Tab completion doesn't work.

[Hongyi Zhao]

Hi here,

In my Emacs, I want to inspect the value of the variable
`bibtex-completion-cite-commands` defined by helm-bibtex package. But
what puzzles me is `C-h v bib RET` doesn't expand to any completions,
as shown in the attached screenshot.

Any tips for this problem?

Regards,
Zhao
-- 
Assoc. Prof. Hongsheng 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

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