diff --git a/t/t0030-stripspace.sh b/t/t0030-stripspace.sh
index ae1ca380c1..0a5713c524 100755
--- a/t/t0030-stripspace.sh
+++ b/t/t0030-stripspace.sh
@@ -13,6 +13,10 @@ s40='                                        '
 sss="$s40$s40$s40$s40$s40$s40$s40$s40$s40$s40" # 400
 ttt="$t40$t40$t40$t40$t40$t40$t40$t40$t40$t40" # 400
 
+printf_git_stripspace () {
+    printf "$1" | git stripspace
+}
+
 test_expect_success \
     'long lines without spaces should be unchanged' '
     echo "$ttt" >expect &&
@@ -225,32 +229,38 @@ test_expect_success \
 
 test_expect_success \
     'text without newline at end should end with newline' '
-    test $(printf "$ttt" | git stripspace | wc -l) -gt 0 &&
-    test $(printf "$ttt$ttt" | git stripspace | wc -l) -gt 0 &&
-    test $(printf "$ttt$ttt$ttt" | git stripspace | wc -l) -gt 0 &&
-    test $(printf "$ttt$ttt$ttt$ttt" | git stripspace | wc -l) -gt 0
+    test_stdout_line_count -gt 0 printf_git_stripspace "$ttt" &&
+    test_stdout_line_count -gt 0 printf_git_stripspace "$ttt$ttt" &&
+    test_stdout_line_count -gt 0 printf_git_stripspace "$ttt$ttt$ttt" &&
+    test_stdout_line_count -gt 0 printf_git_stripspace "$ttt$ttt$ttt$ttt"
 '
 
 # text plus spaces at the end:
 
 test_expect_success \
     'text plus spaces without newline at end should end with newline' '
-    test $(printf "$ttt$sss" | git stripspace | wc -l) -gt 0 &&
-    test $(printf "$ttt$ttt$sss" | git stripspace | wc -l) -gt 0 &&
-    test $(printf "$ttt$ttt$ttt$sss" | git stripspace | wc -l) -gt 0 &&
-    test $(printf "$ttt$sss$sss" | git stripspace | wc -l) -gt 0 &&
-    test $(printf "$ttt$ttt$sss$sss" | git stripspace | wc -l) -gt 0 &&
-    test $(printf "$ttt$sss$sss$sss" | git stripspace | wc -l) -gt 0
+    test_stdout_line_count -gt 0 printf_git_stripspace "$ttt$sss" &&
+    test_stdout_line_count -gt 0 printf_git_stripspace "$ttt$ttt$sss" &&
+    test_stdout_line_count -gt 0 printf_git_stripspace "$ttt$ttt$ttt$sss" &&
+    test_stdout_line_count -gt 0 printf_git_stripspace "$ttt$sss$sss" &&
+    test_stdout_line_count -gt 0 printf_git_stripspace "$ttt$ttt$sss$sss" &&
+    test_stdout_line_count -gt 0 printf_git_stripspace "$ttt$sss$sss$sss"
 '
 
 test_expect_success \
     'text plus spaces without newline at end should not show spaces' '
-    ! (printf "$ttt$sss" | git stripspace | grep "  " >/dev/null) &&
-    ! (printf "$ttt$ttt$sss" | git stripspace | grep "  " >/dev/null) &&
-    ! (printf "$ttt$ttt$ttt$sss" | git stripspace | grep "  " >/dev/null) &&
-    ! (printf "$ttt$sss$sss" | git stripspace | grep "  " >/dev/null) &&
-    ! (printf "$ttt$ttt$sss$sss" | git stripspace | grep "  " >/dev/null) &&
-    ! (printf "$ttt$sss$sss$sss" | git stripspace | grep "  " >/dev/null)
+    printf "$ttt$sss" | git stripspace >tmp &&
+    ! grep "  " tmp >/dev/null &&
+    printf "$ttt$ttt$sss" | git stripspace >tmp &&
+    ! grep "  " tmp >/dev/null &&
+    printf "$ttt$ttt$ttt$sss" | git stripspace >tmp &&
+    ! grep "  " tmp >/dev/null &&
+    printf "$ttt$sss$sss" | git stripspace >tmp &&
+    ! grep "  " tmp >/dev/null &&
+    printf "$ttt$ttt$sss$sss" | git stripspace >tmp &&
+    ! grep "  " tmp >/dev/null &&
+    printf "$ttt$sss$sss$sss" | git stripspace >tmp &&
+    ! grep "  " tmp >/dev/null
 '
 
