From b9c038ca63c2413789e123ed4e04bba889b9f830 Mon Sep 17 00:00:00 2001
From: Richard Hillmann <Project0@users.noreply.github.com>
Date: Sun, 7 Jan 2018 08:47:59 +0100
Subject: [PATCH] Fix preg_match in guess_type function (#6123)

---
 program/lib/Roundcube/rcube_config.php | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/program/lib/Roundcube/rcube_config.php b/program/lib/Roundcube/rcube_config.php
index a5f6a4ee5..431b512a3 100644
--- a/program/lib/Roundcube/rcube_config.php
+++ b/program/lib/Roundcube/rcube_config.php
@@ -109,13 +109,13 @@ class rcube_config
 
         // array requires hint to be passed.
 
-        if (preg_match('/^[-+]?(\d+(\.\d*)?|\.\d+)([eE][-+]?\d+)?$/', $value) !== false) {
+        if (preg_match('/^[-+]?(\d+(\.\d*)?|\.\d+)([eE][-+]?\d+)?$/', $value)) {
             $type = 'double';
         }
-        else if (preg_match('/^\d+$/', $value) !== false) {
+        else if (preg_match('/^\d+$/', $value)) {
             $type = 'integer';
         }
-        else if (preg_match('/(t(rue)?)|(f(alse)?)/i', $value) !== false) {
+        else if (preg_match('/^(t(rue)?)|(f(alse)?)$/i', $value)) {
             $type = 'boolean';
         }