patch 8.2.1977: Vim9: error for using a string in a condition is confusing Commit: https://github.com/vim/vim/commit/ea2d407f9c144bb634c59017944e4930ed7f80a2 Author: Bram Moolenaar <Bram@vim.org> Date: Thu Nov 12 12:08:51 2020 +0100 patch 8.2.1977: Vim9: error for using a string in a condition is confusing Problem: Vim9: error for using a string in a condition is confusing. Solution: Give a more specific error. Also adjust the compile time type checking for || and &&.

/* vim9execute.c */
void to_string_error(vartype_T vartype);
void funcstack_check_refcount(funcstack_T *funcstack);
int call_def_function(ufunc_T *ufunc, int argc_arg, typval_T *argv, partial_T *partial, typval_T *rettv);
void ex_disassemble(exarg_T *eap);
int tv2bool(typval_T *tv);
void emsg_using_string_as(typval_T *tv, int as_number);
int check_not_string(typval_T *tv);
/* vim: set ft=c : */