 test_expect_success \
@@ -282,12 +292,18 @@ test_expect_success \
 
 test_expect_success \
     'text plus spaces at end should not show spaces' '
-    ! (echo "$ttt$sss" | git stripspace | grep "  " >/dev/null) &&
-    ! (echo "$ttt$ttt$sss" | git stripspace | grep "  " >/dev/null) &&
-    ! (echo "$ttt$ttt$ttt$sss" | git stripspace | grep "  " >/dev/null) &&
-    ! (echo "$ttt$sss$sss" | git stripspace | grep "  " >/dev/null) &&
-    ! (echo "$ttt$ttt$sss$sss" | git stripspace | grep "  " >/dev/null) &&
-    ! (echo "$ttt$sss$sss$sss" | git stripspace | grep "  " >/dev/null)
+    echo "$ttt$sss" | git stripspace >tmp &&
+    ! grep "  " tmp >/dev/null &&
+    echo "$ttt$ttt$sss" | git stripspace >tmp &&
+    ! grep "  " tmp >/dev/null &&
+    echo "$ttt$ttt$ttt$sss" | git stripspace >tmp &&
+    ! grep "  " tmp >/dev/null &&
+    echo "$ttt$sss$sss" | git stripspace >tmp &&
+    ! grep "  " tmp >/dev/null &&
+    echo "$ttt$ttt$sss$sss" | git stripspace >tmp &&
+    ! grep "  " tmp >/dev/null &&
+    echo "$ttt$sss$sss$sss" | git stripspace >tmp &&
+    ! grep "  " tmp >/dev/null
 '
 
 test_expect_success \
@@ -339,11 +355,16 @@ test_expect_success \
 
 test_expect_success \
     'spaces without newline at end should not show spaces' '
-    ! (printf "" | git stripspace | grep " " >/dev/null) &&
-    ! (printf "$sss" | git stripspace | grep " " >/dev/null) &&
-    ! (printf "$sss$sss" | git stripspace | grep " " >/dev/null) &&
-    ! (printf "$sss$sss$sss" | git stripspace | grep " " >/dev/null) &&
-    ! (printf "$sss$sss$sss$sss" | git stripspace | grep " " >/dev/null)
+    printf "" | git stripspace >tmp &&
+    ! grep " " tmp >/dev/null &&
+    printf "$sss" | git stripspace >tmp &&
+    ! grep " " tmp >/dev/null &&
+    printf "$sss$sss" | git stripspace >tmp &&
+    ! grep " " tmp >/dev/null &&
+    printf "$sss$sss$sss" | git stripspace >tmp &&
+    ! grep " " tmp >/dev/null &&
+    printf "$sss$sss$sss$sss" | git stripspace >tmp &&
+    ! grep " " tmp >/dev/null
 '
 
 test_expect_success \
diff --git a/t/t0050-filesystem.sh b/t/t0050-filesystem.sh
index afc343cf9b..5c9dc90d0b 100755
--- a/t/t0050-filesystem.sh
+++ b/t/t0050-filesystem.sh
@@ -104,7 +104,8 @@ test_expect_failure CASE_INSENSITIVE_FS 'add (with different case)' '
 	rm camelcase &&
 	echo 1 >CamelCase &&
 	git add CamelCase &&
-	camel=$(git ls-files | grep -i camelcase) &&
+	git ls-files >tmp &&
+	camel=$(grep -i camelcase tmp) &&
 	test $(echo "$camel" | wc -l) = 1 &&
 	test "z$(git cat-file blob :$camel)" = z1
 '