add -0 for outputting null-terminated list (#68)

* add -0 for outputting null-terminated list

this doesn't add much, if any, additional complexity to the codebase and
can be quite handy for scripting purposes.

Closes: https://github.com/nsxiv/nsxiv/issues/67

* Fix typo

Co-authored-by: Berke Kocaoğlu <berke.kocaoglu@metu.edu.tr>

1 files changed, 1 insertions, 0 deletions

diff --git a/nsxiv.h b/nsxiv.h
index 0a3bff1..be7ffe6 100644
--- a/nsxiv.h
+++ b/nsxiv.h
@@ -268,6 +268,7 @@ struct opt {
 	char **filenames;
 	bool from_stdin;
 	bool to_stdout;
+	char stdout_separator;
 	bool recursive;
 	int filecnt;
 	int startnum;