merge core-8-branch

23 files changed, 505 insertions, 273 deletions

diff --git a/generic/tclBasic.c b/generic/tclBasic.c
index 4db275d..ae7d7ff 100644
--- a/generic/tclBasic.c
+++ b/generic/tclBasic.c
@@ -173,6 +173,7 @@ static Tcl_NRPostProc	Dispatch;
 
 static Tcl_ObjCmdProc NRCoroInjectObjCmd;
 static Tcl_NRPostProc NRPostInvoke;
+static Tcl_ObjCmdProc CoroTypeObjCmd;
 
 MODULE_SCOPE const TclStubs tclStubs;
 
@@ -974,8 +975,11 @@ Tcl_CreateInterp(void)
             TclNRAssembleObjCmd, NULL, NULL);
     cmdPtr->compileProc = &TclCompileAssembleCmd;
 
+    /* Coroutine monkeybusiness */
     Tcl_NRCreateCommand(interp, "::tcl::unsupported::inject", NULL,
 	    NRCoroInjectObjCmd, NULL, NULL);
+    Tcl_CreateObjCommand(interp, "::tcl::unsupported::corotype",
+            CoroTypeObjCmd, NULL, NULL);
 
     /* Export unsupported commands */
     nsPtr = Tcl_FindNamespace(interp, "::tcl::unsupported", NULL, 0);
@@ -2378,14 +2382,16 @@ Tcl_CreateCommand(
 	    break;
 	}
 
-	/* An existing command conflicts. Try to delete it.. */
+	/*
+         * An existing command conflicts. Try to delete it...
+         */
+
 	cmdPtr = Tcl_GetHashValue(hPtr);
 
 	/*
-	 * Be careful to preserve
-	 * any existing import links so we can restore them down below. That
-	 * way, you can redefine a command and its import status will remain
-	 * intact.
+	 * Be careful to preserve any existing import links so we can restore
+	 * them down below. That way, you can redefine a command and its
+	 * import status will remain intact.
 	 */
 
 	cmdPtr->refCount++;
@@ -2405,16 +2411,15 @@ Tcl_CreateCommand(
 
     if (!isNew) {
 	/*
-	 * If the deletion callback recreated the command, just throw away
-	 * the new command (if we try to delete it again, we could get
-	 * stuck in an infinite loop).
+	 * If the deletion callback recreated the command, just throw away the
+	 * new command (if we try to delete it again, we could get stuck in an
+	 * infinite loop).
 	 */
 
 	ckfree(Tcl_GetHashValue(hPtr));
     }
 
     if (!deleted) {
-
 	/*
 	 * Command resolvers (per-interp, per-namespace) might have resolved
 	 * to a command for the given namespace scope with this command not
@@ -2597,17 +2602,17 @@ TclCreateObjCommandInNs(
 	}
 
 	/*
-         * An existing command conflicts. Try to delete it.
+         * An existing command conflicts. Try to delete it...
          */
 
 	cmdPtr = Tcl_GetHashValue(hPtr);
 
 	/*
-	 * [***] This is wrong. See Tcl Bug a16752c252. However, this buggy
-	 * behavior is kept under particular circumstances to accommodate
-	 * deployed binaries of the "tclcompiler" program
-	 *     http://sourceforge.net/projects/tclpro/
-         * that crash if the bug is fixed.
+	 * [***] This is wrong.  See Tcl Bug a16752c252.
+	 * However, this buggy behavior is kept under particular circumstances
+	 * to accommodate deployed binaries of the "tclcompiler" program
+	 * <http://sourceforge.net/projects/tclpro/> that crash if the bug is
+	 * fixed.
 	 */
 
 	if (cmdPtr->objProc == TclInvokeStringCommand
@@ -4607,15 +4612,22 @@ EvalObjvCore(
     reresolve:
     assert(cmdPtr == NULL);
     if (preCmdPtr) {
-	/* Caller gave it to us */
+	/*
+         * Caller gave it to us.
+         */
+
 	if (!(preCmdPtr->flags & CMD_IS_DELETED)) {
-	    /* So long as it exists, use it. */
+	    /*
+             * So long as it exists, use it.
+             */
+
 	    cmdPtr = preCmdPtr;
 	} else if (flags & TCL_EVAL_NORESOLVE) {
 	    /*
-	     * When it's been deleted, and we're told not to attempt
-	     * resolving it ourselves, all we can do is raise an error.
+	     * When it's been deleted, and we're told not to attempt resolving
+	     * it ourselves, all we can do is raise an error.
 	     */
+
 	    Tcl_SetObjResult(interp, Tcl_ObjPrintf(
 		    "attempt to invoke a deleted command"));
 	    Tcl_SetErrorCode(interp, "TCL", "EVAL", "DELETEDCOMMAND", NULL);
@@ -4631,14 +4643,12 @@ EvalObjvCore(
 
     if (enterTracesDone || iPtr->tracePtr
 	    || (cmdPtr->flags & CMD_HAS_EXEC_TRACES)) {
-
 	Tcl_Obj *commandPtr = TclGetSourceFromFrame(
 		flags & TCL_EVAL_SOURCE_IN_FRAME ?  iPtr->cmdFramePtr : NULL,
 		objc, objv);
-	Tcl_IncrRefCount(commandPtr);
 
+	Tcl_IncrRefCount(commandPtr);
 	if (!enterTracesDone) {
-
 	    int code = TEOV_RunEnterTraces(interp, &cmdPtr, commandPtr,
 		    objc, objv);
 
@@ -4646,10 +4656,10 @@ EvalObjvCore(
 	     * Send any exception from enter traces back as an exception
 	     * raised by the traced command.
 	     * TODO: Is this a bug?  Letting an execution trace BREAK or
-	     * CONTINUE or RETURN in the place of the traced command?
-	     * Would either converting all exceptions to TCL_ERROR, or
-	     * just swallowing them be better?  (Swallowing them has the
-	     * problem of permanently hiding program errors.)
+	     * CONTINUE or RETURN in the place of the traced command?  Would
+	     * either converting all exceptions to TCL_ERROR, or just
+	     * swallowing them be better?  (Swallowing them has the problem of
+	     * permanently hiding program errors.)
 	     */
 
 	    if (code != TCL_OK) {
@@ -4658,9 +4668,8 @@ EvalObjvCore(
 	    }
 
 	    /*
-	     * If the enter traces made the resolved cmdPtr unusable, go
-	     * back and resolve again, but next time don't run enter
-	     * traces again.
+	     * If the enter traces made the resolved cmdPtr unusable, go back
+	     * and resolve again, but next time don't run enter traces again.
 	     */
 
 	    if (cmdPtr == NULL) {
@@ -4671,9 +4680,9 @@ EvalObjvCore(
 	}
 
 	/*
-	 * Schedule leave traces.  Raise the refCount on the resolved
-	 * cmdPtr, so that when it passes to the leave traces we know
-	 * it's still valid.
+	 * Schedule leave traces.  Raise the refCount on the resolved cmdPtr,
+	 * so that when it passes to the leave traces we know it's still
+	 * valid.
 	 */
 
 	cmdPtr->refCount++;
@@ -4743,8 +4752,6 @@ TclNRRunCallbacks(
 #if !defined(TCL_NO_DEPRECATED) && TCL_MAJOR_VERSION < 9
     Interp *iPtr = (Interp *) interp;
 #endif /* !defined(TCL_NO_DEPRECATED) */
-    NRE_callback *callbackPtr;
-    Tcl_NRPostProc *procPtr;
 
     /*
      * If the interpreter has a non-empty string result, the result object is
@@ -4762,11 +4769,14 @@ TclNRRunCallbacks(
     }
 #endif /* !defined(TCL_NO_DEPRECATED) */
 
-    /* This is the trampoline. */
+    /*
+     * This is the trampoline.
+     */
 
     while (TOP_CB(interp) != rootPtr) {
-	callbackPtr = TOP_CB(interp);
-	procPtr = callbackPtr->procPtr;
+        NRE_callback *callbackPtr = TOP_CB(interp);
+        Tcl_NRPostProc *procPtr = callbackPtr->procPtr;
+
 	TOP_CB(interp) = callbackPtr->nextPtr;
 	result = procPtr(callbackPtr->data, interp, result);
 	TCLNR_FREE(interp, callbackPtr);
@@ -6974,14 +6984,17 @@ TclNRInvoke(
     }
     cmdPtr = Tcl_GetHashValue(hPtr);
 
-    /* Avoid the exception-handling brain damage when numLevels == 0 . */
+    /*
+     * Avoid the exception-handling brain damage when numLevels == 0
+     */
+
     iPtr->numLevels++;
     Tcl_NRAddCallback(interp, NRPostInvoke, NULL, NULL, NULL, NULL);
 
     /*
      * Normal command resolution of objv[0] isn't going to find cmdPtr.
-     * That's the whole point of **hidden** commands.  So tell the
-     * Eval core machinery not to even try (and risk finding something wrong).
+     * That's the whole point of **hidden** commands.  So tell the Eval core
+     * machinery not to even try (and risk finding something wrong).
      */
 
     return TclNREvalObjv(interp, objc, objv, TCL_EVAL_NORESOLVE, cmdPtr);
@@ -8375,13 +8388,21 @@ TclDTraceInfo(
 	Tcl_DictObjGet(NULL, info, *k++, &val);
 	args[i] = val ? TclGetString(val) : NULL;
     }
-    /* no "proc" -> use "lambda" */
+
+    /*
+     * no "proc" -> use "lambda"
+     */
+
     if (!args[2]) {
 	Tcl_DictObjGet(NULL, info, *k, &val);
 	args[2] = val ? TclGetString(val) : NULL;
     }
     k++;
-    /* no "class" -> use "object" */
+
+    /*
+     * no "class" -> use "object"
+     */
+
     if (!args[5]) {
 	Tcl_DictObjGet(NULL, info, *k, &val);
 	args[5] = val ? TclGetString(val) : NULL;
@@ -8735,8 +8756,10 @@ TclNRTailcallObjCmd(
         Tcl_Obj *listPtr, *nsObjPtr;
         Tcl_Namespace *nsPtr = (Tcl_Namespace *) iPtr->varFramePtr->nsPtr;
 
-        /* The tailcall data is in a Tcl list: the first element is the
-         * namespace, the rest the command to be tailcalled. */
+        /*
+         * The tailcall data is in a Tcl list: the first element is the
+         * namespace, the rest the command to be tailcalled.
+         */
 
         nsObjPtr = Tcl_NewStringObj(nsPtr->fullName, -1);
         listPtr = Tcl_NewListObj(objc, objv);
@@ -9187,6 +9210,75 @@ TclNREvalList(
 /*
  *----------------------------------------------------------------------
  *
+ * CoroTypeObjCmd --
+ *
+ *      Implementation of [::tcl::unsupported::corotype] command.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+CoroTypeObjCmd(
+    ClientData clientData,
+    Tcl_Interp *interp,
+    int objc,
+    Tcl_Obj *const objv[])
+{
+    Command *cmdPtr;
+    CoroutineData *corPtr;
+
+    if (objc != 2) {
+	Tcl_WrongNumArgs(interp, 1, objv, "coroName");
+	return TCL_ERROR;
+    }
+
+    /*
+     * Look up the coroutine.
+     */
+
+    cmdPtr = (Command *) Tcl_GetCommandFromObj(interp, objv[1]);
+    if ((!cmdPtr) || (cmdPtr->nreProc != TclNRInterpCoroutine)) {
+        Tcl_SetObjResult(interp, Tcl_NewStringObj(
+                "can only get coroutine type of a coroutine", -1));
+        Tcl_SetErrorCode(interp, "TCL", "LOOKUP", "COROUTINE",
+                TclGetString(objv[1]), NULL);
+        return TCL_ERROR;
+    }
+
+    /*
+     * An active coroutine is "active". Can't tell what it might do in the
+     * future.
+     */
+
+    corPtr = cmdPtr->objClientData;
+    if (!COR_IS_SUSPENDED(corPtr)) {
+        Tcl_SetObjResult(interp, Tcl_NewStringObj("active", -1));
+        return TCL_OK;
+    }
+
+    /*
+     * Inactive coroutines are classified by the (effective) command used to
+     * suspend them, which matters when you're injecting a probe.
+     */
+
+    switch (corPtr->nargs) {
+    case COROUTINE_ARGUMENTS_SINGLE_OPTIONAL:
+        Tcl_SetObjResult(interp, Tcl_NewStringObj("yield", -1));
+        return TCL_OK;
+    case COROUTINE_ARGUMENTS_ARBITRARY:
+        Tcl_SetObjResult(interp, Tcl_NewStringObj("yieldto", -1));
+        return TCL_OK;
+    default:
+        Tcl_SetObjResult(interp, Tcl_NewStringObj(
+                "unknown coroutine type", -1));
+        Tcl_SetErrorCode(interp, "TCL", "COROUTINE", "BAD_TYPE", NULL);
+        return TCL_ERROR;
+    }
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
  * NRCoroInjectObjCmd --
  *
  *      Implementation of [::tcl::unsupported::inject] command.
@@ -9417,9 +9509,12 @@ TclNRCoroutineObjCmd(
     TclNRAddCallback(interp, NRCoroutineExitCallback, corPtr,
 	    NULL, NULL, NULL);
 
