“Formatted Diff” view mangles non-ASCII characters

To reproduce, compare <https://bugs.webkit.org/attachment.cgi?id=120812&action=prettypatch> to <https://bugs.webkit.org/attachment.cgi?id=120812>. Notice that every apostrophe in the latter appears as â in the former.

The plain diff is encoded as and served as UTF-8, with the apostrophe encoded as E2 80 99. In the formatted diff, each on of those bytes appears to have been interpreted as Latin-1 and then encoded as UTF-8, resulting in the sequence C3 A2 C2 80 C2 99.

[Kent Tamura]

Bugzilla.pm:
> sub init_page {
>     (binmode STDOUT, ':utf8') if Bugzilla->params->{'utf8'};

attachment.cgi sub prettyPatch:
>    open2(\*OUT, \*IN, "/usr/bin/ruby", "-I", "PrettyPatch", "PrettyPatch/prettify.rb", "--html-exceptions");
>    $ENV{'PATH'} = $orig_path;
>    print IN $attachment->data;
>    close(IN);
>    while (<OUT>) {
>        print;
>    }
>    close(OUT);

I guess OUT works as binary, and "print" converts a binary line to UTF-8 because of binmode.
Probably utf8::decode($_); before print fixes this?

[Martin Robinson]

*** This bug has been marked as a duplicate of bug 45760 ***

This is not fixed.