[PATCH 02/10] t/t7406-submodule-update.sh: use the $( ... ) construct for command substitution

From: Elia Pinto <gitter.spiros@gmail.com>
Date: Jan 8, 2016, 11:06 UTC
Message-ID: <1452251188-12939-3-git-send-email-gitter.spiros@gmail.com>
In-Reply-To: <1452251188-12939-1-git-send-email-gitter.spiros@gmail.com>

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 <gitter.spiros@gmail.com>
---
 t/t7406-submodule-update.sh | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/t/t7406-submodule-update.sh b/t/t7406-submodule-update.sh
index dda3929..68ea31d 100755
--- a/t/t7406-submodule-update.sh
+++ b/t/t7406-submodule-update.sh
@@ -14,8 +14,8 @@ submodule and "git submodule update --rebase/--merge" does not detach the HEAD.
 
 compare_head()
 {
-    sha_master=`git rev-list --max-count=1 master`
-    sha_head=`git rev-list --max-count=1 HEAD`
+    sha_master=$(git rev-list --max-count=1 master)
+    sha_head=$(git rev-list --max-count=1 HEAD)
 
     test "$sha_master" = "$sha_head"
 }

-- 
2.3.3.GIT