From f8527c143033f51fecd929789ef7ad6589c8c2b4 Mon Sep 17 00:00:00 2001
From: Mischa POSLAWSKY <perl@shiar.org>
Date: Fri, 14 May 2021 17:26:40 +0200
Subject: [PATCH] widget/reply: formatting syntax for <links>

Recognise common <url> notation (as in Markdown), extended for optional link
names after pipe (as in Slack) or whitespace (assuming escaped in urls).
---
 upload.inc.php | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/upload.inc.php b/upload.inc.php
index d7d572d..86af604 100644
--- a/upload.inc.php
+++ b/upload.inc.php
@@ -52,6 +52,9 @@ function messagehtml($input)
 		return $input;  # allow html input as is if privileged
 	}
 	$markup = [
+		'{&lt;((?:\w+:|/).+?)&gt;}'    => '<$1>',                # unescape link entities
+		'{<(?:https?://)?([^>\s|]+)>}' => '<$1 $1>',             # unnamed link
+		'{<([^>\s|]+)[\s|]([^>]+)>}'   => '<a href="$1">$2</a>', # hyperlink
 		"/\r\n?/" => "\n",        # unix newlines
 		"/  +\n/" => "<br />",    # trailing spaces for hard line break
 		"/\n/"    => "</p>\n<p>", # newlines start paragraphs
-- 
2.30.0