci ^MIME-Version: output) = 1
 
 '
 
-- 
1.7.10.4

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