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-rw-r--r--generic/tclInterp.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/generic/tclInterp.c b/generic/tclInterp.c
index 1455c7d..344fbb0 100644
--- a/generic/tclInterp.c
+++ b/generic/tclInterp.c
@@ -2369,7 +2369,7 @@ SlaveCreate(
SlaveObjCmd, NRSlaveCmd, slaveInterp, SlaveObjCmdDeleteProc);
Tcl_InitHashTable(&slavePtr->aliasTable, TCL_STRING_KEYS);
Tcl_SetHashValue(hPtr, slavePtr);
- Tcl_SetVar(slaveInterp, "tcl_interactive", "0", TCL_GLOBAL_ONLY);
+ Tcl_SetVar2(slaveInterp, "tcl_interactive", NULL, "0", TCL_GLOBAL_ONLY);
/*
* Inherit the recursion limit.