2 files changed, 24 insertions, 17 deletions
diff --git a/Master/tlpkg/TeXLive/TLPDB.pm b/Master/tlpkg/TeXLive/TLPDB.pm
index 15766d2950f..134b4f4360b 100644
--- a/Master/tlpkg/TeXLive/TLPDB.pm
+++ b/Master/tlpkg/TeXLive/TLPDB.pm
@@ -1655,7 +1655,6 @@ sub not_virtual_install_package {
 sub _install_data {
   my ($self, $what, $reloc, $filelistref, $totlpdb, $whatsize, $whatcheck) = @_;
 
-printf STDERR "_install_data for $what whatsize $whatsize whatcheck $whatcheck\n";
   my $target = $totlpdb->root;
   my $tempdir = "$target/temp";
 
diff --git a/Master/tlpkg/TeXLive/TLUtils.pm b/Master/tlpkg/TeXLive/TLUtils.pm
index 0b251b2f060..74ff59a0a52 100644
--- a/Master/tlpkg/TeXLive/TLUtils.pm
+++ b/Master/tlpkg/TeXLive/TLUtils.pm
@@ -1948,25 +1948,18 @@ sub w32_remove_from_path {
 
 =pod
 
-=item C<unpack($what, $targetdir, @opts>
+=item C<check_file($what, $checksum, $checksize>
 
-If necessary, downloads C$what>, and then unpacks it into C<$targetdir>.
-C<@opts> is assigned to a hash and can contain the following 
-options: C<tmpdir> (use this directory for downloaded files), 
-C<checksum> (check downloaded file against this checksum), 
-C<size> (check downloaded file against this size),
-C<remove> (remove temporary files after operation).
-Returns the name of the unpacked package (determined from the name of C<$what>)
-in case of success, otherwise undefined.
+Remove C<$what> if either the given C<$checksum> or C<$checksize> does
+not agree. Does nothing if neither of the check arguments is given.
 
 =cut
 
 sub check_file {
   my ($xzfile, $checksum, $size) = @_;
-  printf STDERR "checking $xzfile for size $size sum $checksum\n";
   if ($checksum) {
     if (tlmd5($xzfile) ne $checksum) {
-      tlwarn("Found $what in $tempdir, but hashsums differ, removing it.\n");
+      tlwarn("Found $xzfile, but hashsums differ, removing it.\n");
       unlink($xzfile);
     }
   } elsif ($size) {
@@ -1978,11 +1971,29 @@ sub check_file {
       tlwarn("Found $xzfile, with equal size, continuing fingers crossed.\n");
     }
   } else {
-    tlwarn("Found $xzfile but no size or checksum information, removing it.\n");
-    unlink($xzfile);
+    # We cannot remove the file here, otherwise restoring of backups
+    # or unwind packages might die.
+    #
+    #tlwarn("Found $xzfile but no size or checksum information, removing it.\n");
+    # unlink($xzfile);
   }
 }
 
+=pod
+
+=item C<unpack($what, $targetdir, @opts>
+
+If necessary, downloads C$what>, and then unpacks it into C<$targetdir>.
+C<@opts> is assigned to a hash and can contain the following 
+options: C<tmpdir> (use this directory for downloaded files), 
+C<checksum> (check downloaded file against this checksum), 
+C<size> (check downloaded file against this size),
+C<remove> (remove temporary files after operation).
+Returns the name of the unpacked package (determined from the name of C<$what>)
+in case of success, otherwise undefined.
+
+=cut
+
 sub unpack {
   my ($what, $target, %opts) = @_;
   # remove by default
@@ -1990,7 +2001,6 @@ sub unpack {
   my $tempdir = (defined($opts{'tmpdir'}) ? $opts{'tmpdir'} : tl_tmpdir());
   my $checksum = (defined($opts{'checksum'}) ? $opts{'checksum'} : 0);
   my $size = (defined($opts{'size'}) ? $opts{'size'} : 0);
-  printf STDERR " unpack $what size $size checksum $checksum\n";
 
   if (!defined($what)) {
     tlwarn("TLUtils::unpack: nothing to unpack!\n");
@@ -2029,7 +2039,6 @@ sub unpack {
   $xzfile_quote = "\"$xzfile\"";
   $tarfile_quote = "\"$tarfile\"";
   $target_quote = "\"$target\"";
-printf STDERR "BBB xzfile $xzfile for size $size sum $checksum\n";
   if ($what =~ m,^(http|ftp)://,) {
     # we are installing from the NET
     # check for the presence of $what in $tempdir
@@ -2053,7 +2062,6 @@ printf STDERR "BBB xzfile $xzfile for size $size sum $checksum\n";
     # we are installing from local compressed files
     # copy it to temp
     TeXLive::TLUtils::copy($what, $tempdir);
-printf STDERR "AAA xzfile $xzfile for size $size sum $checksum\n";
 
     check_file($xzfile, $checksum, $size);
     if (! -r $xzfile) {