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-rw-r--r--generic/tclStringObj.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/generic/tclStringObj.c b/generic/tclStringObj.c
index 1828d20..332990d 100644
--- a/generic/tclStringObj.c
+++ b/generic/tclStringObj.c
@@ -409,6 +409,15 @@ Tcl_GetCharLength(
int numChars;
/*
+ * Quick, no-shimmer return for short string reps.
+ */
+
+ if ((objPtr->bytes) && (objPtr->length < 2)) {
+ /* 0 bytes -> 0 chars; 1 byte -> 1 char */
+ return objPtr->length;
+ }
+
+ /*
* Optimize the case where we're really dealing with a bytearray object
* without string representation; we don't need to convert to a string to
* perform the get-length operation.