vim-patch:8.2.{0695,0725,0734,0753,0818,0819,0822} (#23075)

vim-patch:8.2.0695: Vim9: cannot define a function inside a function

Problem:    Vim9: cannot define a function inside a function.
Solution:   Initial support for :def inside :def.

04b1269783

vim-patch:8.2.0725: Vim9: cannot call a function declared later in Vim9 script

Problem:    Vim9: cannot call a function declared later in Vim9 script.
Solution:   Make two passes through the script file.

09689a0284

vim-patch:8.2.0734: Vim9: leaking memory when using :finish

Problem:    Vim9: leaking memory when using :finish.
Solution:   Do not check for next line in third pass.

04816717df

vim-patch:8.2.0753: Vim9: expressions are evaluated in the discovery phase

Problem:    Vim9: expressions are evaluated in the discovery phase.
Solution:   Bail out if an expression is not a constant.  Require a type for
            declared constants.

32e351179e

vim-patch:8.2.0818: Vim9: using a discovery phase doesn't work well

Problem:    Vim9: using a discovery phase doesn't work well.
Solution:   Remove the discovery phase, instead compile a function only when
            it is used.  Add :defcompile to compile def functions earlier.

822ba24743

vim-patch:8.2.0819: compiler warning for unused variable

Problem:    Compiler warning for unused variable.
Solution:   Remove the variable.

f40e51a880

vim-patch:8.2.0822: Vim9: code left over from discovery phase

Problem:    Vim9: code left over from discovery phase.
Solution:   Remove the dead code.

2eec37926d

Co-authored-by: Bram Moolenaar <Bram@vim.org>

src/nvim/eval/funcs.c

@@ -1550,7 +1550,7 @@ static void f_eval(typval_T *argvars, typval_T *rettv, EvalFuncData fptr)
   }
 
   const char *const expr_start = s;
-  if (s == NULL || eval1((char **)&s, rettv, true) == FAIL) {
+  if (s == NULL || eval1((char **)&s, rettv, EVAL_EVALUATE) == FAIL) {
     if (expr_start != NULL && !aborting()) {
       semsg(_(e_invexpr2), expr_start);
     }