-    /* ensure that the command is looked up in the correct namespace */
+    /*
+     * Ensure that the command is looked up in the correct namespace.
+     */
+
     iPtr->lookupNsPtr = lookupNsPtr;
-    Tcl_NREvalObj(interp, Tcl_NewListObj(objc-2, objv+2), 0);
+    Tcl_NREvalObj(interp, Tcl_NewListObj(objc - 2, objv + 2), 0);
     iPtr->numLevels--;
 
     SAVE_CONTEXT(corPtr->running);
diff --git a/generic/tclBinary.c b/generic/tclBinary.c
index 1f78d18..246c371 100644
--- a/generic/tclBinary.c
+++ b/generic/tclBinary.c
@@ -771,7 +771,10 @@ TclAppendBytesToByteArray(
 		"TclAppendBytesToByteArray");
     }
     if (len == 0) {
-	/* Append zero bytes is a no-op. */
+	/*
+	 * Append zero bytes is a no-op.
+	 */
+
 	return;
     }
 
diff --git a/generic/tclCmdIL.c b/generic/tclCmdIL.c
index ef7a42c..c11534e 100644
--- a/generic/tclCmdIL.c
+++ b/generic/tclCmdIL.c
@@ -56,7 +56,7 @@ typedef int (*SortMemCmpFn_t) (const void *, const void *, size_t);
  * The following structure is used to pass this information.
  */
 
-typedef struct SortInfo {
+typedef struct {
     int isIncreasing;		/* Nonzero means sort in increasing order. */
     int sortMode;		/* The sort mode. One of SORTMODE_* values
 				 * defined below. */
@@ -566,7 +566,7 @@ InfoBodyCmd(
      * the object do not invalidate the internal rep.
      */
 
-    bytes = Tcl_GetStringFromObj(procPtr->bodyPtr, &numBytes);
+    bytes = TclGetStringFromObj(procPtr->bodyPtr, &numBytes);
     Tcl_SetObjResult(interp, Tcl_NewStringObj(bytes, numBytes));
     return TCL_OK;
 }
@@ -1047,7 +1047,7 @@ InfoErrorStackCmd(
 
     target = interp;
     if (objc == 2) {
-	target = Tcl_GetSlave(interp, Tcl_GetString(objv[1]));
+	target = Tcl_GetSlave(interp, TclGetString(objv[1]));
 	if (target == NULL) {
 	    return TCL_ERROR;
 	}
@@ -2155,7 +2155,7 @@ InfoCmdTypeCmd(
 	Tcl_WrongNumArgs(interp, 1, objv, "commandName");
 	return TCL_ERROR;
     }
-    command = Tcl_FindCommand(interp, Tcl_GetString(objv[1]), NULL,
+    command = Tcl_FindCommand(interp, TclGetString(objv[1]), NULL,
 	    TCL_LEAVE_ERR_MSG);
     if (command == NULL) {
 	return TCL_ERROR;
@@ -2231,7 +2231,7 @@ Tcl_JoinObjCmd(
     joinObjPtr = (objc == 2) ? Tcl_NewStringObj(" ", 1) : objv[2];
     Tcl_IncrRefCount(joinObjPtr);
 
-    (void) Tcl_GetStringFromObj(joinObjPtr, &length);
+    (void) TclGetStringFromObj(joinObjPtr, &length);
     if (length == 0) {
 	resObjPtr = TclStringCat(interp, listLen, elemPtrs, 0);
     } else {
@@ -2721,15 +2721,13 @@ Tcl_LrangeObjCmd(
  *----------------------------------------------------------------------
  */
 
-typedef int list_index_t;
-
 static int
 LremoveIndexCompare(
     const void *el1Ptr,
     const void *el2Ptr)
 {
-    list_index_t idx1 = *((const list_index_t *) el1Ptr);
-    list_index_t idx2 = *((const list_index_t *) el2Ptr);
+    int idx1 = *((const int *) el1Ptr);
+    int idx2 = *((const int *) el2Ptr);
 
     /*
      * This will put the larger element first.
@@ -2746,7 +2744,7 @@ Tcl_LremoveObjCmd(
     Tcl_Obj *const objv[])	/* Argument objects. */
 {
     int i, idxc;
-    list_index_t listLen, *idxv, prevIdx, first, num;
+    int listLen, *idxv, prevIdx, first, num;
     Tcl_Obj *listObj;
 
     /*
@@ -2768,7 +2766,7 @@ Tcl_LremoveObjCmd(
 	Tcl_SetObjResult(interp, listObj);
 	return TCL_OK;
     }
-    idxv = ckalloc((objc - 2) * sizeof(list_index_t));
+    idxv = ckalloc((objc - 2) * sizeof(int));
     for (i = 2; i < objc; i++) {
 	if (TclGetIntForIndexM(interp, objv[i], /*endValue*/ listLen - 1,
 		&idxv[i - 2]) != TCL_OK) {
@@ -2783,7 +2781,7 @@ Tcl_LremoveObjCmd(
      */
 
     if (idxc > 1) {
-	qsort(idxv, idxc, sizeof(list_index_t), LremoveIndexCompare);
+	qsort(idxv, idxc, sizeof(int), LremoveIndexCompare);
     }
 
     /*
@@ -2796,7 +2794,7 @@ Tcl_LremoveObjCmd(
     num = 0;
     first = listLen;
     for (i = 0, prevIdx = -1 ; i < idxc ; i++) {
-	list_index_t idx = idxv[i];
+	int idx = idxv[i];
 
 	/*
 	 * Repeated index and sanity check.
@@ -3003,7 +3001,7 @@ Tcl_LreplaceObjCmd(
 	return result;
     }
 
-    if (first < 0) {
+    if (first == TCL_INDEX_NONE) {
 	first = 0;
     }
     if (first > listLen) {
@@ -3382,10 +3380,10 @@ Tcl_LsearchObjCmd(
 			TCL_INDEX_NONE, &encoded) != TCL_OK) {
 		    result = TCL_ERROR;
 		}
-		if (encoded == TCL_INDEX_NONE) {
+		if (encoded == (int)TCL_INDEX_NONE) {
 		    Tcl_SetObjResult(interp, Tcl_ObjPrintf(
 			    "index \"%s\" cannot select an element "
-			    "from any list", Tcl_GetString(indices[j])));
+			    "from any list", TclGetString(indices[j])));
 		    Tcl_SetErrorCode(interp, "TCL", "VALUE", "INDEX"
 			    "OUTOFRANGE", NULL);
 		    result = TCL_ERROR;
@@ -3515,8 +3513,8 @@ Tcl_LsearchObjCmd(
 	if (result != TCL_OK) {
 	    goto done;
 	}
-	if (start < 0) {
-	    start = 0;
+	if (start == TCL_INDEX_NONE) {
+	    start = TCL_INDEX_START;
 	}
 
 	/*
@@ -4099,10 +4097,10 @@ Tcl_LsortObjCmd(
 		int result = TclIndexEncode(interp, indexv[j],
 			TCL_INDEX_NONE, TCL_INDEX_NONE, &encoded);
 
-		if ((result == TCL_OK) && (encoded == TCL_INDEX_NONE)) {
+		if ((result == TCL_OK) && (encoded == (int)TCL_INDEX_NONE)) {
 		    Tcl_SetObjResult(interp, Tcl_ObjPrintf(
 			    "index \"%s\" cannot select an element "
-			    "from any list", Tcl_GetString(indexv[j])));
+			    "from any list", TclGetString(indexv[j])));
 		    Tcl_SetErrorCode(interp, "TCL", "VALUE", "INDEX"
 			    "OUTOFRANGE", NULL);
 		    result = TCL_ERROR;
@@ -4859,7 +4857,7 @@ SelectObjFromSublist(
 	    return NULL;
 	}
 	if (currentObj == NULL) {
-	    if (index == TCL_INDEX_NONE) {
+	    if (index == (int)TCL_INDEX_NONE) {
 		index = TCL_INDEX_END - infoPtr->indexv[i];
 		Tcl_SetObjResult(infoPtr->interp, Tcl_ObjPrintf(
 			"element end-%d missing from sublist \"%s\"",
diff --git a/generic/tclCompCmdsGR.c b/generic/tclCompCmdsGR.c
index 441611e..a8a85f8 100644
--- a/generic/tclCompCmdsGR.c
+++ b/generic/tclCompCmdsGR.c
@@ -433,7 +433,7 @@ TclCompileIfCmd(
 		jumpFalseDist += 3;
 		TclStoreInt4AtPtr(jumpFalseDist, (ifFalsePc + 1));
 	    } else {
-		Tcl_Panic("TclCompileIfCmd: unexpected opcode \"%d\" updating ifFalse jump", (int) opCode);
+		Tcl_Panic("TclCompileIfCmd: unexpected opcode \"%d\" updating ifFalse jump", opCode);
 	    }
 	}
     }
@@ -606,7 +606,7 @@ TclCompileInfoCommandsCmd(
     if (!TclWordKnownAtCompileTime(tokenPtr, objPtr)) {
 	goto notCompilable;
     }
-    bytes = Tcl_GetString(objPtr);
+    bytes = TclGetString(objPtr);
 
     /*
      * We require that the argument start with "::" and not have any of "*\[?"
@@ -1038,7 +1038,7 @@ TclCompileLassignCmd(
      */
 
     TclEmitInstInt4(		INST_LIST_RANGE_IMM, idx,	envPtr);
-    TclEmitInt4(			TCL_INDEX_END,		envPtr);
+    TclEmitInt4(			(int)TCL_INDEX_END,		envPtr);
 
     return TCL_OK;
 }
@@ -1243,7 +1243,7 @@ TclCompileListCmd(
 
     if (concat && numWords == 2) {
 	TclEmitInstInt4(	INST_LIST_RANGE_IMM, 0,	envPtr);
-	TclEmitInt4(			TCL_INDEX_END,	envPtr);
+	TclEmitInt4(			(int)TCL_INDEX_END,	envPtr);
     }
     return TCL_OK;
 }
@@ -1319,7 +1319,7 @@ TclCompileLrangeCmd(
 
     tokenPtr = TokenAfter(listTokenPtr);
     if ((TclGetIndexFromToken(tokenPtr, TCL_INDEX_START, TCL_INDEX_NONE,
-	    &idx1) != TCL_OK) || (idx1 == TCL_INDEX_NONE)) {
+	    &idx1) != TCL_OK) || (idx1 == (int)TCL_INDEX_NONE)) {
 	return TCL_ERROR;
     }
     /*
@@ -1408,7 +1408,7 @@ TclCompileLinsertCmd(
     CompileWord(envPtr, listTokenPtr, interp, 1);
     if (parsePtr->numWords == 3) {
 	TclEmitInstInt4(	INST_LIST_RANGE_IMM, 0,		envPtr);
-	TclEmitInt4(			TCL_INDEX_END,		envPtr);
+	TclEmitInt4(			(int)TCL_INDEX_END,		envPtr);
 	return TCL_OK;
     }
 
@@ -1418,10 +1418,10 @@ TclCompileLinsertCmd(
     }
     TclEmitInstInt4(		INST_LIST, i - 3,		envPtr);
 
