patch 8.2.1259: empty group in 'tabline' may cause using an invalid pointer Commit: https://github.com/vim/vim/commit/f56c95fdad5af521887f8cd7bc15729b5355231d Author: Bram Moolenaar <Bram@vim.org> Date: Tue Jul 21 19:25:18 2020 +0200 patch 8.2.1259: empty group in 'tabline' may cause using an invalid pointer Problem: Empty group in 'tabline' may cause using an invalid pointer. Solution: Set the group start position. (closes https://github.com/vim/vim/issues/6505)

/* if_ruby.c */
int ruby_enabled(int verbose);
void ruby_end(void);
void ex_ruby(exarg_T *eap);
void ex_rubydo(exarg_T *eap);
void ex_rubyfile(exarg_T *eap);
void ruby_buffer_free(buf_T *buf);
void ruby_window_free(win_T *win);
void vim_ruby_init(void *stack_start);
void do_rubyeval(char_u *str, typval_T *rettv);
/* vim: set ft=c : */