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<h1>eric6.DebugClients.Python.DebugBase</h1>
<p>
Module implementing the debug base class which based originally on bdb.
</p>
<h3>Global Attributes</h3>
<table>
<tr><td>gRecursionLimit</td></tr>
</table>
<h3>Classes</h3>
<table>
<tr>
<td><a href="#DebugBase">DebugBase</a></td>
<td>Class implementing base class of the debugger.</td>
</tr>
</table>
<h3>Functions</h3>
<table>
<tr>
<td><a href="#printerr">printerr</a></td>
<td>Module function used for debugging the debug client.</td>
</tr><tr>
<td><a href="#setRecursionLimit">setRecursionLimit</a></td>
<td>Module function to set the recursion limit.</td>
</tr>
</table>
<hr /><hr />
<a NAME="DebugBase" ID="DebugBase"></a>
<h2>DebugBase</h2>
<p>
    Class implementing base class of the debugger.
</p><p>
    Provides methods for the 'owning' client to call to step etc.
</p>
<h3>Derived from</h3>
object
<h3>Class Attributes</h3>
<table>
<tr><td>_fnCache</td></tr><tr><td>filesToSkip</td></tr><tr><td>lib</td></tr><tr><td>pathsToSkip</td></tr>
</table>
<h3>Class Methods</h3>
<table>
<tr><td>None</td></tr>
</table>
<h3>Methods</h3>
<table>
<tr>
<td><a href="#DebugBase.__init__">DebugBase</a></td>
<td>Constructor</td>
</tr><tr>
<td><a href="#DebugBase.__checkBreakInFrame">__checkBreakInFrame</a></td>
<td>Private method to check if the function / method has a line number which is a breakpoint.</td>
</tr><tr>
<td><a href="#DebugBase.__do_clearBreak">__do_clearBreak</a></td>
<td>Private method called to clear a temporary breakpoint.</td>
</tr><tr>
<td><a href="#DebugBase.__do_clearWatch">__do_clearWatch</a></td>
<td>Private method called to clear a temporary watch expression.</td>
</tr><tr>
<td><a href="#DebugBase.__eventPollTimer">__eventPollTimer</a></td>
<td>Private method to set a flag every 0.5 s to check for new messages.</td>
</tr><tr>
<td><a href="#DebugBase.__extractExceptionName">__extractExceptionName</a></td>
<td>Private method to extract the exception name given the exception type object.</td>
</tr><tr>
<td><a href="#DebugBase.__extract_stack">__extract_stack</a></td>
<td>Private member to return a list of stack frames.</td>
</tr><tr>
<td><a href="#DebugBase.__sendCallTrace">__sendCallTrace</a></td>
<td>Private method to send a call/return trace.</td>
</tr><tr>
<td><a href="#DebugBase.__skipFrame">__skipFrame</a></td>
<td>Private method to filter out debugger files.</td>
</tr><tr>
<td><a href="#DebugBase._set_stopinfo">_set_stopinfo</a></td>
<td>Protected method to update the frame pointers.</td>
</tr><tr>
<td><a href="#DebugBase.bootstrap">bootstrap</a></td>
<td>Public method to bootstrap a thread.</td>
</tr><tr>
<td><a href="#DebugBase.break_here">break_here</a></td>
<td>Public method reimplemented from bdb.py to fix the filename from the frame.</td>
</tr><tr>
<td><a href="#DebugBase.fix_frame_filename">fix_frame_filename</a></td>
<td>Public method used to fixup the filename for a given frame.</td>
</tr><tr>
<td><a href="#DebugBase.getCurrentFrame">getCurrentFrame</a></td>
<td>Public method to return the current frame.</td>
</tr><tr>
<td><a href="#DebugBase.getFrameLocals">getFrameLocals</a></td>
<td>Public method to return the locals dictionary of the current frame or a frame below.</td>
</tr><tr>
<td><a href="#DebugBase.getStack">getStack</a></td>
<td>Public method to get the stack.</td>
</tr><tr>
<td><a href="#DebugBase.go">go</a></td>
<td>Public method to resume the thread.</td>
</tr><tr>
<td><a href="#DebugBase.profile">profile</a></td>
<td>Public method used to trace some stuff independent of the debugger trace function.</td>
</tr><tr>
<td><a href="#DebugBase.profileWithRecursion">profileWithRecursion</a></td>