-    if (idx == TCL_INDEX_START) {
+    if (idx == (int)TCL_INDEX_START) {
 	TclEmitInstInt4(	INST_REVERSE, 2,		envPtr);
 	TclEmitOpcode(		INST_LIST_CONCAT,		envPtr);
-    } else if (idx == TCL_INDEX_END) {
+    } else if (idx == (int)TCL_INDEX_END) {
 	TclEmitOpcode(		INST_LIST_CONCAT,		envPtr);
     } else {
 	/*
@@ -1436,7 +1436,7 @@ TclCompileLinsertCmd(
 	 * differ in their interpretation of the "end" index.
 	 */
 
-	if (idx < TCL_INDEX_END) {
+	if (idx < (int)TCL_INDEX_END) {
 	    idx++;
 	}
 	TclEmitInstInt4(	INST_OVER, 1,			envPtr);
@@ -1444,7 +1444,7 @@ TclCompileLinsertCmd(
 	TclEmitInt4(			idx - 1,		envPtr);
 	TclEmitInstInt4(	INST_REVERSE, 3,		envPtr);
 	TclEmitInstInt4(	INST_LIST_RANGE_IMM, idx,	envPtr);
-	TclEmitInt4(			TCL_INDEX_END,		envPtr);
+	TclEmitInt4(			(int)TCL_INDEX_END,		envPtr);
 	TclEmitOpcode(		INST_LIST_CONCAT,		envPtr);
 	TclEmitOpcode(		INST_LIST_CONCAT,		envPtr);
     }
@@ -1505,14 +1505,14 @@ TclCompileLreplaceCmd(
      * we must defer to direct evaluation.
      */
 
-    if (idx1 == TCL_INDEX_NONE) {
-	suffixStart = TCL_INDEX_NONE;
-    } else if (idx2 == TCL_INDEX_NONE) {
+    if (idx1 == (int)TCL_INDEX_NONE) {
+	suffixStart = (int)TCL_INDEX_NONE;
+    } else if (idx2 == (int)TCL_INDEX_NONE) {
 	suffixStart = idx1;
-    } else if (idx2 == TCL_INDEX_END) {
-	suffixStart = TCL_INDEX_NONE;
-    } else if (((idx2 < TCL_INDEX_END) && (idx1 <= TCL_INDEX_END))
-	    || ((idx2 >= TCL_INDEX_START) && (idx1 >= TCL_INDEX_START))) {
+    } else if (idx2 == (int)TCL_INDEX_END) {
+	suffixStart = (int)TCL_INDEX_NONE;
+    } else if (((idx2 < (int)TCL_INDEX_END) && (idx1 <= (int)TCL_INDEX_END))
+	    || ((idx2 >= (int)TCL_INDEX_START) && (idx1 >= (int)TCL_INDEX_START))) {
 	suffixStart = (idx1 > idx2 + 1) ? idx1 : idx2 + 1;
     } else {
 	return TCL_ERROR;
@@ -1546,11 +1546,11 @@ TclCompileLreplaceCmd(
 	 * and canonicalization side effects.
 	 */
 	TclEmitInstInt4(	INST_LIST_RANGE_IMM, 0,		envPtr);
-	TclEmitInt4(			TCL_INDEX_END,		envPtr);
+	TclEmitInt4(			(int)TCL_INDEX_END,		envPtr);
 	return TCL_OK;
     }
 
-    if (idx1 != TCL_INDEX_START) {
+    if (idx1 != (int)TCL_INDEX_START) {
 	/* Prefix may not be empty; generate bytecode to push it */
 	if (emptyPrefix) {
 	    TclEmitOpcode(	INST_DUP,			envPtr);
@@ -1570,7 +1570,7 @@ TclCompileLreplaceCmd(
 	TclEmitInstInt4(	INST_REVERSE, 2,		envPtr);
     }
 
-    if (suffixStart == TCL_INDEX_NONE) {
+    if (suffixStart == (int)TCL_INDEX_NONE) {
 	TclEmitOpcode(		INST_POP,			envPtr);
 	if (emptyPrefix) {
 	    PushStringLiteral(envPtr, "");
@@ -1578,7 +1578,7 @@ TclCompileLreplaceCmd(
     } else {
 	/* Suffix may not be empty; generate bytecode to push it */
 	TclEmitInstInt4(	INST_LIST_RANGE_IMM, suffixStart, envPtr);
-	TclEmitInt4(			TCL_INDEX_END,		envPtr);
+	TclEmitInt4(			(int)TCL_INDEX_END,		envPtr);
 	if (!emptyPrefix) {
 	    TclEmitOpcode(	INST_LIST_CONCAT,		envPtr);
 	}
@@ -2295,8 +2295,8 @@ TclCompileRegsubCmd(
     if (!TclWordKnownAtCompileTime(tokenPtr, patternObj)) {
 	goto done;
     }
-    if (Tcl_GetString(patternObj)[0] == '-') {
-	if (strcmp(Tcl_GetString(patternObj), "--") != 0
+    if (TclGetString(patternObj)[0] == '-') {
+	if (strcmp(TclGetString(patternObj), "--") != 0
 		|| parsePtr->numWords == 5) {
 	    goto done;
 	}
@@ -2361,7 +2361,7 @@ TclCompileRegsubCmd(
 	bytes++;
     }
   isSimpleGlob:
-    for (bytes = Tcl_GetString(replacementObj); *bytes; bytes++) {
+    for (bytes = TclGetString(replacementObj); *bytes; bytes++) {
 	switch (*bytes) {
 	case '\\': case '&':
 	    goto done;
diff --git a/generic/tclCompCmdsSZ.c b/generic/tclCompCmdsSZ.c
index 4663fac..83ade0b 100644
--- a/generic/tclCompCmdsSZ.c
+++ b/generic/tclCompCmdsSZ.c
@@ -482,16 +482,16 @@ TclCompileStringInsertCmd(
     tokenPtr = TokenAfter(tokenPtr);
     CompileWord(envPtr, tokenPtr, interp, 3);
 
-    if (idx == TCL_INDEX_START) {
+    if (idx == (int)TCL_INDEX_START) {
 	/* Prepend the insertion string */
 	OP4(	REVERSE, 2);
 	OP1(	STR_CONCAT1, 2);
-    } else  if (idx == TCL_INDEX_END) {
+    } else  if (idx == (int)TCL_INDEX_END) {
 	/* Append the insertion string */
 	OP1(	STR_CONCAT1, 2);
     } else {
 	/* Prefix + insertion + suffix */
-	if (idx < TCL_INDEX_END) {
+	if (idx < (int)TCL_INDEX_END) {
 	    /* See comments in compiler for [linsert]. */
 	    idx++;
 	}
@@ -821,7 +821,7 @@ TclCompileStringMatchCmd(
 	}
 	str = tokenPtr[1].start;
 	length = tokenPtr[1].size;
-	if ((length <= 1) || strncmp(str, "-nocase", (size_t) length)) {
+	if ((length <= 1) || strncmp(str, "-nocase", length)) {
 	    /*
 	     * Fail at run time, not in compilation.
 	     */
@@ -1012,7 +1012,7 @@ TclCompileStringRangeCmd(
      * the string the same as the start of the string.
      */
 
-    if (idx1 == TCL_INDEX_NONE) {
+    if (idx1 == (int)TCL_INDEX_NONE) {
 	/* [string range $s end+1 $last] must be empty string */
 	OP(		POP);
 	PUSH(		"");
@@ -1027,7 +1027,7 @@ TclCompileStringRangeCmd(
      * Token parsed as an index expression. We treat all indices after
      * the string the same as the end of the string.
      */
-    if (idx2 == TCL_INDEX_NONE) {
+    if (idx2 == (int)TCL_INDEX_NONE) {
 	/* [string range $s $first -1] must be empty string */
 	OP(		POP);
 	PUSH(		"");
@@ -1105,8 +1105,8 @@ TclCompileStringReplaceCmd(
      * compile direct to bytecode implementing the no-op.
      */
 
-    if ((last == TCL_INDEX_NONE)		/* Know (last < 0) */
-	    || (first == TCL_INDEX_NONE)	/* Know (first > end) */
+    if ((last == (int)TCL_INDEX_NONE)		/* Know (last < 0) */
+	    || (first == (int)TCL_INDEX_NONE)	/* Know (first > end) */
 
 	/*
 	 * Tricky to determine when runtime (last < first) can be
@@ -1117,7 +1117,7 @@ TclCompileStringReplaceCmd(
 	 *	(last <= TCL_INDEX END) && (last < first) => ACCEPT
 	 *	else => cannot tell REJECT
 	 */
-	    || ((first <= TCL_INDEX_END) && (last <= TCL_INDEX_END)
+	    || ((first <= (int)TCL_INDEX_END) && (last <= (int)TCL_INDEX_END)
 		&& (last < first))		/* Know (last < first) */
 	/*
 	 * (first == TCL_INDEX_NONE) &&
@@ -1128,7 +1128,7 @@ TclCompileStringReplaceCmd(
 	 *	(last <= TCL_INDEX_END) => cannot tell REJECT
 	 *	else [[last >= TCL_INDEX START]] && (last < first) => ACCEPT
 	 */
-	    || ((first >= TCL_INDEX_START) && (last >= TCL_INDEX_START)
+	    || ((first >= (int)TCL_INDEX_START) && (last >= (int)TCL_INDEX_START)
 		&& (last < first))) {		/* Know (last < first) */
 	if (parsePtr->numWords == 5) {
 	    tokenPtr = TokenAfter(tokenPtr);
@@ -1179,7 +1179,7 @@ TclCompileStringReplaceCmd(
      * getting a guarantee that first <= last.
      */
 
-    if ((first == TCL_INDEX_START) && (last >= TCL_INDEX_START)) {
+    if ((first == (int)TCL_INDEX_START) && (last >= (int)TCL_INDEX_START)) {
 	/* empty prefix */
 	tokenPtr = TokenAfter(tokenPtr);
 	CompileWord(envPtr, tokenPtr, interp, 4);
@@ -1187,13 +1187,13 @@ TclCompileStringReplaceCmd(
 	if (last == INT_MAX) {
 	    OP(		POP);		/* Pop  original */
 	} else {
-	    OP44(	STR_RANGE_IMM, last + 1, TCL_INDEX_END);
+	    OP44(	STR_RANGE_IMM, last + 1, (int)TCL_INDEX_END);
 	    OP1(	STR_CONCAT1, 2);
 	}
 	return TCL_OK;
     }
 
-    if ((last == TCL_INDEX_NONE) && (first <= TCL_INDEX_END)) {
+    if ((last == (int)TCL_INDEX_NONE) && (first <= (int)TCL_INDEX_END)) {
 	OP44(		STR_RANGE_IMM, 0, first-1);
 	tokenPtr = TokenAfter(tokenPtr);
 	CompileWord(envPtr, tokenPtr, interp, 4);
@@ -1210,19 +1210,19 @@ TclCompileStringReplaceCmd(
 	 * are harmless when they are replaced by another empty string.
 	 */
 
-	if (first == TCL_INDEX_START) {
+	if (first == (int)TCL_INDEX_START) {
 	    /* empty prefix - build suffix only */
 
