VSCode - Replace Tab with 4 Spaces and keep the spaces on save for Go

Check below settings:

 

Method 1: Choose "goformat" for Go's Format Tool:

If got below error message, click the Install button or run the command:

The "goformat" command is not available. Run "go install -v winterdrache.de/goformat/goformat@v0.0.0-20180512004123-256ef38c4271" to install.

 

Press F1.

Input 'Open Settings'.

Select 'Open User Settings (JSON)'.

See below content in the user settings.json:

{
    "go.formatTool": "goformat"
}

 

Method 2: Set Go's "editor.formatOnSave" to false:

Install extention "Tab to Space", then set a shortcut key binding for the action:

You can use the shortcut to replace tab with spaces.

Then make the following settings:

Then manually change the value for "editor.formatonSave" to false in the settings.json file:

You can manually format your code by using shortcut "Ctrl + Shift + I", and then replace tab with spaces by using the shortcut "Alt + S" you defined. 

 

Because "goformat" can't recognize generics, you may have to choose method 2 if you want the spaces be kept on save.

 

{
    "workbench.startupEditor": "none",
    "[go]": {
        "editor.insertSpaces": true,
        "editor.formatOnSave": false
    },
    "editor.fontSize": 16,
    "terminal.integrated.fontSize": 16,
    "go.toolsManagement.autoUpdate": true,
    "go.testFlags": [
        "-count=1",
        "-v"
    ],
    "gopls": {
        "ui.semanticTokens": true
    },
    "editor.detectIndentation": false
}