<td>Public method used to trace some stuff independent of the debugger trace function.</td>
</tr><tr>
<td><a href="#DebugBase.run">run</a></td>
<td>Public method to start a given command under debugger control.</td>
</tr><tr>
<td><a href="#DebugBase.setRecursionDepth">setRecursionDepth</a></td>
<td>Public method to determine the current recursion depth.</td>
</tr><tr>
<td><a href="#DebugBase.set_continue">set_continue</a></td>
<td>Public method to stop only on next breakpoint.</td>
</tr><tr>
<td><a href="#DebugBase.set_next">set_next</a></td>
<td>Public method to stop on the next line in or below the given frame.</td>
</tr><tr>
<td><a href="#DebugBase.set_quit">set_quit</a></td>
<td>Public method to quit.</td>
</tr><tr>
<td><a href="#DebugBase.set_return">set_return</a></td>
<td>Public method to stop when returning from the given frame.</td>
</tr><tr>
<td><a href="#DebugBase.set_step">set_step</a></td>
<td>Public method to stop after one line of code.</td>
</tr><tr>
<td><a href="#DebugBase.set_trace">set_trace</a></td>
<td>Public method to start debugging from 'frame'.</td>
</tr><tr>
<td><a href="#DebugBase.step">step</a></td>
<td>Public method to perform a step operation in this thread.</td>
</tr><tr>
<td><a href="#DebugBase.stepOut">stepOut</a></td>
<td>Public method to perform a step out of the current call.</td>
</tr><tr>
<td><a href="#DebugBase.stop_here">stop_here</a></td>
<td>Public method reimplemented to filter out debugger files.</td>
</tr><tr>
<td><a href="#DebugBase.storeFrameLocals">storeFrameLocals</a></td>
<td>Public method to store the locals into the frame, so an access to frame.f_locals returns the last data.</td>
</tr><tr>
<td><a href="#DebugBase.tracePythonLibs">tracePythonLibs</a></td>
<td>Public method to update the settings to trace into Python libraries.</td>
</tr><tr>
<td><a href="#DebugBase.trace_dispatch">trace_dispatch</a></td>
<td>Public method reimplemented from bdb.py to do some special things.</td>
</tr><tr>
<td><a href="#DebugBase.user_exception">user_exception</a></td>
<td>Public method reimplemented to report an exception to the debug server.</td>
</tr><tr>
<td><a href="#DebugBase.user_line">user_line</a></td>
<td>Public method reimplemented to handle the program about to execute a particular line.</td>
</tr>
</table>
<h3>Static Methods</h3>
<table>
<tr><td>None</td></tr>
</table>
<a NAME="DebugBase.__init__" ID="DebugBase.__init__"></a>
<h4>DebugBase (Constructor)</h4>
<b>DebugBase</b>(<i>dbgClient</i>)
<p>
        Constructor
</p><dl>
<dt><i>dbgClient</i></dt>
<dd>
the owning client
</dd>
</dl><a NAME="DebugBase.__checkBreakInFrame" ID="DebugBase.__checkBreakInFrame"></a>
<h4>DebugBase.__checkBreakInFrame</h4>
<b>__checkBreakInFrame</b>(<i>frame</i>)
<p>
        Private method to check if the function / method has a line number
        which is a breakpoint.
</p><dl>
<dt><i>frame</i> (frame object)</dt>
<dd>
the frame object
</dd>
</dl><dl>
<dt>Returns:</dt>
<dd>
Flag indicating a function / method with breakpoint
</dd>
</dl><dl>
<dt>Return Type:</dt>
<dd>
bool
</dd>
</dl><a NAME="DebugBase.__do_clearBreak" ID="DebugBase.__do_clearBreak"></a>
<h4>DebugBase.__do_clearBreak</h4>
<b>__do_clearBreak</b>(<i>filename, lineno</i>)
<p>
        Private method called to clear a temporary breakpoint.
</p><dl>
<dt><i>filename</i> (str)</dt>
<dd>
name of the file the bp belongs to
</dd><dt><i>lineno</i> (int)</dt>
<dd>
linenumber of the bp
</dd>
</dl><a NAME="DebugBase.__do_clearWatch" ID="DebugBase.__do_clearWatch"></a>
<h4>DebugBase.__do_clearWatch</h4>
<b>__do_clearWatch</b>(<i>cond</i>)
<p>
        Private method called to clear a temporary watch expression.
