tests/null-byte: test another code path

* tests/null-byte: Also exercise the case in which there is
a match in the block along with the NUL byte.

1 files changed, 5 insertions, 1 deletions

diff --git a/tests/null-byte b/tests/null-byte
index 9a768876..1d628065 100755
--- a/tests/null-byte
+++ b/tests/null-byte
@@ -51,9 +51,13 @@ for left in '' a '#' '\0'; do
   done
 done
 
-(echo xxx && yes yyy | sed 100000q && printf '\0') >in || framework_failure_
+(echo xxx && yes yyy | sed 100000q && printf 'z\n\0') >in || framework_failure_
 echo xxx >exp || framework_failure_
 grep xxx in >out || fail=1
 compare exp out || fail=1
 
+printf '%s\n' xxx 'Binary file in matches' > exp || framework_failure_
+grep -E 'xxx|z' in >out || fail=1
+compare exp out || fail=1
+
 Exit $fail