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-rw-r--r--program/include/rcube_cache.php9
1 files changed, 8 insertions, 1 deletions
diff --git a/program/include/rcube_cache.php b/program/include/rcube_cache.php
index 2fe5903b4..abadeedbc 100644
--- a/program/include/rcube_cache.php
+++ b/program/include/rcube_cache.php
@@ -152,7 +152,14 @@ class rcube_cache
$this->cache_changes = array();
}
else if ($pattern_mode) {
- $key = $this->prefix.$key;
+ // add cache prefix into PCRE expression
+ if (preg_match('/^(.)([^a-z0-9]*).*/i', $key, $matches)) {
+ $key = $matches[1] . $matches[2] . preg_quote($this->prefix, $matches[1])
+ . substr($key, strlen($matches[1].$matches[2]));
+ }
+ else {
+ $key = $this->prefix.$key;
+ }
foreach (array_keys($this->cache) as $k) {
if (preg_match($key, $k)) {