[PATCH 3/5] wwwhighlight: deal with no-op highlight

[Eric Wong <e@80x24.org>]

Not all inputs are highlight-able, so reuse the original
input and just linkify it if it can't be highlighted.
---
 lib/PublicInbox/WwwHighlight.pm | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/lib/PublicInbox/WwwHighlight.pm b/lib/PublicInbox/WwwHighlight.pm
index d8101b7..bc349f8 100644
--- a/lib/PublicInbox/WwwHighlight.pm
+++ b/lib/PublicInbox/WwwHighlight.pm
@@ -25,6 +25,7 @@ use bytes (); # only for bytes::length
 use HTTP::Status qw(status_message);
 use parent qw(PublicInbox::HlMod);
 use PublicInbox::Linkify qw();
+use PublicInbox::Hval qw(ascii_html);
 
 # TODO: support highlight(1) for distros which don't package the
 # SWIG extension.  Also, there may be admins who don't want to
@@ -67,7 +68,11 @@ sub call {
 	my $bref = read_in_full($env) or return r(500);
 	my $l = PublicInbox::Linkify->new;
 	$l->linkify_1($$bref);
-	$bref = $self->do_hl($bref, $env->{PATH_INFO});
+	if (my $res = $self->do_hl($bref, $env->{PATH_INFO})) {
+		$bref = $res;
+	} else {
+		$$bref = ascii_html($$bref);
+	}
 	$l->linkify_2($$bref);
 
 	my $h = [ 'Content-Type', 'text/html; charset=UTF-8' ];
-- 
EW