Vim: temporarily show only specific lines

Question

Sometimes, in Vim, I want to show only a specific part of a file (for example, a specific method) while hiding the rest.

This helps me to focus at the problem at hand.

I would like to do so without actually changing the file. Any idea on how to do this?

cheers & regards, Klaas

Answer 1

Similar to the already mentioned narrow plug-in, there's NrrwRgn. Visual select the region, :NR and the window is split with the selected region isolated in the new window. Very useful for coding, indeed.