vim: help for scripting

whenever I come to a scenario that I have to (or better) script in vim ,
it becomes a big headache and time consuming work -- turning my goal of
efficiency boosting to the reverse effect --- spending a lotof time
without success. I feel guilty to seek help for "simple-looking" task,
but seems I have to...

ok, anyway...

say I want to achive one thing :
in some setups , I need to open 2 new window for some quick work, and I
can hit <cr> to jump between that 2 new windows (you will know better
what I'm
talking about if you ever used Voom plugin or other similiar tools)

now , after some while I want to close those 2 newly opened windows --
of course I can just close them manually, but I think this is really
something can be done via a small map or func, making it much easier if
I can then map it to a short key. so here is what I thought "should
have" worked but not...

function! QuitNR()
"get number of one win
let wn_curr=winnr()
"jump to the other win
normal! <CR>
"get number of that win
let wn_pair=winnr()
"jump to the window
exec wn_curr . "wincmd w"
"close it
close
"jump to the other one
exec wn_pair . "wincmd w"
"and close that one too
close
endfu

nn vV :call QuitNR()<CR>

it looks sth got break in it, at least followig doesn't work when I
tested it manually:

normal! <CR>

I thought this is equivalent to hitting a return, which jumps to the
other window , which is what will happen if I hit return myself in
Voom...but
that "jump" doesn't happen here in the script.

any thought?


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