viper: show output only if exit code is 0

viper

@@ -1,10 +1,12 @@
 #!/bin/bash
 
-# (c) https://stackoverflow.com/questions/10686183/pipe-vim-buffer-to-stdout/10686830#10686830
-
 TMPFILE=$(mktemp /tmp/viper.XXXXXXXX)
 cat > "$TMPFILE"
 $EDITOR "$@" "$TMPFILE" < /dev/tty > /dev/tty
+
+if [ "$?" -eq 0 ]; then
 	cat "$TMPFILE"
+fi
+
 \rm -f "$TMPFILE"