</p><dl>
<dt><i>cond</i> (str)</dt>
<dd>
expression of the watch expression to be cleared
</dd>
</dl><a NAME="DebugBase.__eventPollTimer" ID="DebugBase.__eventPollTimer"></a>
<h4>DebugBase.__eventPollTimer</h4>
<b>__eventPollTimer</b>(<i></i>)
<p>
        Private method to set a flag every 0.5 s to check for new messages.
</p><a NAME="DebugBase.__extractExceptionName" ID="DebugBase.__extractExceptionName"></a>
<h4>DebugBase.__extractExceptionName</h4>
<b>__extractExceptionName</b>(<i>exctype</i>)
<p>
        Private method to extract the exception name given the exception
        type object.
</p><dl>
<dt><i>exctype</i></dt>
<dd>
type of the exception
</dd>
</dl><dl>
<dt>Returns:</dt>
<dd>
exception name (string)
</dd>
</dl><a NAME="DebugBase.__extract_stack" ID="DebugBase.__extract_stack"></a>
<h4>DebugBase.__extract_stack</h4>
<b>__extract_stack</b>(<i>exctb</i>)
<p>
        Private member to return a list of stack frames.
</p><dl>
<dt><i>exctb</i></dt>
<dd>
exception traceback
</dd>
</dl><dl>
<dt>Returns:</dt>
<dd>
list of stack frames
</dd>
</dl><a NAME="DebugBase.__sendCallTrace" ID="DebugBase.__sendCallTrace"></a>
<h4>DebugBase.__sendCallTrace</h4>
<b>__sendCallTrace</b>(<i>event, fromFrame, toFrame</i>)
<p>
        Private method to send a call/return trace.
</p><dl>
<dt><i>event</i> (str)</dt>
<dd>
trace event
</dd><dt><i>fromFrame</i> (frame object)</dt>
<dd>
originating frame
</dd><dt><i>toFrame</i> (frame object)</dt>
<dd>
destination frame
</dd>
</dl><a NAME="DebugBase.__skipFrame" ID="DebugBase.__skipFrame"></a>
<h4>DebugBase.__skipFrame</h4>
<b>__skipFrame</b>(<i>frame</i>)
<p>
        Private method to filter out debugger files.
</p><p>
        Tracing is turned off for files that are part of the
        debugger that are called from the application being debugged.
</p><dl>
<dt><i>frame</i> (frame object)</dt>
<dd>
the frame object
</dd>
</dl><dl>
<dt>Returns:</dt>
<dd>
flag indicating whether the debugger should skip this frame
</dd>
</dl><dl>
<dt>Return Type:</dt>
<dd>
bool
</dd>
</dl><a NAME="DebugBase._set_stopinfo" ID="DebugBase._set_stopinfo"></a>
<h4>DebugBase._set_stopinfo</h4>
<b>_set_stopinfo</b>(<i>stopframe, returnframe</i>)
<p>
        Protected method to update the frame pointers.
</p><dl>
<dt><i>stopframe</i> (frame object)</dt>
<dd>
the frame object where to stop
</dd><dt><i>returnframe</i> (frame object)</dt>
<dd>
the frame object where to stop on a function return
</dd>
</dl><a NAME="DebugBase.bootstrap" ID="DebugBase.bootstrap"></a>
<h4>DebugBase.bootstrap</h4>
<b>bootstrap</b>(<i>target, args, kwargs</i>)
<p>
        Public method to bootstrap a thread.
</p><p>
        It wraps the call to the user function to enable tracing
        before hand.
</p><dl>
<dt><i>target</i> (function pointer)</dt>
<dd>
function which is called in the new created thread
</dd><dt><i>args</i> (tuple)</dt>
<dd>
arguments to pass to target
</dd><dt><i>kwargs</i> (dict)</dt>
<dd>
keyword arguments to pass to target
</dd>
</dl><a NAME="DebugBase.break_here" ID="DebugBase.break_here"></a>
<h4>DebugBase.break_here</h4>
<b>break_here</b>(<i>frame</i>)
<p>
        Public method reimplemented from bdb.py to fix the filename from the
        frame.
