[PATCH] t/test-lib.sh: minor readability improvements

[Mathias Lafeldt <misfire@debugon.org>]

Tweak/apply parameter expansion. Also use here document to save
test results instead of appending each line with ">>".

Signed-off-by: Mathias Lafeldt <misfire@debugon.org>
---
 t/test-lib.sh |   18 ++++++++++--------
 1 files changed, 10 insertions(+), 8 deletions(-)

diff --git a/t/test-lib.sh b/t/test-lib.sh
index abc47f3..b30725f 100644
--- a/t/test-lib.sh
+++ b/t/test-lib.sh
@@ -24,7 +24,7 @@ done,*)
 *' --tee '*|*' --va'*)
 	mkdir -p test-results
 	BASE=test-results/$(basename "$0" .sh)
-	(GIT_TEST_TEE_STARTED=done ${SHELL-sh} "$0" "$@" 2>&1;
+	(GIT_TEST_TEE_STARTED=done ${SHELL-"sh"} "$0" "$@" 2>&1;
 	 echo $? > $BASE.exit) | tee $BASE.out
 	test "$(cat $BASE.exit)" = 0
 	exit
@@ -575,7 +575,7 @@ test_external () {
 test_external_without_stderr () {
 	# The temporary file has no (and must have no) security
 	# implications.
-	tmp="$TMPDIR"; if [ -z "$tmp" ]; then tmp=/tmp; fi
+	tmp=${TMPDIR:-"/tmp"}
 	stderr="$tmp/git-external-stderr.$$.tmp"
 	test_external "$@" 4> "$stderr"
 	[ -f "$stderr" ] || error "Internal error: $stderr disappeared."
@@ -801,12 +801,14 @@ test_done () {
 		mkdir -p "$test_results_dir"
 		test_results_path="$test_results_dir/${0%.sh}-$$.counts"
 
-		echo "total $test_count" >> $test_results_path
-		echo "success $test_success" >> $test_results_path
-		echo "fixed $test_fixed" >> $test_results_path
-		echo "broken $test_broken" >> $test_results_path
-		echo "failed $test_failure" >> $test_results_path
-		echo "" >> $test_results_path
+		cat >> "$test_results_path" <<EOF
+total $test_count
+success $test_success
+fixed $test_fixed
+broken $test_broken
+failed $test_failure
+
+EOF
 	fi
 
 	if test "$test_fixed" != 0
-- 
1.7.5