DOKK / manpages / debian 10 / tkcon / observe.3tk.en
observe(3tk) observe(3tk) 







observe - Runtime debugging output in TkCon








observe command cmdname ?maxlevel?


observe cdelete cmdname


observe cinfo cmdname


observe variable varname operation
    ?args?


observe vdelete varname operation


observe vinfo varname












This command provides runtime debugging output for variables and
    commands without the need to edit your code. For variables, the underlying
    mechanism uses trace and dump var. For commands, it renames
    the observed procedure and uses a special wrapper procedure. WARNING: using
    this procedure after checkpointing state will result in major problems if
    you clean state because the renamed (true) commands will be lost.


This procedure is experimental. Comments are encouraged.



  

  
This will create a wrapper command which prints out (using dump)
      the call stack to the console. maxlevel represents the maximum number of
      levels of the call stack which will be printed (defaults to 4).

  

  
Removes the wrapper around an observed command.

  

  
Prints out useless info.

  

  
Currently a wrapper around trace that uses dump to print out the
      value of the named variable whenever the specified operation on that
      variable occurs (must be read, write or unset).

  

  
Deletes the trace wrapper around the named variable.

  

  
Prints out trace info about the named variable.










dump(3tk), idebug(3tk), tkcon(1),
    tkcon(3tk), tkconrc(5)








Tk, console, debug








Copyright (c) Jeffrey Hobbs <jeff at hobbs.org>








  

    2.5
    TkCon