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-rw-r--r--lib/util.php24
1 files changed, 22 insertions, 2 deletions
diff --git a/lib/util.php b/lib/util.php
index 0052090f6..0a6725c7f 100644
--- a/lib/util.php
+++ b/lib/util.php
@@ -590,8 +590,28 @@ function common_shorten_links($text)
function common_xml_safe_str($str)
{
- // Neutralize control codes and surrogates
- return preg_replace('/[\p{Cc}\p{Cs}]/u', '*', $str);
+ // Replace common eol and extra whitespace input chars
+ $unWelcome = array(
+ "\t", // tab
+ "\n", // newline
+ "\r", // cr
+ "\0", // null byte eos
+ "\x0B" // vertical tab
+ );
+
+ $replacement = array(
+ ' ', // single space
+ ' ',
+ '', // nothing
+ '',
+ ' '
+ );
+
+ $str = str_replace($unWelcome, $replacement, $str);
+
+ // Neutralize any additional control codes and UTF-16 surrogates
+ // (Twitter uses '*')
+ return preg_replace('/[\p{Cc}\p{Cs}]/u', '*', $str);
}
function common_tag_link($tag)