</p><p>
        See fix_frame_filename for more info.
</p><dl>
<dt><i>frame</i> (frame object)</dt>
<dd>
the frame object
</dd>
</dl><dl>
<dt>Returns:</dt>
<dd>
flag indicating the break status
</dd>
</dl><dl>
<dt>Return Type:</dt>
<dd>
bool
</dd>
</dl><a NAME="DebugBase.fix_frame_filename" ID="DebugBase.fix_frame_filename"></a>
<h4>DebugBase.fix_frame_filename</h4>
<b>fix_frame_filename</b>(<i>frame</i>)
<p>
        Public method used to fixup the filename for a given frame.
</p><p>
        The logic employed here is that if a module was loaded
        from a .pyc file, then the correct .py to operate with
        should be in the same path as the .pyc. The reason this
        logic is needed is that when a .pyc file is generated, the
        filename embedded and thus what is readable in the code object
        of the frame object is the fully qualified filepath when the
        pyc is generated. If files are moved from machine to machine
        this can break debugging as the .pyc will refer to the .py
        on the original machine. Another case might be sharing
        code over a network... This logic deals with that.
</p><dl>
<dt><i>frame</i> (frame object)</dt>
<dd>
the frame object
</dd>
</dl><dl>
<dt>Returns:</dt>
<dd>
fixed up file name
</dd>
</dl><dl>
<dt>Return Type:</dt>
<dd>
str
</dd>
</dl><a NAME="DebugBase.getCurrentFrame" ID="DebugBase.getCurrentFrame"></a>
<h4>DebugBase.getCurrentFrame</h4>
<b>getCurrentFrame</b>(<i></i>)
<p>
        Public method to return the current frame.
</p><dl>
<dt>Returns:</dt>
<dd>
the current frame
</dd>
</dl><dl>
<dt>Return Type:</dt>
<dd>
frame object
</dd>
</dl><a NAME="DebugBase.getFrameLocals" ID="DebugBase.getFrameLocals"></a>
<h4>DebugBase.getFrameLocals</h4>
<b>getFrameLocals</b>(<i>frmnr=0</i>)
<p>
        Public method to return the locals dictionary of the current frame
        or a frame below.
</p><dl>
<dt><i>frmnr=</i></dt>
<dd>
distance of frame to get locals dictionary of. 0 is
            the current frame (int)
</dd>
</dl><dl>
<dt>Returns:</dt>
<dd>
locals dictionary of the frame
</dd>
</dl><a NAME="DebugBase.getStack" ID="DebugBase.getStack"></a>
<h4>DebugBase.getStack</h4>
<b>getStack</b>(<i>frame=None, applyTrace=False</i>)
<p>
        Public method to get the stack.
</p><dl>
<dt><i>frame=</i> (frame object or list)</dt>
<dd>
frame object to inspect
</dd><dt><i>applyTrace=</i> (bool)</dt>
<dd>
flag to assign trace function to fr.f_trace
</dd>
</dl><dl>
<dt>Returns:</dt>
<dd>
list of lists with file name (string), line number (integer)
            and function name (string)
</dd>
</dl><a NAME="DebugBase.go" ID="DebugBase.go"></a>
<h4>DebugBase.go</h4>
<b>go</b>(<i>special</i>)
<p>
        Public method to resume the thread.
</p><p>
        It resumes the thread stopping only at breakpoints or exceptions.
</p><dl>
<dt><i>special</i></dt>
<dd>
flag indicating a special continue operation
</dd>
</dl><a NAME="DebugBase.profile" ID="DebugBase.profile"></a>
<h4>DebugBase.profile</h4>
<b>profile</b>(<i>frame, event, arg</i>)
<p>
        Public method used to trace some stuff independent of the debugger
        trace function.
</p><dl>
<dt><i>frame</i> (frame object)</dt>
<dd>
current stack frame
</dd><dt><i>event</i> (str)</dt>
<dd>
trace event
</dd><dt><i>arg</i> (depends on the previous event parameter)</dt>
<dd>
arguments
</dd>
</dl><a NAME="DebugBase.profileWithRecursion" ID="DebugBase.profileWithRecursion"></a>
<h4>DebugBase.profileWithRecursion</h4>
<b>profileWithRecursion</b>(<i>frame, event, arg</i>)
<p>
        Public method used to trace some stuff independent of the debugger
        trace function.
