On Sun, Oct 17, 2010 at 10:24, Hans Hagen
<pragma@wxs.nl> wrote:
On 17-10-2010 4:06, Tad Ashlock wrote:
I'm trying to update a ConTeXt module of mine. It does some data gathering
during the ConTeXt run, and then processes it after the run is complete.
This used to work last year:
local id, err = callback.register('stop_run', new_stop_run_function)
But now err is set to "callback 'stop_run' is frozen (actions performed at
the end of a run)".
After trying various approaches for a couple of hours, I'm calling for help.
:)
Here's what I ended up with:
\startluacode
print('%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% TEST1')
local function after_run (head, groupcode)
print('%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% TEST2')
return head, true
end
nodes.tasks.appendaction('finalizers','after','after_run')
\stopluacode
\starttext
\input knuth
\stoptext
In the output, I see the TEST1 line, but not the TEST2 line.
because after_run is not seen,
function myprivatenamespace.after_run ...
nodes.tasks.appendaction('finalizers','after','myprivatenamespace.after_run')
whatever, it's not the place to hook in your finalizer as there finalizers are just a specific place in node list processing
I have no idea if 'finalizers' is the right parameter, but I didn't see any
others that looked like it could be synonymous with 'stop_run'.
You can use (preferable no messages there):
luatex.registerstopactions(yourfunction)
or for messages:
statistics.register("banner",function() return "text" end)
in this case returning false (or nil) will not show the statistic which makes sense if there's nothing useful to report.
At some point there will be a formal description for this.
Hans
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