1 files changed, 31 insertions, 0 deletions
diff --git a/tests/io.test b/tests/io.test
index 2dd231f..a9e98ed 100644
--- a/tests/io.test
+++ b/tests/io.test
@@ -7718,6 +7718,37 @@ test io-52.20 {TclCopyChannel & encodings} -setup {
     close $in
     close $out
 } -returnCodes 1 -match glob -result {error reading "file*": invalid or incomplete multibyte or wide character}
+
+test io-52.20.1 {TclCopyChannel & read encoding error & tell position} -setup {
+    set out [open $path(utf8-fcopy.txt) w]
+    fconfigure $out -encoding utf-8 -translation lf
+    puts $out "AÁ"
+    close $out
+} -constraints {fcopy} -body {
+    # binary to encoding => the input has to be
+    # in utf-8 to make sense to the encoder
+
+    set in  [open $path(utf8-fcopy.txt) r]
+    set out [open $path(kyrillic.txt) w]
+
+    # Using "-encoding ascii" means reading the "Á" gives an error
+    fconfigure $in  -encoding ascii -profile strict
+    fconfigure $out -encoding koi8-r -translation lf
+
+    set l {}
+	# should fail, so 1 is added
+    lappend l [catch {fcopy $in $out}]
+	# should be at position 1, after the first correct byte, so 1 is read.
+    lappend l [tell $in]
+    # not sure, if flush required, but anyway
+    flush $out
+	# should be at position 1, after the first correct byte, so 1 is written.
+    lappend l [tell $out]
+} -cleanup {
+    close $in
+    close $out
+} -returnCodes 0 -result {1 1 1}
+
 test io-52.21 {TclCopyChannel & encodings} -setup {
     set out [open $path(utf8-fcopy.txt) w]
     fconfigure $out -encoding utf-8 -translation lf