How can I make the line number field display numbers in hex?

Question

I am doing a side project where I need to type in the value to line numbers. It would be fine to just type it into a calculator, but that would be slow for many times. I tried digging around settings and google but found nothing so far. How can I make the line numbers be in hex, instead? Like line 1 be displayed as 01 and line 42 be displayed as 2a? If there is no extension already, how may I go about coding this?

Answer 1

This may be able to be done with a text decorator - for an example.

Also it is very easy to set up an extension that gets the hex version of a line number by right-clicking the line number (and choosing a command). Let me know if this works for you.

In your package.json you would have these contributes:

"contributes": {
    "commands": [
        {
            "command": "folder-operations.getLineNumberHex",
            "title": "Copy the hex for this line number"
        }
       ],

    "menus": {
        "editor/lineNumber/context": [
            {
                    "command": "folder-operations.getLineNumberHex"
            }
        ]
    }
}

using your own publisherID for the command. And in your extension.js activate function you would have this command registration:

let disposable = vscode.commands.registerCommand('folder-operations.getLineNumberHex', async (args) => {

    // args.lineNumber is 1-based
    const hexLineNumber = Number(args.lineNumber).toString(16);
    await vscode.env.clipboard.writeText(hexLineNumber);
});

Here it is working: