Merge pull request #263 from emacs-csharp/feature/stefan-patch

Implement patch from Stefan Monnier <monnier@iro.umontreal.ca>

Author: josteink

csharp-mode.el

@@ -1,6 +1,6 @@
 ;;; csharp-mode.el --- C# mode derived mode  -*- lexical-binding: t; -*-
 
-;; Copyright (C) 2020-2021 Free Software Foundation, Inc.
+;; Copyright (C) 2020-2022  Free Software Foundation, Inc.
 
 ;; Author     : Theodor Thornhill <theo@thornhill.no>
 ;; Maintainer : Jostein Kjønigsen <jostein@gmail.com>
@@ -68,12 +68,16 @@
 (eval-and-compile
   (c-add-language 'csharp-mode 'java-mode))
 
+(defun csharp--make-mode-syntax-table ()
+  (let ((table (make-syntax-table)))
+    (c-populate-syntax-table table)
+    (modify-syntax-entry ?@ "_" table)
+    table))
+(defvar csharp--make-mode-syntax-table #'csharp--make-mode-syntax-table
+  "Workaround for Emacs bug#57065.")
+
 (c-lang-defconst c-make-mode-syntax-table
-  csharp `(lambda ()
-            (let ((table (make-syntax-table)))
-              (c-populate-syntax-table table)
-              (modify-syntax-entry ?@ "_" table)
-              table)))
+  csharp #'csharp--make-mode-syntax-table)
 
 (c-lang-defconst c-identifier-syntax-modifications
   csharp (append '((?@ . "w"))
@@ -563,14 +567,14 @@ compilation and evaluation time conflicts."
 
 (defvar csharp-mode-syntax-table
   (funcall (c-lang-const c-make-mode-syntax-table csharp))
-  "Syntax table used in csharp-mode buffers.")
+  "Syntax table used in `csharp-mode' buffers.")
 
 (defvar csharp-mode-map
   (let ((map (c-make-inherited-keymap)))
     map)
-  "Keymap used in csharp-mode buffers.")
+  "Keymap used in `csharp-mode' buffers.")
 
-(easy-menu-define csharp-mode-menu csharp-mode-map "C# Mode Commands"
+(easy-menu-define csharp-mode-menu csharp-mode-map "C# Mode Commands."
   (cons "C#" (c-lang-const c-mode-menu csharp)))
 
 ;;;###autoload