endfor
let out = systemlist("column -t -s \"\t\"", add(in, ""))
for n in range(a:first, a:last)
- call setline(n, substitute(out[n - a:first], " " . s:sep, a:sep, "g"))
+ call setline(n, substitute(out[n - a:first], " " . s:sep, escape(a:sep, "&"), "g"))
endfor
endfunction