How does this line of code work?
imap <C-L> @@@<esc>hhkywjl? @@@<CR>P/@@@<cr>3s
This is a mapping of insert mode. It seems that the purpose is to copy a word above the cursor to the current position.
The general principle is this:
@@@This is actually a place holder. It is convenient for the following two positioning (? And/). After understanding this, the rest …
hhkMove the cursor into the upper word
PPaste above the current line, that is, the line where the cursor was originally located.
3sIs to delete the three
The rest will not be explained one by one.