diff --git a/src/proto/cindent.pro b/src/proto/cindent.pro
new file mode 100644
index 0000000..7de2ab3
--- /dev/null
+++ b/src/proto/cindent.pro
@@ -0,0 +1,10 @@
+/* cindent.c */
+int cin_is_cinword(char_u *line);
+pos_T *find_start_comment(int ind_maxcomment);
+int cindent_on(void);
+void parse_cino(buf_T *buf);
+int get_c_indent(void);
+int in_cinkeys(int keytyped, int when, int line_is_empty);
+void do_c_expr_indent(void);
+void f_cindent(typval_T *argvars, typval_T *rettv);
+/* vim: set ft=c : */