-	    if (last == TCL_INDEX_END) {
+	    if (last == (int)TCL_INDEX_END) {
 		/* empty suffix too => empty result */
 		OP(	POP);		/* Pop  original */
 		PUSH	(	"");
 		return TCL_OK;
 	    }
-	    OP44(	STR_RANGE_IMM, last + 1, TCL_INDEX_END);
+	    OP44(	STR_RANGE_IMM, last + 1, (int)TCL_INDEX_END);
 	    return TCL_OK;
 	} else {
-	    if (last == TCL_INDEX_END) {
+	    if (last == (int)TCL_INDEX_END) {
 		/* empty suffix - build prefix only */
 		OP44(	STR_RANGE_IMM, 0, first-1);
 		return TCL_OK;
@@ -1230,7 +1230,7 @@ TclCompileStringReplaceCmd(
 	    OP(		DUP);
 	    OP44(	STR_RANGE_IMM, 0, first-1);
 	    OP4(	REVERSE, 2);
-	    OP44(	STR_RANGE_IMM, last + 1, TCL_INDEX_END);
+	    OP44(	STR_RANGE_IMM, last + 1, (int)TCL_INDEX_END);
 	    OP1(	STR_CONCAT1, 2);
 	    return TCL_OK;
 	}
diff --git a/generic/tclDecls.h b/generic/tclDecls.h
index 3b67796..3d40bef 100644
--- a/generic/tclDecls.h
+++ b/generic/tclDecls.h
@@ -3986,6 +3986,8 @@ extern const TclStubs *tclStubsPtr;
 #define Tcl_AddObjErrorInfo(interp, message, length) \
 	Tcl_AppendObjToErrorInfo(interp, Tcl_NewStringObj(message, length))
 #ifdef TCL_NO_DEPRECATED
+#undef Tcl_GetStringResult
+#define Tcl_GetStringResult(interp) Tcl_GetString(Tcl_GetObjResult(interp))
 #undef Tcl_Eval
 #define Tcl_Eval(interp, objPtr) \
 	Tcl_EvalEx(interp, objPtr, -1, 0)
diff --git a/generic/tclIO.c b/generic/tclIO.c
index cf91307..118820a 100644
--- a/generic/tclIO.c
+++ b/generic/tclIO.c
@@ -3463,6 +3463,11 @@ Tcl_Close(
     Tcl_ClearChannelHandlers(chan);
 
     /*
+     * Cancel any outstanding timer.
+     */
+    Tcl_DeleteTimerHandler(statePtr->timer);
+
+    /*
      * Invoke the registered close callbacks and delete their records.
      */
 
@@ -4447,6 +4452,8 @@ Write(
 	}
     }
 
+    UpdateInterest(chanPtr);
+
     return total;
 }
 
@@ -8475,9 +8482,9 @@ UpdateInterest(
 	     *
 	     * - Tcl drops READABLE here, because it has data in its own
 	     *	 buffers waiting to be read by the extension.
-	     * - A READABLE event is syntesized via timer.
+	     * - A READABLE event is synthesized via timer.
 	     * - The OS still reports the EXCEPTION condition on the file.
-	     * - And the extension gets the EXCPTION event first, and handles
+	     * - And the extension gets the EXCEPTION event first, and handles
 	     *	 this as EOF.
 	     *
 	     * End result ==> Premature end of reading from a file.
@@ -8503,6 +8510,16 @@ UpdateInterest(
 	    }
 	}
     }
+
+    if (!statePtr->timer
+	&& mask & TCL_WRITABLE
+	&& GotFlag(statePtr, CHANNEL_NONBLOCKING)) {
+
+	statePtr->timer = Tcl_CreateTimerHandler(SYNTHETIC_EVENT_TIME,
+	    ChannelTimerProc,chanPtr);
+    }
+
+
     ChanWatch(chanPtr, mask);
 }
 
@@ -8531,6 +8548,21 @@ ChannelTimerProc(
     ChannelState *statePtr = chanPtr->state;
 				/* State info for channel */
 
+    Tcl_Preserve(statePtr);
+    statePtr->timer = NULL;
+    if (statePtr->interestMask & TCL_WRITABLE
+	&& GotFlag(statePtr, CHANNEL_NONBLOCKING)
+	&& !GotFlag(statePtr, BG_FLUSH_SCHEDULED)
+	) {
+	/*
+	 * Restart the timer in case a channel handler reenters the event loop
+	 * before UpdateInterest gets called by Tcl_NotifyChannel.
+	 */
+	statePtr->timer = Tcl_CreateTimerHandler(SYNTHETIC_EVENT_TIME,
+                ChannelTimerProc,chanPtr);
+	Tcl_NotifyChannel((Tcl_Channel) chanPtr, TCL_WRITABLE);
+    }
+
     if (!GotFlag(statePtr, CHANNEL_NEED_MORE_DATA)
 	    && (statePtr->interestMask & TCL_READABLE)
 	    && (statePtr->inQueueHead != NULL)
@@ -8542,13 +8574,11 @@ ChannelTimerProc(
 
 	statePtr->timer = Tcl_CreateTimerHandler(SYNTHETIC_EVENT_TIME,
                 ChannelTimerProc,chanPtr);
-	Tcl_Preserve(statePtr);
 	Tcl_NotifyChannel((Tcl_Channel) chanPtr, TCL_READABLE);
-	Tcl_Release(statePtr);
     } else {
-	statePtr->timer = NULL;
 	UpdateInterest(chanPtr);
     }
+    Tcl_Release(statePtr);
 }
 
 /*
diff --git a/generic/tclIORChan.c b/generic/tclIORChan.c
index cebc33f..23049fb 100644
--- a/generic/tclIORChan.c
+++ b/generic/tclIORChan.c
@@ -114,15 +114,15 @@ typedef struct {
     int dead;			/* Boolean signal that some operations
 				 * should no longer be attempted. */
 
-    Tcl_TimerToken readTimer;   /* 
+    Tcl_TimerToken readTimer;   /*
 				   A token for the timer that is scheduled in
 				   order to call Tcl_NotifyChannel when the
-				   channel is readable 
+				   channel is readable
 			        */
-    Tcl_TimerToken writeTimer;  /* 
+    Tcl_TimerToken writeTimer;  /*
 				   A token for the timer that is scheduled in
 				   order to call Tcl_NotifyChannel when the
-				   channel is writable 
+				   channel is writable
 			        */
 
     /*
diff --git a/generic/tclInt.h b/generic/tclInt.h
index 9a2ef85..a2d19f9 100644
--- a/generic/tclInt.h
+++ b/generic/tclInt.h
@@ -3106,6 +3106,7 @@ MODULE_SCOPE int	TclMergeReturnOptions(Tcl_Interp *interp, int objc,
 MODULE_SCOPE Tcl_Obj *  TclNoErrorStack(Tcl_Interp *interp, Tcl_Obj *options);
 MODULE_SCOPE int	TclNokia770Doubles(void);
 MODULE_SCOPE void	TclNsDecrRefCount(Namespace *nsPtr);
+MODULE_SCOPE int	TclNamespaceDeleted(Namespace *nsPtr);
 MODULE_SCOPE void	TclObjVarErrMsg(Tcl_Interp *interp, Tcl_Obj *part1Ptr,
 			    Tcl_Obj *part2Ptr, const char *operation,
 			    const char *reason, int index);
@@ -4545,7 +4546,7 @@ MODULE_SCOPE void	TclDbInitNewObj(Tcl_Obj *objPtr, const char *file,
 	    (bignum).alloc = (bignumPayload >> 15) & 0x7fff;		\
 	    (bignum).used = bignumPayload & 0x7fff;			\
 	}								\
-    } while (0) 
+    } while (0)
 
 /*
  *----------------------------------------------------------------
diff --git a/generic/tclLink.c b/generic/tclLink.c
index 8096c25..030e471 100644
--- a/generic/tclLink.c
+++ b/generic/tclLink.c
@@ -27,6 +27,7 @@
 
 typedef struct Link {
     Tcl_Interp *interp;		/* Interpreter containing Tcl variable. */
+    Namespace *nsPtr;		/* Namespace containing Tcl variable */
     Tcl_Obj *varName;		/* Name of variable (must be global). This is
 				 * needed during trace callbacks, since the
 				 * actual variable may be aliased at that time
@@ -158,6 +159,8 @@ Tcl_LinkVar(
 {
     Tcl_Obj *objPtr;
     Link *linkPtr;
+    Namespace *dummy;
+    const char *name;
     int code;
 
     linkPtr = (Link *) Tcl_VarTraceInfo2(interp, varName, NULL,
@@ -170,6 +173,7 @@ Tcl_LinkVar(
 
     linkPtr = ckalloc(sizeof(Link));
     linkPtr->interp = interp;
+    linkPtr->nsPtr = NULL;
     linkPtr->varName = Tcl_NewStringObj(varName, -1);
     Tcl_IncrRefCount(linkPtr->varName);
     linkPtr->addr = addr;
@@ -196,6 +200,11 @@ Tcl_LinkVar(
 	LinkFree(linkPtr);
 	return TCL_ERROR;
     }
+
+    TclGetNamespaceForQualName(interp, varName, NULL, TCL_GLOBAL_ONLY,
+	    &(linkPtr->nsPtr), &dummy, &dummy, &name);
+    linkPtr->nsPtr->refCount++;
+
     code = Tcl_TraceVar2(interp, varName, NULL,
 	    TCL_GLOBAL_ONLY|TCL_TRACE_READS|TCL_TRACE_WRITES|TCL_TRACE_UNSETS,
 	    LinkTraceProc, linkPtr);
@@ -240,6 +249,8 @@ Tcl_LinkArray(
 {
     Tcl_Obj *objPtr;
     Link *linkPtr;
+    Namespace *dummy;
+    const char *name;
     int code;
 
     if (size < 1) {
@@ -362,6 +373,11 @@ Tcl_LinkArray(
     linkPtr->interp = interp;
     linkPtr->varName = Tcl_NewStringObj(varName, -1);
     Tcl_IncrRefCount(linkPtr->varName);
+
+    TclGetNamespaceForQualName(interp, varName, NULL, TCL_GLOBAL_ONLY,
+	    &(linkPtr->nsPtr), &dummy, &dummy, &name);
+    linkPtr->nsPtr->refCount++;
+
     objPtr = ObjValue(linkPtr);
     if (Tcl_ObjSetVar2(interp, linkPtr->varName, NULL, objPtr,
 	    TCL_GLOBAL_ONLY|TCL_LEAVE_ERR_MSG) == NULL) {
@@ -376,8 +392,6 @@ Tcl_LinkArray(
     if (code != TCL_OK) {
 	Tcl_DecrRefCount(linkPtr->varName);
 	LinkFree(linkPtr);
-    } else {
-	Tcl_SetObjResult(interp, Tcl_NewIntObj((int) linkPtr->addr));
     }
     return code;
 }
@@ -747,7 +761,7 @@ LinkTraceProc(
      */
 
     if (flags & TCL_TRACE_UNSETS) {
-	if (Tcl_InterpDeleted(interp)) {
+	if (Tcl_InterpDeleted(interp) || TclNamespaceDeleted(linkPtr->nsPtr)) {
 	    Tcl_DecrRefCount(linkPtr->varName);
 	    LinkFree(linkPtr);
 	} else if (flags & TCL_TRACE_DESTROYED) {
@@ -1497,6 +1511,9 @@ static void
 LinkFree(
     Link *linkPtr)		/* Structure describing linked variable. */
 {
+    if (linkPtr->nsPtr) {
+	TclNsDecrRefCount(linkPtr->nsPtr);
+    }
     if (linkPtr->flags & LINK_ALLOC_ADDR) {
 	ckfree(linkPtr->addr);
     }
diff --git a/generic/tclNamesp.c b/generic/tclNamesp.c
index b553880..bbe357d 100644
--- a/generic/tclNamesp.c
+++ b/generic/tclNamesp.c
@@ -1086,6 +1086,13 @@ Tcl_DeleteNamespace(
     }
     TclNsDecrRefCount(nsPtr);
 }
+
+int
+TclNamespaceDeleted(
+    Namespace *nsPtr)
+{
+    return (nsPtr->flags & NS_DYING) ? 1 : 0;
+}
 
 /*
  *----------------------------------------------------------------------
diff --git a/generic/tclOO.c b/generic/tclOO.c
index 0440395..e9cc0f0 100644
--- a/generic/tclOO.c
+++ b/generic/tclOO.c
@@ -346,14 +346,14 @@ InitFoundation(
      */
 
     Tcl_DStringInit(&buffer);
-    for (i=0 ; defineCmds[i].name ; i++) {
+    for (i = 0 ; defineCmds[i].name ; i++) {
 	TclDStringAppendLiteral(&buffer, "::oo::define::");
 	Tcl_DStringAppend(&buffer, defineCmds[i].name, -1);
 	Tcl_CreateObjCommand(interp, Tcl_DStringValue(&buffer),
 		defineCmds[i].objProc, INT2PTR(defineCmds[i].flag), NULL);
 	Tcl_DStringFree(&buffer);
     }
-    for (i=0 ; objdefCmds[i].name ; i++) {
+    for (i = 0 ; objdefCmds[i].name ; i++) {
 	TclDStringAppendLiteral(&buffer, "::oo::objdefine::");
 	Tcl_DStringAppend(&buffer, objdefCmds[i].name, -1);
 	Tcl_CreateObjCommand(interp, Tcl_DStringValue(&buffer),
@@ -373,10 +373,10 @@ InitFoundation(
      * Basic method declarations for the core classes.
      */
 
