Bug#848947: bibtool: [Regression] Empty separators cause errors

[gi1242+debianbugs]

On Wed, Dec 21, 2016 at 04:34:43AM +0000, Jerome BENOIT wrote:

> Can you send a minimal material (sample(s) + procedure) that reproduce
> the issue ?

Dear Jerome,

Thanks for your quick response, and apologies for not being more
explicit.

I'm attaching a minimal bib file and rsc file to reproduce the problem.
Running

    bibtool -r bibtoolrsc < test.bib

produces

    *** BibTool ERROR: Invalid separator specification.

    @Book{            Adams.Fournier,
      author        = {Adams, Robert A. and Fournier, John J. F.}
    }

With earlier versions it used to produce

    @Book{            AdamsFournier,
      author        = {Adams, Robert A. and Fournier, John J. F.}
    }

(i.e. the key is supposed to be "AdamsFournier" and not
"Adams.Fournier")

Best,

GI

-- 
Birthdays are good for health. Studies show that people who have more
birthdays live longer.

fmt.name.name = {}
key.format = {%2n(author)}

@Book{		  AdamsFournier03,
  author	= {Adams, Robert A. and Fournier, John J. F.},
}