[PATCH 031/144] t3100-ls-tree-restrict.sh: use the $( ... ) construct for command substitution

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.

Signed-off-by: Elia Pinto <redacted>
---
 t/t3100-ls-tree-restrict.sh |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/t/t3100-ls-tree-restrict.sh b/t/t3100-ls-tree-restrict.sh
index eb73c06..325114f 100755
--- a/t/t3100-ls-tree-restrict.sh
+++ b/t/t3100-ls-tree-restrict.sh

@@ -28,7 +28,7 @@ test_expect_success \
      echo Mi >path2/baz/b &&
      find path? \( -type f -o -type l \) -print |
      xargs git update-index --add &&
-     tree=`git write-tree` &&
+     tree=$(git write-tree) &&
      echo $tree'
 
 test_output () {

-- 
1.7.10.4