From e66ffae856862afc2056986389e32da835b255ea Mon Sep 17 00:00:00 2001
From: dessert1 <2664162+dessert1@users.noreply.github.com>
Date: Fri, 20 Mar 2020 19:12:33 +0100
Subject: [PATCH] Fix handling keyservers configured with protocol prefix
 (#7295)

`|^[a-z]://|` matches only single-character protocol shortnames, to correctly exclude e.g. `hkps://` the expression should be `|^[a-z]+://|` instead.
---
 program/lib/Roundcube/rcube_config.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/program/lib/Roundcube/rcube_config.php b/program/lib/Roundcube/rcube_config.php
index 9bce9dd3e..814ff88dc 100644
--- a/program/lib/Roundcube/rcube_config.php
+++ b/program/lib/Roundcube/rcube_config.php
@@ -594,7 +594,7 @@ class rcube_config
         $list = (array) $this->prop['keyservers'];
 
         foreach ($list as $idx => $host) {
-            if (!preg_match('|^[a-z]://|', $host)) {
+            if (!preg_match('|^[a-z]+://|', $host)) {
                 $host = "https://$host";
             }