Unintend/Intend selected codeblocks

Hello,

i found no way to intend/unintend a selcted codeblock. unintend is not working with selected code. Eg. when unintend shortcut pressed, Qt removes the selected codeblock.

I mean I saw such poor behavior in like no other advanced coding-editor or am I missing something? I'm really dissapointed by that. Cause Qt also inserts tabulators in front of text copied from somewhere else, like from nowhere. I need to unintend text then cause Qt is doing that. And I cannot find an comfortable option for that.

I Am searching for something like that (remove blockquote, Blockquote(intent)) to provide a visual statement:

http://media.wiley.com/Lux/16/336816.image1.jpg

thanks