</p><dl>
<dt><i>frame</i> (frame object)</dt>
<dd>
current stack frame
</dd><dt><i>event</i> (str)</dt>
<dd>
trace event
</dd><dt><i>arg</i> (depends on the previous event parameter)</dt>
<dd>
arguments
</dd>
</dl><dl>
<dt>Raises <b>RuntimeError</b>:</dt>
<dd>
raised to indicate too many recursions
</dd>
</dl><a NAME="DebugBase.run" ID="DebugBase.run"></a>
<h4>DebugBase.run</h4>
<b>run</b>(<i>cmd, globals=None, locals=None</i>)
<p>
        Public method to start a given command under debugger control.
</p><dl>
<dt><i>cmd</i> (str or CodeType)</dt>
<dd>
command / code to execute under debugger control
</dd><dt><i>globals=</i> (dict)</dt>
<dd>
dictionary of global variables for cmd
</dd><dt><i>locals=</i> (dict)</dt>
<dd>
dictionary of local variables for cmd
</dd>
</dl><a NAME="DebugBase.setRecursionDepth" ID="DebugBase.setRecursionDepth"></a>
<h4>DebugBase.setRecursionDepth</h4>
<b>setRecursionDepth</b>(<i>frame</i>)
<p>
        Public method to determine the current recursion depth.
</p><dl>
<dt><i>frame</i></dt>
<dd>
The current stack frame.
</dd>
</dl><a NAME="DebugBase.set_continue" ID="DebugBase.set_continue"></a>
<h4>DebugBase.set_continue</h4>
<b>set_continue</b>(<i>special</i>)
<p>
        Public method to stop only on next breakpoint.
</p><dl>
<dt><i>special</i> (bool)</dt>
<dd>
flag indicating a special continue operation
</dd>
</dl><a NAME="DebugBase.set_next" ID="DebugBase.set_next"></a>
<h4>DebugBase.set_next</h4>
<b>set_next</b>(<i>frame</i>)
<p>
        Public method to stop on the next line in or below the given frame.
</p><dl>
<dt><i>frame</i> (frame object)</dt>
<dd>
the frame object
</dd>
</dl><a NAME="DebugBase.set_quit" ID="DebugBase.set_quit"></a>
<h4>DebugBase.set_quit</h4>
<b>set_quit</b>(<i></i>)
<p>
        Public method to quit.
</p><p>
        Disables the trace functions and resets all frame pointer.
</p><a NAME="DebugBase.set_return" ID="DebugBase.set_return"></a>
<h4>DebugBase.set_return</h4>
<b>set_return</b>(<i>frame</i>)
<p>
        Public method to stop when returning from the given frame.
</p><dl>
<dt><i>frame</i> (frame object)</dt>
<dd>
the frame object
</dd>
</dl><a NAME="DebugBase.set_step" ID="DebugBase.set_step"></a>
<h4>DebugBase.set_step</h4>
<b>set_step</b>(<i></i>)
<p>
        Public method to stop after one line of code.
</p><a NAME="DebugBase.set_trace" ID="DebugBase.set_trace"></a>
<h4>DebugBase.set_trace</h4>
<b>set_trace</b>(<i>frame=None</i>)
<p>
        Public method to start debugging from 'frame'.
</p><p>
        If frame is not specified, debugging starts from caller's frame.
        Because of jump optimizations it's not possible to use sys.breakpoint()
        as last instruction in a function or method.
</p><dl>
<dt><i>frame=</i> (frame object)</dt>
<dd>
frame to start debugging from
</dd>
</dl><a NAME="DebugBase.step" ID="DebugBase.step"></a>
<h4>DebugBase.step</h4>
<b>step</b>(<i>traceMode</i>)
<p>
        Public method to perform a step operation in this thread.
</p><dl>
<dt><i>traceMode</i></dt>
<dd>
If it is True, then the step is a step into,
              otherwise it is a step over.
</dd>
</dl><a NAME="DebugBase.stepOut" ID="DebugBase.stepOut"></a>
<h4>DebugBase.stepOut</h4>
<b>stepOut</b>(<i></i>)
<p>
        Public method to perform a step out of the current call.
