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-rw-r--r--program/include/rcmail_output_html.php2
1 files changed, 1 insertions, 1 deletions
diff --git a/program/include/rcmail_output_html.php b/program/include/rcmail_output_html.php
index 4df755985..0af7fab3b 100644
--- a/program/include/rcmail_output_html.php
+++ b/program/include/rcmail_output_html.php
@@ -1216,7 +1216,7 @@ class rcmail_output_html extends rcmail_output
// generate html code for button
if ($btn_content) {
- $attrib_str = html::attrib_string($attrib, $link_attrib);
+ $attrib_str = html::attrib_string($attrib, array_merge($link_attrib, array('data-*')));
$out = sprintf('<a%s>%s</a>', $attrib_str, $btn_content);
}