1 https://github.com/zendframework/zend-mail/issues/64
3 diff --git a/src/Header/HeaderWrap.php b/src/Header/HeaderWrap.php
4 index df532ed..e0be2f5 100644
5 --- a/src/Header/HeaderWrap.php
6 +++ b/src/Header/HeaderWrap.php
7 @@ -116,7 +116,21 @@ abstract class HeaderWrap
9 public static function canBeEncoded($value)
11 - $encoded = iconv_mime_encode('x-test', $value, array('scheme' => 'Q'));
12 + // avoid any wrapping by specifying line length long enough
14 + // "x-test: =?ISO-8859-1?B?dGVzdA==?=" -> 33
17 + $line_length = strlen($value) * 4 + strlen($charset) + 16;
19 + $preferences = array(
21 + 'input-charset' => $charset,
22 + 'output-charset' => $charset,
23 + 'line-length' => $line_length,
26 + $encoded = iconv_mime_encode('x-test', $value, $preferences);
28 return (false !== $encoded);