Writing position in brackets, when methods are being inserted

[Zediwan]

It would be great if the curser was placed in the brackets when a method is being inserted via auto-completion.

Currently:

[Zediwan]

          Two things I noticed:

• If using auto completion for function, f.e. in list(), the pointer should be inside the brackets and not at the end.
• Tables shouldn't be allowed for auto completion in "in list()" function, i.e. it's not allowed to have something like "diagnoses in list(B67_1)" where B67_1 denotes a table.

Originally posted by @jbessi in #1 (comment)