How does the short key to open a referenced function work in vim?

Question

In vim, I move cursor to the function I'm interested in,

then press ^W,

then press gf.

It'll automatically open the referenced function.

How does it work?

Answer 1

:he CTRL-W_gf says it will open file under cursor in new tab.

If it does something else try :verbose nmap <C-w>gf to see if there is a mapping which does anything else.