1 files changed, 11 insertions, 18 deletions

diff --git a/src/nvim/api/vim.c b/src/nvim/api/vim.c
index 9dde62f0ee..b5e53beabe 100644
--- a/src/nvim/api/vim.c
+++ b/src/nvim/api/vim.c
@@ -1333,7 +1333,8 @@ void nvim_chan_send(Integer chan, String data, Error *err)
     return;
   }
 
-  channel_send((uint64_t)chan, data.data, data.size, &error);
+  channel_send((uint64_t)chan, data.data, data.size,
+               false, &error);
   if (error) {
     api_set_error(err, kErrorTypeValidation, "%s", error);
   }
@@ -1421,6 +1422,7 @@ void nvim_chan_send(Integer chan, String data, Error *err)
 ///     - "none" No border. This is the default
 ///     - "single" a single line box
 ///     - "double" a double line box
+///     - "shadow" a drop shadow effect by blending with the background.
 ///     If it is an array it should be an array of eight items or any divisor of
 ///     eight. The array will specifify the eight chars building up the border
 ///     in a clockwise fashion starting with the top-left corner. As, an
@@ -1431,6 +1433,9 @@ void nvim_chan_send(Integer chan, String data, Error *err)
 ///       [ "/", "-", "\\", "|" ]
 ///     or all chars the same as:
 ///       [ "x" ]
+///     An empty string can be used to turn off a specific border, for instance:
+///       [ "", "", "", ">", "", "", "", "<" ]
+///     will only make vertical borders but not horizontal ones.
 ///     By default `FloatBorder` highlight is used which links to `VertSplit`
 ///     when not defined.  It could also be specified by character:
 ///       [ {"+", "MyCorner"}, {"x", "MyBorder"} ]
@@ -2708,6 +2713,7 @@ Dictionary nvim__stats(void)
   Dictionary rv = ARRAY_DICT_INIT;
   PUT(rv, "fsync", INTEGER_OBJ(g_stats.fsync));
   PUT(rv, "redraw", INTEGER_OBJ(g_stats.redraw));
+  PUT(rv, "lua_refcount", INTEGER_OBJ(nlua_refcount));
   return rv;
 }
 
@@ -2880,19 +2886,6 @@ void nvim__screenshot(String path)
   ui_call_screenshot(path);
 }
 
-static void clear_provider(DecorProvider *p)
-{
-  if (p == NULL) {
-    return;
-  }
-  NLUA_CLEAR_REF(p->redraw_start);
-  NLUA_CLEAR_REF(p->redraw_buf);
-  NLUA_CLEAR_REF(p->redraw_win);
-  NLUA_CLEAR_REF(p->redraw_line);
-  NLUA_CLEAR_REF(p->redraw_end);
-  p->active = false;
-}
-
 /// Set or change decoration provider for a namespace
 ///
 /// This is a very general purpose interface for having lua callbacks
@@ -2937,8 +2930,8 @@ void nvim_set_decoration_provider(Integer ns_id, DictionaryOf(LuaRef) opts,
                                   Error *err)
   FUNC_API_SINCE(7) FUNC_API_LUA_ONLY
 {
-  DecorProvider *p = get_provider((NS)ns_id, true);
-  clear_provider(p);
+  DecorProvider *p = get_decor_provider((NS)ns_id, true);
+  decor_provider_clear(p);
 
   // regardless of what happens, it seems good idea to redraw
   redraw_all_later(NOT_VALID);  // TODO(bfredl): too soon?
@@ -2960,7 +2953,7 @@ void nvim_set_decoration_provider(Integer ns_id, DictionaryOf(LuaRef) opts,
     String k = opts.items[i].key;
     Object *v = &opts.items[i].value;
     size_t j;
-    for (j = 0; cbs[j].name; j++) {
+    for (j = 0; cbs[j].name && cbs[j].dest; j++) {
       if (strequal(cbs[j].name, k.data)) {
         if (v->type != kObjectTypeLuaRef) {
           api_set_error(err, kErrorTypeValidation,
@@ -2981,5 +2974,5 @@ void nvim_set_decoration_provider(Integer ns_id, DictionaryOf(LuaRef) opts,
   p->active = true;
   return;
 error:
-  clear_provider(p);
+  decor_provider_clear(p);
 }