Using BibTeX keys containing parentheses with Biber

Question

I am trying to move to using biblatex with Biber rather than BibTeX. unfortunately, nearly all of my BibTeX entries have keys that include colons and parentheses. like,

@BOOK{Chambers+Hastie:(92),
  editor               = {Chambers, John M. and Hastie, Trevor J.},
  year                 = 1992,
  title                = {Statistical Models in S},
  publisher            = {Wadsworth and Brooks/Cole Advanced Books and Software},
  address              = {Pacific Grove, CA},
  annote               = {tree,glm,splus},
}

this is something Biber apparently doesn't care for. Is there a workaround that doesn't involve changing all my .bib files?

Answer 1

I'm afraid the reason for this is that the library used by biber (btparse) intentionally doesn't allow this. It aims to disallow some of the more questionable bibtex constructs on purpose (see http://search.cpan.org/~ambs/Text-BibTeX-0.66/btparse/doc/bt_language.pod). Keys can't contain any of:

" # % ' ( ) , = { }

with btparse. The reason it doesn't allow parentheses is because it (and so biber) allows them to be used instead of braces, e. g.:

@BOOK(key,
...
)

As a result, it's non-trivial to modify the old PCCTS parser to fix this.

Of possible help, however, is that biber supports key aliases:

@BOOK{key,
  IDS = {key(withparens)},
  ...
}

This means you can still do \cite{key(withparens)}