Do not quote in simple assignments.

sunrise-commit

@@ -82,7 +82,7 @@ check_for_changes() {
 	local output
 
 	if [ ${SC_VCS%-svn} = git ]; then
-		output="$(git diff-index --name-only --relative HEAD)"
+		output=$(git diff-index --name-only --relative HEAD)
 	fi
 
 	# We do not care about user mangling ChangeLog, we will reset it anyway.
@@ -145,11 +145,11 @@ main() {
 
 			--)
 				shift
-				commitmsg="${commitmsg+${commitmsg} }${@}"
+				commitmsg=${commitmsg+${commitmsg} }${@}
 				break
 				;;
 			*)
-				commitmsg="${commitmsg+${commitmsg} }${1}"
+				commitmsg=${commitmsg+${commitmsg} }${1}
 				;;
 		esac
 		shift
@@ -191,7 +191,7 @@ main() {
 
 				local bns
 				# Let's take a lucky guess bugnumbers consist of 4+ digits.
-				bns="$(echo "${commitmsg}" | grep -o -E '[0-9]{4,}')"
+				bns=$(echo "${commitmsg}" | grep -o -E '[0-9]{4,}')
 
 				# Creating a new ChangeLog? Let's take a look at the commit message.
 				[ ! -f ChangeLog -a -z "${bns}" ] && die 'Please supply the bug number in the initial commit message!'