1 file changed, 5 insertions, 1 deletion
diff --git a/source/config.h b/source/config.h
index 3ddf974..30cf74d 100644
--- a/source/config.h
+++ b/source/config.h
@@ -9,6 +9,10 @@
 
 typedef void (*config_file_value_fn)(const char *name, const char *value);
 
-extern void config_file_parse(const char *filename, config_file_value_fn fn);
+/*
+ * Returns 0, or an errno value when filename could not be opened or read. A
+ * missing file is ordinary for some callers, so reporting one is left to them.
+ */
+extern int config_file_parse(const char *filename, config_file_value_fn fn);
 
 #endif // CGIT_CONFIG_H