~/.vim/plugin とかに入れて，例えば nmap <Leader>eu <Plug>encodeURIComponent vmap <Leader>eu <Plug>encodeURIComponent nmap <Leader>du <Plug>decodeURIComponent vmap <Leader>du <Plug>decodeURIComponent nmap <Leader>ej <Plug>encodeJSString vmap <Leader>ej <Plug>encodeJSString nmap <Leader>dj <Plug>decodeJSString …</plug></leader></plug></leader></plug></leader></plug></leader></plug></leader></plug></leader></plug></leader>