1 files changed, 48 insertions, 6 deletions

diff --git a/runtime/lua/vim/lsp/protocol.lua b/runtime/lua/vim/lsp/protocol.lua
index 218424fa14..3e111c154a 100644
--- a/runtime/lua/vim/lsp/protocol.lua
+++ b/runtime/lua/vim/lsp/protocol.lua
@@ -34,6 +34,13 @@ local constants = {
     Hint = 4;
   };
 
+  DiagnosticTag = {
+    -- Unused or unnecessary code
+    Unnecessary = 1;
+    -- Deprecated or obsolete code
+    Deprecated = 2;
+  };
+
   MessageType = {
     -- An error message.
     Error = 1;
@@ -292,8 +299,9 @@ local constants = {
 }
 
 for k, v in pairs(constants) do
-  vim.tbl_add_reverse_lookup(v)
-  protocol[k] = v
+  local tbl = vim.deepcopy(v)
+  vim.tbl_add_reverse_lookup(tbl)
+  protocol[k] = tbl
 end
 
 --[=[
@@ -520,6 +528,13 @@ export interface TextDocumentClientCapabilities {
   publishDiagnostics?: {
     --Whether the clients accepts diagnostics with related information.
     relatedInformation?: boolean;
+    --Client supports the tag property to provide meta data about a diagnostic.
+	  --Clients supporting tags have to handle unknown tags gracefully.
+    --Since 3.15.0
+    tagSupport?: {
+      --The tags supported by this client
+      valueSet: DiagnosticTag[];
+    };
   };
   --Capabilities specific to `textDocument/foldingRange` requests.
   --
@@ -623,7 +638,11 @@ function protocol.make_client_capabilities()
 
         codeActionLiteralSupport = {
           codeActionKind = {
-            valueSet = vim.tbl_values(protocol.CodeActionKind);
+            valueSet = (function()
+              local res = vim.tbl_values(protocol.CodeActionKind)
+              table.sort(res)
+              return res
+            end)();
           };
         };
       };
@@ -643,7 +662,7 @@ function protocol.make_client_capabilities()
         completionItemKind = {
           valueSet = (function()
             local res = {}
-            for k in pairs(protocol.CompletionItemKind) do
+            for k in ipairs(protocol.CompletionItemKind) do
               if type(k) == 'number' then table.insert(res, k) end
             end
             return res
@@ -689,7 +708,7 @@ function protocol.make_client_capabilities()
         symbolKind = {
           valueSet = (function()
             local res = {}
-            for k in pairs(protocol.SymbolKind) do
+            for k in ipairs(protocol.SymbolKind) do
               if type(k) == 'number' then table.insert(res, k) end
             end
             return res
@@ -701,6 +720,18 @@ function protocol.make_client_capabilities()
         dynamicRegistration = false;
         prepareSupport = true;
       };
+      publishDiagnostics = {
+        relatedInformation = true;
+        tagSupport = {
+          valueSet = (function()
+            local res = {}
+            for k in ipairs(protocol.DiagnosticTag) do
+              if type(k) == 'number' then table.insert(res, k) end
+            end
+            return res
+          end)();
+        };
+      };
     };
     workspace = {
       symbol = {
@@ -708,7 +739,7 @@ function protocol.make_client_capabilities()
         symbolKind = {
           valueSet = (function()
             local res = {}
-            for k in pairs(protocol.SymbolKind) do
+            for k in ipairs(protocol.SymbolKind) do
               if type(k) == 'number' then table.insert(res, k) end
             end
             return res
@@ -723,6 +754,17 @@ function protocol.make_client_capabilities()
       dynamicRegistration = false;
     };
     experimental = nil;
+    window = {
+      workDoneProgress = true;
+      showMessage = {
+        messageActionItem = {
+          additionalPropertiesSupport = false;
+        };
+      };
+      showDocument = {
+        support = false;
+      };
+    };
   }
 end