Re: Tab completion doesn't work.

[Hongyi Zhao]

On Mon, May 15, 2023 at 8:05 AM Michael Heerdegen
<michael_heerdegen@web.de> wrote:
>
> Hongyi Zhao <hongyi.zhao@gmail.com> writes:
>
> > Any tips for this problem?
>
> Is the package correctly installed and loaded?

In my case, the configuration for helm and helm-bibtex is as follows:

```elisp
(use-package helm
  :bind (:map helm-command-map
          ("C-c h" . helm-execute-persistent-action)))

(use-package helm-bibtex
  :init
  (setq
   bibtex-completion-pdf-field "File"
   ;;https://github.com/tmalsburg/helm-bibtex#insert-latex-cite-commands
   bibtex-completion-cite-prompt-for-optional-arguments nil)

  :bind-keymap
  ("<menu>" . helm-command-prefix)
  :bind
  (
   :map helm-command-map
   ("b" . helm-bibtex)
   ("B" . helm-bibtex-with-local-bibliography)
   ("n" . helm-bibtex-with-notes)
   ("<menu>" . helm-resume)
   )

  :config
  (require 'helm-config)
  ;;https://github.com/tmalsburg/helm-bibtex#application-used-for-opening-pdfs
  ;;https://github.com/tmalsburg/helm-bibtex/issues/386
  (defun bibtex-completion-open-pdf-external (keys &optional fallback-action)
    (let ((bibtex-completion-pdf-open-function
       (lambda (fpath) (start-process "evince" "*helm-bibtex-evince*"
"/usr/bin/evince" fpath))))
      (bibtex-completion-open-pdf keys fallback-action)))

  (helm-bibtex-helmify-action bibtex-completion-open-pdf-external
helm-bibtex-open-pdf-external)

  (helm-add-action-to-source
   'helm-bibtex
   '(("P" helm-bibtex-open-pdf-external "Open PDF file in external
viewer (if present)")))

  
;;https://github.com/tmalsburg/helm-bibtex#browser-used-for-opening-urls-and-dois
  (setq bibtex-completion-browser-function
    (lambda (url _) (start-process "firefox" "*firefox*" "firefox" url)))

  )
```
I confirm the above configuration alone when testing with `emacs -Q`
doesn't trigger the problem here. So, it must be caused by other
settings.

See here [1] for the related discussion.

[1] https://github.com/tmalsburg/helm-bibtex/issues/431#issuecomment-1545772936

> Michael.

Regards,
Zhao