Re: Hooking \stoptext

["Procházka Lukáš Ing. - Pontex s. r. o." <LPr@pontex.cz>]

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... OK, your solution works -

- But I'd need one which doesn't force user to hook manually; i.e. without:

----
\let\Oldstoptext\stoptext
\def\stoptext{%
   \startluacode
   context("END")
   \stopluacode
   \Oldstoptext
}
----

Hooking should be performed in a Lua function and should be "invisible" to the user.

More complicated example:

---- t-Hook4.mkiv
\startluacode
   function foo()
     local stoptext_p = context.stoptext

     context.stoptext = function(...)
       context("END")
       stoptext_p(...)
     end
   end
\stopluacode

\starttext
   \input knuth

   \ctxlua{foo()} % This should cause "END" to appear at the end of the document
\stoptext
----

In this case, "foo()" is a function which does the hooking; and "foo()" may be placed in another file or Lua toolbox, so user is to call Lua's "require 'my-Lua-toolbox-with-foo' foo()".

So user is not forced to know how the function works; once he uses it, the text "END" will appear at the end of the document.

- And this doesn't happen to me; and my goal is to make it work.

Lukas


On Wed, 07 Mar 2012 15:39:23 +0100, luigi scarso <luigi.scarso@gmail.com> wrote:

> 2012/3/7 Procházka Lukáš Ing. - Pontex s. r. o. <LPr@pontex.cz>
>
>> Hello,
>>
>> I'd need to to hook \stoptext by Lua - I'd need to write something right
>> before the end of the text.
>>
>
> At least
> \let\Oldstoptext\stoptext
> \def\stoptext{%
> \startluacode
> context("END")
> \stopluacode
> \Oldstoptext}
>
>
> \starttext
>  \input knuth
> \stoptext % To be hooked by Lua
>
>
> But there are several \every* tokens list for this.


-- 
Ing. Lukáš Procházka [mailto:LPr@pontex.cz]
Pontex s. r. o.      [mailto:pontex@pontex.cz] [http://www.pontex.cz]
Bezová 1658
147 14 Praha 4

Tel: +420 244 062 238
Fax: +420 244 461 038

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\startluacode
  function foo()
    local stoptext_p = context.stoptext

    context.stoptext = function(...)
      context("END")
      stoptext_p(...)
    end
  end
\stopluacode

\starttext
  \input knuth

  \ctxlua{foo()} % This should cause "END" to appear at the end of the document
\stoptext

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