bibtex-reformat is an interactive compiled Lisp function in `bibtex.el'.

(bibtex-reformat &optional READ-OPTIONS)

Reformat all BibTeX entries in buffer or region.
Without prefix argument, reformatting is based on `bibtex-entry-format'.
With prefix argument, read options for reformatting from minibuffer.
With C-u C-u prefix argument, reuse previous answers (if any) again.
If mark is active reformat entries in region, if not in whole buffer.