# $EPIC: log_rewrite,v 1.3 2002/01/13 00:27:11 anders Exp $
Synopsis:
   set(4) log_rewrite 

Description:
    If this /SET is defined (by default, it is un-set), then every
    time a LOGICAL line of output is about to be sent to a window, the
    /SET value is expanded, and the result of that expansion is substituted
    for the original text.  The expansion is parsed in the context that:
       $0      The window refnum the output is going to
       $1-     The text itself.

Examples:
   This would cause all output to all windows to be preceded in the logfile
   by +++
   /SET LOG_REWRITE +++$1-

   This would return proceed all output to all logfiles with the output of
   the user defined function $myfunc() called with the window number.
   /SET LOG_REWRITE $myfunc($0) $1-


Notes:
   When changing /set output_rewrite inside of an alias, please remember
   that $'s are expanded before the /set is called, and so things like
   $1- or $myfunc($0) would be expanded at the /set time and not at the
   rewrite time.  Make sure to double up your $$'s in such cases!

Practical:
   This provides an effective way to alter data as it is written to
   logfiles.