t/t3403-rebase-skip.sh: use the $( ... ) construct for command substitution

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>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/t/t3403-rebase-skip.sh b/t/t3403-rebase-skip.sh
index 3968020..1f5122b 100755 (executable)
--- a/t/t3403-rebase-skip.sh
+++ b/t/t3403-rebase-skip.sh
@@ -67,7 +67,7 @@ test_expect_success 'rebase --skip with --merge' '
 '
 
 test_expect_success 'merge and reference trees equal' '
-       test -z "`git diff-tree skip-merge skip-reference`"
+       test -z "$(git diff-tree skip-merge skip-reference)"
 '
 
 test_expect_success 'moved back to branch correctly' '