diff: -: Bad file number
--- exp	2018-12-29 22:40:30 +0000
+++ out	2018-12-29 22:40:30 +0000
@@ -1,2 +0,0 @@
-0a1
-> a
diff: -: Bad file number
--- exp	2018-12-29 22:40:30 +0000
+++ out	2018-12-29 22:40:30 +0000
@@ -1,2 +0,0 @@
-0a1
-> a
diff: -: Bad file number
--- exp	2018-12-29 22:40:30 +0000
+++ out	2018-12-29 22:40:30 +0000
@@ -1,2 +0,0 @@
-1d0
-< a
diff: -: Bad file number
diff: b: No such file or directory
FAIL new-file (exit status: 1)