Copy lines and execute in terminal window

Question

Edit a python file with vim adddf.py, and type vert term and python3, there are two windows in vim.

cat adddf.py
def add_df(df,number):
    import re
    new_df = pd.DataFrame()
    nrow = df.shape[0]
    ncol = df.shape[1]
    for i in range(0,nrow):
        for j in range(0,ncol):
            new_df.at[i,j] =  df.iloc[i,j] + number
    return new_df

I want to copy some lines and execute it in left window, write a function:

function! CopyRun(start,stop)
    normal a:start,a:stop y+
    wincmd p
    call feedkeys("\<C-W>\"+")
endfunction

When I call it with:

call CopyRun(1,9)

I get the following output

1. Nothing executed in python terminal,and nothing in + register
2. the previous python function changed into below:

    d:start:stop y+ef add_df(df,number):
        import re
        new_df = pd.DataFrame()
        nrow = df.shape[0]
        ncol = df.shape[1]
        for i in range(0,nrow):
            for j in range(0,ncol):
                new_df.at[i,j] =  df.iloc[i,j] + number
        return new_df

3. in bottom left, it says: emmet#anchorizeURL(0)

After following the answer from Maxim Kim in my .vimrc.

I get a new issue :

exe "normal! " . a:start . "," . a:stop . "y+"  

How to fix it?

Answer 1

1. Check if your vim supports + register, :version output should include +clipboard. I would suggest to use other registers for that.

2. Your normal command is wrong. Try smth like:

function! CopyRun(start,stop)
    " This would still not work as normal commands do not take range as ex commands...
    exe "normal! " . a:start . "," . a:stop . "y+"
    wincmd p
    call feedkeys("\<C-W>\"+")
endfunction

In your case with normal you literally run a then : then s etc. Here :execute helps with running a string as a vim command so you can construct your command with string concatenation (or with printf()).

It says emmet...something because you have used normal without ! mark meaning every letter might be remapped as happened here where your emmet plugin has been triggered.

PS

You can also check the source of https://github.com/habamax/vim-sendtoterm plugin.

PPS

better use :yank command (:h yank)

function! CopyRun(start,stop)
    exe a:start . "," . a:stop ."yank +"
    wincmd p
    call feedkeys("\<C-W>\"+")
endfunction