Can't toggle comments

[gmarsano]

What version of Go, VS Code & VS Code Go extension are you using?

Version Information

• Run go version to get version of Go from the VS Code integrated terminal.

  • go version go1.26.3 linux/amd64

• Run gopls -v version to get version of Gopls from the VS Code integrated terminal.

  • golang.org/x/tools/gopls v0.22.0, built with go: go1.26.3

• Run code -v or code-insiders -v to get version of VS Code or VS Code Insiders.

  • 1.121.0 (f6cfa2ea2403534de03f069bdf160d06451ed282) x64

• Check your installed extensions to get the version of the VS Code Go extension

  • golang.go@0.52.2

• Run Ctrl+Shift+P (Cmd+Shift+P on Mac OS) > Go: Locate Configured Go Tools command.

  Go: Locate Configured Go Tools output

   # Tools Configuration
  
   ## Environment
  
   GOBIN: undefined
   toolsGopath:
   gopath: /home/gmarsano/go
   GOROOT: /usr/local/go
   PATH: /home/gmarsano/.config/composer/vendor/bin:/home/gmarsano/.local/bin:/home/gmarsano/.nvm/versions/node/v24.11.1/bin:/home/gmarsano/.config/composer/vendor/bin:/home/gmarsano/.local/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin:/usr/local/go/bin:/home/gmarsano/go/bin:/usr/local/go/bin:/home/gmarsano/go/bin
  
   ## Tools
  
   	go:      /usr/local/go/bin/go: go version go1.26.3 linux/amd64
   	gotests: /home/gmarsano/go/bin/gotests (version: v1.6.0 built with go: go1.26.3)
   	impl:    /home/gmarsano/go/bin/impl    (version: v1.4.0 built with go: go1.26.3)
   	goplay:  /home/gmarsano/go/bin/goplay  (version: v1.0.0 built with go: go1.26.3)
   	dlv:     /home/gmarsano/go/bin/dlv     (version: v1.26.3 built with go: go1.26.3)
   	gopls:   /home/gmarsano/go/bin/gopls   (version: v0.22.0 built with go: go1.26.3)
  

Share the Go related settings you have added/edited

"gopls": {
  "ui.semanticTokens": true
},
"[go]": {
  "editor.defaultFormatter": "golang.go"
},
"go.toolsManagement.autoUpdate": true

Describe the bug

editor.action.commentLine does not work on .go files. Whether triggered via keyboard shortcut or the Command Palette, the command is dispatched (confirmed with Developer: Toggle Keyboard Shortcuts Troubleshooting) but has no effect — lines are neither commented nor uncommented.

The issue appears to be exclusive to Go files managed by the vscode-go extension. The same command works correctly on other file types (e.g. JavaScript, Python).

Expected behavior: The current line (or selected lines) should be toggled between commented and uncommented using //.

Steps to reproduce the behavior:

1. Open any .go file in VS Code.
2. Place the cursor on a line with code (or select multiple lines).
3. Trigger editor.action.commentLine via its keyboard shortcut or via the Command Palette (Toggle Line Comment).
4. Observe that nothing happens — no comment is added or removed.

To confirm the command is reaching VS Code: enable Developer: Toggle Keyboard Shortcuts Troubleshooting, trigger the shortcut, and check the Output panel. The command appears in the log but produces no visible result.

[aputman]

I can't reproduce this issue with the exact same versions on darwin or linux/amd64. The Toggle Line Comment command works for both single and double line for me. This is with default settings and with your json applied.

To get some more relevant info, did this command previously work for you, and only recently stopped working?

[gmarsano]

To get some more relevant info, did this command previously work for you, and only recently stopped working?

I'm not sure. I recently configured vscode-go on this machine, and I think it was working fine a few days ago. The problem is that I can't remember whether I tried commenting something before, although that's the most likely case. Today I noticed it wasn't working.

[gmarsano]

Here what I get from the gopls (server) Output after calling the command Toggle Line Comment:

[Trace - 17:35:11.001 PM] Sending request 'textDocument/codeLens - (150)'.
Params: {"textDocument":{"uri":"file:///home/gmarsano/example-go/main.go"}}


[Trace - 17:35:11.001 PM] Received response 'textDocument/codeLens - (150)' in 0ms.
Result: null

Go related settings

  "gopls": {
    "ui.semanticTokens": true,
    "verboseOutput": true
  },
  "[go]": {
    "editor.defaultFormatter": "golang.go"
  },
  "go.toolsManagement.autoUpdate": true,
  "go.languageServerFlags": [
    "-rpc.trace"
  ]

I cannot find any other log that shows something weird after try with it.

[aputman]

Ok after further investigation, I'm pretty sure that vscode-go does't actually implement this functionality. I also don't get any logs on the LSP (client or server) for the actual change, just post-change logs:

[Trace - 10:57:48.325 AM] Sending notification 'textDocument/didChange'.

And the contents are the change of the "// " being added or removed. This is also supported by the comments in #3356. You can re-open this if that doesn't help.

[gmarsano]

This is also supported by the comments in #3356.

Well yes! there was a solution in this comment:

• Open VSCode extensions
• Type @builtin
• Search for go language basics and enable it

Thanks for your time @aputman