[PATCH v2 046/142] t4057-diff-combined-paths.sh: use the $( ... ) construct for command substitution

From: Elia Pinto <gitter.spiros@gmail.com>
Date: Mar 25, 2014, 17:23 UTC
Message-ID: <1395768283-31135-47-git-send-email-gitter.spiros@gmail.com>
In-Reply-To: <1395768283-31135-1-git-send-email-gitter.spiros@gmail.com>

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@gmail.com>
---
 t/t4057-diff-combined-paths.sh |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/t/t4057-diff-combined-paths.sh b/t/t4057-diff-combined-paths.sh
index 097e632..dff36b7 100755
--- a/t/t4057-diff-combined-paths.sh
+++ b/t/t4057-diff-combined-paths.sh
@@ -5,7 +5,7 @@ test_description='combined diff show only paths that are different to all parent
 . ./test-lib.sh
 
 # verify that diffc.expect matches output of
-# `git diff -c --name-only HEAD HEAD^ HEAD^2`
+# $(git diff -c --name-only HEAD HEAD^ HEAD^2)
 diffc_verify () {
 	git diff -c --name-only HEAD HEAD^ HEAD^2 >diffc.actual &&
 	test_cmp diffc.expect diffc.actual

-- 
1.7.10.4