patch 8.2.1329: Vim9: cannot define global function inside :def function
Problem: Vim9: cannot define global function inside :def function.
Solution: Assign to global variable instead of local. (closes #6584)
diff --git a/src/proto/userfunc.pro b/src/proto/userfunc.pro
index 9c9eb2d..f30ac2f 100644
--- a/src/proto/userfunc.pro
+++ b/src/proto/userfunc.pro
@@ -5,6 +5,7 @@
char_u *get_lambda_name(void);
char_u *register_cfunc(cfunc_T cb, cfunc_free_T cb_free, void *state);
int get_lambda_tv(char_u **arg, typval_T *rettv, evalarg_T *evalarg);
+void copy_func(char_u *lambda, char_u *global);
char_u *deref_func_name(char_u *name, int *lenp, partial_T **partialp, int no_autoload);
void emsg_funcname(char *ermsg, char_u *name);
int get_func_tv(char_u *name, int len, typval_T *rettv, char_u **arg, evalarg_T *evalarg, funcexe_T *funcexe);