patch 8.2.5061: C89 requires signal handlers to return void Commit: https://github.com/vim/vim/commit/99c48fe9974b8d70ca33674658a3da722b0d6466 Author: Bram Moolenaar <Bram@vim.org> Date: Sun Jun 5 22:05:19 2022 +0100 patch 8.2.5061: C89 requires signal handlers to return void Problem: C89 requires signal handlers to return void. Solution: Drop RETSIGTYPE and hard-code a void return value.

/* 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 : */