-    for (i=0 ; objMethods[i].name ; i++) {
+    for (i = 0 ; objMethods[i].name ; i++) {
 	TclOONewBasicMethod(interp, fPtr->objectCls, &objMethods[i]);
     }
-    for (i=0 ; clsMethods[i].name ; i++) {
+    for (i = 0 ; clsMethods[i].name ; i++) {
 	TclOONewBasicMethod(interp, fPtr->classCls, &clsMethods[i]);
     }
 
@@ -388,7 +388,7 @@ InitFoundation(
 
     TclNewLiteralStringObj(namePtr, "new");
     Tcl_NewInstanceMethod(interp, (Tcl_Object) fPtr->classCls->thisPtr,
-	    namePtr /* keeps ref */, 0 /* ==private */, NULL, NULL);
+	    namePtr /* keeps ref */, 0 /* private */, NULL, NULL);
     fPtr->classCls->constructorPtr = (Method *) Tcl_NewMethod(interp,
 	    (Tcl_Class) fPtr->classCls, NULL, 0, &classConstructor, NULL);
 
@@ -667,10 +667,8 @@ AllocObject(
 	Tcl_ResetResult(interp);
     }
 
-
   configNamespace:
-
-    ((Namespace *)oPtr->namespacePtr)->refCount++;
+    ((Namespace *) oPtr->namespacePtr)->refCount++;
 
     /*
      * Make the namespace know about the helper commands. This grants access
@@ -874,10 +872,14 @@ TclOODeleteDescendants(
 
     if (clsPtr->mixinSubs.num > 0) {
 	while (clsPtr->mixinSubs.num > 0) {
-	    mixinSubclassPtr = clsPtr->mixinSubs.list[clsPtr->mixinSubs.num-1];
-	    /* This condition also covers the case where mixinSubclassPtr ==
+	    mixinSubclassPtr =
+		    clsPtr->mixinSubs.list[clsPtr->mixinSubs.num - 1];
+
+	    /*
+	     * This condition also covers the case where mixinSubclassPtr ==
 	     * clsPtr
 	     */
+
 	    if (!Deleted(mixinSubclassPtr->thisPtr)
 		    && !(mixinSubclassPtr->thisPtr->flags & DONT_DELETE)) {
 		Tcl_DeleteCommandFromToken(interp,
@@ -897,7 +899,7 @@ TclOODeleteDescendants(
 
     if (clsPtr->subclasses.num > 0) {
 	while (clsPtr->subclasses.num > 0) {
-	    subclassPtr = clsPtr->subclasses.list[clsPtr->subclasses.num-1];
+	    subclassPtr = clsPtr->subclasses.list[clsPtr->subclasses.num - 1];
 	    if (!Deleted(subclassPtr->thisPtr) && !IsRoot(subclassPtr)
 		    && !(subclassPtr->thisPtr->flags & DONT_DELETE)) {
 		Tcl_DeleteCommandFromToken(interp,
@@ -918,7 +920,8 @@ TclOODeleteDescendants(
 
     if (clsPtr->instances.num > 0) {
 	while (clsPtr->instances.num > 0) {
-	    instancePtr = clsPtr->instances.list[clsPtr->instances.num-1];
+	    instancePtr = clsPtr->instances.list[clsPtr->instances.num - 1];
+
 	    /*
 	     * This condition also covers the case where instancePtr == oPtr
 	     */
@@ -1119,8 +1122,8 @@ ObjectNamespaceDeleted(
 
     if (Deleted(oPtr)) {
 	/*
-	 * TODO: Can ObjectNamespaceDeleted ever be called twice? If not, this
-	 * guard could be removed.
+	 * TODO:  Can ObjectNamespaceDeleted ever be called twice?  If not,
+	 * this guard could be removed.
 	 */
 
 	return;
@@ -1134,7 +1137,10 @@ ObjectNamespaceDeleted(
 
     oPtr->flags |= OBJECT_DELETED;
 
-    /* Let the dominoes fall */
+    /*
+     * Let the dominoes fall!
+     */
+
     if (oPtr->classPtr) {
 	TclOODeleteDescendants(interp, oPtr);
     }
@@ -1150,8 +1156,8 @@ ObjectNamespaceDeleted(
 	CallContext *contextPtr =
 		TclOOGetCallContext(oPtr, NULL, DESTRUCTOR, NULL, NULL, NULL);
 	int result;
-
 	Tcl_InterpState state;
+
 	oPtr->flags |= DESTRUCTOR_CALLED;
 
 	if (contextPtr != NULL) {
@@ -1170,12 +1176,12 @@ ObjectNamespaceDeleted(
 
     /*
      * Instruct everyone to no longer use any allocated fields of the object.
-     * Also delete the command that refers to the object at this point (if
-     * it still exists) because otherwise its pointer to the object
-     * points into freed memory.
+     * Also delete the command that refers to the object at this point (if it
+     * still exists) because otherwise its pointer to the object points into
+     * freed memory.
      */
 
-    if (((Command *)oPtr->command)->flags && CMD_IS_DELETED) {
+    if (((Command *) oPtr->command)->flags && CMD_IS_DELETED) {
 	/*
 	 * Something has already started the command deletion process. We can
 	 * go ahead and clean up the the namespace,
@@ -1201,10 +1207,7 @@ ObjectNamespaceDeleted(
      * methods on the object.
      */
 
-    /*
-     * TODO: Should this be protected with a * !IsRoot() condition?
-     */
-
+    /* TODO: Should this be protected with a !IsRoot() condition? */
     TclOORemoveFromInstances(oPtr, oPtr->selfCls);
 
     if (oPtr->mixins.num > 0) {
@@ -1765,7 +1768,6 @@ TclNRNewObjectInstance(
     TclPushTailcallPoint(interp);
     return TclOOInvokeContext(contextPtr, interp, objc, objv);
 }
-
 
 Object *
 TclNewObjectInstanceCommon(
@@ -1780,7 +1782,6 @@ TclNewObjectInstanceCommon(
     const char *simpleName = NULL;
     Namespace *nsPtr = NULL, *dummy;
     Namespace *inNsPtr = (Namespace *) TclGetCurrentNamespace(interp);
-    int isNew;
 
     if (nameStr) {
 	TclGetNamespaceForQualName(interp, nameStr, inNsPtr,
@@ -1790,21 +1791,14 @@ TclNewObjectInstanceCommon(
 	 * Disallow creation of an object over an existing command.
 	 */
 
-	hPtr = Tcl_CreateHashEntry(&nsPtr->cmdTable, simpleName, &isNew);
-	if (!isNew) {
+	hPtr = Tcl_FindHashEntry(&nsPtr->cmdTable, simpleName);
+	if (hPtr) {
 	    Tcl_SetObjResult(interp, Tcl_ObjPrintf(
 		    "can't create object \"%s\": command already exists with"
 		    " that name", nameStr));
 	    Tcl_SetErrorCode(interp, "TCL", "OO", "OVERWRITE_OBJECT", NULL);
 	    return NULL;
 	}
-
-	/*
-	 * We could make a hash entry! Don't actually want to do that here so
-	 * nuke it immediately because we'll create it properly soon.
-	 */
-
-	Tcl_DeleteHashEntry(hPtr);
     }
 
     /*
@@ -1837,8 +1831,6 @@ TclNewObjectInstanceCommon(
     return oPtr;
 }
 
-
-
 static int
 FinalizeAlloc(
     ClientData data[],
@@ -1974,7 +1966,11 @@ Tcl_CopyObjectInstance(
 	if (mixinPtr && mixinPtr != o2Ptr->selfCls) {
 	    TclOOAddToInstances(o2Ptr, mixinPtr);
 	}
-	/* For the reference just created in DUPLICATE */
+
+	/*
+	 * For the reference just created in DUPLICATE.
+	 */
+
 	AddRef(mixinPtr->thisPtr);
     }
 
@@ -2012,6 +2008,7 @@ Tcl_CopyObjectInstance(
 
     o2Ptr->flags = oPtr->flags & ~(
 	    OBJECT_DELETED | ROOT_OBJECT | ROOT_CLASS | FILTER_HANDLING);
+
     /*
      * Copy the object's metadata.
      */
@@ -2075,9 +2072,11 @@ Tcl_CopyObjectInstance(
 	FOREACH(superPtr, cls2Ptr->superclasses) {
 	    TclOOAddToSubclasses(cls2Ptr, superPtr);
 
-	    /* For the new item in cls2Ptr->superclasses that memcpy just
-	     * created
+	    /*
+	     * For the new item in cls2Ptr->superclasses that memcpy just
+	     * created.
 	     */
+
 	    AddRef(superPtr->thisPtr);
 	}
 
@@ -2121,7 +2120,11 @@ Tcl_CopyObjectInstance(
 	DUPLICATE(cls2Ptr->mixins, clsPtr->mixins, Class *);
 	FOREACH(mixinPtr, cls2Ptr->mixins) {
 	    TclOOAddToMixinSubs(cls2Ptr, mixinPtr);
-	    /* For the copy just created in DUPLICATE */
+
+	    /*
+	     * For the copy just created in DUPLICATE.
+	     */
+
 	    AddRef(mixinPtr->thisPtr);
 	}
 
@@ -2783,7 +2786,7 @@ Tcl_ObjectContextInvokeNext(
     int savedSkip = contextPtr->skip;
     int result;
 
-    if (contextPtr->index+1 >= contextPtr->callPtr->numChain) {
+    if (contextPtr->index + 1 >= contextPtr->callPtr->numChain) {
 	/*
 	 * We're at the end of the chain; generate an error message unless the
 	 * interpreter is being torn down, in which case we might be getting
@@ -2852,7 +2855,7 @@ TclNRObjectContextInvokeNext(
 {
     register CallContext *contextPtr = (CallContext *) context;
 
-    if (contextPtr->index+1 >= contextPtr->callPtr->numChain) {
+    if (contextPtr->index + 1 >= contextPtr->callPtr->numChain) {
 	/*
 	 * We're at the end of the chain; generate an error message unless the
 	 * interpreter is being torn down, in which case we might be getting
diff --git a/generic/tclOOCall.c b/generic/tclOOCall.c
index ace7fd7..c0d2e64 100644
--- a/generic/tclOOCall.c
+++ b/generic/tclOOCall.c
@@ -328,7 +328,7 @@ TclOOInvokeContext(
     if (contextPtr->index == 0) {
 	int i;
 
-	for (i=0 ; i<contextPtr->callPtr->numChain ; i++) {
+	for (i = 0 ; i < contextPtr->callPtr->numChain ; i++) {
 	    AddRef(contextPtr->callPtr->chain[i].mPtr);
 	}
 
@@ -406,7 +406,7 @@ FinalizeMethodRefs(
     CallContext *contextPtr = data[0];
     int i;
 
-    for (i=0 ; i<contextPtr->callPtr->numChain ; i++) {
+    for (i = 0 ; i < contextPtr->callPtr->numChain ; i++) {
 	TclOODelMethodRef(contextPtr->callPtr->chain[i].mPtr);
     }
     return result;
@@ -641,7 +641,10 @@ SortMethodNames(
     return i;
 }
 
-/* Comparator for SortMethodNames */
+/*
+ * Comparator for SortMethodNames
+ */
+
 static int
 CmpStr(
     const void *ptr1,
@@ -1004,7 +1007,7 @@ AddMethodToCallChain(
      * any leading filters.
      */
 
-    for (i=cbPtr->filterLength ; i<callPtr->numChain ; i++) {
+    for (i = cbPtr->filterLength ; i < callPtr->numChain ; i++) {
 	if (callPtr->chain[i].mPtr == mPtr &&
 		callPtr->chain[i].isFilter == (doneFilters != NULL)) {
 	    /*
@@ -1016,8 +1019,8 @@ AddMethodToCallChain(
 
 	    Class *declCls = callPtr->chain[i].filterDeclarer;
 
