Bind two commands to one key to toggle between them for the same local keymap.

[Hongyi Zhao]

I installed company with use-package, and want to bind the "<tab>" key
to the following commands when the local keymaps are
company-search-map or company-active-map to toggle between them:

("<tab>" . company-search-candidates)

and

("<tab>" . company-search-abort)

If the company-search-candidates command is in active, then run
company-search-abort when hitting <tab>, and vice versa.

How can this be achieved?

Regards
-- 
Assoc. Prof. Hongyi Zhao <hongyi.zhao@gmail.com>
Theory and Simulation of Materials
Hebei Vocational University of Technology and Engineering
No. 473, Quannan West Street, Xindu District, Xingtai, Hebei province