Index: mozilla/extensions/venkman/resources/content/venkman-debugger.js
===================================================================
RCS file: /cvsroot/mozilla/extensions/venkman/resources/content/venkman-debugger.js,v
retrieving revision 1.60
diff -p -u -6 -r1.60 venkman-debugger.js
--- mozilla/extensions/venkman/resources/content/venkman-debugger.js	24 May 2006 21:26:04 -0000	1.60
+++ mozilla/extensions/venkman/resources/content/venkman-debugger.js	17 Aug 2006 09:49:26 -0000
@@ -137,16 +137,18 @@ function initDebugger()
     console.callHook      = { onCall: jsdCallHook };
 
     console.jsdConsole = console.jsds.wrapValue(console);
 
     dispatch ("tmode", {mode: console.prefs["lastThrowMode"]});
     dispatch ("emode", {mode: console.prefs["lastErrorMode"]});
-    
+
+    console.enumeratingScripts = true;
     var enumer = { enumerateScript: console.scriptHook.onScriptCreated };
     console.jsds.scriptHook = console.scriptHook;
     console.jsds.enumerateScripts(enumer);
+    delete console.enumeratingScripts;
 
     console.jsds.breakpointHook = console.executionHook;
     console.jsds.debuggerHook   = console.executionHook;
     console.jsds.debugHook      = console.executionHook;
     console.jsds.errorHook      = console.errorHook;
 
@@ -1148,16 +1150,19 @@ function sw_clearbp (pc)
 
 ScriptWrapper.prototype.addToLineMap =
 function sw_addmap (lineMap)
 {    
     var jsdScript = this.jsdScript;
     var end = jsdScript.baseLineNumber + jsdScript.lineExtent;
-    for (var i = jsdScript.baseLineNumber; i < end; ++i)
+    if (!("enumeratingScripts" in console))
     {
-        if (jsdScript.isLineExecutable(i, PCMAP_SOURCETEXT))
-            arrayOrFlag (lineMap, i - 1, LINE_BREAKABLE);
+        for (var i = jsdScript.baseLineNumber; i < end; ++i)
+        {
+            if (jsdScript.isLineExecutable(i, PCMAP_SOURCETEXT))
+                arrayOrFlag (lineMap, i - 1, LINE_BREAKABLE);
+        }
     }
 
     for (i in this.breaks)
     {
         var line = jsdScript.pcToLine(this.breaks[i].pc, PCMAP_SOURCETEXT);
         arrayOrFlag (lineMap, line - 1, LINE_BREAK);