Tab-completion for function argument list

[tempestadept]

In IPython 2.0 notebook, when I enter a function name and open parentheses, a pair of parentheses is inserted. If I pres tab, I get a dropdown list of all identifiers, magics, etc. in scope, while in previous versions this opened a tooltip with function arguments and docstring. If I wait a couple of seconds after entering parentheses without pressing anything, I get that tooltip. Buttons for expanding it still have tooltips telling about pressing tab 2 or 4 times, but that doesn't work.
Displaying docstring in response to tab inside empty parentheses makes much more sense than the list of all identifiers.

[jenshnielsen]

The shortcut for tooltip has changed to shift-tab

[tempestadept]

Oh, thank you. Then the tooltips for tooltip expanding buttons (kinda tautological) should be updated

[jenshnielsen]

Yes I agree that is a bug.

[takluyver]

The tooltip tooltips should be fixed in #5512 - let me know if I missed any.

[grandfatha]

Shift-tab does not work for me on OSX in 2.1

[smcinerney]

Shift-tab only works when you place the edit cursor inside or after the object. Not when it's at the start of the object. This gotcha is not documented anywhere...!

[gustafbstrom]

I'd like to discuss the autocompletion issue from a different POI: when writing some function foo(... and then hit Tab, it now shows any function in the whole scope, while I'm just interested in the parameters of said function. I think it simply doesn't make any sense nor helps to see everything. I propose either fix that, or, if people likes this feature, that there should be an alternative. Possibly, that could be a setting or a different key combo, Tab-Shift or something.

What do you think?

[quatsch83]

I don't mind everything in the whole scope being shown, but it would be nice if the parameters were shown first instead of having everything in alphabetical order.