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-rw-r--r--generic/tclUtf.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/generic/tclUtf.c b/generic/tclUtf.c
index a122685..a038f8a 100644
--- a/generic/tclUtf.c
+++ b/generic/tclUtf.c
@@ -1554,7 +1554,7 @@ Tcl_UniCharIsSpace(
*/
if (((Tcl_UniChar) ch) < ((Tcl_UniChar) 0x80)) {
- return TclIsSpaceProc(ch);
+ return TclIsSpaceProc((char) ch);
} else if ((Tcl_UniChar) ch == 0x180e) {
return 1;
} else {