How do I close all folds and then open just the one containing the cursor to focus on it?

Explanation

The zMzv sequence collapses every fold in the file and then re-opens only the one containing your cursor. This gives you a clean, focused view of the section you are working in while hiding everything else.

How it works

• zM — close all folds in the file recursively, collapsing everything to the top-level fold markers
• zv — "view" the cursor line: open the minimum number of folds needed so the cursor is visible, without opening any sibling or parent folds unnecessarily

The combination works because zM first reduces the file to a compact outline, and zv then selectively exposes exactly where you are — nothing more.

Example

Given a file with three top-level functions folded:

+-- 15 lines: function authenticate() --------
+-- 22 lines: function processPayment() ------
+-- 18 lines: function sendReceipt() ---------

With the cursor inside processPayment, pressing zMzv results in:

+-- 15 lines: function authenticate() --------
function processPayment() {
    // ... full body visible ...
}
+-- 18 lines: function sendReceipt() ---------

Tips

• Map this to a key for quick refocusing: nnoremap <leader>z zMzv
• zR reopens all folds if you need the full view back
• zo opens one fold level at the cursor; zO opens recursively
• Combine with zz (center cursor) for a centered focused view: zMzvzz