Coverage test for -translation auto handling of INPUT_SAW_CR flag.

Demonstrates refactor failure.

2 files changed, 15 insertions, 1 deletions

diff --git a/generic/tclIO.c b/generic/tclIO.c
index 09b8191..20101c2 100644
--- a/generic/tclIO.c
+++ b/generic/tclIO.c
@@ -8949,7 +8949,6 @@ CopyAndTranslateBuffer(
 	for (src = result; src < end; src++) {
 	    curByte = *src;
 	    if (curByte == '\r') {
-		Tcl_Panic("Untested");
 		SetFlag(statePtr, INPUT_SAW_CR);
 		*dst = '\n';
 		dst++;
diff --git a/tests/io.test b/tests/io.test
index 68051d7..e08c57a 100644
--- a/tests/io.test
+++ b/tests/io.test
@@ -6730,6 +6730,21 @@ test io-52.11 {TclCopyChannel & encodings} {fcopy} {
     file size $path(kyrillic.txt)
 } 3
 
+test io-52.12 {coverage of -translation auto} {
+    file delete $path(test1) $path(test2)
+    set out [open $path(test1) wb]
+    chan configure $out -translation lf
+    puts -nonewline $out abcdefg\rhijklmn\nopqrstu\r\nvwxyz
+    close $out
+    set in [open $path(test1)]
+    chan configure $in -buffersize 8
+    set out [open $path(test2) w]
+    fcopy $in $out
+    close $in
+    close $out
+    file size $path(test2)
+} 29
+
 test io-53.1 {CopyData} {fcopy} {
     file delete $path(test1)
     set f1 [open $thisScript]