commit-graph: verify objects exist

diff --git a/config.c b/config.c
index fbbf0f8e9f2b2ae0a96769108d8a2773f071aec1..a0a6ae1980d9c95d13bb78422e64850396c1a4d8 100644 (file)
--- a/config.c
+++ b/config.c
@@ -3245,3 +3245,16 @@ enum config_scope current_config_scope(void)
        else
                return current_parsing_scope;
 }
+
+int lookup_config(const char **mapping, int nr_mapping, const char *var)
+{
+       int i;
+
+       for (i = 0; i < nr_mapping; i++) {
+               const char *name = mapping[i];
+
+               if (name && !strcasecmp(var, name))
+                       return i;
+       }
+       return -1;
+}