+" something that won't be met anywhere
+let s:sep = "₀◎○ë"
+
+function! align#do(first, last, sep) abort
+ let in = []
+ for n in range(a:first, a:last)
+ let in = add(in, substitute(getline(n), a:sep, "\t" . s:sep, "g"))
+ 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"))
+ endfor
+endfunction