2 files changed, 7 insertions(+), 2 deletions(-)

M src/tee.c
M test/tee

@@ 74,7 74,7 @@ cleanup:
 int
 main(int argc, char *argv[])
 {
-	int aflag = 0;
+	int aflag = O_TRUNC;
 
 	char opt;
 	while ((opt = getopt(argc, argv, "ai")) != -1) {

@@ 10,7 10,12 @@ should_handle_zero_file() (
 should_handle_one_file() (
 	stdout="$(echo "tesT 1ine" | tee "$TMPDIR"/one-file)"
 	res="$(cat "$TMPDIR"/one-file)"
-	[ "$res" = "tesT 1ine" ] && [ "$res" = "$stdout" ]
+	[ "$res" = "tesT 1ine" ] && [ "$res" = "$stdout" ] || return 1
+
+	echo "a really long line for test" >"$TMPDIR"/one-file
+	stdout="$(echo "shorter line" | tee "$TMPDIR"/one-file)"
+	res="$(cat "$TMPDIR"/one-file)"
+	[ "$res" = "shorter line" ] && [ "$res" = "$stdout" ]
 )
 
 should_handle_two_files() (