-	    for (; i+1<callPtr->numChain ; i++) {
-		callPtr->chain[i] = callPtr->chain[i+1];
+	    for (; i + 1 < callPtr->numChain ; i++) {
+		callPtr->chain[i] = callPtr->chain[i + 1];
 	    }
 	    callPtr->chain[i].mPtr = mPtr;
 	    callPtr->chain[i].isFilter = (doneFilters != NULL);
@@ -1817,7 +1820,7 @@ TclOORenderCallChain(
      */
 
     objv = TclStackAlloc(interp, callPtr->numChain * sizeof(Tcl_Obj *));
-    for (i=0 ; i<callPtr->numChain ; i++) {
+    for (i = 0 ; i < callPtr->numChain ; i++) {
 	struct MInvoke *miPtr = &callPtr->chain[i];
 
 	descObjs[0] =
diff --git a/generic/tclOODefineCmds.c b/generic/tclOODefineCmds.c
index 65d6ea1..6a00018 100644
--- a/generic/tclOODefineCmds.c
+++ b/generic/tclOODefineCmds.c
@@ -50,6 +50,12 @@ struct DeclaredSlot {
 		    resolver, NULL, NULL}}
 
 /*
+ * A [string match] pattern used to determine if a method should be exported.
+ */
+
+#define PUBLIC_PATTERN		"[a-z]*"
+
+/*
  * Forward declarations.
  */
 
@@ -278,7 +284,7 @@ TclOOObjectSetFilters(
 	} else {
 	    filtersList = ckrealloc(oPtr->filters.list, size);
 	}
-	for (i=0 ; i<numFilters ; i++) {
+	for (i = 0 ; i < numFilters ; i++) {
 	    filtersList[i] = filters[i];
 	    Tcl_IncrRefCount(filters[i]);
 	}
@@ -337,7 +343,7 @@ TclOOClassSetFilters(
 	} else {
 	    filtersList = ckrealloc(classPtr->filters.list, size);
 	}
-	for (i=0 ; i<numFilters ; i++) {
+	for (i = 0 ; i < numFilters ; i++) {
 	    filtersList[i] = filters[i];
 	    Tcl_IncrRefCount(filters[i]);
 	}
@@ -400,7 +406,11 @@ TclOOObjectSetMixins(
 	FOREACH(mixinPtr, oPtr->mixins) {
 	    if (mixinPtr != oPtr->selfCls) {
 		TclOOAddToInstances(oPtr, mixinPtr);
-		/* For the new copy created by memcpy */
+
+		/*
+		 * For the new copy created by memcpy().
+		 */
+
 		AddRef(mixinPtr->thisPtr);
 	    }
 	}
@@ -452,7 +462,11 @@ TclOOClassSetMixins(
 	memcpy(classPtr->mixins.list, mixins, sizeof(Class *) * numMixins);
 	FOREACH(mixinPtr, classPtr->mixins) {
 	    TclOOAddToMixinSubs(classPtr, mixinPtr);
-	    /* For the new copy created by memcpy */
+
+	    /*
+	     * For the new copy created by memcpy.
+	     */
+
 	    AddRef(mixinPtr->thisPtr);
 	}
     }
@@ -724,15 +738,16 @@ TclOOUnknownDefinition(
 	 * Got one match, and only one match!
 	 */
 
-	Tcl_Obj **newObjv = TclStackAlloc(interp, sizeof(Tcl_Obj*)*(objc-1));
+	Tcl_Obj **newObjv =
+		TclStackAlloc(interp, sizeof(Tcl_Obj*) * (objc - 1));
 	int result;
 
 	newObjv[0] = Tcl_NewStringObj(matchedStr, -1);
 	Tcl_IncrRefCount(newObjv[0]);
 	if (objc > 2) {
-	    memcpy(newObjv+1, objv+2, sizeof(Tcl_Obj *) * (objc-2));
+	    memcpy(newObjv + 1, objv + 2, sizeof(Tcl_Obj *) * (objc - 2));
 	}
-	result = Tcl_EvalObjv(interp, objc-1, newObjv, 0);
+	result = Tcl_EvalObjv(interp, objc - 1, newObjv, 0);
 	Tcl_DecrRefCount(newObjv[0]);
 	TclStackFree(interp, newObjv);
 	return result;
@@ -1039,17 +1054,20 @@ MagicDefinitionInvoke(
     obj2Ptr = Tcl_NewObj();
     cmd = FindCommand(interp, objv[cmdIndex], nsPtr);
     if (cmd == NULL) {
-	/* punt this case! */
+	/*
+	 * Punt this case!
+	 */
+
 	Tcl_AppendObjToObj(obj2Ptr, objv[cmdIndex]);
     } else {
 	Tcl_GetCommandFullName(interp, cmd, obj2Ptr);
     }
     Tcl_ListObjAppendElement(NULL, objPtr, obj2Ptr);
     /* TODO: overflow? */
-    Tcl_ListObjReplace(NULL, objPtr, 1, 0, objc-offset, objv+offset);
+    Tcl_ListObjReplace(NULL, objPtr, 1, 0, objc - offset, objv + offset);
     Tcl_ListObjGetElements(NULL, objPtr, &dummy, &objs);
 
-    result = Tcl_EvalObjv(interp, objc-cmdIndex, objs, TCL_EVAL_INVOKE);
+    result = Tcl_EvalObjv(interp, objc - cmdIndex, objs, TCL_EVAL_INVOKE);
     if (isRoot) {
 	TclResetRewriteEnsemble(interp, 1);
     }
@@ -1685,7 +1703,7 @@ TclOODefineDeleteMethodObjCmd(
 	return TCL_ERROR;
     }
 
-    for (i=1 ; i<objc ; i++) {
+    for (i = 1; i < objc; i++) {
 	/*
 	 * Delete the method structure from the appropriate hash table.
 	 */
@@ -1811,7 +1829,7 @@ TclOODefineExportObjCmd(
 	return TCL_ERROR;
     }
 
-    for (i=1 ; i<objc ; i++) {
+    for (i = 1; i < objc; i++) {
 	/*
 	 * Exporting is done by adding the PUBLIC_METHOD flag to the method
 	 * record. If there is no such method in this object or class (i.e.
@@ -1904,7 +1922,7 @@ TclOODefineForwardObjCmd(
 	Tcl_SetErrorCode(interp, "TCL", "OO", "MONKEY_BUSINESS", NULL);
 	return TCL_ERROR;
     }
-    isPublic = Tcl_StringMatch(TclGetString(objv[1]), "[a-z]*")
+    isPublic = Tcl_StringMatch(TclGetString(objv[1]), PUBLIC_PATTERN)
 	    ? PUBLIC_METHOD : 0;
     if (IsPrivateDefine(interp)) {
 	isPublic = TRUE_PRIVATE_METHOD;
@@ -1914,7 +1932,7 @@ TclOODefineForwardObjCmd(
      * Create the method structure.
      */
 
-    prefixObj = Tcl_NewListObj(objc-2, objv+2);
+    prefixObj = Tcl_NewListObj(objc - 2, objv + 2);
     if (isInstanceForward) {
 	mPtr = TclOONewForwardInstanceMethod(interp, oPtr, isPublic, objv[1],
 		prefixObj);
@@ -2002,7 +2020,7 @@ TclOODefineMethodObjCmd(
 	if (IsPrivateDefine(interp)) {
 	    isPublic = TRUE_PRIVATE_METHOD;
 	} else {
-	    isPublic = Tcl_StringMatch(TclGetString(objv[1]), "[a-z]*")
+	    isPublic = Tcl_StringMatch(TclGetString(objv[1]), PUBLIC_PATTERN)
 		    ? PUBLIC_METHOD : 0;
 	}
     }
@@ -2124,7 +2142,7 @@ TclOODefineUnexportObjCmd(
 	return TCL_ERROR;
     }
 
-    for (i=1 ; i<objc ; i++) {
+    for (i = 1; i < objc; i++) {
 	/*
 	 * Unexporting is done by removing the PUBLIC_METHOD flag from the
 	 * method record. If there is no such method in this object or class
@@ -2340,7 +2358,7 @@ ClassFilterSet(
     int filterc;
     Tcl_Obj **filterv;
 
-    if (Tcl_ObjectContextSkippedArgs(context)+1 != objc) {
+    if (Tcl_ObjectContextSkippedArgs(context) + 1 != objc) {
 	Tcl_WrongNumArgs(interp, Tcl_ObjectContextSkippedArgs(context), objv,
 		"filterList");
 	return TCL_ERROR;
@@ -2424,7 +2442,7 @@ ClassMixinSet(
     Tcl_Obj **mixinv;
     Class **mixins;
 
-    if (Tcl_ObjectContextSkippedArgs(context)+1 != objc) {
+    if (Tcl_ObjectContextSkippedArgs(context) + 1 != objc) {
 	Tcl_WrongNumArgs(interp, Tcl_ObjectContextSkippedArgs(context), objv,
 		"mixinList");
 	return TCL_ERROR;
@@ -2445,7 +2463,7 @@ ClassMixinSet(
 
     mixins = TclStackAlloc(interp, sizeof(Class *) * mixinc);
 
-    for (i=0 ; i<mixinc ; i++) {
+    for (i = 0; i < mixinc; i++) {
 	mixins[i] = GetClassInOuterContext(interp, mixinv[i],
 		"may only mix in classes");
 	if (mixins[i] == NULL) {
@@ -2529,7 +2547,7 @@ ClassSuperSet(
     Tcl_Obj **superv;
     Class **superclasses, *superPtr;
 
-    if (Tcl_ObjectContextSkippedArgs(context)+1 != objc) {
+    if (Tcl_ObjectContextSkippedArgs(context) + 1 != objc) {
 	Tcl_WrongNumArgs(interp, Tcl_ObjectContextSkippedArgs(context), objv,
 		"superclassList");
 	return TCL_ERROR;
@@ -2576,14 +2594,14 @@ ClassSuperSet(
 	superc = 1;
 	AddRef(superclasses[0]->thisPtr);
     } else {
-	for (i=0 ; i<superc ; i++) {
+	for (i = 0; i < superc; i++) {
 	    superclasses[i] = GetClassInOuterContext(interp, superv[i],
 		    "only a class can be a superclass");
 	    if (superclasses[i] == NULL) {
 		i--;
 		goto failedAfterAlloc;
 	    }
-	    for (j=0 ; j<i ; j++) {
+	    for (j = 0; j < i; j++) {
 		if (superclasses[j] == superclasses[i]) {
 		    Tcl_SetObjResult(interp, Tcl_NewStringObj(
 			    "class should only be a direct superclass once",
@@ -2705,7 +2723,7 @@ ClassVarsSet(
     Tcl_Obj **varv;
     int i;
 
-    if (Tcl_ObjectContextSkippedArgs(context)+1 != objc) {
+    if (Tcl_ObjectContextSkippedArgs(context) + 1 != objc) {
 	Tcl_WrongNumArgs(interp, Tcl_ObjectContextSkippedArgs(context), objv,
 		"filterList");
 	return TCL_ERROR;
@@ -2724,7 +2742,7 @@ ClassVarsSet(
 	return TCL_ERROR;
     }
 
-    for (i=0 ; i<varc ; i++) {
+    for (i = 0; i < varc; i++) {
 	const char *varName = TclGetString(varv[i]);
 
 	if (strstr(varName, "::") != NULL) {
@@ -2803,7 +2821,7 @@ ObjFilterSet(
     int filterc;
     Tcl_Obj **filterv;
 
-    if (Tcl_ObjectContextSkippedArgs(context)+1 != objc) {
+    if (Tcl_ObjectContextSkippedArgs(context) + 1 != objc) {
 	Tcl_WrongNumArgs(interp, Tcl_ObjectContextSkippedArgs(context), objv,
 		"filterList");
 	return TCL_ERROR;
@@ -2877,7 +2895,7 @@ ObjMixinSet(
     Class **mixins;
     int i;
 
-    if (Tcl_ObjectContextSkippedArgs(context)+1 != objc) {
+    if (Tcl_ObjectContextSkippedArgs(context) + 1 != objc) {
 	Tcl_WrongNumArgs(interp, Tcl_ObjectContextSkippedArgs(context), objv,
 		"mixinList");
 	return TCL_ERROR;
@@ -2892,7 +2910,7 @@ ObjMixinSet(
 
     mixins = TclStackAlloc(interp, sizeof(Class *) * mixinc);
 
