In a nutshell, tclsqlite.c should use Tcl_UtfToExternal on incoming values to convert the value from the Tcl internal utf-8 form to standard utf-8.
In a nutshell, tclsqlite.c should use Tcl_UtfToExternal on incoming values to convert the value from the Tcl internal utf-8 form to standard utf-8.