patch 8.1.0513: no error for set diffopt+=algorithm: commit https://github.com/vim/vim/commit/d0721058f494143186f66a60151c9634031a8c96 Author: Bram Moolenaar <Bram@vim.org> Date: Mon Nov 5 21:21:33 2018 +0100 patch 8.1.0513: no error for set diffopt+=algorithm: Problem: No error for set diffopt+=algorithm:. Solution: Check for missing argument. (Hirohito Higashi, closes https://github.com/vim/vim/issues/3598)

/* digraph.c */
int do_digraph(int c);
char_u *get_digraph_for_char(int val_arg);
int get_digraph(int cmdline);
int getdigraph(int char1, int char2, int meta_char);
void putdigraph(char_u *str);
void listdigraphs(void);
char_u *keymap_init(void);
void ex_loadkeymap(exarg_T *eap);
void keymap_clear(garray_T *kmap);
/* vim: set ft=c : */