core makes it right in resource/jquery/jquery.textSelection.js

More users updates her browsers to IE11, so there are more and more questions at least on the german village pump -> bumping priority, because this is a new browser version, not a old one.

$:andre\> grep -r "document.selection" .
./modules/jquery.wikiEditor.iframe.js:
if ( !e && context.$iframe[0].contentWindow.document.selection ) {
var range = context.$iframe[0].contentWindow.document.selection.createRange();
context.savedSelection = context.$iframe[0].contentWindow.document.selection.createRange();
} else if ( context.$iframe[0].contentWindow.document.selection ) { should come last; Opera!
var selection = context.$iframe[0].contentWindow.document.selection.createRange();
} else if ( context.$iframe[0].contentWindow.document.selection ) { should come last; Opera!
retval = context.$iframe[0].contentWindow.document.selection.createRange();
} else if ( context.$iframe[0].contentWindow.document.selection ) {
var range = context.$iframe[0].contentWindow.document.selection.createRange();
var range2 = context.$iframe[0].contentWindow.document.selection.createRange();
var range3 = context.$iframe[0].contentWindow.document.selection.createRange();
} else if ( context.$iframe[0].contentWindow.document.selection ) {
./modules/jquery.wikiEditor.js:

		context.savedSelection = document.selection.createRange();

The fatal is on:

/**

• Save text selection for IE */

saveSelection: function () {
if ( $.client.profile().name === 'msie' ) {

		context.$textarea.focus();
		context.savedSelection = document.selection.createRange();

}
},

That is easy to fix by adding "&& document.selection " to the if, but when grep for 'msie' you will found this:

/**

• Save scrollTop and cursor position for IE */

saveCursorAndScrollTop: function () {
if ( $.client.profile().name === 'msie' ) {

		var IHateIE = {
			'scrollTop' : context.$textarea.scrollTop(),
			'pos': context.$textarea.textSelection( 'getCaretPosition', { startAndEnd: true } )
		};
		context.$textarea.data( 'IHateIE', IHateIE );

}
},

And I cannot say, if that is still needed in IE11. I cannot test IE11 at the moment.

mr.heat wrote:

Who is responsible for the extension? More users are asking for this: https://de.wikipedia.org/wiki/Wikipedia:Fragen_zur_Wikipedia#Editieren_mit_IE11

(In reply to comment #5)

Who is responsible for the extension?

All maintainers that I am aware of are CC'ed.
For future reference, see also "Author(s)" on http://www.mediawiki.org/wiki/Extension:WikiEditor and https://www.mediawiki.org/wiki/Developers/Maintainers

Change 105517 had a related patch set uploaded by Umherirrender:
document.selection is undefined in IE11

https://gerrit.wikimedia.org/r/105517

Change 105517 merged by jenkins-bot:
document.selection is undefined in IE11

https://gerrit.wikimedia.org/r/105517

successfully merged

• Bug 66531 has been marked as a duplicate of this bug. ***