diff options
Diffstat (limited to 'generic/tclCmdMZ.c')
| -rw-r--r-- | generic/tclCmdMZ.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/generic/tclCmdMZ.c b/generic/tclCmdMZ.c index 885df49..8a08f53 100644 --- a/generic/tclCmdMZ.c +++ b/generic/tclCmdMZ.c @@ -3760,8 +3760,12 @@ TclNRSwitchObjCmd( if (matchVarObj != NULL) { Tcl_Obj *substringObj; - substringObj = Tcl_GetRange(stringObj, - info.matches[j].start, info.matches[j].end-1); + if (info.matches[j].end + 1 > 1) { + substringObj = Tcl_GetRange(stringObj, + info.matches[j].start, info.matches[j].end-1); + } else { + TclNewObj(substringObj); + } /* * Never fails; the object is always clean at this point. |