README for passive mode debugging

    eric4 provides the capability to debug programms using the passive
    mode. In this mode it is possible to start the debugger separate from
    the IDE. This may be done on a different computer as well. If the
    debugger is started on a remote machine, it is your responsibility
    to ensure, that the paths to the script to be debugged are identical
    on both machines.
    
    In order to enable passive mode debugging in the IDE choose the
    debugger tab of the preferences dialog and enable the passive mode
    debugging checkbox. You may change the default port as well. Please
    be aware that you have to tell the debugger the port, if it is different to the 
    default value of 42424.
    
    On the remote computer you have to have the debugger scripts installed.
    Use DebugClient.py to debug normal scripts or DebugClientThreads.py
    to debug multi threaded scripts. The debuggers know about the following
    commandline switches.
    
    -h <hostname> -- this specifies the hostname of the machine running the IDE.
    
    -p <portnumber> -- this specifies the portnumber of the IDE.
    
    -w <directory> -- this specifies the working directory to be used for the script
        to be debugged.
    
    -t -- this enables tracing into the Python library
    
    -n -- this disables the redirection of stdin, stdout and stderr
        
    The commandline parameters have to be followed by '--' (double dash),
    the script to be debugged and its commandline parameters.
    
    Example::
        python DebugClient -h somehost -- myscript.py param1
        
    After the execution of the debugger command, it connects to the IDE and
    tells it the filename of the script being debugged. The IDE will try to load it
    and the script will stop at the first line. After that you may set breakpoints,
    step through your script and use all the debugging functions.
    
    Note: The port and hostname may alternatively be set through the environment
    variables ERICPORT and ERICHOST.
    
    Please send bug reports, feature requests or contributions to eric bugs address
    <eric4-bugs@die-offenbachs.de> or using the buildt in bug reporting dialog.