patch 8.2.3430: no generic way to trigger an autocommand on mode change
Problem: No generic way to trigger an autocommand on mode change.
Solution: Add the ModeChanged autocommand event. (Magnus Gross, closes #8856)
diff --git a/src/misc1.c b/src/misc1.c
index 9708502..1dd07f9 100644
--- a/src/misc1.c
+++ b/src/misc1.c
@@ -630,7 +630,7 @@
void
f_mode(typval_T *argvars, typval_T *rettv)
{
- char_u buf[4];
+ char_u buf[MODE_MAX_LENGTH];
if (in_vim9script() && check_for_opt_bool_arg(argvars, 0) == FAIL)
return;
@@ -2643,3 +2643,42 @@
// "://" or ":\\" must follow
return path_is_url(p);
}
+
+/*
+ * Fires a ModeChanged autocmd
+ */
+ void
+trigger_modechanged()
+{
+#if defined(FEAT_EVAL) || defined(PROTO)
+ dict_T *v_event;
+ typval_T rettv;
+ typval_T tv;
+ char_u *pat_pre;
+ char_u *pat;
+
+ if (!has_modechanged())
+ return;
+
+ v_event = get_vim_var_dict(VV_EVENT);
+
+ tv.v_type = VAR_UNKNOWN;
+ f_mode(&tv, &rettv);
+ (void)dict_add_string(v_event, "new_mode", rettv.vval.v_string);
+ (void)dict_add_string(v_event, "old_mode", last_mode);
+ dict_set_items_ro(v_event);
+
+ // concatenate modes in format "old_mode:new_mode"
+ pat_pre = concat_str(last_mode, (char_u*)":");
+ pat = concat_str(pat_pre, rettv.vval.v_string);
+ vim_free(pat_pre);
+
+ apply_autocmds(EVENT_MODECHANGED, pat, NULL, FALSE, curbuf);
+ STRCPY(last_mode, rettv.vval.v_string);
+
+ vim_free(rettv.vval.v_string);
+ vim_free(pat);
+ dict_free_contents(v_event);
+ hash_init(&v_event->dv_hashtab);
+#endif
+}