linkify: be stricter about matching RFC 3986

We're not to-the-letter about percent-encoding, but
we should allow all the characters.  This is mainly
so we can effectively use the link to some Wikipedia
pages with parentheses in them:

	https://en.wikipedia.org/wiki/Atom_(standard)
	https://en.wikipedia.org/wiki/Git_(software)

1 files changed, 34 insertions, 0 deletions

diff --git a/t/linkify.t b/t/linkify.t
index 586691ae..49cbbd64 100644
--- a/t/linkify.t
+++ b/t/linkify.t
@@ -23,4 +23,38 @@ use PublicInbox::Linkify;
         is($s, qq(<a\nhref="$u">$u</a>;), 'trailing semicolon not in URL');
 }
 
+{
+        my $l = PublicInbox::Linkify->new;
+        my $u = 'http://example.com/url-with-(parens)';
+        my $s = "hello $u world";
+        $s = $l->linkify_1($s);
+        $s = $l->linkify_2($s);
+        is($s, qq(hello <a\nhref="$u">$u</a> world), 'URL preserved');
+
+        $u .= "?query=a";
+        $s = "hello $u world";
+        $s = $l->linkify_1($s);
+        $s = $l->linkify_2($s);
+        is($s, qq(hello <a\nhref="$u">$u</a> world), 'query preserved');
+
+        $u .= "#fragment";
+        $s = "hello $u world";
+        $s = $l->linkify_1($s);
+        $s = $l->linkify_2($s);
+        is($s, qq(hello <a\nhref="$u">$u</a> world),
+          'query + fragment preserved');
+
+        $u = "http://example.com/";
+        $s = "hello $u world";
+        $s = $l->linkify_1($s);
+        $s = $l->linkify_2($s);
+        is($s, qq(hello <a\nhref="$u">$u</a> world), "root URL preserved");
+
+        $u = "http://example.com/#fragment";
+        $s = "hello $u world";
+        $s = $l->linkify_1($s);
+        $s = $l->linkify_2($s);
+        is($s, qq(hello <a\nhref="$u">$u</a> world), "root + fragment");
+}
+
 done_testing();