There's a bug in insertTags() function causing Opera 9.5x select wrong text when inserted text contains newline characters.

Example:

mwCustomEditButtons[mwCustomEditButtons.length] = {

"imageFile": "http://upload.wikimedia.org/wikipedia/en/f/fd/Button_blockquote.png",
"speedTip": "FooBar",
// <nowiki>
"tagOpen": "foo foo(",
"tagClose": ")bar\nbar\nbar\nbar",
"sampleText": "baz baz"};

This bug causes problem on Wiktionary, as buttons inserting multi-line text are in common use there (nearly on every edit creating a new page).

Suggested solution:

Remove

if (window.opera)

tagClose = tagClose.replace(/\n/g,'');

(terrible browser sniffing BTW) - this helps on Opera 9.5, don't know how it's with previous persions, but I remember the problem with insertTags() at least since the very beginning of Opera 9.x versions. Alternatively, your can change browser sniffing to:

if (is_opera && is_opera_seven)

or something like this. Or, the best way, remove the browser sniffing completely:

http://dev.opera.com/articles/view/a-browser-sniffing-warning-the-trouble/

Version: unspecified
Severity: normal