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[PATCH 05/10] contrib/examples/git-revert.sh: use the $( ... ) construct for command substitution

From
Elia Pinto <gitter.spiros@gmail.com>
Date
Dec 22, 2015, 14:10 UTC
Message-ID
<1450793432-9345-6-git-send-email-gitter.spiros@gmail.com>
In-Reply-To
<1450793432-9345-1-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>
---
 contrib/examples/git-revert.sh | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/contrib/examples/git-revert.sh b/contrib/examples/git-revert.sh
index 7e2aad5..197838d 100755
--- a/contrib/examples/git-revert.sh
+++ b/contrib/examples/git-revert.sh
@@ -138,8 +138,8 @@ cherry-pick)
 	}'
 
 	logmsg=$(git show -s --pretty=raw --encoding="$encoding" "$commit")
-	set_author_env=`echo "$logmsg" |
-	LANG=C LC_ALL=C sed -ne "$pick_author_script"`
+	set_author_env=$(echo "$logmsg" |
+	LANG=C LC_ALL=C sed -ne "$pick_author_script")
 	eval "$set_author_env"
 	export GIT_AUTHOR_NAME
 	export GIT_AUTHOR_EMAIL
@@ -160,9 +160,9 @@ cherry-pick)
 esac >.msg
 
 eval GITHEAD_$head=HEAD
-eval GITHEAD_$next='`git show -s \
+eval GITHEAD_$next='$(git show -s \
 	--pretty=oneline --encoding="$encoding" "$commit" |
-	sed -e "s/^[^ ]* //"`'
+	sed -e "s/^[^ ]* //")'
 export GITHEAD_$head GITHEAD_$next
 
 # This three way merge is an interesting one.  We are at
-- 
2.3.3.GIT
Previous: Elia PintoNext: Elia Pinto
Message 6 of 12 in “use the $( ... ) construct for command substitution”
  1. 00/10 use the $( ... ) construct for command substitutionElia Pinto, Dec 22, 2015
  2. 01/10 contrib/examples/git-commit.sh: use the $( ... ) construct for command substitutionElia Pinto, Dec 22, 2015
  3. 02/10 contrib/examples/git-fetch.sh: use the $( ... ) construct for command substitutionElia Pinto, Dec 22, 2015
  4. 03/10 contrib/examples/git-merge.sh: use the $( ... ) construct for command substitutionElia Pinto, Dec 22, 2015
  5. 04/10 contrib/examples/git-repack.sh: use the $( ... ) construct for command substitutionElia Pinto, Dec 22, 2015
  6. 05/10 contrib/examples/git-revert.sh: use the $( ... ) construct for command substitutionElia Pinto, Dec 22, 2015
  7. 06/10 contrib/thunderbird-patch-inline/appp.sh: use the $( ... ) construct for command substitutionElia Pinto, Dec 22, 2015
  8. 07/10 git-gui/po/glossary/txt-to-pot.sh: use the $( ... ) construct for command substitutionElia Pinto, Dec 22, 2015
  9. 08/10 t/lib-httpd.sh: use the $( ... ) construct for command substitutionElia Pinto, Dec 22, 2015
  10. 09/10 test-sha1.sh: use the $( ... ) construct for command substitutionElia Pinto, Dec 22, 2015
  11. 10/10 unimplemented.sh: use the $( ... ) construct for command substitutionElia Pinto, Dec 22, 2015
  12. Jonathan NiederDec 22, 2015

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