Fixes presence of empty tags for private tags and in search results

  * Private tags: make sure empty tags are properly filtered
  * Search results:
    * Use preg_split instead of function combination
    * Add normalize_spaces to remove extra whitespaces displaying empty tags search

1 files changed, 13 insertions, 0 deletions

diff --git a/application/Utils.php b/application/Utils.php
index 62902341..35d65224 100644
--- a/application/Utils.php
+++ b/application/Utils.php
@@ -257,3 +257,16 @@ function generate_api_secret($username, $salt)
 
     return str_shuffle(substr(hash_hmac('sha512', uniqid($salt), $username), 10, 12));
 }
+
+/**
+ * Trim string, replace sequences of whitespaces by a single space.
+ * PHP equivalent to `normalize-space` XSLT function.
+ *
+ * @param string $string Input string.
+ *
+ * @return mixed Normalized string.
+ */
+function normalize_spaces($string)
+{
+    return preg_replace('/\s{2,}/', ' ', trim($string));
+}