add a test for git-send-email for non-threaded mails

diff --git a/git-compat-util.h b/git-compat-util.h
index 785aa31b46c4781b5003aa60214b42d122310e31..c7cf2d5d9cdbfd4ed20c8b8ea49a36af7c138a4e 100644 (file)
--- a/git-compat-util.h
+++ b/git-compat-util.h
@@ -46,6 +46,7 @@
 #define _ALL_SOURCE 1
 #define _GNU_SOURCE 1
 #define _BSD_SOURCE 1
+#define _NETBSD_SOURCE 1
 
 #include <unistd.h>
 #include <stdio.h>
@@ -414,4 +415,10 @@ void git_qsort(void *base, size_t nmemb, size_t size,
 #define fstat_is_reliable() 1
 #endif
 
+/*
+ * Preserves errno, prints a message, but gives no warning for ENOENT.
+ * Always returns the return value of unlink(2).
+ */
+int unlink_or_warn(const char *path);
+
 #endif