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-rw-r--r--Bugzilla/Util.pm4
1 files changed, 4 insertions, 0 deletions
diff --git a/Bugzilla/Util.pm b/Bugzilla/Util.pm
index a030a92dd..75427af14 100644
--- a/Bugzilla/Util.pm
+++ b/Bugzilla/Util.pm
@@ -98,6 +98,10 @@ sub html_quote {
state $use_utf8 = Bugzilla->params->{'utf8'};
if ($use_utf8) {
+ # Remove control characters if the encoding is utf8.
+ # Other multibyte encodings may be using this range; so ignore if not utf8.
+ $var =~ s/(?![\t\r\n])[[:cntrl:]]//g;
+
# Remove the following characters because they're
# influencing BiDi:
# --------------------------------------------------------