I have an `exe` program that checks for certain errors in a text file.

I want to create a shortcut (like `\+M`) to run that `exe` file against the text file.

My `exe` file's path is `C:\Users\xyz\Documents\Checker\manager.exe`, the text file's path is `C:\Users\xyz\Desktop\mytextfile.txt`.

The manager just needs the following command:

    check [full filepath to the text file

Here is what I have tried in the VIM plugin file.

    function! ExecuteManagerCheck(file)
        execute ':!start cmd /k "C:\Users\xyz\Documents\checker\manager check " g:file'
    endfunction

    nmap <leader>m :call ExecuteManagerCheck(expand('%:p')) <cr>

Can someone please help me get the full file path to the current text file open in Vim?