VS Code原生或通过扩展能否实现未保存修改文件与磁盘已保存版本的对比？

Absolutely! VS Code has solid ways to compare your unsaved, modified file against the version saved on disk—both natively (no extensions needed) and via handy add-ons. Here's how to do it:

Native VS Code Methods #

Compare with Saved Command #

This is the quickest built-in way:

• Have your modified, unsaved file open in the editor.
• Bring up the command palette with Ctrl+Shift+P (Windows/Linux) or Cmd+Shift+P (Mac).
• Search for and select File: Compare with Saved.
• You’ll get a side-by-side diff view: your unsaved changes live in the left pane, while the last saved disk version is on the right. Use the diff navigation controls at the top to jump between changes, or right-click lines to revert specific edits if needed.

Explorer Context Menu #

If your file is part of a workspace, you can also do this directly from the sidebar:

• Right-click the file in the Explorer panel.
• Select Compare with Saved from the menu—this launches the same side-by-side diff as the command palette method.

Extension Options (For Extra Flexibility) #

While the native tools work great, extensions can add extra polish or advanced features:

• GitLens: This fan-favorite Git extension doesn’t just boost Git workflows—it makes diffing even more intuitive. You’ll see inline change indicators in the gutter, and can quickly trigger an unsaved vs saved comparison with a single click on those indicators.
• Advanced Diff Tools: Extensions like Diff & Merge Tools offer customizable diff views, syntax highlighting tweaks, and merge helpers for when you need more control over how you review changes.

No matter which method you pick, you’ll get a clear, visual breakdown of exactly what’s changed between your unsaved edits and the last version you wrote to disk—just like Vim’s equivalent feature.

内容的提问来源于stack exchange，提问作者Tryer