patch 9.0.0502: a closure in a nested loop in a :def function does not work
Problem: A closure in a nested loop in a :def function does not work.
Solution: Use an array of loopvars, one per loop level.
diff --git a/src/proto/vim9instr.pro b/src/proto/vim9instr.pro
index 8fd3861..f0298f9 100644
--- a/src/proto/vim9instr.pro
+++ b/src/proto/vim9instr.pro
@@ -31,7 +31,7 @@
int generate_STORE(cctx_T *cctx, isntype_T isn_type, int idx, char_u *name);
int generate_STORENR(cctx_T *cctx, int idx, varnumber_T value);
int generate_LOAD(cctx_T *cctx, isntype_T isn_type, int idx, char_u *name, type_T *type);
-int generate_LOADOUTER(cctx_T *cctx, int idx, int nesting, int loop_idx, type_T *type);
+int generate_LOADOUTER(cctx_T *cctx, int idx, int nesting, int loop_depth, int loop_idx, type_T *type);
int generate_LOADV(cctx_T *cctx, char_u *name);
int generate_UNLET(cctx_T *cctx, isntype_T isn_type, char_u *name, int forceit);
int generate_LOCKCONST(cctx_T *cctx);
@@ -40,13 +40,13 @@
int generate_NEWLIST(cctx_T *cctx, int count, int use_null);
int generate_NEWDICT(cctx_T *cctx, int count, int use_null);
int generate_FUNCREF(cctx_T *cctx, ufunc_T *ufunc, isn_T **isnp);
-int generate_NEWFUNC(cctx_T *cctx, char_u *lambda_name, char_u *func_name, short loop_var_idx, short loop_var_count);
+int generate_NEWFUNC(cctx_T *cctx, char_u *lambda_name, char_u *func_name);
int generate_DEF(cctx_T *cctx, char_u *name, size_t len);
int generate_JUMP(cctx_T *cctx, jumpwhen_T when, int where);
int generate_WHILE(cctx_T *cctx, int funcref_idx);
int generate_JUMP_IF_ARG_SET(cctx_T *cctx, int arg_off);
int generate_FOR(cctx_T *cctx, int loop_idx);
-int generate_ENDLOOP(cctx_T *cctx, int funcref_idx, int prev_local_count);
+int generate_ENDLOOP(cctx_T *cctx, loop_info_T *loop_info);
int generate_TRYCONT(cctx_T *cctx, int levels, int where);
int check_internal_func_args(cctx_T *cctx, int func_idx, int argcount, int method_call, type2_T **argtypes, type2_T *shuffled_argtypes);
int generate_BCALL(cctx_T *cctx, int func_idx, int argcount, int method_call);