</p><a NAME="DebugBase.stop_here" ID="DebugBase.stop_here"></a>
<h4>DebugBase.stop_here</h4>
<b>stop_here</b>(<i>frame</i>)
<p>
        Public method reimplemented to filter out debugger files.
</p><p>
        Tracing is turned off for files that are part of the
        debugger that are called from the application being debugged.
</p><dl>
<dt><i>frame</i> (frame object)</dt>
<dd>
the frame object
</dd>
</dl><dl>
<dt>Returns:</dt>
<dd>
flag indicating whether the debugger should stop here
</dd>
</dl><dl>
<dt>Return Type:</dt>
<dd>
bool
</dd>
</dl><a NAME="DebugBase.storeFrameLocals" ID="DebugBase.storeFrameLocals"></a>
<h4>DebugBase.storeFrameLocals</h4>
<b>storeFrameLocals</b>(<i>frmnr=0</i>)
<p>
        Public method to store the locals into the frame, so an access to
        frame.f_locals returns the last data.
</p><dl>
<dt><i>frmnr=</i></dt>
<dd>
distance of frame to store locals dictionary to. 0 is
            the current frame (int)
</dd>
</dl><a NAME="DebugBase.tracePythonLibs" ID="DebugBase.tracePythonLibs"></a>
<h4>DebugBase.tracePythonLibs</h4>
<b>tracePythonLibs</b>(<i>enable</i>)
<p>
        Public method to update the settings to trace into Python libraries.
</p><dl>
<dt><i>enable</i> (bool)</dt>
<dd>
flag to debug into Python libraries
</dd>
</dl><a NAME="DebugBase.trace_dispatch" ID="DebugBase.trace_dispatch"></a>
<h4>DebugBase.trace_dispatch</h4>
<b>trace_dispatch</b>(<i>frame, event, arg</i>)
<p>
        Public method reimplemented from bdb.py to do some special things.
</p><p>
        This specialty is to check the connection to the debug server
        for new events (i.e. new breakpoints) while we are going through
        the code.
</p><dl>
<dt><i>frame</i> (frame object)</dt>
<dd>
The current stack frame
</dd><dt><i>event</i> (str)</dt>
<dd>
The trace event
</dd><dt><i>arg</i> (depends on the previous event parameter)</dt>
<dd>
The arguments
</dd>
</dl><dl>
<dt>Returns:</dt>
<dd>
local trace function
</dd>
</dl><dl>
<dt>Return Type:</dt>
<dd>
trace function or None
</dd>
</dl><dl>
<dt>Raises <b>SystemExit</b>:</dt>
<dd>

</dd>
</dl><a NAME="DebugBase.user_exception" ID="DebugBase.user_exception"></a>
<h4>DebugBase.user_exception</h4>
<b>user_exception</b>(<i>frame, excinfo, unhandled=False</i>)
<p>
        Public method reimplemented to report an exception to the debug server.
</p><dl>
<dt><i>frame</i> (frame object)</dt>
<dd>
the frame object
</dd><dt><i>excinfo</i> (tuple(Exception, excval object, traceback frame object))</dt>
<dd>
details about the exception
</dd><dt><i>unhandled=</i> (bool)</dt>
<dd>
flag indicating an uncaught exception
</dd>
</dl><a NAME="DebugBase.user_line" ID="DebugBase.user_line"></a>
<h4>DebugBase.user_line</h4>
<b>user_line</b>(<i>frame</i>)
<p>
        Public method reimplemented to handle the program about to execute a
        particular line.
</p><dl>
<dt><i>frame</i></dt>
<dd>
the frame object
</dd>
</dl>
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<a NAME="printerr" ID="printerr"></a>
<h2>printerr</h2>
<b>printerr</b>(<i>s</i>)
<p>
    Module function used for debugging the debug client.
</p><dl>
<dt><i>s</i></dt>
<dd>
data to be printed
</dd>
</dl>
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<a NAME="setRecursionLimit" ID="setRecursionLimit"></a>
<h2>setRecursionLimit</h2>
<b>setRecursionLimit</b>(<i>limit</i>)
<p>
    Module function to set the recursion limit.
</p><dl>
<dt><i>limit</i></dt>
<dd>
recursion limit (integer)
</dd>
</dl>
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