variable x ""
    set result ""
    vwait [namespace which -variable x]

    # cut of the remainder of the error stack, especially the filename
    set result [lreplace $result 3 3 [lindex [split [lindex $result 3] \n] 0]]
    list $x $result
} {1 {gets {} catch {error writing "stdout": invalid argument}}}
} {1 {gets {} catch {error writing "stdout": illegal byte sequence}}}

test io-61.1 {Reset eof state after changing the eof char} -setup {
    set datafile [makeFile {} eofchar]
    set f [open $datafile w]
    fconfigure $f -translation binary
    puts -nonewline $f [string repeat "Ho hum\n" 11]
    puts $f =