close $f
    set f [open $path(test1)]
    fconfigure $f -encoding utf-8 -profile tcl8 -buffersize 10
    set in [read $f]
    read $f
    scan [string index $in end] %c
} -cleanup {
    catch {close $f}
} -result 194
test io-12.10 {ReadChars: multibyte chars split} -body {
    set f [open $path(test1) w]
    fconfigure $f -translation binary
    puts -nonewline $f [string repeat a 9]\xC2
    close $f
    set f [open $path(test1)]

} -cleanup {
    close $f
    removeFile io-75.6
} -match glob -returnCodes 1 -result {error reading "file*":\
	invalid or incomplete multibyte or wide character}

test io-75.7 {
    invalid utf-8 encoding read is not ignored (-profile strict)
} -setup {
    set fn [makeFile {} io-75.7]
    set f [open $fn w+]
    fconfigure $f -encoding binary
    # \x81 is invalid in utf-8
    puts -nonewline $f A\x81
    flush $f

    unset d hd
} -result 41c0
# The current result returns the orphan byte as byte.
# This may be expected due to special utf-8 handling.

# As utf-8 has a special treatment in multi-byte decoding, also test another
# one.
test io-75.11 {shiftjis encoding error read results in error (strict profile)} -setup {
    set fn [makeFile {} io-75.11]
    set f [open $fn w+]
    fconfigure $f -encoding binary
    # In shiftjis, \x81 starts a two-byte sequence.
    # But 2nd byte \xFF is not allowed
    puts -nonewline $f A\x81\xFFA
    flush $f

    flush $f
    seek $f 0
    fconfigure $f -encoding utf-8 -blocking 0 -eofchar {} -translation lf \
	-profile strict
} -body {
    set d [read $f]
    binary scan $d H* hd
    lappend hd [catch {read $f} msg data] $msg [dict exists $data -data]
} -cleanup {
    close $f
    removeFile io-75.13
    unset d hd msg data f fn
} -match glob -result {41 1 {error reading "file*":\
    invalid or incomplete multibyte or wide character} 0}

test io-75.14 {
	[gets] succesfully returns lines prior to error

	invalid utf-8 encoding [gets] continues in non-strict mode after error
} -setup {
    set chan [file tempfile]
    fconfigure $chan -encoding binary
    # \xC0\n is an invalid utf-8 sequence
    puts -nonewline $chan a\nb\nc\xC0\nd\n
    flush $chan
    seek $chan 0
    fconfigure $chan -encoding utf-8 -buffering none -eofchar {} \
	-translation auto -profile strict
} -body {
    set res [gets $chan]
    lappend res [gets $chan]
    lappend res [catch {gets $chan} msg data] $msg [dict exists $data -data]
    chan configure $chan -profile tcl8
    lappend res [gets $chan]
    lappend res [gets $chan]
    return $res
} -cleanup {
    close $chan
    unset chan res msg data
} -match glob -result {a b 1 {error reading "*":\
    invalid or incomplete multibyte or wide character} 0 cÀ d}

test io-75.15 {
    invalid utf-8 encoding strict
    gets does not hang
    gets succeeds for the first two lines
} -setup {
    set res {}
    set chan [file tempfile]
    fconfigure $chan -encoding binary
    # \xC0\x40 is an invalid utf-8 sequence
    puts $chan hello\nAB\nCD\xC0\x40EF\nGHI
	seek $chan 0
} -body {
    #Now try to read it with [gets]
    fconfigure $chan -encoding utf-8 -profile strict
    lappend res [gets $chan]
    lappend res [gets $chan]
    lappend res [catch {gets $chan} msg data] $msg [dict exists $data -data]
    lappend res [catch {gets $chan} msg data] $msg [dict exists $data -data]
	chan configure $chan -translation binary
	set data [read $chan 4]
	foreach char [split $data {}] {
		scan $char %c ord
		lappend res [format %x $ord]
	}
    fconfigure $chan -encoding utf-8 -profile strict -translation auto
	lappend res [gets $chan]
	lappend res [gets $chan]
    return $res
} -cleanup {
    close $chan
    unset chan res msg data
} -match glob -result {hello AB 1 {error reading "*": invalid or incomplete multibyte or wide character}\
    0 1 {error reading "*": invalid or incomplete multibyte or wide character} 0 43 44 c0 40 EF GHI}

# ### ### ### ######### ######### #########



test io-76.0 {channel modes} -setup {
    set datafile [makeFile {some characters} dummy]