%D \module
%D   [       file=trac-sig,
%D        version=2024.04.07,
%D          title=\CONTEXT\ Tracing Macros,
%D       subtitle=Squid mode,
%D         author=Hans Hagen,
%D           date=\currentdate,
%D      copyright={PRAGMA ADE \& \CONTEXT\ Development Team}]
%C
%C This module is part of the \CONTEXT\ macro||package and is
%C therefore copyrighted by \PRAGMA. See mreadme.pdf for
%C details.

\writestatus{loading}{ConTeXt Tracing Macros / Squid mode}

\unprotect

\registerctxluafile{trac-sig}{autosuffix}

\ifdefined\clf_squid_init
    % not delayed
\else
    % looks nicer in m-system-macros overview:
    \let\clf_squid_init\relax
    \let\clf_squid_busy\relax
    \let\clf_squid_step\relax
    \let\clf_squid_done\relax
\fi

\permanent\protected\def\enablesquidmode
  {\ifrelax\clf_squid_init
     % no signal device used
   \else
    %\toksapp\everyaftershipout{\clf_squid_busy}%
     \toksapp\everyaftershipout{\clf_squid_step}%
     \toksapp\everygoodbye     {\clf_squid_done}%
     \clf_squid_init
     \clf_squid_busy
   \fi}

\prependtoks
    \clf_squid_check
\to \everystarttext

\protect \endinput