-    for (i=0 ; i<mixinc ; i++) {
+    for (i = 0; i < mixinc; i++) {
 	mixins[i] = GetClassInOuterContext(interp, mixinv[i],
 		"may only mix in classes");
 	if (mixins[i] == NULL) {
@@ -2967,7 +2985,7 @@ ObjVarsSet(
     int varc, i;
     Tcl_Obj **varv;
 
-    if (Tcl_ObjectContextSkippedArgs(context)+1 != objc) {
+    if (Tcl_ObjectContextSkippedArgs(context) + 1 != objc) {
 	Tcl_WrongNumArgs(interp, Tcl_ObjectContextSkippedArgs(context), objv,
 		"variableList");
 	return TCL_ERROR;
@@ -2980,7 +2998,7 @@ ObjVarsSet(
 	return TCL_ERROR;
     }
 
-    for (i=0 ; i<varc ; i++) {
+    for (i = 0; i < varc; i++) {
 	const char *varName = TclGetString(varv[i]);
 
 	if (strstr(varName, "::") != NULL) {
diff --git a/generic/tclResult.c b/generic/tclResult.c
index 5a03421..4d14f01 100644
--- a/generic/tclResult.c
+++ b/generic/tclResult.c
@@ -464,7 +464,6 @@ Tcl_SetResult(
 
     ResetObjResult(iPtr);
 }
-#endif /* !TCL_NO_DEPRECATED */
 
 /*
  *----------------------------------------------------------------------
@@ -488,9 +487,6 @@ Tcl_GetStringResult(
     register Tcl_Interp *interp)/* Interpreter whose result to return. */
 {
     Interp *iPtr = (Interp *) interp;
-#ifdef TCL_NO_DEPRECATED
-    return Tcl_GetString(iPtr->objResultPtr);
-#else
     /*
      * If the string result is empty, move the object result to the string
      * result, then reset the object result.
@@ -501,8 +497,8 @@ Tcl_GetStringResult(
 		TCL_VOLATILE);
     }
     return iPtr->result;
-#endif
 }
+#endif /* !TCL_NO_DEPRECATED */
 
 /*
  *----------------------------------------------------------------------
diff --git a/generic/tclStrToD.c b/generic/tclStrToD.c
index e7cb2c5..c9abb1a 100644
--- a/generic/tclStrToD.c
+++ b/generic/tclStrToD.c
@@ -1849,15 +1849,15 @@ RefineApproximation(
      */
 
     msb = binExponent + M2;	/* 1008 */
-    nDigits = msb / DIGIT_BIT + 1;
+    nDigits = msb / MP_DIGIT_BIT + 1;
     mp_init_size(&twoMv, nDigits);
-    i = (msb % DIGIT_BIT + 1);
+    i = (msb % MP_DIGIT_BIT + 1);
     twoMv.used = nDigits;
     significand *= SafeLdExp(1.0, i);
     while (--nDigits >= 0) {
 	twoMv.dp[nDigits] = (mp_digit) significand;
 	significand -= (mp_digit) significand;
-	significand = SafeLdExp(significand, DIGIT_BIT);
+	significand = SafeLdExp(significand, MP_DIGIT_BIT);
     }
     for (i = 0; i <= 8; ++i) {
 	if (M5 & (1 << i)) {
@@ -3145,7 +3145,7 @@ ShouldBankerRoundUpPowD(
     int isodd)			/* 1 if the digit is odd, 0 if even. */
 {
     int i;
-    static const mp_digit topbit = ((mp_digit)1) << (DIGIT_BIT - 1);
+    static const mp_digit topbit = ((mp_digit)1) << (MP_DIGIT_BIT - 1);
 
     if (b->used < sd || (b->dp[sd-1] & topbit) == 0) {
 	return 0;
@@ -4214,8 +4214,8 @@ TclDoubleDigits(
 	     * in the denominator' case.
 	     */
 
-	    if (s2 % DIGIT_BIT != 0) {
-		int delta = DIGIT_BIT - (s2 % DIGIT_BIT);
+	    if (s2 % MP_DIGIT_BIT != 0) {
+		int delta = MP_DIGIT_BIT - (s2 % MP_DIGIT_BIT);
 
 		b2 += delta;
 		m2plus += delta;
@@ -4223,7 +4223,7 @@ TclDoubleDigits(
 		s2 += delta;
 	    }
 	    return ShorteningBignumConversionPowD(&d, bw, b2, b5,
-		    m2plus, m2minus, m5, s2/DIGIT_BIT, k, len, ilim, ilim1,
+		    m2plus, m2minus, m5, s2/MP_DIGIT_BIT, k, len, ilim, ilim1,
 		    decpt, endPtr);
 	} else {
 	    /*
@@ -4270,14 +4270,14 @@ TclDoubleDigits(
 	     * in the denominator' case.
 	     */
 
-	    if (s2 % DIGIT_BIT != 0) {
-		int delta = DIGIT_BIT - (s2 % DIGIT_BIT);
+	    if (s2 % MP_DIGIT_BIT != 0) {
+		int delta = MP_DIGIT_BIT - (s2 % MP_DIGIT_BIT);
 
 		b2 += delta;
 		s2 += delta;
 	    }
 	    return StrictBignumConversionPowD(&d, bw, b2, b5,
-		    s2/DIGIT_BIT, k, len, ilim, ilim1, decpt, endPtr);
+		    s2/MP_DIGIT_BIT, k, len, ilim, ilim1, decpt, endPtr);
 	} else {
 	    /*
 	     * There are no helpful special cases, but at least we know in
@@ -4402,7 +4402,7 @@ TclInitDoubleConversion(void)
 	    + 0.5 * log(10.)) / log(10.));
     minDigits = (int) floor((DBL_MIN_EXP - DBL_MANT_DIG)
 	    * log((double) FLT_RADIX) / log(10.));
-    log10_DIGIT_MAX = (int) floor(DIGIT_BIT * log(2.) / log(10.));
+    log10_DIGIT_MAX = (int) floor(MP_DIGIT_BIT * log(2.) / log(10.));
 
     /*
      * Nokia 770's software-emulated floating point is "middle endian": the
@@ -4606,7 +4606,7 @@ TclBignumToDouble(
 
     r = 0.0;
     for (i=b.used-1 ; i>=0 ; --i) {
-	r = ldexp(r, DIGIT_BIT) + b.dp[i];
+	r = ldexp(r, MP_DIGIT_BIT) + b.dp[i];
     }
     mp_clear(&b);
 
@@ -4675,7 +4675,7 @@ TclCeil(
 		mp_add_d(&b, 1, &b);
 	    }
 	    for (i=b.used-1 ; i>=0 ; --i) {
-		r = ldexp(r, DIGIT_BIT) + b.dp[i];
+		r = ldexp(r, MP_DIGIT_BIT) + b.dp[i];
 	    }
 	    r = ldexp(r, bits - mantBits);
 	}
@@ -4725,7 +4725,7 @@ TclFloor(
 		mp_copy(a, &b);
 	    }
 	    for (i=b.used-1 ; i>=0 ; --i) {
-		r = ldexp(r, DIGIT_BIT) + b.dp[i];
+		r = ldexp(r, MP_DIGIT_BIT) + b.dp[i];
 	    }
 	    r = ldexp(r, bits - mantBits);
 	}
@@ -4787,7 +4787,7 @@ BignumToBiasedFrExp(
 
     r = 0.0;
     for (i=b.used-1; i>=0; --i) {
-	r = ldexp(r, DIGIT_BIT) + b.dp[i];
+	r = ldexp(r, MP_DIGIT_BIT) + b.dp[i];
     }
     mp_clear(&b);
 
diff --git a/generic/tclStringObj.c b/generic/tclStringObj.c
index 6652f15..547ece1 100644
--- a/generic/tclStringObj.c
+++ b/generic/tclStringObj.c
@@ -2270,11 +2270,11 @@ Tcl_AppendFormatToObj(
 		    }
 #endif
 		} else if (useBig && big.used) {
-		    int leftover = (big.used * DIGIT_BIT) % numBits;
-		    mp_digit mask = (~(mp_digit)0) << (DIGIT_BIT-leftover);
+		    int leftover = (big.used * MP_DIGIT_BIT) % numBits;
+		    mp_digit mask = (~(mp_digit)0) << (MP_DIGIT_BIT-leftover);
 
 		    numDigits = 1 +
-			    (((Tcl_WideInt) big.used * DIGIT_BIT) / numBits);
+			    (((Tcl_WideInt) big.used * MP_DIGIT_BIT) / numBits);
 		    while ((mask & big.dp[big.used-1]) == 0) {
 			numDigits--;
 			mask >>= numBits;
@@ -2310,9 +2310,9 @@ Tcl_AppendFormatToObj(
 
 		    if (useBig && big.used) {
 			if (index < big.used && (size_t) shift <
-				CHAR_BIT*sizeof(Tcl_WideUInt) - DIGIT_BIT) {
+				CHAR_BIT*sizeof(Tcl_WideUInt) - MP_DIGIT_BIT) {
 			    bits |= ((Tcl_WideUInt) big.dp[index++]) << shift;
-			    shift += DIGIT_BIT;
+			    shift += MP_DIGIT_BIT;
 			}
 			shift -= numBits;
 		    }
diff --git a/generic/tclStubInit.c b/generic/tclStubInit.c
index ec6e735..c9a195f 100644
--- a/generic/tclStubInit.c
+++ b/generic/tclStubInit.c
@@ -368,6 +368,8 @@ static int uniCharNcasecmp(const Tcl_UniChar *ucs, const Tcl_UniChar *uct, unsig
 #   define Tcl_Eval 0
 #   undef Tcl_GlobalEval
 #   define Tcl_GlobalEval 0
+#   undef Tcl_GetStringResult
+#   define Tcl_GetStringResult 0
 #   undef Tcl_SaveResult
 #   define Tcl_SaveResult 0
 #   undef Tcl_RestoreResult
diff --git a/generic/tclTest.c b/generic/tclTest.c
index f301ebc..8476ecb 100644
--- a/generic/tclTest.c
+++ b/generic/tclTest.c
@@ -971,8 +971,10 @@ AsyncHandlerProc(
 
     Tcl_MutexLock(&asyncTestMutex);
     for (asyncPtr = firstHandler; asyncPtr != NULL;
-         asyncPtr = asyncPtr->nextPtr) {
-        if (asyncPtr->id == id) break;
+            asyncPtr = asyncPtr->nextPtr) {
+        if (asyncPtr->id == id) {
+            break;
+        }
     }
     Tcl_MutexUnlock(&asyncTestMutex);
 
@@ -3325,10 +3327,7 @@ TestlinkarrayCmd(
     };
     int optionIndex, typeIndex, readonly, i, size, length;
     char *name, *arg;
-    long addr;                  /* Wrong on Windows, but that's MS's fault for
-                                 * not supporting <stdint.h> correctly. They
-                                 * can suffer the warnings; the rest of us
-                                 * shouldn't have to! */
+    Tcl_WideInt addr;
 
     if (objc < 2) {
 	Tcl_WrongNumArgs(interp, 1, objv, "option args");
@@ -3386,7 +3385,7 @@ TestlinkarrayCmd(
 	 */
 
 	if (i < objc) {
-	    if (Tcl_GetLongFromObj(interp, objv[i], &addr) == TCL_ERROR) {
+	    if (Tcl_GetWideIntFromObj(interp, objv[i], &addr) == TCL_ERROR) {
  		Tcl_SetObjResult(interp, Tcl_NewStringObj(
 			"wrong address value", -1));
 		return TCL_ERROR;
@@ -3394,7 +3393,7 @@ TestlinkarrayCmd(
 	} else {
 	    addr = 0;
 	}
-	return Tcl_LinkArray(interp, name, (void *) addr,
+	return Tcl_LinkArray(interp, name, INT2PTR(addr),
 		LinkTypes[typeIndex] | readonly, size);
     }
     return TCL_OK;
diff --git a/generic/tclTimer.c b/generic/tclTimer.c
index 15c87b5..ea80320 100644
--- a/generic/tclTimer.c
+++ b/generic/tclTimer.c
@@ -310,8 +310,8 @@ TclCreateAbsoluteTimerHandler(
     timerHandlerPtr->token = (Tcl_TimerToken) INT2PTR(tsdPtr->lastTimerId);
 
