[PATCH v2 086/142] t7004-tag.sh: use the $( ... ) construct for command substitution

[Elia Pinto]

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.spi...@gmail.com>
---
 t/t7004-tag.sh |   16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/t/t7004-tag.sh b/t/t7004-tag.sh
index 143a8ea..2ed8fc0 100755
--- a/t/t7004-tag.sh
+++ b/t/t7004-tag.sh
@@ -23,8 +23,8 @@ test_expect_success 'listing all tags in an empty tree should 
succeed' '
 '
 
 test_expect_success 'listing all tags in an empty tree should output nothing' '
-       test `git tag -l | wc -l` -eq 0 &&
-       test `git tag | wc -l` -eq 0
+       test $(git tag -l | wc -l) -eq 0 &&
+       test $(git tag | wc -l) -eq 0
 '
 
 test_expect_success 'looking for a tag in an empty tree should fail' \
@@ -60,8 +60,8 @@ test_expect_success 'listing all tags if one exists should 
succeed' '
 '
 
 test_expect_success 'listing all tags if one exists should output that tag' '
-       test `git tag -l` = mytag &&
-       test `git tag` = mytag
+       test $(git tag -l) = mytag &&
+       test $(git tag) = mytag
 '
 
 # pattern matching:
@@ -71,7 +71,7 @@ test_expect_success 'listing a tag using a matching pattern 
should succeed' \
 
 test_expect_success \
        'listing a tag using a matching pattern should output that tag' \
-       'test `git tag -l mytag` = mytag'
+       'test $(git tag -l mytag) = mytag'
 
 # todo: git tag -l now returns always zero, when fixed, change this test
 test_expect_success \
@@ -80,7 +80,7 @@ test_expect_success \
 
 test_expect_success \
        'listing tags using a non-matching pattern should output nothing' \
-       'test `git tag -l xxx | wc -l` -eq 0'
+       'test $(git tag -l xxx | wc -l) -eq 0'
 
 # special cases for creating tags:
 
@@ -90,13 +90,13 @@ test_expect_success \
 
 test_expect_success \
        'trying to create a tag with a non-valid name should fail' '
-       test `git tag -l | wc -l` -eq 1 &&
+       test $(git tag -l | wc -l) -eq 1 &&
        test_must_fail git tag "" &&
        test_must_fail git tag .othertag &&
        test_must_fail git tag "other tag" &&
        test_must_fail git tag "othertag^" &&
        test_must_fail git tag "other~tag" &&
-       test `git tag -l | wc -l` -eq 1
+       test $(git tag -l | wc -l) -eq 1
 '
 
 test_expect_success 'creating a tag using HEAD directly should succeed' '
-- 
1.7.10.4

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