emacs-29 546aed3543: eglot: Add support for new language server csharp-ls

[Stefan Kangas]

branch: emacs-29
commit 546aed35434fb2cd4082dc2cee93236b9b62a60c
Author: Jostein Kjønigsen <jostein@kjonigsen.net>
Commit: Stefan Kangas <stefankangas@gmail.com>

    eglot: Add support for new language server csharp-ls
    
    C# has two popular language servers: Omnisharp Roslyn (already
    supported) and csharp-ls (newer, more performant).
    
    * lisp/progmodes/eglot.el: Add new C# language server
    csharp-ls.  (Bug#60089)
---
 lisp/progmodes/eglot.el | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/lisp/progmodes/eglot.el b/lisp/progmodes/eglot.el
index 02bb6bb665..bb07a06dde 100644
--- a/lisp/progmodes/eglot.el
+++ b/lisp/progmodes/eglot.el
@@ -241,7 +241,9 @@ chosen (interactively or automatically)."
                                 ((clojure-mode clojurescript-mode 
clojurec-mode)
                                  . ("clojure-lsp"))
                                 ((csharp-mode csharp-ts-mode)
-                                 . ("omnisharp" "-lsp"))
+                                 . ,(eglot-alternatives
+                                     '(("omnisharp" "-lsp")
+                                       ("csharp-ls"))))
                                 (purescript-mode . 
("purescript-language-server" "--stdio"))
                                 ((perl-mode cperl-mode) . ("perl" 
"-MPerl::LanguageServer" "-e" "Perl::LanguageServer::run"))
                                 (markdown-mode . ("marksman" "server")))