On Thu, Mar 26, 2009 at 4:39 PM, luigi scarso <luigi.scarso@gmail.com>wrote:

> the problem is in your definition of 'end' and 'bottom'
>>
> ??
> end := end of run
> bottom := bottom of last page, in this case
>
>
>
>>
>> the real final thing is \end and \everygoodbye happens just before that
>> (the only calls after it are postponed error messages, which have no
>> consequence for any pdf and the primitive \end which is really needed)
>>
> yes, as I seen  in \def\stoptext
>
>
>> of course there can be pending conditional branches that needs to be
>> finished; just try \appendtoks\tracingall\to\everygoodbye
>>
> true
>
>
>>
>> You can also do something
>>
>> \startluacode
>>    table.insert(input.stop_actions, function()
>>        texio.write_nl("I still have no clue why you need it.")
>>    end)
>> \stopluacode
>>
>
>  ok thank you -- I like lua code  --
>
>
>>
>> any other hook in itself will introduce a new situation of 'something done
>> before the real \end'
>>
>
> exactly what I mean:
> "any other hook in itself will introduce a new situation of 'something done
> before the real \end'"
> that potentially can modify current page .
>
>
>
>
> Consider this:
> between
> final_cleanup; {prepare for death}
>
> and
> end_of_TEX: close_files_and_terminate;
>
> insert
> {************* MY HACK ************}
> almost_death ;{I see state, but it's  'frozen' so any modification  will
> never influence  pdf or dvi , only to log or terminal or external files}
> {*******************************************}
>
> in   almost_death you can do what ever you want -- you will never modify
> (relevant part of ) state
> that can influence final pdf or dvi .
>
> ==================================================
>
> @ Now this is really it: \TeX\ starts and ends here.
>
> The initial test involving |ready_already| should be deleted if the
> \PASCAL\ runtime system is smart enough to detect such a ``mistake.''
> @^system dependencies@>
>
> @p begin @!{|start_here|}
> history:=fatal_error_stop; {in case we quit during initialization}
> t_open_out; {open the terminal for output}
> if ready_already=314159 then goto start_of_TEX;
> @<Check the ``constant'' values...@>@;
> if bad>0 then
>   begin wterm_ln('Ouch---my internal constants have been clobbered!',
>     '---case ',bad:1);
> @.Ouch...clobbered@>
>   goto final_end;
>   end;
> initialize; {set global variables to their starting values}
> @!init if not get_strings_started then goto final_end;
> init_prim; {call |primitive| for each primitive}
> init_str_ptr:=str_ptr; init_pool_ptr:=pool_ptr; fix_date_and_time;
> tini@/
> ready_already:=314159;
> start_of_TEX: @<Initialize the output routines@>;
> @<Get the first line of input and prepare to start@>;
> history:=spotless; {ready to go!}
> @<Initialize synctex primitive@>
> main_control; {come to life}
> final_cleanup; {prepare for death}
> {************* MY HACK ************}
> almost_death ;{I see state, but it's  'frozen' so any modification  will
> never influence  pdf or dvi , only to log or terminal or external files}
> {*******************************************}
> end_of_TEX: close_files_and_terminate;
> final_end: ready_already:=0;
> end.
>
> =======================================
>
>
> anyway,  as I wrote , this is not bad:
>
> \def\LuigisWhateverShouldHappen{\immediate\write16{BOOOM!}Something
> Luigi want to do for some unknown reason.\immediate\write16{BOOOM!}}
>

For example, this looks a bit better -- no
Something Luigi want to do for some unknown reason.

\def\LuigisWhateverShouldHappen{%
\vbox to 0pt{\vss\hbox to 0pt{\hss \immediate\write16{BOOOM!}Something Luigi
want to do for some unknown reason.
\immediate\write16{BOOOM!}}}}


-- 
luigi