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From: Michael Heerdegen <michael_heerdegen@web.de>
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Subject: Re: Tab completion doesn't work.
Date: Tue, 16 May 2023 04:11:33 +0200
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Hongyi Zhao <hongyi.zhao@gmail.com> writes:

> > > Debugger entered--Lisp error: (wrong-number-of-arguments (3 . 4) 2)
> > >   helm-add-action-to-source(helm-bibtex (("P"
> > > helm-bibtex-open-pdf-external "Open PDF file in external viewer (if
> > > present)")))
> >
> > So here is another error in the config you posted (the source argument
> > is missing in that call).
>
> I've filed the issue here:
> https://github.com/tmalsburg/helm-bibtex/issues/432#issuecomment-1548786182

It's not just an error in your personal config?

Michael.