This RFC proposes introducing a second popup menu in insert mode to display
method argument hints, current parameter, etc. similar to a number of IDEs and
editors. The proposal is to allow scripts to control this (such as on insert of
(
and )
characters) and for it to be non-interractive and not to interfere
with insert-mode completion.
The purpose of the RFC is to guage the appetite from Bram and the community for such a feature, and to discuss the design/functional behaviours prior to