patch 8.1.1388: errors when calling prop_remove() for an unloaded buffer commit https://github.com/vim/vim/commit/f0884c5f3f5a25481d1e16f0979aa978a6690bb1 Author: Bram Moolenaar <Bram@vim.org> Date: Fri May 24 21:22:29 2019 +0200 patch 8.1.1388: errors when calling prop_remove() for an unloaded buffer Problem: Errors when calling prop_remove() for an unloaded buffer. Solution: Bail out when the buffer is not loaded. Add a few more tests for failing when the buffer number is invalid.

/* 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 : */