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-rw-r--r--generic/tclCmdMZ.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/generic/tclCmdMZ.c b/generic/tclCmdMZ.c
index 531e2b1..0ad77aa 100644
--- a/generic/tclCmdMZ.c
+++ b/generic/tclCmdMZ.c
@@ -3679,8 +3679,12 @@ Tcl_SwitchObjCmd(
if (indexVarObj != NULL) {
Tcl_Obj *rangeObjAry[2];
- rangeObjAry[0] = Tcl_NewLongObj(info.matches[j].start);
- rangeObjAry[1] = Tcl_NewLongObj(info.matches[j].end);
+ if (info.matches[j].end > 0) {
+ rangeObjAry[0] = Tcl_NewLongObj(info.matches[j].start);
+ rangeObjAry[1] = Tcl_NewLongObj(info.matches[j].end-1);
+ } else {
+ rangeObjAry[0] = rangeObjAry[1] = Tcl_NewIntObj(-1);
+ }
/*
* Never fails; the object is always clean at this point.