diff --git a/src/proto/userfunc.pro b/src/proto/userfunc.pro
new file mode 100644
index 0000000..b354197
--- /dev/null
+++ b/src/proto/userfunc.pro
@@ -0,0 +1,52 @@
+/* userfunc.c */
+void func_init(void);
+int get_lambda_tv(char_u **arg, typval_T *rettv, int evaluate);
+char_u *deref_func_name(char_u *name, int *lenp, partial_T **partialp, int no_autoload);
+int get_func_tv(char_u *name, int len, typval_T *rettv, char_u **arg, linenr_T firstline, linenr_T lastline, int *doesrange, int evaluate, partial_T *partial, dict_T *selfdict);
+void free_all_functions(void);
+int func_call(char_u *name, typval_T *args, partial_T *partial, dict_T *selfdict, typval_T *rettv);
+int call_func(char_u *funcname, int len, typval_T *rettv, int argcount_in, typval_T *argvars_in, linenr_T firstline, linenr_T lastline, int *doesrange, int evaluate, partial_T *partial, dict_T *selfdict_in);
+void ex_function(exarg_T *eap);
+int eval_fname_script(char_u *p);
+int translated_function_exists(char_u *name);
+int function_exists(char_u *name);
+char_u *get_expanded_name(char_u *name, int check);
+void func_dump_profile(FILE *fd);
+void prof_child_enter(proftime_T *tm);
+void prof_child_exit(proftime_T *tm);
+char_u *get_user_func_name(expand_T *xp, int idx);
+void ex_delfunction(exarg_T *eap);
+void func_unref(char_u *name);
+void func_ref(char_u *name);
+void ex_return(exarg_T *eap);
+void ex_call(exarg_T *eap);
+int do_return(exarg_T *eap, int reanimate, int is_cmd, void *rettv);
+void discard_pending_return(void *rettv);
+char_u *get_return_cmd(void *rettv);
+char_u *get_func_line(int c, void *cookie, int indent);
+void func_line_start(void *cookie);
+void func_line_exec(void *cookie);
+void func_line_end(void *cookie);
+int func_has_ended(void *cookie);
+int func_has_abort(void *cookie);
+dict_T *make_partial(dict_T *selfdict_in, typval_T *rettv);
+char_u *func_name(void *cookie);
+linenr_T *func_breakpoint(void *cookie);
+int *func_dbg_tick(void *cookie);
+int func_level(void *cookie);
+int current_func_returned(void);
+void *save_funccal(void);
+void restore_funccal(void *vfc);
+int free_unref_funccal(int copyID, int testing);
+hashtab_T *get_funccal_local_ht(void);
+dictitem_T *get_funccal_local_var(void);
+hashtab_T *get_funccal_args_ht(void);
+dictitem_T *get_funccal_args_var(void);
+void *clear_current_funccal(void);
+void restore_current_funccal(void *f);
+void list_func_vars(int *first);
+dict_T *get_current_funccal_dict(hashtab_T *ht);
+int set_ref_in_previous_funccal(int copyID);
+int set_ref_in_call_stack(int copyID);
+int set_ref_in_func_args(int copyID);
+/* vim: set ft=c : */