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From: "Procházka Lukáš Ing. - Pontex s. r. o." <LPr@pontex.cz>
To: ConTeXt <ntg-context@ntg.nl>
Subject: Hooking stoptext
Date: Tue, 08 Oct 2013 13:22:17 +0200	[thread overview]
Message-ID: <op.w4mu7foptpjj8f@lpr> (raw)

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Hello,

I'm trying to hook commands.stoptext()...

Here's a minimal example: why only the first image appears?

----
\startluacode
   local cmd_p
   local tab = {}

   f = function(a)
     if not cmd_p then
       cmd_p = commands.stoptext

       commands.stoptext = function(...)
         context("Hook")

         for _, v in ipairs(tab) do
           context.startTEXpage()
             context.externalfigure{v}
           context.stopTEXpage()
         end

         cmd_p(...)
       end
     end

     table.insert(tab, a)
   end
\stopluacode

\starttext
   A
   \ctxlua{f("cow")}
   \ctxlua{f("hacker")}
\stoptext
----

When I modify the code:

----
...
         for _, v in ipairs(tab) do
           --context.startTEXpage()
             context.externalfigure{v}
           --context.stopTEXpage()
         end
...
----

all figures are shown OK.

Where's the problem?

TIA.

Best regards,

Lukas


-- 
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
  local cmd_p
  local tab = {}

  f = function(a)
    if not cmd_p then
      cmd_p = commands.stoptext

      commands.stoptext = function(...)
        context("Hook")

        for _, v in ipairs(tab) do
          context.startTEXpage()
            context.externalfigure{v}
          context.stopTEXpage()
        end

        cmd_p(...)
      end
    end

    table.insert(tab, a)
  end
\stopluacode

\starttext
  A
  \ctxlua{f("cow")}
  \ctxlua{f("hacker")}
\stoptext

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             reply	other threads:[~2013-10-08 11:22 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-10-08 11:22 Procházka Lukáš Ing. - Pontex s. r. o. [this message]
2013-10-08 11:34 ` Aditya Mahajan
2013-10-08 11:40 ` Marco Patzer
2013-10-08 11:43   ` Marco Patzer
2013-10-08 11:52   ` Procházka Lukáš Ing. - Pontex s. r. o.
  -- strict thread matches above, loose matches on Subject: below --
2012-03-07 14:28 Hooking \stoptext Procházka Lukáš Ing. - Pontex s. r. o.
2012-03-07 14:39 ` luigi scarso
2012-03-07 15:14   ` luigi scarso
2012-03-07 15:26   ` Procházka Lukáš Ing. - Pontex s. r. o.
2012-03-07 15:50 ` Philipp Gesang
2012-03-07 15:57   ` Procházka Lukáš Ing. - Pontex s. r. o.
2012-03-07 17:37     ` Wolfgang Schuster
2012-03-07 23:07       ` Wolfgang Schuster

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