Re: arranging vs. \page[last]

[Marco Pessotto <melmothx@gmail.com>]

Mari Voipio <mari.voipio@iki.fi> writes:

> On Mon, Jan 28, 2013 at 10:17 PM, Henning Hraban Ramm <hraban@fiee.net> wrote:
>>
>> What would you suggest to put something onto the last (i.e. back) page?
>
> The wiki has a trick, but I think it stopped working at some stage -
> maybe somebody can fix it (if it is broken):
> http://wiki.contextgarden.net/Imposition#Getting_the_last_page_of_a_Booklet
>
> (Obviously we aren't the only ones with this problem...)
>


I use the following code (luatex only).

\startusercode

function fillsignature(pages)
   -- skip the cover
   pages = pages - 2 
   local originalpages = pages

   --set needed pages to  0
   local neededpages = 0

   local modulo = pages % 4
   if modulo ~= 0 then
      neededpages = 4 - modulo
   end

   if neededpages ~= 0 then
      global.texio.write_nl('term and log', "Here I added " .. neededpages .. " pages")
      tex.print("\\dorecurse{" .. neededpages .. "}{\\page[empty]}")
   else
      global.texio.write_nl('No page needed!')
   end
end

\stopusercode

\define[1]\fillthesignature{
   \usercode{fillsignature(#1)}}

\define\bookletclosing{
  \fillthesignature{\the\realpageno}
  \page[empty]}

\setuppapersize[A5][A4,landscape]
\setuparranging[2UP]
\setuppagenumbering[alternative=doublesided]


\starttext


\dorecurse{10}{
        \input knuth
        \page[yes]
        \input knuth
}

\bookletclosing

This is the last page

\stoptext


Best wishes


-- 
Marco

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