Improve the Advanced Query Editor

'Some feedback on the recent changes in the Advanced Editor, introducing intellisense on M. This is a great feature, but as Mike Hardy states, it needs more work and is very slow at the moment. Some other issues I have: - What REALLY drives me crazy is the warning when closing the editor with the Cancel button. Open the Advanced Editor, do nothing, Cancel - Are you sure you want to cancel? with... a Cancel button! That cancels the cancellation! - The Editor wants to do too much. I don't need the current line to be highlighted, and when I click a word I don't need all other occurrences of that word to be highlighted (this may be useful in some cases, but now many highlights occur that have nothing to do with the selected item. When entering a new line somewhere in the script, when typing in the first name I don't need the next line to display red wiggles; I know I'm not done typing. Please make this configurable. - Small suggestion: when I open the Editor to e.g. paste a copied M script, I cannot select all with CTRL+A. Instead, I have to click in the Editor and then CTRL+A works. It would make sense to be in edit mode right away. - This is probably a preview thing, but when entering a function (slow) the pop-up seems to be clickable by the hand cursor that is shown. This does nothing, however. What I do like a lot is that a double-click on a composed name like #"Promoted Headers" now selects the name. Before, a double-click on e.g. Promoted only selected the word Promoted and there was no easy way to select the name as a whole. Nice!