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.

/* auto/if_perl.c */
int perl_enabled(int verbose);
void perl_end(void);
void msg_split(char_u *s, int attr);
void perl_win_free(win_T *wp);
void perl_buf_free(buf_T *bp);
void ex_perl(exarg_T *eap);
void do_perleval(char_u *str, typval_T *rettv);
void ex_perldo(exarg_T *eap);