doc: mention `git -c` in git-config(1)

diff --git a/refs.h b/refs.h
index 19ebebcce0e90586a44e903294ccd30599406c1f..9230d4714205f810c7c749559a20e1379197043b 100644 (file)
--- a/refs.h
+++ b/refs.h
@@ -304,7 +304,16 @@ extern char *shorten_unambiguous_ref(const char *refname, int strict);
 /** rename ref, return 0 on success **/
 extern int rename_ref(const char *oldref, const char *newref, const char *logmsg);
 
-extern int create_symref(const char *ref, const char *refs_heads_master, const char *logmsg);
+extern int create_symref(const char *refname, const char *target, const char *logmsg);
+
+/*
+ * Update HEAD of the specified gitdir.
+ * Similar to create_symref("relative-git-dir/HEAD", target, NULL), but
+ * this can update the main working tree's HEAD regardless of where
+ * $GIT_DIR points to.
+ * Return 0 if successful, non-zero otherwise.
+ * */
+extern int set_worktree_head_symref(const char *gitdir, const char *target);
 
 enum action_on_err {
        UPDATE_REFS_MSG_ON_ERR,