--- a/src/proto/option.pro
+++ b/src/proto/option.pro
@@ -24,6 +24,68 @@ int valid_name(char_u *val, char *allowe
 void set_option_sctx_idx(int opt_idx, int opt_flags, sctx_T script_ctx);
 sctx_T *get_option_sctx(char *name);
 void set_term_option_sctx_idx(char *name, int opt_idx);
+char *did_set_compatible(optset_T *args);
+char *did_set_langremap(optset_T *args);
+char *did_set_langnoremap(optset_T *args);
+char *did_set_undofile(optset_T *args);
+char *did_set_readonly(optset_T *args);
+char *did_set_mousehide(optset_T *args);
+char *did_set_modifiable(optset_T *args);
+char *did_set_eof_eol_fixeol_bomb(optset_T *args);
+char *did_set_binary(optset_T *args);
+char *did_set_buflisted(optset_T *args);
+char *did_set_swapfile(optset_T *args);
+char *did_set_terse(optset_T *args);
+char *did_set_paste(optset_T *args);
+char *did_set_insertmode(optset_T *args);
+char *did_set_ignorecase(optset_T *args);
+char *did_set_hlsearch(optset_T *args);
+char *did_set_scrollbind(optset_T *args);
+char *did_set_previewwindow(optset_T *args);
+char *did_set_smoothscroll(optset_T *args);
+char *did_set_textmode(optset_T *args);
+char *did_set_textauto(optset_T *args);
+char *did_set_lisp(optset_T *args);
+char *did_set_title_icon(optset_T *args);
+char *did_set_modified(optset_T *args);
+char *did_set_shellslash(optset_T *args);
+char *did_set_wrap(optset_T *args);
+char *did_set_equalalways(optset_T *args);
+char *did_set_weirdinvert(optset_T *args);
+char *did_set_ballooneval(optset_T *args);
+char *did_set_balloonevalterm(optset_T *args);
+char *did_set_autochdir(optset_T *args);
+char *did_set_diff(optset_T *args);
+char *did_set_imdisable(optset_T *args);
+char *did_set_spell(optset_T *args);
+char *did_set_arabic(optset_T *args);
+char *did_set_number_relativenumber(optset_T *args);
+char *did_set_termguicolors(optset_T *args);
+char *did_set_winheight_helpheight(optset_T *args);
+char *did_set_winminheight(optset_T *args);
+char *did_set_winwidth(optset_T *args);
+char *did_set_winminwidth(optset_T *args);
+char *did_set_laststatus(optset_T *args);
+char *did_set_showtabline(optset_T *args);
+char *did_set_linespace(optset_T *args);
+char *did_set_foldlevel(optset_T *args);
+char *did_set_foldminlines(optset_T *args);
+char *did_set_foldnestmax(optset_T *args);
+char *did_set_foldcolumn(optset_T *args);
+char *did_set_shiftwidth_tabstop(optset_T *args);
+char *did_set_maxcombine(optset_T *args);
+char *did_set_iminsert(optset_T *args);
+char *did_set_imstyle(optset_T *args);
+char *did_set_window(optset_T *args);
+char *did_set_imsearch(optset_T *args);
+char *did_set_titlelen(optset_T *args);
+char *did_set_cmdheight(optset_T *args);
+char *did_set_updatecount(optset_T *args);
+char *did_set_conceallevel(optset_T *args);
+char *did_set_pyxversion(optset_T *args);
+char *did_set_numberwidth(optset_T *args);
+char *did_set_textwidth(optset_T *args);
+char *did_set_undolevels(optset_T *args);
 void check_redraw(long_u flags);
 int findoption(char_u *arg);
 getoption_T get_option_value(char_u *name, long *numval, char_u **stringval, int *flagsp, int scope);
@@ -55,6 +117,7 @@ void unset_global_local_option(char_u *n
 char_u *get_option_varp_scope(int opt_idx, int scope);
 char_u *get_option_var(int opt_idx);
 char_u *get_option_fullname(int opt_idx);
+opt_did_set_cb_T get_option_did_set_cb(int opt_idx);
 char_u *get_equalprg(void);
 void win_copy_options(win_T *wp_from, win_T *wp_to);
 void after_copy_winopt(win_T *wp);
@@ -72,7 +135,7 @@ void vimrc_found(char_u *fname, char_u *
 void change_compatible(int on);
 int option_was_set(char_u *name);
 int reset_option_was_set(char_u *name);
-void fill_breakat_flags(void);
+char *did_set_breakat(optset_T *args);
 int can_bs(int what);
 long get_scrolloff_value(void);
 long get_sidescrolloff_value(void);