observe(n) observe(n)


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(n), idebug(n), tkcon(1), tkcon(n), tkconrc(5)

Tk, console, debug

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