commit https://github.com/vim/vim/commit/22177f0c0826e3b2411a5e9d050b50200877ecd3 Author: Bram Moolenaar <Bram@vim.org> Date: Mon Aug 15 22:54:49 2016 +0200 patch 7.4.2216 Problem: Test fails without the +sign feature. Solution: Only check for signcolumn with the +sign feature.

/* 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);
/* vim: set ft=c : */