patch 8.2.0101: crash when passing null object to ":echomsg" Commit: https://github.com/vim/vim/commit/9db2afe46d3208775d1c3075bbee073a17f8fdc6 Author: Bram Moolenaar <Bram@vim.org> Date: Wed Jan 8 18:56:20 2020 +0100 patch 8.2.0101: crash when passing null object to ":echomsg" Problem: Crash when passing null object to ":echomsg". Solution: Check for NULL pointer. (Yasuhiro Matsumoto, closes https://github.com/vim/vim/issues/5460)

/* if_lua.c */
int lua_enabled(int verbose);
void lua_end(void);
void ex_lua(exarg_T *eap);
void ex_luado(exarg_T *eap);
void ex_luafile(exarg_T *eap);
void lua_buffer_free(buf_T *o);
void lua_window_free(win_T *o);
void do_luaeval(char_u *str, typval_T *arg, typval_T *rettv);
int set_ref_in_lua(int copyID);
/* vim: set ft=c : */