     /*
-     * Add the event to the queue in the correct position
-     * (ordered by event firing time).
+     * Add the event to the queue in the correct position (ordered by event
+     * firing time).
      */
 
     for (tPtr2 = tsdPtr->firstTimerHandlerPtr, prevPtr = NULL; tPtr2 != NULL;
@@ -1013,8 +1013,8 @@ AfterDelay(
 
     Tcl_GetTime(&now);
     endTime = now;
-    endTime.sec += (long)(ms/1000);
-    endTime.usec += ((int)(ms%1000))*1000;
+    endTime.sec += (long)(ms / 1000);
+    endTime.usec += ((int)(ms % 1000)) * 1000;
     if (endTime.usec >= 1000000) {
 	endTime.sec++;
 	endTime.usec -= 1000000;
@@ -1042,17 +1042,17 @@ AfterDelay(
 	    if (diff > TCL_TIME_MAXIMUM_SLICE) {
 		diff = TCL_TIME_MAXIMUM_SLICE;
 	    }
-	    if (diff == 0 && TCL_TIME_BEFORE(now, endTime)) {
-		diff = 1;
-	    }
+            if (diff == 0 && TCL_TIME_BEFORE(now, endTime)) {
+                diff = 1;
+            }
 	    if (diff > 0) {
-		Tcl_Sleep((int) diff);
-		if (diff < SLEEP_OFFLOAD_GETTIMEOFDAY) {
-		    break;
-		}
+		Tcl_Sleep((long) diff);
+                if (diff < SLEEP_OFFLOAD_GETTIMEOFDAY) {
+                    break;
+                }
 	    } else {
-		break;
-	    }
+                break;
+            }
 	} else {
 	    diff = TCL_TIME_DIFF_MS(iPtr->limit.time, now);
 	    if (diff > TCL_TIME_MAXIMUM_SLICE) {
diff --git a/generic/tclTomMath.h b/generic/tclTomMath.h
index 26eef26..cc9f286 100644
--- a/generic/tclTomMath.h
+++ b/generic/tclTomMath.h
@@ -1,14 +1,6 @@
-/* LibTomMath, multiple-precision integer library -- Tom St Denis
- *
- * LibTomMath is a library that provides multiple-precision
- * integer arithmetic as well as number theoretic functionality.
- *
- * The library was designed directly after the MPI library by
- * Michael Fromberger but has been written from scratch with
- * additional optimizations in place.
- *
- * SPDX-License-Identifier: Unlicense
- */
+/* LibTomMath, multiple-precision integer library -- Tom St Denis */
+/* SPDX-License-Identifier: Unlicense */
+
 #ifndef BN_H_
 #define BN_H_
 
@@ -115,29 +107,30 @@ typedef unsigned long long   mp_word;
 #define MP_MASK          ((((mp_digit)1)<<((mp_digit)DIGIT_BIT))-((mp_digit)1))
 #define MP_DIGIT_MAX     MP_MASK
 
-/* equalities */
+typedef int mp_sign;
+#define MP_ZPOS       0   /* positive integer */
+#define MP_NEG        1   /* negative */
+typedef int mp_ord;
 #define MP_LT        -1   /* less than */
 #define MP_EQ         0   /* equal to */
 #define MP_GT         1   /* greater than */
-
-#define MP_ZPOS       0   /* positive integer */
-#define MP_NEG        1   /* negative */
-
+typedef int mp_bool;
+#define MP_YES        1   /* yes response */
+#define MP_NO         0   /* no response */
+typedef int mp_err;
 #define MP_OKAY       0   /* ok result */
+#define MP_ERR        -1  /* unknown error */
 #define MP_MEM        -2  /* out of mem */
 #define MP_VAL        -3  /* invalid input */
 #define MP_RANGE      MP_VAL
 #define MP_ITER       -4  /* Max. iterations reached */
 
-#define MP_YES        1   /* yes response */
-#define MP_NO         0   /* no response */
-
 /* Primality generation flags */
 #define LTM_PRIME_BBS      0x0001 /* BBS style prime */
 #define LTM_PRIME_SAFE     0x0002 /* Safe prime (p-1)/2 == prime */
 #define LTM_PRIME_2MSB_ON  0x0008 /* force 2nd MSB to 1 */
 
-typedef int           mp_err;
+/* tunable cutoffs */
 
 /* define this to use lower memory usage routines (exptmods mostly) */
 /* #define MP_LOW_MEM */
@@ -146,6 +139,8 @@ typedef int           mp_err;
 #ifndef MP_PREC
 #   ifndef MP_LOW_MEM
 #      define MP_PREC 32        /* default digits of precision */
+#   elif defined(MP_8BIT)
+#      define MP_PREC 16        /* default digits of precision */
 #   else
 #      define MP_PREC 8         /* default digits of precision */
 #   endif
@@ -154,6 +149,45 @@ typedef int           mp_err;
 /* size of comba arrays, should be at least 2 * 2**(BITS_PER_WORD - BITS_PER_DIGIT*2) */
 #define MP_WARRAY               (1u << (((sizeof(mp_word) * CHAR_BIT) - (2 * DIGIT_BIT)) + 1))
 
+/*
+ * MP_WUR - warn unused result
+ * ---------------------------
+ *
+ * The result of functions annotated with MP_WUR must be
+ * checked and cannot be ignored.
+ *
+ * Most functions in libtommath return an error code.
+ * This error code must be checked in order to prevent crashes or invalid
+ * results.
+ *
+ * If you still want to avoid the error checks for quick and dirty programs
+ * without robustness guarantees, you can `#define MP_WUR` before including
+ * tommath.h, disabling the warnings.
+ */
+#ifndef MP_WUR
+#  if defined(__GNUC__) && __GNUC__ >= 4
+#     define MP_WUR __attribute__((warn_unused_result))
+#  else
+#     define MP_WUR
+#  endif
+#endif
+
+#if defined(__GNUC__) && (__GNUC__ * 100 + __GNUC_MINOR__ >= 301)
+#  define MP_DEPRECATED(x) __attribute__((deprecated("replaced by " #x)))
+#  define PRIVATE_MP_DEPRECATED_PRAGMA(s) _Pragma(#s)
+#  define MP_DEPRECATED_PRAGMA(s) PRIVATE_MP_DEPRECATED_PRAGMA(GCC warning s)
+#elif defined(_MSC_VER) && _MSC_VER >= 1500
+#  define MP_DEPRECATED(x) __declspec(deprecated("replaced by " #x))
+#  define MP_DEPRECATED_PRAGMA(s) __pragma(message(s))
+#else
+#  define MP_DEPRECATED
+#  define MP_DEPRECATED_PRAGMA(s)
+#endif
+
+#define USED(m)    ((m)->used)
+#define DIGIT(m,k) ((m)->dp[(k)])
+#define SIGN(m)    ((m)->sign)
+
 /* the infamous mp_int structure */
 #ifndef MP_INT_DECLARED
 #define MP_INT_DECLARED
@@ -168,10 +202,6 @@ struct mp_int {
 typedef int ltm_prime_callback(unsigned char *dst, int len, void *dat);
 
 
-#define USED(m)     ((m)->used)
-#define DIGIT(m, k) ((m)->dp[(k)])
-#define SIGN(m)     ((m)->sign)
-
 /* error code to char* string */
 const char *mp_error_to_string(int code);
 
diff --git a/generic/tclTomMathDecls.h b/generic/tclTomMathDecls.h
index 165e3b7..c5ed4d5 100644
--- a/generic/tclTomMathDecls.h
+++ b/generic/tclTomMathDecls.h
@@ -45,8 +45,11 @@
 /* Rename the global symbols in libtommath to avoid linkage conflicts */
 
 #define bn_reverse TclBN_reverse
+#define s_mp_reverse TclBN_reverse
 #define fast_s_mp_mul_digs TclBN_fast_s_mp_mul_digs
+#define s_mp_mul_digs_fast TclBN_fast_s_mp_mul_digs
 #define fast_s_mp_sqr TclBN_fast_s_mp_sqr
+#define s_mp_sqr_fast TclBN_fast_s_mp_sqr
 #define mp_add TclBN_mp_add
 #define mp_add_d TclBN_mp_add_d
 #define mp_and TclBN_mp_and
@@ -79,7 +82,9 @@
 #define mp_init_set_int TclBN_mp_init_set_int
 #define mp_init_size TclBN_mp_init_size
 #define mp_karatsuba_mul TclBN_mp_karatsuba_mul
+#define s_mp_karatsuba_mul TclBN_mp_karatsuba_mul
 #define mp_karatsuba_sqr TclBN_mp_karatsuba_sqr
+#define s_mp_karatsuba_sqr TclBN_mp_karatsuba_sqr
 #define mp_lshd TclBN_mp_lshd
 #define mp_mod TclBN_mp_mod
 #define mp_mod_2d TclBN_mp_mod_2d
@@ -108,7 +113,9 @@
 #define mp_to_unsigned_bin TclBN_mp_to_unsigned_bin
 #define mp_to_unsigned_bin_n TclBN_mp_to_unsigned_bin_n
 #define mp_toom_mul TclBN_mp_toom_mul
+#define s_mp_toom_mul TclBN_mp_toom_mul
 #define mp_toom_sqr TclBN_mp_toom_sqr
+#define s_mp_toom_sqr TclBN_mp_toom_sqr
 #define mp_toradix_n TclBN_mp_toradix_n
 #define mp_unsigned_bin_size TclBN_mp_unsigned_bin_size
 #define mp_xor TclBN_mp_xor
diff --git a/generic/tclZipfs.c b/generic/tclZipfs.c
index c3887f0..3d1941c 100644
--- a/generic/tclZipfs.c
+++ b/generic/tclZipfs.c
@@ -381,6 +381,7 @@ static int		ZipFSFileAttrsSetProc(Tcl_Interp *interp, int index,
 static int		ZipFSLoadFile(Tcl_Interp *interp, Tcl_Obj *path,
 			    Tcl_LoadHandle *loadHandle,
 			    Tcl_FSUnloadFileProc **unloadProcPtr, int flags);
+static void		ZipfsExitHandler(ClientData clientData);
 static void		ZipfsSetup(void);
 static int		ZipChannelClose(void *instanceData,
 			    Tcl_Interp *interp);
@@ -1286,6 +1287,7 @@ ZipFSCatalogFilesystem(
 
     *zf = *zf0;
     zf->mountPoint = Tcl_GetHashKey(&ZipFS.zipHash, hPtr);
+    Tcl_CreateExitHandler(ZipfsExitHandler, (ClientData)zf);
     zf->mountPointLen = strlen(zf->mountPoint);
     zf->nameLength = strlen(zipname);
     zf->name = ckalloc(zf->nameLength + 1);
@@ -1679,9 +1681,16 @@ TclZipfs_Mount(
 	return TCL_ERROR;
     }
     if (ZipFSOpenArchive(interp, zipname, 1, zf) != TCL_OK) {
+	ckfree(zf);
 	return TCL_ERROR;
     }
-    return ZipFSCatalogFilesystem(interp, zf, mountPoint, passwd, zipname);
+    if (ZipFSCatalogFilesystem(interp, zf, mountPoint, passwd, zipname)
+	    != TCL_OK) {
+	ckfree(zf);
+	return TCL_ERROR;
+    }
+    ckfree(zf);
+    return TCL_OK;
 }
 
 /*
@@ -1844,6 +1853,7 @@ TclZipfs_Unmount(
 	ckfree(z);
     }
     ZipFSCloseArchive(interp, zf);
+    Tcl_DeleteExitHandler(ZipfsExitHandler, (ClientData)zf);
     ckfree(zf);
     unmounted = 1;
   done:
@@ -4837,6 +4847,17 @@ ZipfsAppHookFindTclInit(
     return TCL_ERROR;
 }
 
+static void
+ZipfsExitHandler(
+    ClientData clientData)
+{
+    ZipFile *zf = (ZipFile *)clientData;
+
+    if (TCL_OK != TclZipfs_Unmount(NULL, zf->mountPoint)) {
+	Tcl_Panic("tried to unmount busy filesystem");
+    }
+}
+
 /*
  *-------------------------------------------------------------------------
  *