From e55bef366b87ecbcb66c93669f41876afc1d2446 Mon Sep 17 00:00:00 2001
From: Eric Wong <e@80x24.org>
Date: Thu, 18 Apr 2019 23:49:42 +0000
Subject: linkify: require parentheses pairs in URLs

Dangling parentheses with trailing punctuation usually means the
parentheses is not intended as part of the URL.
---
 lib/PublicInbox/Linkify.pm | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

(limited to 'lib/PublicInbox')

diff --git a/lib/PublicInbox/Linkify.pm b/lib/PublicInbox/Linkify.pm
index 71193bc2..d4778e7d 100644
--- a/lib/PublicInbox/Linkify.pm
+++ b/lib/PublicInbox/Linkify.pm
@@ -47,8 +47,16 @@ sub linkify_1 {
 			if ($url =~ s/$re//) {
 				$end = $1;
 			}
-		} elsif ($url =~ s/([\.,;])\z//) {
-			$end = $1;
+		} elsif ($url =~ s/(\))?([\.,;])\z//) {
+			$end = $2;
+			# require ')' to be paired with '('
+			if (defined $1) { # ')'
+				if (index($url, '(') < 0) {
+					$end = ")$end";
+				} else {
+					$url .= ')';
+				}
+			}
 		} elsif ($url !~ /\(/ && $url =~ s/\)\z//) {
 			$end = ')';
 		}
-- 
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