bug#81425: 30.2; eglot: Error running timer: (error "Glob ’.NETCore App,Versio n=v10.0.As semblyAttr ibutes.cs’ invalid at 12")

Ping!  João, any further comments?

> Date: Thu, 16 Jul 2026 23:18:13 +0000
> From: Simon Guest <[email protected]>
> Cc: Eli Zaretskii <[email protected]>, [email protected]
> 
> OK, fair enough.  Here is a minimal repro, with vanilla Emacs 31 pre-release and a newly created dotnet project.
> 
> Install Emacs 31 and dotNET 10, then:
> 
> $ emacs --version
> GNU Emacs 31.0.90
> Copyright (C) 2026 Free Software Foundation, Inc.
> GNU Emacs comes with ABSOLUTELY NO WARRANTY.
> You may redistribute copies of GNU Emacs
> under the terms of the GNU General Public License.
> For more information about these matters, see the file named COPYING.
> 
> $ dotnet --list-sdks
> 10.0.301 [/nix/store/rw0qr991694vw0wl8546zc868z6f5n7m-dotnet-sdk-10.0.301/share/dotnet/sdk]
> 
> 
> Create a new project in current directory (assumed empty):
> 
> $ dotnet new console
> 
> 
> Install roslyn-language-server as a local dotnet tool (only available as prerelease so far):
> See https://github.com/dotnet/roslyn/blob/main/src/LanguageServer/Microsoft.CodeAnalysis.LanguageServer/README.md
> 
> $ dotnet tool install --local roslyn-language-server --prerelease
> 
> 
> Check the language server is happy:
> 
> $ dotnet roslyn-language-server --version
> 5.9.0-1.26303.1+d74775a9e15f1ec193c5cc4dd37653b5ef447a2c
> 
> If instead it says you must install .NET to run this application, then something like this is required, according to where you installed dotnet:
> 
> $ export DOTNET_ROOT=/nix/store/rw0qr991694vw0wl8546zc868z6f5n7m-dotnet-sdk-10.0.301/share/dotnet
> $ ls $DOTNET_ROOT
> dnx  dotnet  host  library-packs  LICENSE.txt  metadata  packs  sdk  sdk-manifests  shared  templates  ThirdPartyNotices.txt
> 
> 
> Start vanilla Emacs with this language server:
> 
> $ emacs -nw -Q --eval "(progn (with-eval-after-load 'eglot (add-to-list 'eglot-server-programs '(csharp-mode . (\"dotnet\" \"roslyn-language-server\" \"--stdio\" \"--autoLoadProjects\")))) (find-file \"Program.cs\") (eglot-ensure))"
> 
> Notice this message:
> Error running timer: (error "Glob ’.NETCoreApp,Version=v10.0.AssemblyAttributes.cs’ invalid at 12")
> 
>