Merge 8.6. This mainly introduces the overlong check into Tcl_UtfPrev(). 10 testcase changed results, all of them due to the Tcl_UtfPrev() improvement. Tcl_UtfNext() is not affected: Previous implementation was based on Tcl_UtfToUniChar(), which already did this check.

1 files changed, 1 insertions, 1 deletions

diff --git a/generic/tclCmdMZ.c b/generic/tclCmdMZ.c
index 935d42f..d7394fb 100644
--- a/generic/tclCmdMZ.c
+++ b/generic/tclCmdMZ.c
@@ -2529,7 +2529,7 @@ StringStartCmd(
 		break;
 	    }
 
-	    next = Tcl_UtfPrev(p, string);
+	    next = TclUtfPrev(p, string);
 	    do {
 		next += delta;
 		delta = TclUtfToUCS4(next, &ch);