4 files changed, 5 insertions, 1 deletions
diff --git a/src/nvim/ex_cmds.c b/src/nvim/ex_cmds.c
index c399d47b7e..4af7794317 100644
--- a/src/nvim/ex_cmds.c
+++ b/src/nvim/ex_cmds.c
@@ -4237,6 +4237,8 @@ skip:
     }
   }
 
+  curbuf->deleted_bytes2 = 0;
+
   if (first_line != 0) {
     /* Need to subtract the number of added lines from "last_line" to get
      * the line number before the change (same as adding the number of
diff --git a/src/nvim/ops.c b/src/nvim/ops.c
index f2f6803665..04a8fc8499 100644
--- a/src/nvim/ops.c
+++ b/src/nvim/ops.c
@@ -3992,6 +3992,7 @@ int do_join(size_t count,
   del_lines((long)count - 1, false);
   curwin->w_cursor.lnum = t;
   curbuf_splice_pending--;
+  curbuf->deleted_bytes2 = 0;
 
   /*
    * Set the cursor column:
diff --git a/src/nvim/option.c b/src/nvim/option.c
index f57abe89cc..388bedc043 100644
--- a/src/nvim/option.c
+++ b/src/nvim/option.c
@@ -7765,6 +7765,7 @@ static Dictionary vimoption2dict(vimoption_T *opt)
     }
     PUT(dict, "type", CSTR_TO_OBJ(type));
     PUT(dict, "default", def);
+    PUT(dict, "allows_duplicates", BOOL(!(opt->flags & P_NODUP)));
 
     return dict;
 }
diff --git a/src/nvim/options.lua b/src/nvim/options.lua
index 86dec74f56..0b09686675 100644
--- a/src/nvim/options.lua
+++ b/src/nvim/options.lua
@@ -3152,7 +3152,7 @@ return {
       full_name='wildmode', abbreviation='wim',
       short_desc=N_("mode for 'wildchar' command-line expansion"),
       type='string', list='onecomma', scope={'global'},
-      deny_duplicates=true,
+      deny_duplicates=false,
       vim=true,
       varname='p_wim',
       defaults={if_true={vi="", vim="full"}}